Recent Progress in Nonsacrificial H2O2 Generation Using Organic Photocatalysts and In Situ Applications for Environmental Remediation DOI
Yaning Zhang, Chengsi Pan, Junshan Li

et al.

Accounts of Materials Research, Journal Year: 2023, Volume and Issue: 5(1), P. 76 - 88

Published: Dec. 15, 2023

ConspectusThe photocatalytic generation of hydrogen peroxide (H2O2) through the utilization only H2O, O2, and sunlight represents an energy-efficient ecofriendly innovation in pursuit a sustainable society. Despite significant efforts that have been directed toward development H2O2 via photocatalysis, solar-to-chemical conversion (SCC) efficiency has not yet reached levels required for large-scale practical applications. Consequently, there is urgent demand to develop design novel photocatalysts characterized by several key attributes: high catalytic activity, cost-effectiveness, good stability. However, traditional inorganic photocatalysts, such as TiO2, exhibited limited partly attributable potential decomposition caused metal cations. Recent research found organic highly promising candidates address these limitations. Organic materials offer remarkable advantages including narrow bandgap, adjustable band edge potentials, ability control surface configurations use active sites, rational structural units promote efficient charge separation transfer. In field without sacrificial reagents, widely studied, various strategies improve activity stability explored. These include construction donor–acceptor structures, conjugated incorporation heteroatoms, enhancement internal electric field, substitution functional groups. Currently, exceptional far exceeding well-established TiO2.In this Account, we introduce state-of-the-art based on our recent works typical results from other This classification system encompasses anthraquinone-mediated oxygen reduction reaction (ORR), radical-related ORR, water oxidation (WOR), dual ORR WOR pathways. Through classification, delve into essential kinetic parameters, production rate, apparent quantum (AQE), SCC achieved. Additionally, highlight early exploration situ generated environmental remediation. Furthermore, outline forthcoming challenges suboptimal solar energy utilization, need clearer understanding structure–activity relationship, insufficient utilization. conclusion, Account makes substantial contribution providing comprehensive overview advancements us groups, addressing current challenges, suggesting areas future generation. The ultimate goal drive forward applications semiconductor fields, thereby advancing cause

Language: Английский

Efficient photocatalytic H2O2 production over K+-intercalated crystalline g-C3N4 with regulated oxygen reduction pathway DOI
Qiqi Zhang,

Bing Wang,

Hui Miao

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 482, P. 148844 - 148844

Published: Jan. 21, 2024

Language: Английский

Citations

32
Order–Disorder Engineering of Carbon Nitride for Photocatalytic H2O2 Generation Coupled with Pollutant Removal DOI
Qing Xu, Jiaqi Wu,

Yangzhu Qian

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(1), P. 784 - 794

Published: Jan. 2, 2024

Highly crystalline carbon nitride (CCN), benefiting from the reduced structural imperfections, enables improved electron-hole separation. Yet, phase with insufficient inherent defects suffers a poor performance toward reaction intermediate adsorption respect to amorphous phase. Herein, crystalline-amorphous (CACN) an isotype structure was constructed via two-step adjacent calcination strategy. Through specific oxygen etching and crystallization, formation of built-in electric field at interface could drive charge transfer separation, thus promoting photoredox reaction. As expected, optimized CACN exhibited H

Language: Английский

Citations

19
Self‐Floating Photocatalytic System for Highly Efficient Hydrogen Peroxide Production and Organic Synthesis on Carbon Dots Decorated Conjugated Microporous Polymer DOI
Xueqing Li,

Guping Zhang,

Najun Li

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(28)

Published: Feb. 15, 2024

Abstract Photocatalytic oxygen (O 2 ) reduction to hydrogen peroxide (H O is considered be a promising method for energy storage. However, it suffers from the rapid recombination of carriers, limited solubility and slow diffusion , self‐decomposition H in traditional diphase systems. Here, self‐floating carbon dots/conjugated microporous polymer (CDs/CMP) photocatalytic system established production organic synthesis. Due D–π–A structure, porous hydrophobicity, CMP induced intramolecular charge transfer, exposed abundant reaction sites, enhanced adsorption. CDs act as “bridges” electron transmission regulate surface hydrophobicity CMP, further improving transfer optimizing interface. CDs/CMP exhibits high 8542.6 µmol g −1 h concurrent furoic acid at 2.22 m . This rate ≈90% higher than that system, exceeding all previously reported photocatalysts triphase Notably, achieves relative separation suppressing generated self‐decomposition. Theoretical calculations situ characterizations reveal mechanism evolution. provides insights into exploring application metal‐free heterogeneous reactions.

Language: Английский

Citations

19
Recent Advances on Carbon‐Based Metal‐Free Electrocatalysts for Energy and Chemical Conversions DOI Creative Commons
Qingfeng Zhai,

Hetaishan Huang,

Tom Lawson

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 25, 2024

Over the last decade, carbon-based metal-free electrocatalysts (C-MFECs) have become important in electrocatalysis. This field is started thanks to initial discovery that nitrogen atom doped carbon can function as a electrode alkaline fuel cells. A wide variety of nanomaterials, including 0D dots, 1D nanotubes, 2D graphene, and 3D porous carbons, has demonstrated high electrocatalytic performance across applications. These include clean energy generation storage, green chemistry, environmental remediation. The applicability C-MFECs facilitated by effective synthetic approaches, e.g., heteroatom doping, physical/chemical modification. methods enable creation catalysts with properties useful for sustainable transformation storage (e.g., cells, Zn-air batteries, Li-O

Language: Английский

Citations

19
Recent progress in perylene diimide supermolecule-based photocatalysts DOI
Bin Yang,

LU Li-liang,

Shiyu Liu

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(7), P. 3807 - 3843

Published: Jan. 1, 2024

This review focuses on recent advancements in perylene diimide supramolecular (PDI)-based photocatalysts.

Language: Английский

Citations

18
Energy band engineering of graphitic carbon nitride for photocatalytic hydrogen peroxide production DOI Creative Commons
Tengyang Gao,

Degui Zhao,

Sàisài Yuán

et al.

Carbon Energy, Journal Year: 2024, Volume and Issue: 6(11)

Published: July 9, 2024

Abstract Hydrogen peroxide (H 2 O ) is one of the 100 most important chemicals in world with high energy density and environmental friendliness. Compared anthraquinone oxidation, direct synthesis H hydrogen oxygen (O ), electrochemical methods, photocatalysis has characteristics low consumption, easy operation less pollution, broad application prospects generation. Various photocatalysts, such as titanium dioxide (TiO graphitic carbon nitride (g‐C 3 N 4 metal‐organic materials, nonmetallic have been studied for production. Among them, g‐C which are simple to synthesize functionalize, attracted wide attention. The electronic band structure shows a bandgap 2.77 eV, valence maximum 1.44 V, conduction minimum −1.33 theoretically meets requirements In comparison semiconductor materials like TiO (3.2 eV), this material smaller bandgap, results more efficient response visible light. However, photocatalytic activity yield were severely inhibited by electron‐hole pair recombination rate, utilization rate light, poor selectivity products. Although previous reviews also presented various strategies improve production, they did not systematically elaborate inherent relationship between control their structure. From point view, article focuses on engineering latest research progress On basis, strategy production proposed through morphology control, crystallinity defect, doping, combined other strategies. Finally, challenges industrialization discussed envisioned.

Language: Английский

Citations

16
Structurally Locked High-Crystalline Covalent Triazine Frameworks Enable Remarkable Overall Photosynthesis of Hydrogen Peroxide DOI
Ling Zhang,

Congxu Wang,

Qike Jiang

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(43), P. 29943 - 29954

Published: Oct. 17, 2024

The development of green and efficient hydrogen peroxide (H

Language: Английский

Citations

16
Aminobenzaldehyde convelently modified graphitic carbon nitride photocatalyst through Schiff base reaction: Regulating electronic structure and improving visible-light-driven photocatalytic activity for moxifloxacin degradation DOI
Yi Liu,

Changhao Bian,

Yingshuang Li

et al.

Journal of Colloid and Interface Science, Journal Year: 2022, Volume and Issue: 630, P. 867 - 878

Published: Oct. 20, 2022

Language: Английский

Citations

64
Point-to-faceZ-scheme junction Cd0.6Zn0.4S/g-C3N4with a robust internal electric field for high-efficiency H2O2production DOI
Wenying Yu, Zijian Zhu, Cheng Hu

et al.

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(12), P. 6384 - 6393

Published: Jan. 1, 2023

Point-to-face Z -scheme Cd 0.6 Zn 0.4 S/g-C 3 N 4 with a robust internal electric field was synthesized by an in situ growth strategy and showed highly efficient H 2 O production activity.

Language: Английский

Citations

37
Recent developments in lead-free bismuth-based halide perovskite nanomaterials for heterogeneous photocatalysis under visible light DOI
Zehong Wu, Harun Tüysüz, Flemming Besenbacher

et al.

Nanoscale, Journal Year: 2023, Volume and Issue: 15(12), P. 5598 - 5622

Published: Jan. 1, 2023

This mini-review presents a brief overview of recent progress in bismuth-based halide perovskite (BHP) nanomaterials for heterogeneous photocatalysis under visible light, including the synthesis and physical–chemical properties advanced BHPs.

Language: Английский

Citations

34