Enhanced Photocatalytic Hydrogen Evolution Activity Driven by the Synergy Between Surface Vacancies and Cocatalysts: Surface Reaction Matters DOI Creative Commons

Wenhui Yue,

Ziwei Ye, Cong Liu

et al.

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

Published: Sept. 25, 2024

Abstract The incorporation of defects and cocatalysts is known to be effective in improving photocatalytic activity, yet their coupled contribution the hydrogen evolution process has not been well‐explored. In this study, We demonstrate that S vacancies NiSe can contribute improvement charge separation efficiency via formation a strong electric field within bulk ZnIn 2 4 (ZIS) on its surface. More importantly, also synergy benefits overall activity by facilitating H O adsorption dissociation process. This particularly important for taking place under alkaline conditions where proton concentration low, allowing ZISv‐NiSe (containing abundant vacancies) outperform ZIS‐NiSe conditions. contrast, acid conditions, since there are already sufficient amounts protons available reaction, became governed adsorption/desorption rather than leads exhibiting higher due more favorable energy. findings thus provide insights into how defect cocatalyst modification strategies tailor‐made improve different pH

Language: Английский

Synergistic vacancy defects and the surface hydrophobic-to-superhydrophilic wetting engineering in W/S co-doped BiOI for enhanced photocatalytic hydrogen evolution DOI

Zhengjie Su,

Chengning Ye,

Yiyang Xu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 154282 - 154282

Published: July 25, 2024

Language: Английский

Citations

30
Iso‐Elemental ZnIn2S4/Zn3In2S6 Heterojunction with Low Contact Energy Barrier Boosts Artificial Photosynthesis of Hydrogen Peroxide DOI Creative Commons
Xiaowen Ruan,

Zhao Shengli,

Minghua Xu

et al.

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

Published: June 27, 2024

Abstract Artificial photosynthesis emerges as a strategic pathway to produce hydrogen peroxide (H 2 O ), an environmentally benign oxidant and clean energy carrier. Nonetheless, in many heterojunction‐based artificial photosynthetic systems, the H productivity is significantly hindered by poor carrier transport, narrow spectral light absorption, lack of adequate active sites for two‐electron oxygen reduction reaction. Herein, catalyst architecture with iso‐elemental heterojunction formed interfacing Zn 3 In S 6 nano‐flowers ZnIn 4 nanosheets proposed. This exhibits production rate high 23.47 µmol g −1 min under UV–vis irradiation, which attributed minimized contact barrier enhanced lattice match at /Zn interface thanks aids efficient separation transfer photogenerated carriers. Theoretical simulations alongside comprehensive in‐situ ex‐situ characterizations confirm photo‐redox generation effective dynamics across surface. Moreover, substituting one reduction‐type other non‐iso‐elemental catalysts like CdIn , TiO CdS further confirms feasibility superiority proposed configuration. work offers new perspective on designing .

Language: Английский

Citations

19
In-situ growth of MIL-53 (Fe) on charcoal sponge as a highly efficient and recyclable photocatalyst for removal of Cr(VI) DOI

Zhuo-Fan Yu,

Ye Yang, Haifeng Zhuang

et al.

Rare Metals, Journal Year: 2024, Volume and Issue: 43(9), P. 4344 - 4355

Published: May 29, 2024

Language: Английский

Citations

12
Coexisting single-atomic Fe and Fe2O3 on nitrogen-deficient g-C3N4 with enriched Fenton-like oxidation and photocatalytic performances for tetracycline degradation: DFT calculation, degradation mechanism and toxicity evaluation DOI

Diejing Feng,

Bingxu Lu,

Wenjing Wu

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 350, P. 127879 - 127879

Published: May 8, 2024

Language: Английский

Citations

7
Modulating Yeager Adsorption Configuration of O2 Through Cd Doping in Zn3In2S6 for Photosynthesis of H2O2 DOI

Dongxu Jiao,

Chunsheng Ding,

Minghua Xu

et al.

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

Published: Oct. 14, 2024

Abstract The photocatalytic oxygen reduction reaction (ORR) is a key pathway for producing hydrogen peroxide (H 2 O ). While most previous studies have focused on the two‐step 2e − ORR process, one‐step two‐electron route offers thermodynamic and kinetic advantages that can significantly enhance activity selectivity. In this study, photocatalyst design reported by incorporating cadmium into vacancy‐rich Zn 3 S 6 (Cd‐S V /ZIS). This catalyst enables H production via process without use of sacrificial agents, achieving high yield 39.42 µmol g −1 min under UV–vis light irradiation, outperforming ZIS‐based photocatalysts. Theoretical simulations experimental results demonstrate Cd doping improves carrier kinetics catalyst, broadens its absorption range, promotes Yeager adsorption configuration , leading to highly active selective generation. study provides insights efficient photocatalysts production.

Language: Английский

Citations

7
Coupling Water Oxidation and Oxygen Reduction for Photocatalytic H2O2 Production over ZnIn2S4/UiO66-NH2 Heterojunctions via Dual Channel Pathways DOI
Miao Li, Long Chen, Ying Yang

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Artificial photosynthesis of hydrogen peroxide (H2O2) from oxygen and water is a promising approach for converting low-density solar energy into versatile chemical energy. However, the generation H2O2 through single-channel reduction reaction (ORR) prevalent, while oxidation (WOR) frequently neglected. Herein, we constructed Z-scheme ZnIn2S4/UiO66-NH2 (ZIS/UNH) heterojunctions, integrating ORR WOR dual pathways photocatalytic without noble cocatalysts sacrificial agents. The optimized ZIS/UNH exhibits highest yield 0.85 mmol g-1 h-1, which 2.2 14 times those ZIS UNH, respectively. formation heterojunction efficiently promotes separation transfer photogenerated carriers retaining holes with high oxidizing ability electrons strong reducing ability. free radical quenching DMPO-ESR trapping experiments demonstrate that heterojunctions produce in dual-channel mode different ZIS. generated by consist two-step single-electron ·O2- as an intermediate product direct one-step WOR.

Language: Английский

Citations

1
Bi Quantum Dots Supported on BiOBr Nanoparticles and Loaded on Porous ZnO as a Photocatalyst for Dye Degradation and H2 Production DOI
Xin Guan, Shuang Ma,

Jia-bao Yu

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(8), P. 8716 - 8729

Published: April 12, 2024

Synergetic photocatalytic H2 production by organic dye photodegradation is always a goal. However, the related research has been hindered due to uncontrollability of this process. This study prepares ZnO/Bi-QDs/BiOBr photocatalyst, and hole (h+) aggregation phase (ZnO) constructed into lamellar porous structure improve its adsorption capacity for dyes based on energy level composite. By method, reactive groups used are controlled h+ •OH, e– production, synergistic effect realized. Under action photocatalyst visible light, rhodamine B (RhB) completely degraded in 8 min, time can be reduced 2 min when pH 5, it realize complete degradation RhB 120 under natural sunlight. The rate reaches 1678 μmol·g–1·h–1 (h+ scavenger) aqueous solution light. provides an effective method design idea photocatalysts with during dyes.

Language: Английский

Citations

6
General Synthesis of Metal Indium Sulfide Atomic Layers for Photocatalysis DOI
Jun Di, Chao Chen, Chao Zhu

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: May 19, 2024

The metal indium sulfides have attracted extensive research interest in photocatalysis due to regulable atomic configuration and excellent optoelectronic properties. However, the synthesis of sulfide layers is still challenging since intrinsic non-van-der-Waals layered structures some components. Here, a surfactant self-assembly growth mechanism proposed controllably synthesize layers. Eleven types with tunable compositions, thickness, defect concentrations are successfully achieved namely In

Language: Английский

Citations

6
Boosting Formate Production in Electrocatalytic CO2 Reduction on Bimetallic Catalysts Enriched with In–Zn Interfaces DOI
Ruirui Zhao, Huihua Luo,

Ting Ouyang

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(52), P. 35749 - 35757

Published: Dec. 18, 2024

We present an effective strategy for developing the dispersing strong-binding metal In on surface of weak-binding Zn, which modulates binding energy reaction intermediates and further facilitates efficient conversion CO2 to formate. The In-Zn interface (In-Zn2) benefits from formation active sites through favorable orbital interactions, leading a Faradaic efficiency 82.7% formate partial current density 12.39 mA cm-2, along with stable performance over 15 h at -1.0 V versus reversible hydrogen electrode. Both in situ Fourier transform infrared spectroscopy functional theory calculations show that bimetallic catalyst can deliver superior *OCHO intermediate, thereby fundamentally accelerating addition, exposed promotes capture activation molecules dynamics within significantly reduce barrier associated generation HCOO-, thus augmenting selectivity catalytic activity generation.

Language: Английский

Citations

6
One-step synthesis N, O co-doped ZnIn2S4 for efficient photocatalytic H2 production and Cr(VI) reduction DOI
Min Zhang, Mingxuan Du,

Yuhang Ren

et al.

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(4), P. 113261 - 113261

Published: June 5, 2024

Language: Английский

Citations

5