Impact of oxygen vacancy density in modified cobalt oxide nanoparticles on the efficiency of visible-light photocatalysis

被引：0

作者：

Jeon, Hyeri ^{[1
,2
]}

Hwang, Sunyoung ^{[3
]}

Kang, Taeyeon ^{[4
]}

Hong, Seungwoo ^{[1
,2
]}

Ahn, Hyun S. ^{[4
]}

Lee, Hangil ^{[3
]}

机构：

[1] Ewha Womans Univ, Dept Chem & Nanosci, Seoul 03760, South Korea

[2] Ewha Womans Univ, Grad Program Innovat Biomat Convergence, Seoul 03760, South Korea

[3] Sookmyung Womens Univ, Dept Chem, Seoul 04310, South Korea

[4] Yonsei Univ, Dept Chem, 50 Yonsei Ro, Seoul 03722, South Korea

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2025年 / 177卷

基金：

新加坡国家研究基金会;

关键词：

Surface oxygen vacancy; Base treated CoO; Li-deposited CoO NPs; Photocatalytic activity; Photocatalyst; BAND-GAP; COO; ELECTROCATALYSTS; HETEROJUNCTION; PHOTOOXIDATION; SEPARATION; NANOTUBES; OXIDATION; BIOCL;

D O I：

10.1016/j.inoche.2025.114287

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

This study demonstrates enhanced photocatalysis on cobalt oxide nanoparticles (CoO NPs) by increasing the surface density of oxygen vacancies (Vos), achieved through base treatment and subsequent Li ion deposition. Surface Li-ion-doped CoO NPs exhibited significantly improved biomass oxidation capabilities. Li doping effectively scavenged oxygen from CoO NPs, resulting in a substantial increase in Vos and modifications to the surface structure. The induced surface defects, combined with energy engineering, enhanced the photocatalytic oxidation of biomolecules, such as 2,5-hydroxymethylfurfural. This study serves as a proof of concept, highlighting the potential of purpose-driven and mechanism-specific surface modification and defect engineering techniques, while emphasizing the need for their development and appropriate application.

引用

页数：10

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