Ternary Co3O4/CdS/SrTiO3 core-shell pn junctions toward enhanced photocatalytic hydrogen production activity

被引：39

作者：

Chen, Zhanfen ^{[1
,2
]}

Pan, Jiaqi ^{[1
,2
]}

Mei, Jie ^{[1
,2
,3
]}

Yu, Qi ^{[1
,2
]}

Wang, Panhong ^{[1
,2
]}

Wang, Peipei ^{[1
,2
]}

Wang, Jingjing ^{[1
,2
]}

Song, Changsheng ^{[1
,2
]}

Zheng, Yingying ^{[1
,2
]}

Li, Chaorong ^{[1
,2
]}

机构：

[1] Zhejiang Sci Tech Univ, Dept Phys, Key Lab Opt Field Manipulat Zhejiang Prov, Minist Educ, Hangzhou 310018, Peoples R China

[2] Zhejiang Sci Tech Univ, Dept Phys, Key Lab ATMMT, Minist Educ, Hangzhou 310018, Peoples R China

[3] Nanjing Normal Univ, Sch Chem & Bioengn, Taizhou Coll, Nanjing, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2021年 / 9卷 / 01期

关键词：

Ternary Pn junction; Core shell; Photocatalytic hydrogen production; Stability; N HETEROJUNCTION; H-2; EVOLUTION; CDS NANORODS; LARGE-AREA; PERFORMANCE; NANOPARTICLES; TRANSPARENT; FABRICATION; MOS2; COMPOSITES;

D O I：

10.1016/j.jece.2020.104895

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A ternary Co3O4/CdS/SrTiO3 core-shell pn junction is fabricated via a simple hydrothermal-chemicalphotodeposition method. Herein, a CdS shell is deposited on the surface of a SrTiO3 nanosphere, and then ptype Co3O4 lamellas are grown on the surface of the CdS/SrTiO3 core-shell heterojunction. Evaluated by its hydrogen evolution ability, the as-prepared ternary Co3O4/CdS/SrTiO3 core-shell pn junction exhibits an obvious photocatalytic enhancement of similar to 15-fold compared to single SrTiO3 nanospheres. This improvement can be mainly ascribed to the narrow band gaps of CdS and Co3O4 increasing the visible light response, and the ternary core-shell pn junction quickly transferring/diffusing photogenerated charge carriers into water. Additionally, the core-shell structure can provide sufficient active sites, and the ultrathin Co3O4 lamellas can shorten the photoelectron transport path to improve the photocatalytic stability.

引用

页数：10

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