Interface engineering via temperature-dependent self-transformation on SnS2/SnS for enhanced piezocatalysis

被引：5

作者：

Tian, Wenrou ^{[1
]}

Han, Jun ^{[1
]}

Li, Najun ^{[1
]}

Chen, Dongyun ^{[1
]}

Xu, Qingfeng ^{[1
]}

Li, Hua ^{[1
]}

Lu, Jianmei ^{[1
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Suzhou 215123, Jiangsu, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2024年 / 64卷

关键词：

Piezocatalysis; Self-transformation; Phase junction; Interfacial field; Polarized field; PERFORMANCE; WATER; NANOSHEETS; EFFICIENT;

D O I：

10.1016/S1872-2067(24)60101-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Heterojunction has been widely used in vibration-driven piezocatalysis for enhanced charges separation, while the weak interfaces seriously affect the efficiency during mechanical deformations due to prepared by traditional step-by-step methods. Herein, the intimate contact interfaces with shared S atoms are ingeniously constructed in SnS2/SnS anchored on porous carbon by effective interface engineering, which is in-situ derived from temperature-dependent self-transformation of SnS2. Benefiting from intimate contact interfaces, the piezoelectricity is remarkably improved due to the larger interfacial dipole moment caused by uneven distribution of charges. Importantly, vibration-induced piezoelectric polarization field strengthens the interfacial electric field to further promote the separation and migration of charges. The dynamic charges then transfer in porous carbon with high conductivity and adsorption for significantly improved piezocatalytic activity. The degradation efficiency of bisphenol A (BPA) is 6.3 times higher than SnS2 and H-2 evolution rate is increased by 3.8 times. Compared with SnS2/SnS prepared by two-step solvothermal method, the degradation efficiency of BPA and H-2 evolution activity are increased by 3 and 2 times, respectively. It provides a theoretical guidance for developing various multiphase structural piezocatalyst with strong interface interactions to improve the piezocatalytic efficiency. (c) 2024, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：166 / 179

页数：14

共 55 条

[1] Enhanced Piezoelectric Output Performance of the SnS2/SnS Heterostructure Thin-Film Piezoelectric Nanogenerator Realized by Atomic Layer Deposition [J].