化工新型材料

化工新型材料 ›› 2019, Vol. 47 ›› Issue (4) : 104-107.

新材料与新技术

N,α-Fe₂O₃共掺杂TiO₂纳米管阵列的制备及其光电催化还原CO₂性能研究

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Study on preparation of N,α-Fe₂O₃ co-doped TiO₂ NTs and their photocatalysis of CO₂ reduction

Wang Yuhang, Jiang Mengpei, Wu Hongjun

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摘要

采用二次氧化法制得二氧化钛(TiO₂)纳米管(NTs)阵列(TiO₂NTs),并采用氮(N)、铁(Fe)对其进行改性,制得N、氧化铁共掺杂TiO₂NTs阵列(N-Fe₂O₃N/TiO₂NTs),并对N-Fe₂O₃N/TiO₂NTs的化学组成、结构和催化性能进行测试。研究结果表明,在0.075mol/L浸渍浓度条件下制得的N-Fe₂O₃N/TiO₂NTs有最优的光吸收能力,其在500nm的最高吸光度1.5Abs;主要还原产物一氧化碳(CO)产率最高可达140×10^-6/(cm²·h),比纯TiO₂NTs的产率提高了约8倍,光电流效率达到87.45%。

Abstract

Titanium dioxide (TiO₂)nanotube (NTs) array (TiO₂NTs) was prepared by the secondary oxidation method,and modified by nitrogen (N) and iron (Fe) to prepare N-Fe₂O₃/TiO₂NTs array (N-Fe₂O₃/TiO₂NTs).The chemical composition,structure and catalytic performance of N-Fe₂O₃/TiO₂NTs were tested.The results showed that N-Fe₂O₃/TiO₂NTs had the optimal light absorption capacity under the condition of 0.075mol/L immersion concentration,and its maximum absorbance at 500nm was 1.5abs.The yield of carbon monoxide (CO),the main reduction product,was up to 140×10^-6/(cm²·h),about 8 times higher than that of pure TiO₂NTs,and the photocurrent efficiency reached 87.45%.

关键词

二氧化碳 / 改性 / 光吸收能力 / 一氧化碳 / 电流效率

Key words

carbon dioxide / modification / light absorption capacity / carbon monoxide / current efficiency

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N,α-Fe₂O₃共掺杂TiO₂纳米管阵列的制备及其光电催化还原CO₂性能研究[J]. 化工新型材料, 2019, 47(4): 104-107 DOI:

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