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

被引：40
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.
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页数：10
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