TY - JOUR

T1 - Two‐Dimensional Layered Zinc Silicate Nanosheets with Excellent Photocatalytic Performance for Organic Pollutant Degradation and CO2 Conversion

AU - Wang, Lang

AU - Bahnemann, Detlef

AU - Bian, Liang

AU - Dong, Guohui

AU - Zhao, Jie

AU - Wang, Chuanyi

N1 - Funding Information: [*] Dr. L. Wang Laboratory of Environmental Sciences and Technology Xinjiang Technical Institute of Physics and Chemistry; Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences Urumqi 830011 (China) E-mail: wanglan@ms.xjb.ac.cn Dr. G. H. Dong, Dr. J. Zhao, Prof. C. Y. Wang School of Environmental Science and Engineering Shaanxi University of Science and Technology Xian 710021 (China) E-mail: cywang@ms.xjb.ac.cn Prof. D. W. Bahnemann Laboratorium für Nano-und Quantenengineering Leibniz Universität Hannover Schneiderberg 39, 30167 Hannover (Germany) Dr. L. Bian Key Laboratory of Solid Waste Treatment and Resource Recycle South West University of Science and Technology Mianyang 621010 (China) Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.org/10.1002/anie.201903027.

PY - 2019/6/11

Y1 - 2019/6/11

N2 - Two-dimensional (2D) photocatalysts are highly attractive for their great potential in environmental remediation and energy conversion. Herein, we report a novel layered zinc silicate (LZS) photocatalyst synthesized by a liquid-phase epitaxial growth route using silica derived from vermiculite, a layered silicate clay mineral, as both the lattice-matched substrate and Si source. The epitaxial growth of LZS is limited in the 2D directions, thus generating the vermiculite-type crystal structure and ultrathin nanosheet morphology with thicknesses of 8–15 nm and a lateral size of about 200 nm. Experimental observations and DFT calculations indicated that LZS has a superior band alignment for the degradation of organic pollutants and reduction of CO 2 to CO. The material exhibited efficient photocatalytic performance for 4-chlorophenol (4-CP) degradation and CO 2 conversion into CO and is the first example of a claylike 2D photocatalyst with strong photooxidation and photoreduction capabilities.

AB - Two-dimensional (2D) photocatalysts are highly attractive for their great potential in environmental remediation and energy conversion. Herein, we report a novel layered zinc silicate (LZS) photocatalyst synthesized by a liquid-phase epitaxial growth route using silica derived from vermiculite, a layered silicate clay mineral, as both the lattice-matched substrate and Si source. The epitaxial growth of LZS is limited in the 2D directions, thus generating the vermiculite-type crystal structure and ultrathin nanosheet morphology with thicknesses of 8–15 nm and a lateral size of about 200 nm. Experimental observations and DFT calculations indicated that LZS has a superior band alignment for the degradation of organic pollutants and reduction of CO 2 to CO. The material exhibited efficient photocatalytic performance for 4-chlorophenol (4-CP) degradation and CO 2 conversion into CO and is the first example of a claylike 2D photocatalyst with strong photooxidation and photoreduction capabilities.

KW - CO reduction

KW - layered zinc silicates

KW - nanosheets

KW - photocatalysis

KW - pollutant degradation

UR - http://www.scopus.com/inward/record.url?scp=85065800380&partnerID=8YFLogxK

U2 - 10.1002/anie.201903027

DO - 10.1002/anie.201903027

M3 - Article

VL - 58

SP - 8103

EP - 8108

JO - Angewandte Chemie

JF - Angewandte Chemie

SN - 0044-8249

IS - 24

ER -