Bandgap engineering control bifunctional MnxCd1-xS photocatalysts selectively reforming xylose to C3 organic acids and efficient hydrogen production

被引：9

作者：

Liu, Yuqi ^{[1
]}

Kang, Fuyan ^{[1
]}

Bi, Chunyu ^{[1
]}

Shi, Junming ^{[1
]}

Gao, Guoyang ^{[1
]}

An, Yulong ^{[1
]}

Huang, Zhanhua ^{[1
]}

机构：

[1] Northeast Forestry Univ, Mat Sci & Engn Coll, Key Lab Biobased Mat Sci & Technol, Minist Educ, Harbin 150040, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2023年 / 652卷

基金：

中国国家自然科学基金;

关键词：

MnxCd1-xS; Photoreformation; Xylose; C3 organic acids; H-2; production; P-N HETEROJUNCTION; EVOLUTION; BIOMASS;

D O I：

10.1016/j.jcis.2023.09.023

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The simultaneous reforming of biomass into high value-added chemicals and H-2 production by water splitting in a green and environmentally clean way is a very challenging task. Herein, we demonstrate the design of bifunctional MnxCd1-xS photocatalyst with a controllable band gap by bandgap engineering. Bandgap engineering effectively regulates the oxidation and reduction capacity of materials. The design of photocatalysts with suitable conduction bands and valence bands makes the targeted conversion of xylose possible. Innovative conversion of xylose to glyceric acid, lactic acid, and propanoic acid. The optimized Mn0.7Cd0.3S catalyst showed excellent performance in the production of H-2 (14.06 mmol.g(cat)(-1).h(-1), 29.9 times more than CdS and 351.5 times more than MnS), xylose conversion (90%), and C3 organic acid yield (59.2%) without cocatalyst and any scavengers under visible light irradiation. This work shows that a rational photocatalyst design can achieve efficient simultaneous production of high value-added chemicals and clean energy.

引用

页码：2066 / 2075

页数：10