« Previous AbstractQuantification of enhanced VOC emissions from fireworks    Next AbstractA scheduling route planning algorithm based on the dynamic genetic algorithm with ant colony binary iterative optimization for unmanned aerial vehicle spraying in multiple tea fields »

ACS Appl Mater Interfaces

Title:		Rational Design and Preparation of Pt-LDH/CeO(2) Catalyst for High-Efficiency Photothermal Catalytic Oxidation of Toluene
Author(s):		Liu Y; Pei M; Liang H; Wu X; Li B; Si Z; Kang F;
Address:		"Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China. School of Materials, Tsinghua University, Beijing 100086, China"
Journal Title:		ACS Appl Mater Interfaces
Year:		2022
Volume:		20220722
Issue:		32
Page Number:		36633 - 36643
DOI:		10.1021/acsami.2c08819
ISSN/ISBN:		1944-8252 (Electronic) 1944-8244 (Linking)
Abstract:		"Volatile organic compounds (VOCs) are attracting much more attention due to their contributions to air pollution and human health problems. Photothermal catalytic oxidation is considered as an energy-saving method for the removal of VOCs. However, the efficiency of the photothermal catalytic system is still suffering from the low activity of the catalyst due to its poor response to visible light and low efficiency of charge separation. Here, few-layer CoAl-LDH (layered double hydroxide) was prepared as an advantageous support for loading Pt nanoparticles to obtain Pt-LDH, which were coated on CeO(2) nanoparticles. Type II heterojunctions were formed on the interface of LDH and CeO(2). In photocatalysis, the hot electrons will move to CeO(2), which is better at the activation of O(2) molecules, and holes will concentrate on the LDHs, which have plenty of hydroxyls to generate *OH radicals. Furthermore, the Schottky heterojunctions between LDH and Pt nanoparticles benefit the improvement of light absorption by the localized surface plasmon resonance of Pt nanoparticles. As a consequence, a high removal rate of toluene (75.7%) at a weight-hourly space velocity of 23340 mL/(g.h) under visible light irradiation (160 mW/cm(2), lambda > 400 nm) at room temperature was achieved over the Pt-LDH/CeO(2) catalyst. The catalyst design provides a useful method to prepare high-efficiency photothermal catalysts"
Keywords:		CeO2 Pt nanoparticles VOC oxidation few-layer CoAl-LDH (layered double hydroxides) photothermal catalysis;
Notes:		"PubMed-not-MEDLINELiu, Yishui Pei, Mengxi Liang, Huanhuan Wu, Xiaodong Li, Bo Si, Zhichun Kang, Feiyu eng 2022/07/23 ACS Appl Mater Interfaces. 2022 Aug 17; 14(32):36633-36643. doi: 10.1021/acsami.2c08819. Epub 2022 Jul 22"