Octahedral Cu2O immobilized on carbonized wood as a self-supporting photocatalyst for boosting methyl orange degradation

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-02-28 DOI:10.1016/j.jtice.2025.106069

Qingtong Zhang , Xiaoxuan Zhang , Yuanyuan Yu , Chen Chen , Hewei Hou , Jierui Wei , Shuangfei Wang , Douyong Min

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Abstract

Background

Photocatalytic degradation is a sustainable method for environmental pollution treatment, but recycling powdered photocatalysts remains a challenge.

Method

In this work, we decorated Cu₂O onto the porous carbonized wood (Cu₂O/CW) which was used as a photocatalyst for the efficient photocatalytic degradation of Methyl orange. The designed Cu₂O/CW effectively overcomes the recycling challenges of powdered photocatalysts, exhibiting self-floating properties that enhance its light and oxygen exposure, thereby improving photocatalytic efficiency. After four cycles, the photocatalytic degradation efficiency of Cu₂O/CW decreased by only 3 %, while that of Cu₂O declined by 24 %.

Significant findings

The mechanism of photogenerated electron transfer facilitated by carbonized wood in Cu₂O/CW was revealed by free radical quenching experiments and transient photocurrent response. This study offers insights into addressing photocatalyst particle aggregation and deactivation, as well as the high-value utilization of woody raw materials.

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碳化木材固载Cu2O八面体自支撑光催化剂促进甲基橙降解

光催化降解是一种可持续的环境污染处理方法，但粉状光催化剂的回收利用仍然是一个挑战。方法在多孔碳化木材（Cu2O/CW）表面修饰Cu2O，作为光催化剂，对甲基橙进行高效光催化降解。设计的Cu2O/CW有效地克服了粉状光催化剂的回收挑战，表现出自漂浮特性，增强了其光暴露和氧暴露，从而提高了光催化效率。经过4个循环后，Cu2O/CW光催化降解效率仅下降3%，而Cu2O的光催化降解效率下降24%。通过自由基猝灭实验和瞬态光电流响应揭示了碳化木材在Cu2O/CW中促进光生电子转移的机理。该研究为解决光催化剂颗粒聚集和失活问题以及木本原料的高价值利用提供了见解。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.