Bimetallic nickel molybdate supported Pt catalyst for efficient removal of formaldehyde at low temperature  

作　　者：Gang Huang Zhaoxiong Yan Shuyuan Liu Tingting Luo Liang An Zhihua Xu 

机构地区：[1]Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances,and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education,Jianghan University,Wuhan 430056,China [2]Department of Pharmacology,Shenyang Medical College,Shenyang 110034,China [3]Materials Analysis Center,Wuhan University of Technology,Wuhan 430070,China

出　　处：《Journal of Environmental Sciences》2020年第1期173-183,共11页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21577046 and 21871111);Wuhan Morning Light plan of Youth Science and Technology(No.2017050304010327)

摘　　要：Efficient removal of formaldehyde from indoor environments is of significance for human health.In this work,a typical binary transition metal oxide that could provide various oxidation states,β-NiMoO4,was employed as a support to immobilize the active Pt component(Pt/NiMoO4)for catalytic formaldehyde elimination at low ambient temperature(15℃).The results showed that the hydrothermal preparation temperature and time had a noticeable impact on the morphology and catalytic activity of the samples.The catalyst prepared with hydrothermal temperature of 150℃for 4 hr(Pt-150-4)exhibited superior catalytic activity and stability mainly due to its distinctly porous structure,relative abundance of adsorbed surface hydroxyls/water,and high oxidation ability,which resulted from the interaction of Pt with Ni and Mo of the bimetallic NiMoO4 support.Our results might shed light on the rational design of multifunctional catalysts for removal of indoor air pollutants at low ambient temperature.Efficient removal of formaldehyde from indoor environments is of significance for human health.In this work,a typical binary transition metal oxide that could provide various oxidation states,β-NiMoO4,was employed as a support to immobilize the active Pt component（Pt/NiMoO4） for catalytic formaldehyde elimination at low ambient temperature（15℃）.The results showed that the hydrothermal preparation temperature and time had a noticeable impact on the morphology and catalytic activity of the samples.The catalyst prepared with hydrothermal temperature of 150℃ for 4 hr（Pt-150-4） exhibited superior catalytic activity and stability mainly due to its distinctly porous structure,relative abundance of adsorbed surface hydroxyls/water,and high oxidation ability,which resulted from the interaction of Pt with Ni and Mo of the bimetallic NiMoO4 support.Our results might shed light on the rational design of multifunctional catalysts for removal of indoor air pollutants at low ambient temperature.

关 键 词：Catalytic oxidation HCHO removal Supported Pt nanoparticles NiMoO4 nanoflakes Ambient temperature Porous structure 

分 类 号：X701[环境科学与工程—环境工程]