Calcium-doped bismuth oxybromide microspheres with enhanced photocatalytic degradation for ciprofloxacin under visible light

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of Physics and Chemistry of Solids Pub Date : 2025-06-14 DOI:10.1016/j.jpcs.2025.112934

Zhaoxia Wen, Yangang Sun, Yu Zhang, Luyao Pan, Song Yao

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Abstract

Rational design of efficient visible-light-responsive photocatalysts is pivotal for antibiotic degradation in aquatic environments. In this work, calcium-doped BiOBr (BOB) nanocomposites with controlled doping ratios were synthesized via a hydrothermal-calcination method and evaluated for ciprofloxacin (CIP) degradation under visible light. Experimental results demonstrate that the BiOBr/Ca-3 (BOB/Ca-3) sample exhibits a 1.64 times enhancement in CIP degradation efficiency compared to pristine BOB. Characterization data revealed that Ca doping optimizes the electronic and structural properties of BOB. Radical trapping experiments confirmed that •O₂⁻ and h⁺ serve as the dominant reactive species. Cycling tests demonstrated the structural stability and recyclability of BOB/Ca-3. This study demonstrates that Ca-doped BOB modification proves to be an effective strategy for developing high-performance photocatalysts toward antibiotic-contaminated wastewater remediation.

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可见光下增强环丙沙星光催化降解的掺钙氧化溴化铋微球

合理设计高效的可见光反应光催化剂是水生环境中抗生素降解的关键。本文采用水热煅烧法合成了掺杂比例可控的掺钙BiOBr （BOB）纳米复合材料，并对其在可见光下对环丙沙星（CIP）的降解性能进行了评价。实验结果表明，BiOBr/Ca-3 （BOB/Ca-3）样品的CIP降解效率比原始BOB提高了1.64倍。表征数据表明，Ca掺杂优化了BOB的电子和结构性能。自由基捕获实验证实，•O2−和h+是主要的反应种。循环试验证明了BOB/Ca-3的结构稳定性和可回收性。本研究表明，钙掺杂BOB修饰是开发用于抗生素污染废水修复的高性能光催化剂的有效策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Physics and Chemistry of Solids 工程技术-化学综合

CiteScore

7.80

自引率

2.50%

发文量

605

审稿时长

40 days

期刊介绍： The Journal of Physics and Chemistry of Solids is a well-established international medium for publication of archival research in condensed matter and materials sciences. Areas of interest broadly include experimental and theoretical research on electronic, magnetic, spectroscopic and structural properties as well as the statistical mechanics and thermodynamics of materials. The focus is on gaining physical and chemical insight into the properties and potential applications of condensed matter systems. Within the broad scope of the journal, beyond regular contributions, the editors have identified submissions in the following areas of physics and chemistry of solids to be of special current interest to the journal: Low-dimensional systems Exotic states of quantum electron matter including topological phases Energy conversion and storage Interfaces, nanoparticles and catalysts.