Hierarchical Bifunctional NiO Electrocatalyst: Highly Porous Structure Boosting the Water Splitting Activity DOI
Sunny Sarkar,

Sk Afsar Ali,

Saheli Sarkar

et al.

Chemistry - An Asian Journal, Journal Year: 2024, Volume and Issue: 19(22)

Published: Aug. 17, 2024

Abstract The development of an efficient, low‐cost and earth‐abundant electrocatalyst for water splitting is crucial the production sustainable hydrogen energy. However their practical applications are largely restricted by limited synthesis methods, large overpotential low surface area. Hierarchical materials with a highly porous three‐dimensional nanostructure have garnered significant attention due to exceptional electrocatalytic properties. These hierarchical frameworks enable fast electron transfer, rapid mass transport, high density unsaturated metal sites maximize product selectivity. Here process involved obtaining monodispersed microrod‐shaped Ni(OH) 2 through hydrothermal reaction, followed heat treatment convert it into NiO materials. N sorption analysis revealed that BET area increased from 9 89 m /g as result treatment. demonstrated outstanding bifunctional capabilities, excelling in both HER OER basic solution. Overpotential 347 mV achieved at 10 mA/cm activity, Tafel slope 77 mV/dec. Similarly, 488 62

Language: Английский

pH-Triggered Phase Transitions, Coexposure of (001) and (110) Facets, and Oxygen Vacancies in BiOCl Photocatalysts DOI
Y Wulandari, Fitri Aulia Permatasari, Reza Umami

et al.

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

Published: Jan. 21, 2025

Bismuth oxychloride (BiOCl) is known for its unique layered microstructure, which plays a pivotal role in enhancing photocatalytic properties. This study introduces novel strategy controlling the phase composition, facet orientation, and oxygen vacancy formation BiOCl through precise pH adjustment during synthesis. By employing hydrothermal method, we systematically varied to produce distinct phases conducted detailed structural analyses. Remarkably, synthesized at = 7 demonstrated superior activity on rhodamine B (RhB) degradation, can be attributed coexposure of (001) (110) facets, as well an increased concentration vacancies. Density functional theory also revealed that high vacancies leads enhanced charge separation, beneficial activity. These results indicate optimizing synthesis viable approach efficiency BiOCl, offering significant potential advanced applications environmental remediation solar energy conversion.

Language: Английский

Citations

0
Surface Oxygen Vacancy Engineering for Enhanced Volatile Organic Compounds Removal in Solar-Interfacial Water Evaporation DOI

Dailin Yang,

Yang Guo,

Ziwei Yu

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 2, 2025

Solar-interfacial water-vapor conversion has emerged as a promising method for clean water production, particularly in water-scarce regions, but major challenge is the volatile organic compounds (VOCs) along with vapor, leading to polluted condensed water. This study introduces novel design strategy that leverages surface oxygen vacancies (OVs) photocatalysts maximize both (O2) utilization from air and photocarrier efficiency at air-water interface, building upon previous research demonstrated concentration interface can be significantly higher than bulk By enhancing adsorption facilitating charge carrier separation, OVs improve reactive species (ROS, including ·O2- ·OH) generation overall photocatalytic activity. As demonstration, OVs-engineered BiOCl-based solar interfacial evaporator 3.41-fold increase VOC (phenol) removal compared conventional system, achieving over 99.6% maintaining high vapor flux of 1.90 kg/m2/h. innovative was further validated using ZnO-based photocatalysts, demonstrating broad applicability OV-engineering systems. fully utilizing content improving dynamics, this approach represents significant advancement treatment technologies, offering scalable highly efficient solution production.

Language: Английский

Citations

0
Reconstruction of surface defects in Bi2MoO6 induced by amorphous ZnO for ultra-fast photocatalytic purification of Cr(VI) DOI
Lili Yao, Cheng-zhao Jin,

Xinan Yang

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(3), P. 116553 - 116553

Published: April 11, 2025

Language: Английский

Citations

0
Construction of PCN-222(Pt)/BiOCl heterojunction with built-in electric field drive charge separation for enhanced photocatalytic performance DOI
Lina Li, Gaopeng Liu, Jintao Dong

et al.

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162978 - 162978

Published: March 1, 2025

Language: Английский

Citations

0
Construction of nitrogen-doped graphene/BiOCl Schottky heterojunction for efficient photocatalytic degradation and CO2 reduction DOI
Tao Ding,

Yiran Hu,

Zhen Nie

et al.

Environmental Research, Journal Year: 2024, Volume and Issue: 264, P. 120315 - 120315

Published: Nov. 10, 2024

Language: Английский

Citations

1
Hierarchical Bifunctional NiO Electrocatalyst: Highly Porous Structure Boosting the Water Splitting Activity DOI
Sunny Sarkar,

Sk Afsar Ali,

Saheli Sarkar

et al.

Chemistry - An Asian Journal, Journal Year: 2024, Volume and Issue: 19(22)

Published: Aug. 17, 2024

Abstract The development of an efficient, low‐cost and earth‐abundant electrocatalyst for water splitting is crucial the production sustainable hydrogen energy. However their practical applications are largely restricted by limited synthesis methods, large overpotential low surface area. Hierarchical materials with a highly porous three‐dimensional nanostructure have garnered significant attention due to exceptional electrocatalytic properties. These hierarchical frameworks enable fast electron transfer, rapid mass transport, high density unsaturated metal sites maximize product selectivity. Here process involved obtaining monodispersed microrod‐shaped Ni(OH) 2 through hydrothermal reaction, followed heat treatment convert it into NiO materials. N sorption analysis revealed that BET area increased from 9 89 m /g as result treatment. demonstrated outstanding bifunctional capabilities, excelling in both HER OER basic solution. Overpotential 347 mV achieved at 10 mA/cm activity, Tafel slope 77 mV/dec. Similarly, 488 62

Language: Английский

Citations

0