High performance H2O2 production achieved by sulfur-doped carbon on CdS photocatalyst via inhibiting reverse H2O2 decomposition

被引：122

作者：

Lee, Jae Hwa ^{[1
]}

Cho, Hyeonjin ^{[2
]}

Park, Sung O. ^{[2
]}

Hwang, Jeong Min ^{[1
]}

Hong, Yerin ^{[2
]}

Sharma, Pankaj ^{[2
]}

Jeon, Woo Cheol ^{[2
]}

Cho, Yongjoon ^{[2
]}

Yang, Changduk ^{[2
]}

Kwak, Sang Kyu ^{[2
]}

Moon, Hoi Ri ^{[1
]}

Jang, Ji-Wook ^{[2
]}

机构：

[1] Ulsan Natl Inst Sci & Technol UNIST, Dept Chem, 50 UNIST Gil, Ulsan 44919, South Korea

[2] Ulsan Natl Inst Sci & Technol UNIST, Sch Energy & Chem Engn, Dept Energy Engn, 50 UNIST Gil, Ulsan 44919, South Korea

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2021年 / 284卷

基金：

新加坡国家研究基金会;

关键词：

CdS; Sulfur-doped carbon; Metal-organic frameworks; Photocatalysis; Hydrogen peroxide; HYDROGEN-PEROXIDE FORMATION; TITANIUM-DIOXIDE; MOLECULAR-OXYGEN; REDUCTION; MECHANISM; EFFICIENT; DYNAMICS; NITRIDE; SOLIDS; WATER;

D O I：

10.1016/j.apcatb.2020.119690

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：

Solar production of hydrogen peroxide (H2O2) from oxygen gas and water using photocatalysts is a safe, cost-effective, and eco-friendly method. However, the development of efficient photocatalysts has been impeded by their high decomposition rate of photogenerated H(2)O(2 )on the surface of photocatalysts. Here we report CdS/sulfur-doped carbon nanocomposites prepared by adopting a Cd- and S-containing metal-organic framework as a precursor. The intimate contact between the two components provoked their synergetic effect for much better H2O2 production performance than that of commercial CdS, where the hydrophobic sulfur-doped carbon prevent the approach of H2O2 and suppress its decomposition. Resultingly, it recorded H2O2 concentration of 17.1 mM under visible light irradiation in KOH solution with 2-propanol as a hole scavenger, which is the highest value among all the reported photocatalysis systems. This value is sufficiently high to be directly utilized in area of bleaching and acidic waste treatments.

引用

页数：11

共 52 条

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APPLIED CATALYSIS B-ENVIRONMENTAL, 2020, 267

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