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

• 作 者: Gang Huang Zhaoxiong Yan Shuyuan Liu Tingting Luo Liang An Zhihua Xu
• 机 构: Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, and Key Lab
• 出 处: 环境科学学报（英文版）
• 发表日期: 2020年1期
• 关键词: Catalytic oxidation HCHO removal Supported Pt nanoparticles NiMoO4 nanoflakes Am

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 ponutants at low ambient temperature.