Fabrication of TiO2/C3N4 heterostructure for enhanced photocatalytic Z-scheme overall water splitting

Yan, Junqing; Wu, Huan; Chen, Hong; Zhang, Yunxia; Zhang, Fuxiang; Liu, Shengzhong

doi:10.1016/j.apcatb.2016.03.026

Cited by 367 publications

(119 citation statements)

References 63 publications

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“…These values can be comparable to some reported materials for overall water splitting (Supporting Information, Table S5). [14] Some other co-catalysts,such as CoP x ,C uP x ,w ere also tested, but lower photocatalytic activities were found. Fore xample,C TF-HUST-A1@4.5 wt %CoP x /3 wt %Pt shows lower rates of 3.4 mmol g À1 h À1 and 7.0 mmol g À1 h À1 for O 2 and H 2 evolution.…”

Section: Angewandte Chemiementioning

confidence: 99%

Strong‐Base‐Assisted Synthesis of a Crystalline Covalent Triazine Framework with High Hydrophilicity via Benzylamine Monomer for Photocatalytic Water Splitting

et al. 2020

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Methods to synthesize crystalline covalent triazine frameworks (CTFs) are limited and little attention has been paid to development of hydrophilic CTFs and photocatalytic overall water splitting. A route to synthesize crystalline and hydrophilic CTF‐HUST‐A1 with a benzylamine‐functionalized monomer is presented. The base reagent used plays an important role in the enhancement of crystallinity and hydrophilicity. CTF‐HUST‐A1 exhibits good crystallinity, excellent hydrophilicity, and excellent photocatalytic activity in sacrificial photocatalytic hydrogen evolution (hydrogen evolution rate up to 9200 μmol g−1 h−1). Photocatalytic overall water splitting is achieved by depositing dual co‐catalysts in CTF‐HUST‐A1, with H2 evolution and O2 evolution rates of 25.4 μmol g−1 h−1 and 12.9 μmol g−1 h−1 in pure water without using sacrificial agent.

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Section: Angewandte Chemiementioning

confidence: 99%

Strong‐Base‐Assisted Synthesis of a Crystalline Covalent Triazine Framework with High Hydrophilicity via Benzylamine Monomer for Photocatalytic Water Splitting

et al. 2020

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“…The g-C 3 N 4 is widely used in the degradation of organic pollutants and water splitting by visible light irradiation due to its strong visible light response, high thermal resistance and chemical stability [24][25][26][27]. g-C 3 N 4 /TiO 2 composites can not only transfer the photo-generated charge of g-C 3 N 4 to TiO 2 to increase its charge separation efficiency, but also reduce bandgap to increase its visible light absorption region [28][29][30]. Ma et al got highly photocatalytic water splitting performance with g-C 3 N 4 /TiO 2 composites by solvothermal method under visible light [10].…”

Section: Introductionmentioning

confidence: 99%

Noble Metal-Free TiO2-Coated Carbon Nitride Layers for Enhanced Visible Light-Driven Photocatalysis

2020

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Composites of g-C3N4/TiO2 were one-step prepared using electron impact with dielectric barrier discharge (DBD) plasma as the electron source. Due to the low operation temperature, TiO2 by the plasma method shows higher specific surface area and smaller particle size than that prepared via conventional calcination. Most interestingly, electron impact produces more oxygen vacancy on TiO2, which facilitates the recombination and formation of heterostructure of g-C3N4/TiO2. The composites have higher light absorption capacity and lower charge recombination efficiency. g-C3N4/TiO2 by plasma can produce hydrogen at a rate of 219.9 μmol·g−1·h−1 and completely degrade Rhodamine B (20mg·L−1) in two hours. Its hydrogen production rates were 3 and 1.5 times higher than that by calcination and pure g-C3N4, respectively. Electron impact, ozone and oxygen radical also play key roles in plasma preparation. Plasma has unique advantages in metal oxides defect engineering and the preparation of heterostructured composites with prospective applications as photocatalysts for pollutant degradation and water splitting.

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“…[12][13][14][15][16][17][18][19][20] Ta ken the typical TiO 2 as an example, g-C 3 N 4 /TiO 2 -based composites exhibited excellent photocatalytic performance. [21][22][23][24][25] Very recently,m edium-band gap conjugated polymers composedo fa lternating electron donor( D) and electron acceptor (A) have emerged as promising photocatalysts. [26][27][28][29][30][31][32][33][34][35][36] In contrastt og -C 3 N 4 and often used conjugated polymers formed by polymerization of same chemical units, such as polydopamine (PDA), [37][38] poly-3-hexylthiophene( P3HT), [39][40] polypyrrole (PPy), [41] and polyaniline (PANI), [42][43] the energyl evels of the D-A conjugated polymers can be facilely tuned by optimizing chemical structures of Do r Au nits for superior photocatalytic H 2 evolution rate (HER).…”

Section: Introductionmentioning

confidence: 99%

Enhanced Light‐Driven Hydrogen‐Production Activity Induced by Accelerated Interfacial Charge Transfer in Donor–Acceptor Conjugated Polymers/TiO₂ Hybrid

Chen

Wang

Dong

et al. 2019

Chemistry A European J

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Donor-acceptor (D-A) conjugated polymers have proved to be desired candidates to couple with inorganic semiconductors for enhanced photocatalytic activity.H erein, the matched energy levels between polymerB FB and TiO 2 make them form BFB-TiO 2 composites with moderate photocatalytic H 2 evolution rate (HER). To further enhancet he interfacial interaction, BFB was modified with ac arboxylic acid end group,w hich reactedw ith surface OH ofT iO 2 to form an ester bond.A saresult, the functionalized BFBA-TiO 2 compositese xhibited superior photocatalytic activity.E specially, HER of 4% BFBA-TiO 2 can reachu pt o2 28.2 mmol h À1 under visiblel ight irradiation (l > 420 nm), which is about 2.02 times higher than that of BFB-TiO 2 .T he enhanced photocatalytic activity originated from the formed ester bond betweenp olymer andT iO 2 ,a nd photogenerated electrons injectionf rom lowestu noccupied molecularo rbital (LUMO) of the exited polymert oc onduction band of TiO 2 were accelerated. Therefore, based on an intermolecular interaction mechanism, more suitable D-A conjugated polymers with anchoring groups could be designedt oc ouple with other semiconductors for enhancing photocatalytic activity.

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Fabrication of TiO2/C3N4 heterostructure for enhanced photocatalytic Z-scheme overall water splitting

Cited by 367 publications

References 63 publications

Strong‐Base‐Assisted Synthesis of a Crystalline Covalent Triazine Framework with High Hydrophilicity via Benzylamine Monomer for Photocatalytic Water Splitting

Strong‐Base‐Assisted Synthesis of a Crystalline Covalent Triazine Framework with High Hydrophilicity via Benzylamine Monomer for Photocatalytic Water Splitting

Noble Metal-Free TiO2-Coated Carbon Nitride Layers for Enhanced Visible Light-Driven Photocatalysis

Enhanced Light‐Driven Hydrogen‐Production Activity Induced by Accelerated Interfacial Charge Transfer in Donor–Acceptor Conjugated Polymers/TiO₂ Hybrid

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Fabrication of TiO2/C3N4 heterostructure for enhanced photocatalytic Z-scheme overall water splitting

Cited by 367 publications

References 63 publications

Strong‐Base‐Assisted Synthesis of a Crystalline Covalent Triazine Framework with High Hydrophilicity via Benzylamine Monomer for Photocatalytic Water Splitting

Strong‐Base‐Assisted Synthesis of a Crystalline Covalent Triazine Framework with High Hydrophilicity via Benzylamine Monomer for Photocatalytic Water Splitting

Noble Metal-Free TiO2-Coated Carbon Nitride Layers for Enhanced Visible Light-Driven Photocatalysis

Enhanced Light‐Driven Hydrogen‐Production Activity Induced by Accelerated Interfacial Charge Transfer in Donor–Acceptor Conjugated Polymers/TiO2 Hybrid

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Enhanced Light‐Driven Hydrogen‐Production Activity Induced by Accelerated Interfacial Charge Transfer in Donor–Acceptor Conjugated Polymers/TiO₂ Hybrid