首页|Flower-like tin oxide membranes with robust three-dimensional channels for efficient removal of iron ions from hydrogen peroxide

Flower-like tin oxide membranes with robust three-dimensional channels for efficient removal of iron ions from hydrogen peroxide

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Membrane technology has become the mainstream process for the production of electronic grade hydro-gen peroxide(H2O2).But due to the oxidation degradation of the organic membranes(e.g.polyamide)by the strong oxidative radicals(e.g.·OH)generated via the activation of H2O2 by iron ions(Fe3+),the short effective lifetime of membranes remains a challenge.Inorganic nano tin oxide(SnO2)has great potential for the removal of Fe3+in strongly oxidative H2O2 because of its ability to stabilize H2O2 and preferentially adsorb Fe3+.Herein,we have designed for the first time a flower-like robust SnO2 membrane on the cera-mic support by in situ template-free one-step hydrothermal method.The three-dimensional loose pore structure in the membrane built by interlacing SnO2 nanosheets endows the SnO2 membrane with a high specific surface area and abundant adsorption sites(—OH).Based on the coordination complexation and electrostatic attraction between the SnO2 surface and Fe3+,the membrane shows a high Fe3+removal effi-ciency(83％)and permeability(24 L·m-2·h-1·MPa-1)in H2O2.This study provides an innovative and sim-ple approach to designing robust SnO2 membranes for highly efficient removal of Fe3+in harsh environments,such as strong oxidation conditions.

Hydrogen peroxideSnO2 membraneAdsorptionHydrothermal

Risheng Shen、Shilong Li、Yuqing Sun、Yuan Bai、Jian Lu、Wenheng Jing

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State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing Tech University,Nanjing 210009,China

National Energy Group Science and Technology Research Institute Co.,Ltd.,Nanjing 210023,China

国家重点研发计划国家自然科学基金国家自然科学基金State Key Laboratory of Materials-Oriented Chemical EngineeringKey Research and Development Program of Jiangsu Provincial Department of Science and Technology

2021YFB38013032183800521921006SKL-MCE-22A03BE2022033-3

2024

10.1016/j.cjche.2023.08.002

中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDEI
影响因子：0.818
ISSN：1004-9541
年,卷(期)：2024.65(1)
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