Constructing Interfacial B–P Bonding Bridge to Promote S-Scheme Charge Migration within Heteroatom-Doped Carbon Nitride Homojunction for Efficient H2O2 Photosynthesis DOI
Shahid Ali Khan, Muhammad Adnan Qaiser, Waqar Ahmad Qureshi

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

The emerging step (S)-scheme heterojunction systems became a powerful strategy in promoting photogenerated charge separation while maintaining their high redox potentials. However, the weak interfacial interaction limits migration rate S-scheme heterojunctions. Herein, we construct unique carbon nitride (CN) homojunction with boron (B)-doped CN and phosphorus (P)-doped (B-CN/P-CN) for hydrogen peroxide (H2O2) photosynthesis. B-CN/P-CN nanosheet composites revealed extensively tight contact, improved visible-light harvesting, reduced carrier lifetime. structural investigation results also indicate that chemical B–P bonding is formed between B-CN P-CN nanosheets, inducing an accelerated migration. Density functional theory calculations further clarify transfer mechanism. Consequently, 2e– oxygen reduction reaction was predominant pathway of H2O2 production, facilitated by homojunction. optimal yield reached 2199.5 μmol L–1 h–1 over (S3) photocatalyst under monochromatic LED irradiation, increasing 2–8 times as against most C3N4 photocatalysts. This study highlights crucial role heterojunction/homojunction materials, accompanied unveiling mechanism solar-energy conversions.

Language: Английский

Coupled adsorption and photocatalysis of g-C3N4 based composites: Material synthesis, mechanism, and environmental applications DOI

Yutang Yu,

Hongwei Huang

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 453, P. 139755 - 139755

Published: Oct. 17, 2022

Language: Английский

Citations

184
Zinc porphyrin/g-C3N4 S-scheme photocatalyst for efficient H2O2 production DOI
Yang Xia, Bicheng Zhu, X.‐Z. QIN

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 467, P. 143528 - 143528

Published: May 15, 2023

Language: Английский

Citations

93
Linker regulation of iron-based MOFs for highly effective Fenton-like degradation of refractory organic contaminants DOI
Junying Chen,

Chencheng Qin,

Yi Mou

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 459, P. 141588 - 141588

Published: Jan. 28, 2023

Language: Английский

Citations

92
Intramolecular D-A structure and n-π* transition co-promoted photodegradation activity of carbon nitride: Performance, mechanism and toxicity insight DOI

Jingmin Shi,

Meng Tai,

Jingyang Hou

et al.

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 456, P. 141029 - 141029

Published: Dec. 17, 2022

Language: Английский

Citations

87
Surface Energy Mediated Sulfur Vacancy of ZnIn2S4 Atomic Layers for Photocatalytic H2O2 Production DOI

Kailian Zhang,

Meng Dan,

Jingfei Yang

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(35)

Published: May 14, 2023

Abstract Constructing rich defect active site structure for material design is still a great challenge. Herein, simple surface engineering strategy demonstrated to construct one‐unit‐cell ZnIn 2 S 4 atomic layers with the modulated energy of vacancy. Rich can regulate and control vacancy, which ensures sites, higher charge density effective carrier transport. As result, affords an obvious enhancement in H O productive rate 1592.04 µmol g −1 h , roughly 14.58 times superior that poor energy. Moreover, situ infrared diffuse reflection spectrum indicates vacancy as oxygen reduction reaction responsible critical intermediate *O − *OOH, corresponding two‐electron reaction. This study provides valuable insight guidance constructing controllably defects achieve highly efficient production.

Language: Английский

Citations

77
Promising Materials for Photocatalysis‐Self‐Fenton System: Properties, Modifications, and Applications DOI Creative Commons
Yang Wu, Huinan Che, Bin Liu

et al.

Small Structures, Journal Year: 2023, Volume and Issue: 4(7)

Published: Feb. 15, 2023

Photocatalysis‐self‐Fenton system (PSFs), which integrates photocatalysis with Fenton technology, is investigated thoroughly in wastewater treatment due to the virtues of no addition H 2 O and accelerated circulation Fe 2+ /Fe 3+ . Several kinds materials that mainly include metal‐free graphite carbon nitride (g‐C 3 N 4 ), metal oxides (Fe sulfide (CdS, FeS ) have demonstrated extensive development potential. Nevertheless, most developed catalysts are unable satisfy requirements PSFs. Therefore, a comprehensive review committed modification methods PSFs put forward. First, concrete mechanism from two aspects reaction discussed. Second, properties, modifications (morphology modulation, heterojunction construction as well doping), applications (contaminants degradation disinfection) promising emphasized. Finally, novel directions for future research looked forward to. This opens up new horizon enhancing practical application future.

Language: Английский

Citations

68
The Collision between g‐C3N4 and QDs in the Fields of Energy and Environment: Synergistic Effects for Efficient Photocatalysis DOI
Yongxi Chen, Min Cheng, Cui Lai

et al.

Small, Journal Year: 2023, Volume and Issue: 19(14)

Published: Jan. 2, 2023

Abstract Recently, graphitic carbon nitride (g‐C 3 N 4 ) has attracted increasing interest due to its visible light absorption, suitable energy band structure, and excellent stability. However, low specific surface area, finite response range (<460 nm), rapid photogenerated electron–hole (e − –h + pairs recombination of the pristine g‐C limit practical applications. The small size quantum dots (QDs) endows properties abundant active sites, wide absorption spectrum, adjustable bandgap, but inevitable aggregation. Studies have confirmed that integration QDs not only overcomes these limitations individual component, also successfully inherits each advantage. Encouraged by advantages, synthetic strategies fundamental QDs/g‐C composites are briefly elaborated in this review. Particularly, synergistic effects analyzed comprehensively, including enhancement photocatalytic performance avoidance Then, applications fields environment described further combined with DFT calculation reveal reaction mechanisms. Moreover, stability reusability analyzed. Finally, future development solution existing problems prospected.

Language: Английский

Citations

63
Multiple path-dominated activation of peroxymonosulfate by MOF-derived Fe2O3/Mn3O4 for catalytic degradation of tetracycline DOI

Chensi Tang,

Min Cheng, Cui Lai

et al.

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(5), P. 110395 - 110395

Published: June 19, 2023

Language: Английский

Citations

63
Carbon Nitrides with Grafted Dual-Functional Ligands as Electron Acceptors and Active Sites for Ultra-stable Photocatalytic H2O2 Production DOI

Pengzhan Sha,

Liang Huang, Jie Zhao

et al.

ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(15), P. 10474 - 10486

Published: July 26, 2023

Photocatalytic production of H2O2 from earth-abundant water and oxygen using low-cost metal-free carbon nitrides (CNs) through reduction is a prospective route toward greener future. However, the productivity restricted by rapid electron–hole separation low activity CNs. Herein, we rationally designed series CNs with covalently bonded dual-functional ligands acting as electron acceptors active sites to achieve high photocatalytic superior stability. The best-performing nitride displays rate 7.3 mmol/g h an apparent quantum efficiency 20.2% at 420 nm formic acid donor. Moreover, modified show excellent stable generation over 110 without significant decline. Mechanistic studies reveal that was produced 2e– reaction route. Photoluminescence, photo-electrochemical, Kelvin probe force microscopy results together theoretical calculations have revealed performance originates ligand. It not only acts acceptor promote photogenerated charge carrier withdrawing electrons but also works site accelerate lowering adsorption activation energy. this facial strategy grafting provides universal approach synthesize photocatalysts enhanced reactivity under mild conditions choosing proper for specific reaction.

Language: Английский

Citations

60
Rejoint of Carbon Nitride Fragments into Multi‐Interfacial Order‐Disorder Homojunction for Robust Photo‐Driven Generation of H2O2 DOI Creative Commons

Fengting He,

Yang‐Ming Lu,

Yuzhao Wu

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(9)

Published: Nov. 8, 2023

Abstract Photocatalytic technology based on carbon nitride (C 3 N 4 ) offers a sustainable and clean approach for hydrogen peroxide (H 2 O production, but the yield is severely limited by sluggish hot carriers due to weak internal electric field. In this study, novel devised fragmenting bulk C into smaller pieces (CN‐NH then subjecting it directed healing process create multiple order‐disorder interfaces ‐NaK). The resulting junctions in CN‐NH ‐NaK significantly boost charge dynamics facilitate more spatially orderly separated redox centers. As result, demonstrates outstanding photosynthesis of H via both two‐step single‐electron one‐step double‐electron oxygen reduction pathways, achieving remarkable 16675 µmol h –1 g , excellent selectivity (> 91%), prominent solar‐to‐chemical conversion efficiency exceeding 2.3%. These results surpass pristine 158 times outperform previously reported ‐based photocatalysts. This work represents significant advancement catalyst design modification technology, inspiring development efficient metal‐free photocatalysts synthesis highly valued fuels.

Language: Английский

Citations

59