The advanced multi-functional carbon dots in photoelectrochemistry based energy conversion

Xu X Y, Ray R, Gu Y L, Ploehn H J, Gearheart L, Raker K and Scrivens W A 2004 Electrophoretic analysis and purification of fluorescent single-walled carbon nanotube fragments J. Am. Chem. Soc. 126 12736–7

Brus L E 1984 Electron–electron and electron-hole interactions in small semiconductor crystallites: the size dependence of the lowest excited electronic state J. Chem. Phys. 80 4403–9

Burda C, Chen X B, Narayanan R and El-Sayed M A 2005 Chemistry and properties of nanocrystals of different shapes Chem. Rev. 105 1025–102

Wegner K D and Hildebrandt N 2015 Quantum dots: bright and versatile in vitro in vivo fluorescence imaging biosensors Chem. Soc. Rev. 44 4792–834

Sun Y P et al 2006 Quantum-sized carbon dots for bright and colorful photoluminescence J. Am. Chem. Soc. 128 7756–7

Li H T, He X D, Kang Z H, Huang H, Liu Y, Liu J L, Lian S Y, Tsang C, Yang X B and Lee S T 2010 Water-soluble fluorescent carbon quantum dots and photocatalyst design Angew. Chem., Int. Ed. 49 4430–4

Zhou J G, Booker C, Li R Y, Zhou X T, Sham T K, Sun X L and Ding Z F 2007 An electrochemical avenue to blue luminescent nanocrystals from multiwalled carbon nanotubes (MWCNTs) J. Am. Chem. Soc. 129 744–5

Liu Y H, Huang H, Cao W J, Mao B D, Liu Y and Kang Z H 2020 Advances in carbon dots: from the perspective of traditional quantum dots Mater. Chem. Front. 4 1586–613

Kang Z H and Lee S T 2019 Carbon dots: advances in nanocarbon applications Nanoscale 11 19214–24

Yao B W, Huang H, Liu Y and Kang Z H 2019 Carbon dots: a small conundrum Trends Chem. 1 235–46

Gao J, Zhu M M, Huang H, Liu Y and Kang Z H 2017 Advances, challenges and promises of carbon dots Inorg. Chem. Front. 4 1963–86

Hu C, Li M Y, Qiu J S and Sun Y P 2019 Design and fabrication of carbon dots for energy conversion and storage Chem. Soc. Rev. 48 2315–37

Shi R et al 2017 Hydroxyl-group-dominated graphite dots reshape laser desorption/ionization mass spectrometry for small biomolecular analysis and imaging ACS Nano 11 9500–13

Lu J, Yang J X, Wang J Z, Lim A, Wang S and Loh K P 2009 One-pot synthesis of fluorescent carbon nanoribbons, nanoparticles, and graphene by the exfoliation of graphite in ionic liquids ACS Nano 3 2367–75

Bottini M, Balasubramanian C, Dawson M I, Bergamaschi A, Bellucci S and Mustelin T 2006 Isolation and characterization of fluorescent nanoparticles from pristine and oxidized electric arc-produced single-walled carbon nanotubes J. Phys. Chem. B 110 831–6

Hu S L, Niu K Y, Sun J, Yang J, Zhao N Q and Du X W 2009 One-step synthesis of fluorescent carbon nanoparticles by laser irradiation J. Mater. Chem. 19 484–8

Li X Y, Wang H Q, Shimizu Y, Pyatenko A, Kawaguchi K and Koshizaki N 2011 Preparation of carbon quantum dots with tunable photoluminescence by rapid laser passivation in ordinary organic solvents Chem. Commun. 47 932–4

Zhu S J et al 2011 Strongly green-photoluminescent graphenequantum dots for bioimaging applications Chem. Commun. 47 6858–60

Pan D Y, Zhang J C, Li Z and Wu M H 2010 Hydrothermal route for cutting graphene sheets into blue-luminescent graphene quantum dots Adv. Mater. 22 734–8

Ming H, Ma Z, Liu Y, Pan K M, Yu H, Wang F and Kang Z H 2012 Large scale electrochemical synthesis of high quality carbon nanodots and their photocatalytic property Dalton Trans. 41 9526–31

Tian L, Ghosh D, Chen W, Pradhan S, Chang X J and Chen S W 2009 Nanosized carbon particles from natural gas soot Chem. Mater. 21 2803–9

Ray S C, Saha A, Jana N R and Sarkar R 2009 Fluorescent carbon nanoparticles: synthesis, characterization, and bioimaging application J. Phys. Chem. C 113 18546–51

Wang C X, Xu Z Z, Cheng H, Lin H H, Humphrey M G and Zhang C 2015 A hydrothermal route to water-stable luminescent carbon dots as nanosensors for pH and temperature Carbon 82 87–95

Shao J R, Zhu S J, Liu H W, Song Y B, Tao S Y and Yang B 2017 Full-color emission polymer carbon dots with quench-resistant solid-state fluorescence Adv. Sci. 4 1700395

Pan L L, Sun S, Zhang A D, Jiang K, Zhang L, Dong C Q, Huang Q, Wu A G and Lin H W 2015 Truly fluorescent excitation-dependent carbon dots and their applications in multicolor cellular imaging and multidimensional sensing Adv. Mater. 27 7782–7

Ðorđević L, Arcudi F, D’Urso A, Cacioppo M, Micali N, Bürgi T, Purrello R and Prato M 2018 Design principles of chiral carbon nanodots help convey chirality from molecular to nanoscale level Nat. Commun. 9 3442

Li F, Li Y Y, Yang X, Han X X, Jiao Y, Wei T T, Yang D Y, Xu H P and Nie G J 2018 Highly fluorescent chiral N-S-doped carbon dots from cysteine: affecting cellular energy metabolism Angew. Chem. 130 2401–6

Hu S L, Trinchi A, Atkin P and Cole I 2015 Tunable photoluminescence across the entire visible spectrum from carbon dots excited by white light Angew. Chem., Int. Ed. 54 2970–4

Niu X Q, Song T B and Xiong H M 2021 Large scale synthesis of red emissive carbon dots powder by solid state reaction for fingerprint identification Chin. Chem. Lett. 32 1953–6

Morris-Cohen A J, Donakowski M D, Knowles K E and Weiss E A 2010 The effect of a common purification procedure on the chemical composition of the surfaces of CdSe quantum dots synthesized with trioctylphosphine oxide J. Phys. Chem. C 114 897–906

Cao W J, Qin Y L, Huang H, Mao B D, Liu Y H and Kang Z H 2019 Extraction of high-quality quantum dot photocatalysts via combination of size selection and electrochemiluminescence ACS Sustain. Chem. Eng. 7 20043–50

Zhu H, Wang X L, Li Y L, Wang Z J, Yang F and Yang X R 2009 Microwave synthesis of fluorescent carbon nanoparticles with electrochemiluminescence properties Chem. Commun. 4 5118–20

Zhang J, Yuan Y, Liang G L and Yu S H 2015 Scale-up synthesis of fragrant nitrogen-doped carbon dots from bee pollens for bioimaging and catalysis Adv. Sci. 2 1500002

Arcudi F, Đorđević L and Prato M 2016 Synthesis, separation, and characterization of small and highly fluorescent nitrogen-doped carbon nanodots Angew. Chem., Int. Ed. 55 2107–12

Yuan F L et al 2018 Engineering triangular carbon quantum dots with unprecedented narrow bandwidth emission for multicolored LEDs Nat. Commun. 9 2249

Hinterberger V, Damm C, Haines P, Guldi D M and Peukert W 2019 Purification and structural elucidation of carbon dots by column chromatography Nanoscale 11 8464–74

Bartolomei B, Dosso J and Prato M 2021 New trends in nonconventional carbon dot synthesis Trends Chem. 3 943–53

Zhou Y J, Sun Y, Zhu C, Liu Y, Dai X, Zhong J, Chen Q Y, Tian H, Zhou R H and Kang Z H 2018 C–O⁻–K⁺ (Na⁺ groups in non-doped carbon as active sites for the oxygen reduction reaction J. Mater. Chem. A 6 8955–61

Vejpravová J 2021 Mixed sp²–sp³ nanocarbon materials: a status quo review Nanomaterials 11 2469

Saheeda P, Sabira K, Joseph J and Jayaleksmi S 2019 On the intriguing emission characteristics of size tunable carbon dots derived from functionalized multi-walled carbon nanotubes Mater. Chem. Phys. 225 8–15

Ding C Q, Zhu A W and Tian Y 2014 Functional surface engineering of C-dots for fluorescent biosensing and in vivo bioimaging Acc. Chem. Res. 47 20–30

Zhu S J et al 2012 Surface chemistry routes to modulate the photoluminescence of graphene quantum dots: from fluorescence mechanism to up-conversion bioimaging applications Adv. Funct. Mater. 22 4732–40

Niu X Q, Zheng W J, Song T B, Huang Z H, Yang C L, Zhang L M, Li W and Xiong H M 2022 Pyrolysis of single carbon sources in SBA-15: a recyclable solid phase synthesis to obtain uniform carbon dots with tunable luminescence Chin. Chem. Lett. 43 101428

Wei J S, Song T B, Zhang P, Zhu Z Y, Dong X Y, Niu X Q and Xiong H M 2020 Integrating carbon dots with porous hydrogels to produce full carbon electrodes for electric double-layer capacitors ACS Appl. Energy Mater. 3 6907–14

Ai L, Yang Y S, Wang B Y, Chang J B, Tang Z Y, Yang B and Lu S Y 2021 Insights into photoluminescence mechanisms of carbon dots: advances and perspectives Sci. Bull. 66 839–56

Xiong Y, Schneider J, Ushakova E V and Rogach A L 2018 Influence of molecular fluorophores on the research field of chemically synthesized carbon dots Nano Today 23 124–39

Wang B Y, Cai H J, Waterhouse G I N, Qu X L, Yang B and Lu S Y 2022 Carbon dots in bioimaging, biosensing and therapeutics: a comprehensive review Small Sci. 2 2200012

Wang B Y and Lu S Y 2022 The light of carbon dots: from mechanism to applications Matter 5 110–49

Jiang K, Gao X L, Feng X Y, Wang Y H, Li Z J and Lin H W 2020 Carbon dots with dual-emissive, robust, and aggregation-induced room-temperature phosphorescence characteristics Angew. Chem. 132 1279–85

Yang H Y, Liu Y L, Guo Z Y, Lei B F, Zhuang J L, Zhang X J, Liu Z M and Hu C F 2019 Hydrophobic carbon dots with blue dispersed emission and red aggregation-induced emission Nat. Commun. 10 1789

Das S K, Liu Y Y, Yeom S, Kim D Y and Richards C I 2014 Single-particle fluorescence intensity fluctuations of carbon nanodots Nano Lett. 14 620–5

Vallan L, Canton-Vitoria R, Gobeze H B, Jang Y, Arenal R, Benito A M, Maser W K, D’souza F and Tagmatarchis N 2018 Interfacing transition metal dichalcogenides with carbon nanodots for managing photoinduced energy and charge-transfer processes J. Am. Chem. Soc. 140 13488–96

Rasal A S, Yadav S, Yadav A, Kashale A A, Manjunatha S T, Altaee A and Chang J Y 2021 Carbon quantum dots for energy applications: a review ACS Appl. Nano Mater. 4 6515–41

Li S, Li L, Tu H Y, Zhang H, Silvester D S, Banks C E, Zou G Q, Hou H S and Ji X B 2021 The development of carbon dots: from the perspective of materials chemistry Mater. Today 51 188–207

Wei K Q, Liao F, Huang H, Shao M W, Lin H P, Liu Y and Kang Z H 2021 Simple semiempirical method for the location determination of HOMO and LUMO of carbon dots J. Phys. Chem. C 125 7451–7

Li F H, Liu Y H, Mao B D, Li L H, Huang H, Zhang D Q, Dong W X, Kang Z H and Shi W D 2021 Carbon-dots-mediated highly efficient hole transfer in Ⅰ-Ⅲ-Ⅵ quantum dots for photocatalytic hydrogen production Appl. Catal. B 292 120154

Yao Y, Zhang H Y, Hu K S, Nie G, Yang Y Y, Wang Y X, Duan X G and Wang S B 2022 Carbon dots based photocatalysis for environmental applications J. Environ. Chem. Eng. 10 107336

Jana B, Reva Y, Scharl T, Strauss V, Cadranel A and Guldi D M 2021 Carbon nanodots for all-in-one photocatalytic hydrogen generation J. Am. Chem. Soc. 143 20122–32

Liu C A et al 2018 Cascaded photo-potential in a carbon dot-hematite system driving overall water splitting under visible light Nanoscale 10 2454–60

Liu N Y, Qin Y L, Han M M, Li H, Sun Y, Zhao S Q, Huang H, Liu Y and Kang Z H 2018 Investigation of regeneration kinetics of a carbon-dot-sensitized metal oxide semiconductor with scanning electrochemical microscopy ACS Appl. Energy Mater. 1 1483–8

Niu W J, Zhu R H, Zeng H B, Cosnier S, Zhang X J and Shan D 2016 One-pot synthesis of nitrogen-rich carbon dots decorated graphene oxide as metal-free electrocatalyst for oxygen reduction reaction Carbon 109 402–10

Liu Y H, Ge R Y, Chen Y Y, Huang M Q, Zhu R J, Li W X, Liu Y, Feng L Y and Che R C 2021 Urchin-like cobalt hydroxide coupled with N-doped carbon dots hybrid for enhanced electrocatalytic water oxidation Chem. Eng. J. 420 127598

Wang Y O, Godin R, Durrant J R and Tang J W 2021 Efficient hole trapping in carbon dot/oxygen-modified carbon nitride heterojunction photocatalysts for enhanced methanol production from CO₂ under neutral conditions Angew. Chem., Int. Ed. 60 20811–6

Bao T, Song L M and Zhang S J 2018 Synthesis of carbon quantum dot-doped NiCoP and enhanced electrocatalytic hydrogen evolution ability and mechanism Chem. Eng. J. 351 189–94

Zhou Y J, Qi H H, Wu J, Huang H, Liu Y and Kang Z H 2022 Amino modified carbon dots with electron sink effect increase interface charge transfer rate of Cu-based electrocatalyst to enhance the CO₂ conversion selectivity to C₂H₄ Adv. Funct. Mater. 32 2113335

Zhai Y P, Zhang B W, Shi R, Zhang S Y, Liu Y, Wang B Y, Zhang K, Waterhouse G I N, Zhang T R and Lu S Y 2022 Carbon dots as new building blocks for electrochemical energy storage and electrocatalysis Adv. Energy Mater. 12 2103426

Takata T, Jiang J Z, Sakata Y, Nakabayashi M, Shibata N, Nandal V, Seki K, Hisatomi T and Domen K 2020 Photocatalytic water splitting with a quantum efficiency of almost unity Nature 581 411–4

Bie C B, Wang L X and Yu J G 2022 Challenges for photocatalytic overall water splitting Chemistry 8 1567–74

Vyas Y, Chundawat P, Dharmendra D, Punjabi P B and Ameta C 2021 Review on hydrogen production photocatalytically using carbon quantum dots: future fuel Int. J. Hydrog. Energy 46 37208–41

Liu J, Liu Y, Liu N Y, Han Y Z, Zhang X, Huang H, Lifshitz Y, Lee S T, Zhong J and Kang Z H 2015 Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathway Science 347 970–4

Meng X B, Sheng J L, Tang H L, Sun X J, Dong H and Zhang F M 2019 Metal-organic framework as nanoreactors to co-incorporate carbon nanodots and CdS quantum dots into the pores for improved H₂ evolution without noble-metal cocatalyst Appl. Catal. B 244 340–6

Shi W L, Guo F, Zhu C, Wang H B, Li H, Huang H, Liu Y and Kang Z H 2017 Carbon dots anchored on octahedral CoO as a stable visible-light-responsive composite photocatalyst for overall water splitting J. Mater. Chem. A 5 19800–7

He Y Q, Lei Q, Li C G, Han Y, Shi Z and Feng S H 2021 Defect engineering of photocatalysts for solar-driven conversion of CO₂ into valuable fuels Mater. Today 50 358–84

Gong E, Ali S, Hiragond C B, Kim H S, Powar N S, Kim D, Kim H and In S I 2022 Solar fuels: research and development strategies to accelerate photocatalytic CO₂ conversion into hydrocarbon fuels Energy Environ. Sci. 15 880–937

Prabhu P, Jose V and Lee J M 2020 Heterostructured catalysts for electrocatalytic and photocatalytic carbon dioxide reduction Adv. Funct. Mater. 30 1910768

Li Q, Wang S C, Sun Z X, Tang Q J, Liu Y Q, Wang L Z, Wang H Q and Wu Z B 2019 Enhanced CH₄ selectivity in CO₂ photocatalytic reduction over carbon quantum dots decorated and oxygen doping g-C₃N₄ Nano Res. 12 2749–59

Wang Y O et al 2020 Unique hole-accepting carbon-dots promoting selective carbon dioxide reduction nearly 100% to methanol by pure water Nat. Commun. 11 2531

Liang Q, Yan X T, Li Z Y, Wu Z Y, Shi H, Huang H and Kang Z H 2022 Replacing Ru complex with carbon dots over MOF-derived Co₃O₄/In₂O₃ catalyst for efficient solar-driven CO₂ reduction J. Mater. Chem. A 10 4279–87

Lin L Y, Liu C and Hsieh T T 2020 Efficient visible and NIR light-driven photocatalytic CO₂ reduction over defect-engineered ZnO/carbon dot hybrid and mechanistic insights J. Catal. 391 298–311

Liu Z, Wang Z J, Qing S, Xue N N, Jia S P, Zhang L, Li L, Li N, Shi L Y and Chen J Z 2018 Improving methane selectivity of photo-induced CO₂ reduction on carbon dots through modification of nitrogen-containing groups and graphitization Appl. Catal. B 232 86–92

Song H Q, Wu M, Tang Z Y, Tse J S, Yang B and Lu S Y 2021 Single atom ruthenium-doped CoP/CDs nanosheets via splicing of carbon-dots for robust hydrogen production Angew. Chem., Int. Ed. 60 7234–44

Chen W W, Qin Z J, McElhenny B, Zhang F H, Chen S, Bao J M, Wang Z M, Song H Z and Ren Z F 2019 The effect of carbon quantum dots on the electrocatalytic hydrogen evolution reaction of manganese–nickel phosphide nanosheets J. Mater. Chem. A 7 21488–95

Liu Y, Yang Y P, Peng Z K, Liu Z Y, Chen Z M, Shang L, Lu S Y and Zhang T R 2019 Self-crosslinking carbon dots loaded ruthenium dots as an efficient and super-stable hydrogen production electrocatalyst at all pH values Nano Energy 65 104023

Yang Y M, Liu J, Guo S J, Liu Y and Kang Z H 2015 A nickel nanoparticle/carbon quantum dot hybrid as an efficient electrocatalyst for hydrogen evolution under alkaline conditions J. Mater. Chem. A 3 18598–604

Li W D et al 2018 Carbon-quantum-dots-loaded ruthenium nanoparticles as an efficient electrocatalyst for hydrogen production in alkaline media Adv. Mater. 30 1800676

Xie X H, Du L, Yan L T, Park S, Qiu Y, Sokolowski J, Wang W and Shao Y Y 2022 Oxygen evolution reaction in alkaline environment: material challenges and solutions Adv. Funct. Mater. 32 2110036

Guo T Q, Li L D and Wang Z C 2022 Recent development and future perspectives of amorphous transition metal-based electrocatalysts for oxygen evolution reaction Adv. Energy Mater. 12 2200827

Subbaraman R, Tripkovic D, Chang K C, Strmcnik D, Paulikas A P, Hirunsit P, Chan M, Greeley J, Stamenkovic V and Markovic N M 2012 Trends in activity for the water electrolyser reactions on 3d M(Ni,Co,Fe,Mn) hydr(oxy)oxide catalysts Nat. Mater. 11 550–7

Feng T L, Zeng Q S, Lu S Y, Yang M X, Tao S Y, Chen Y X, Zhao Y and Yang B 2019 Morphological and interfacial engineering of cobalt-based electrocatalysts by carbon dots for enhanced water splitting ACS Sustain. Chem. Eng. 7 7047–57

Bai Y, Zhang L C, Li Q L, Wu Y K, Wang Y P, Xu M W and Bao S J 2021 Self-supported CdP₂–CDs–CoP for high-performance OER catalysts ACS Sustain. Chem. Eng. 9 1297–303

Song D Q, Guo H Z, Huang K, Zhang H Y, Chen J, Wang L, Lian C and Wang Y 2022 Carboxylated carbon quantum dot-induced binary metal–organic framework nanosheet synthesis to boost the electrocatalytic performance Mater. Today 54 42–51

Li Z, Xu X L, Lu X H, He C C, Huang J J, Sun W and Tian L 2022 Synergistic coupling of FeNi₃ alloy with graphene carbon dots for advanced oxygen evolution reaction electrocatalysis J. Colloid Interface Sci. 615 273–81

Song H Q, Yu J K, Tang Z Y, Yang B and Lu S Y 2022 Halogen-doped carbon dots on amorphous cobalt phosphide as robust electrocatalysts for overall water splitting Adv. Energy Mater. 12 2102573

Mohideen M M, Liu Y and Ramakrishna S 2020 Recent progress of carbon dots and carbon nanotubes applied in oxygen reduction reaction of fuel cell for transportation Appl. Energy 257 114027

Zhou Y J, Sun Y, Wang H B, Zhu C, Gao J, Wu D, Huang H, Liu Y and Kang Z H 2018 A nitrogen and boron co-doped metal-free carbon electrocatalyst for an efficient oxygen reduction reaction Inorg. Chem. Front. 5 2985–91

Sun X C, Brückner C and Lei Y 2015 One-pot and ultrafast synthesis of nitrogen and phosphorus co-doped carbon dots possessing bright dual wavelength fluorescence emission Nanoscale 7 17278–82

Zhang P, Wei J S, Chen X B and Xiong H M 2019 Heteroatom-doped carbon dots based catalysts for oxygen reduction reactions J. Colloid Interface Sci. 537 716–24

Wang M R et al 2020 Superior oxygen reduction reaction on phosphorus-doped carbon dot/graphene aerogel for all-solid-state flexible Al–air batteries Adv. Energy Mater. 10 1902736

Pei Y F, Song H Q, Liu Y, Cheng Y J, Li W D, Chen Y M, Fan Y P, Liu B Z and Lu S Y 2021 Boron–nitrogen-doped carbon dots on multi-walled carbon nanotubes for efficient electrocatalysis of oxygen reduction reactions J. Colloid Interface Sci. 600 865–71

Bhattacharyya S, Konkena B, Jayaramulu K, Schuhmann W and Maji T K 2017 Synthesis of nano-porous carbon and nitrogen doped carbon dots from an anionic MOF: a trace cobalt metal residue in carbon dots promotes electrocatalytic ORR activity J. Mater. Chem. A 5 13573–80

Kakaei K 2017 High efficiency platinum nanoparticles based on carbon quantum dot and its application for oxygen reduction reaction Int. J. Hydrog. Energy 42 11605–13

Kakaei K, Javan H and Mohammadi H B 2016 Synthesis of carbon quantum dots nanoparticles by cyclic voltammetry and its application as methanol tolerant oxygen reduction reaction electrocatalyst J. Chin. Chem. Soc. 63 432–7

Cheng R Q, Jiang M, Li K Q, Guo M L, Zhang J, Ren J M, Meng P Y, Li R H and Fu C P 2021 Dimensional engineering of carbon dots derived sulfur and nitrogen co-doped carbon as efficient oxygen reduction reaction electrocatalysts for aluminum-air batteries Chem. Eng. J. 425 130603

Corral D et al 2021 Advanced manufacturing for electrosynthesis of fuels and chemicals from CO₂ Energy Environ. Sci. 14 3064–74

Yoon Suk Lee L and Wong K Y 2017 Electrocatalytic reduction of carbon dioxide Chemistry 3 717–8

Liu M et al 2019 Quantum-dot-derived catalysts for CO₂ reduction reaction Joule 3 1703–18

Song R B, Zhu W L, Fu J J, Chen Y, Liu L X, Zhang J R, Lin Y H and Zhu J J 2019 Electrode materials engineering in electrocatalytic CO₂ reduction: energy input and conversion efficiency Adv. Mater. 32 1903796

Fu J J, Wang Y, Liu J, Huang K K, Chen Y, Li Y F and Zhu J J 2018 Low overpotential for electrochemically reducing CO₂ to CO on nitrogen-doped graphene quantum dots-wrapped single-crystalline gold nanoparticles ACS Energy Lett. 3 946–51

Chen C J et al 2020 Highly efficient electroreduction of CO₂ to C2+ alcohols on heterogeneous dual active sites Angew. Chem., Int. Ed. 59 16459–64

Lv K L, Suo W Q, Shao M D, Zhu Y, Wang X P, Feng J J, Fang M W and Zhu Y 2019 Nitrogen doped MoS₂ and nitrogen doped carbon dots composite catalyst for electroreduction CO₂ to CO with high Faradaic efficiency Nano Energy 63 103834

Zhang T Y et al 2021 Regulation of functional groups on graphene quantum dots directs selective CO₂ to CH₄ conversion Nat. Commun. 12 5265

Chen Z P, Mou K W, Wang X H and Liu L C 2018 Nitrogen-doped graphene quantum dots enhance the activity of Bi₂O₃ nanosheets for electrochemical reduction of CO₂ in a wide negative potential region Angew. Chem. 130 12972–6

Liu Y, Zhao Y J, Sun Y, Cao J J, Wang H, Wang X, Huang H, Shao M W, Liu Y and Kang Z H 2020 A 4e⁻–2e⁻ cascaded pathway for highly efficient production of H₂ and H₂O₂ from water photo-splitting at normal pressure Appl. Catal. B 270 118875

Cao J J et al 2021 In-situ photovoltage transients assisted catalytic study on H₂O₂ photoproduction over organic molecules modified carbon nitride photocatalyst Appl. Catal. B 285 119817

Li Y, Zhao Y J, Nie H D, Wei K Q, Cao J J, Huang H, Shao M W, Liu Y and Kang Z H 2021 Interface photo-charge kinetics regulation by carbon dots for efficient hydrogen peroxide production J. Mater. Chem. A 9 515–22

Zhao Y J et al 2021 Carbon nitride assisted 2D conductive metal-organic frameworks composite photocatalyst for efficient visible light-driven H₂O₂ production Appl. Catal. B 289 120035

Li Y, Zhao Y, Wu J, Han Y D, Huang H, Liu Y and Kang Z H 2021 Photo-charge regulation of metal-free photocatalyst by carbon dots for efficient and stable hydrogen peroxide production J. Mater. Chem. A 9 25453–62

Xue F, Si Y T, Wang M, Liu M C and Guo L J 2019 Toward efficient photocatalytic pure water splitting for simultaneous H₂ and H₂O₂ production Nano Energy 62 823–31

Liu Y, Wang X, Zhao Y J, Wu Q Y, Nie H D, Si H L, Huang H, Liu Y, Shao M W and Kang Z H 2022 Highly efficient metal-free catalyst from cellulose for hydrogen peroxide photoproduction instructed by machine learning and transient photovoltage technology Nano Res. 15 4000–7

Nie H D, Liu Y, Li Y, Wei K Q, Wu Z Y, Shi H, Huang H, Liu Y, Shao M W and Kang Z H 2022 In-situ transient photovoltage study on interface electron transfer regulation of carbon dots/NiCo₂O₄ photocatalyst for the enhanced overall water splitting activity Nano Res. 15 1786–95

Wang X et al 2021 Carbon-dot-based white-light-emitting diodes with adjustable correlated color temperature guided by machine learning Angew. Chem., Int. Ed. 60 12585–90

Wang H B et al 2021 Pyrrolic nitrogen dominated the carbon dot mimic oxidase activity Carbon 179 692–700

Zhou J, Dong M, Sun Y, Shan G G, Sun C Y, You S Q, Wang X L, Kang Z H and Su Z M 2022 Dynamic interface with enhanced visible-light absorption and electron transfer for direct photoreduction of flue gas to syngas ACS Appl. Mater. Interfaces 14 6476–83

Zhao Y et al 2022 A comprehensive understanding on the roles of carbon dots in metallated graphyne based catalyst for photoinduced H₂O₂ production Nano Today 43 101428

Wu Z Y, Wang X T, Li Y, Zhao H, Wang J W, Huang H, Liu Y and Kang Z H 2022 Converting water impurity in organic solvent into hydrogen and hydrogen peroxide by organic semiconductor photocatalyst Appl. Catal. B 305 121047

Liu Y, Zhao Y J, Wu Q Y, Wang X, Nie H D, Zhou Y J, Huang H, Shao M W, Liu Y and Kang Z H 2021 Charge storage of carbon dot enhances photo-production of H₂ and H₂O₂ over Ni₂P/carbon dot catalyst under normal pressure Chem. Eng. J. 409 128184

Wu Q Y et al 2021 A metal-free photocatalyst for highly efficient hydrogen peroxide photoproduction in real seawater Nat. Commun. 12 483

Han Y D, Wu J, Li Y, Gu X Q, He T W, Zhao Y, Huang H, Liu Y and Kang Z H 2022 Carbon dots enhance the interface electron transfer and photoelectrochemical kinetics in TiO₂ photoanode Appl. Catal. B 304 120983

Zhang T Y, Wang X, Wu Z Y, Yang T Y, Wang J W, Zhao H, Huang H, Liu Y and Kang Z H 2022 Carbon dots promote the carrier recombination in poly (9-vinyl carbazole) to enhance its electroluminescence Appl. Surf. Sci. 585 152649

Wu J, Zhou Y J, Nie H D, Wei K Q, Huang H, Liao F, Liu Y, Shao M W and Kang Z H 2022 Carbon dots regulate the interface electron transfer and catalytic kinetics of Pt-based alloys catalyst for highly efficient hydrogen oxidation J. Energy Chem. 66 61–67