Interfacial Engineering of β‐Ketoenamine‐Based COFs/Urea‐Linked Perylene Diimide for Overall Photosynthesis of H2O2 in Seawater DOI Open Access
Xiaoyu Shi, Yang You, Liang Huang

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 11, 2024

Abstract High‐efficiently non‐sacrificial H 2 O production is challenging due to the sluggish kinetics of ORR and WOR severe electron‐hole recombination. Via interfacial engineering, a series non‐metal photocatalysts are rationally designed constructed, covalently bonded TpDT‐COF (TP) urea‐PDI (UP), achieve high non‐sacrificially photocatalytic in seawater. Experimental theoretical analysis has revealed that an electric field formed between TP UP, which provides internal driving force enhance separation. Further mechanistic studies reveal follows simultaneous two‐step 2e − 4e OER route. Moreover, activity toward active center at UP significantly promoted net charge transfer from after bonding. As result, rate 3846 µmol gh −1 seawater achieved. Furthermore, 4.7 mM obtained 13 h‐continuous reaction, can be directly used purify dye phenol contaminated water. Notably, strategy creating coupled with desired universal approach for photosynthesis by enhancing separation catalytic centers simultaneously.

Язык: Английский

One‐Pot Synthesis of Fully Conjugated Covalent Organic Frameworks via the Pictet–Spengler Reaction for Boosting H2O2 Photogeneration in Real Seawater DOI Open Access
Jieyu Yue,

Zi‐Xian Pan,

Ruizhi Zhang

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 24, 2025

Abstract Photosynthesizing H 2 O from real seawater is a promising and green avenue but suffers salt‐deactivated effects with limitations on stability photocatalytic activity. Herein, by the Pictet–Spengler reaction, two fully conjugated thieno[3,2‐c]pyridine‐linked covalent organic frameworks (named TBA‐COF TCA‐COF) are synthesized for photoproduction first time. Without sacrificial agents in , TCA‐COF exhibit impressive generation rates of 8878 6023 µmol g −1 h solar‐to‐chemical conversion efficiency 0.62% 0.42%, respectively, superior to their Schiff base analogs. Further experimental theoretical investigations reveal that, compared imine‐linkage counterparts, one‐pot cyclized TCA‐COF, reaction improves charge carrier separation efficiency, alters photoreduction center triazine benzene parts pyridine units, modulates energy band structures drive 2e − oxygen reduction water oxidation thereby enhances photosynthetic Notably, seawater‐produced flow reactors packed can be directly utilized E. coli sterilization. The present study highlights construction robust COFs thieno[3,2‐c]pyridine linkage via sustainable producing seawater.

Язык: Английский

Процитировано

2
Single-step conversion of low-grade magnesite to anhydrous MgCO3 based on a biodegradable salicylic acid chelating system: Characterization; DFT calculations; mechanism DOI
Jiayi Liu,

Yulian Wang,

Wanzhong Yin

и другие.

Applied Surface Science, Год журнала: 2024, Номер unknown, С. 162029 - 162029

Опубликована: Дек. 1, 2024

Язык: Английский

Процитировано

5
Localized nitride strategy to construct interfacial and electronic modulated WO3/WN nanoparticles for superior lithium-ion storage DOI
Dazhi Li,

Kesheng Gao,

Zeqing Miao

и другие.

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 677, С. 1034 - 1044

Опубликована: Авг. 22, 2024

Язык: Английский

Процитировано

3
Structural design and property regulation of organic polymers for photocatalytic synthesis of H2O2 DOI Creative Commons
Mingyang Xu,

Rongchen Shen,

Y. L. Mo

и другие.

InfoScience., Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

Abstract Hydrogen peroxide (H 2 O ), an environmentally benign oxidizer, finds extensive applications in pulp bleaching, wastewater treatment, and medical sterilization. Photocatalytic H synthesis via water oxygen activation on semiconductor surfaces presents a sustainable production strategy. Notably, structurally tunable organic photocatalysts have emerged as promising candidates, which targeted molecular engineering can boost the photocatalytic performance by enlarging specific surface areas, extending light absorption ranges, facilitating charge carrier transport‐separation dynamics. Given growing significance of synthesis, comprehensive review this field has become imperative. This paper offers systematic examination visible‐light‐driven using various photocatalysts, including graphitic carbon nitride (g‐C 3 N 4 resorcinol‐formaldehyde (RF) resin, covalent frameworks (COFs), linear conjugated polymers (LCPs). The focus lies fundamental mechanistic elucidation, design reaction pathways active sites, modification strategies, establishment efficient systems. Extensive studies correlated efficiency with interfacial electron transfer kinetics spatial separation. Therefore, we methodically analyze key determinants governing photogenerated dynamics present strategies for enhancement. Furthermore, discuss emerging application scenarios enabled generation. Importantly, critically evaluates persistent challenges cutting‐edge solutions visible‐light‐mediated ultimately providing principles developing high‐efficiency photocatalysts.

Язык: Английский

Процитировано

0
Reverse Quantum Wells in Gradient-Doped CdS for Photocatalytic H2O2 Production DOI

Xiaoying Bo,

Caijie Yang,

Bolun Li

и другие.

Inorganic Chemistry Frontiers, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Gradient Mn-doping in CdS forms reverse quantum wells and surface active sites, which enhance charge extraction O 2 activation. This achieves a H production rate of 1874 μmol g −1 h an apparent efficiency 65.2% at 475 nm.

Язык: Английский

Процитировано

0
Phenolic Resin/Cadmium Selenide Heterojunctions for Efficient Hydrogen Peroxide Production with Broad-Spectrum Light Utilization DOI
Zhanfeng Zheng, Yazhou Zhou

Applied Catalysis A General, Год журнала: 2025, Номер 703, С. 120353 - 120353

Опубликована: Май 16, 2025

Язык: Английский

Процитировано

0
Recent updates on full solar spectrum metal sulphides photocatalyst for hydrogen peroxide generation: Modification strategies and Mechanistic insights DOI

Vatika Soni,

Monika Malhotra,

Pradeep Kumar Singh

и другие.

Journal of environmental chemical engineering, Год журнала: 2024, Номер unknown, С. 115151 - 115151

Опубликована: Дек. 1, 2024

Язык: Английский

Процитировано

2
Interfacial Engineering of β‐Ketoenamine‐Based COFs/Urea‐Linked Perylene Diimide for Overall Photosynthesis of H2O2 in Seawater DOI Open Access
Xiaoyu Shi, Yang You, Liang Huang

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 11, 2024

Abstract High‐efficiently non‐sacrificial H 2 O production is challenging due to the sluggish kinetics of ORR and WOR severe electron‐hole recombination. Via interfacial engineering, a series non‐metal photocatalysts are rationally designed constructed, covalently bonded TpDT‐COF (TP) urea‐PDI (UP), achieve high non‐sacrificially photocatalytic in seawater. Experimental theoretical analysis has revealed that an electric field formed between TP UP, which provides internal driving force enhance separation. Further mechanistic studies reveal follows simultaneous two‐step 2e − 4e OER route. Moreover, activity toward active center at UP significantly promoted net charge transfer from after bonding. As result, rate 3846 µmol gh −1 seawater achieved. Furthermore, 4.7 mM obtained 13 h‐continuous reaction, can be directly used purify dye phenol contaminated water. Notably, strategy creating coupled with desired universal approach for photosynthesis by enhancing separation catalytic centers simultaneously.

Язык: Английский

Процитировано

1