Scholarlink

<p>Sunlight-driven catalysis has been recognized as a prospective strategy to achieve efficient wastewater purification, but its widespread adoption is hampered by persistent challenges, including unsatisfactory catalytic performance and difficult recovery of powdery catalysts. Addressing these limitations, we present a self-floating S-scheme Bi<sub>4</sub>O<sub>5</sub>Br<sub>2</sub>/C<sub>3</sub>N<sub>4</sub>/carbon fiber cloth (BiBr/CN/CC) heterojunction-a robust, recyclable photocatalyst engineered for safe and efficient degradation of aquaculture antibiotics. This hierarchical architecture features a conductive carbon fiber cloth (CC) core enveloped by Bi<sub>4</sub>O<sub>5</sub>Br<sub>2</sub>/C<sub>3</sub>N<sub>4</sub> (BiBr/CN) nanosheets, synergistically combining buoyancy, practical recoverability, and superior photocatalytic performance. The S-scheme configuration between Bi<sub>4</sub>O<sub>5</sub>Br<sub>2</sub> and C<sub>3</sub>N<sub>4</sub> directs photogenerated electrons from BiBr to CN via a robust internal electric field (IEF), preserving optimal redox capacities, contributing to abundant ROS generation for photoreactions. Accordingly, BiBr/CN/CC displays the exceptional photocatalytic activity for oxytetracycline (OTC) destruction, with an OTC destruction rate of (0.0120&#xa0;min<sup>‒1</sup>), significantly exceeding BiBr/CC (0.0085&#xa0;min<sup>‒1</sup>) and CN/CC (0.0051&#xa0;min<sup>‒1</sup>) by 0.4 and 1.4 times, respectively. More significantly, BiBr/CN/CC manifests excellent practicality due to its effortless recovery and operation, excellent robustness, and good environmental adaptability. Furthermore, the OTC decomposition process and intermediates’ eco-toxicity, along with the photocatalysis mechanism are thoroughly explored. This research underscores the significance of devising self-floating, recyclable and high-performance photocatalysts for water decontamination.</p> Graphical Abstract <p>A floatable macroscopic Bi<sub>4</sub>O<sub>5</sub>Br<sub>2</sub>/C<sub>3</sub>N<sub>4</sub>/carbon fiber cloth heterojunction was engineered to address the critical challenges of unsatisfactory catalytic performance and recyclability in photocatalytic water purification. This innovative architecture integrates Bi<sub>4</sub>O<sub>5</sub>Br<sub>2</sub> nanosheets and C<sub>3</sub>N<sub>4</sub> layers onto a carbon cloth, synergizing the advantages of a hierarchical structure, built-in buoyancy, and S-scheme charge transfer dynamics. This fabric manifests intriguing prospects for practical application, advancing the design of recyclable S-scheme heterojunctions for environmental remediation</p> <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Floatable S-scheme Bi4O5Br2/C3N4/Carbon Fiber Cloth with Robust Internal Electric Field for Efficient Photocatalytic Antibiotic Decontamination

  • 期刊论文

  • 发表日期：

    2025年9月9日

查看全文
  • Shijie Li,
  • Yiqian Zhao,
  • Xinlei Zhang,
  • Yanping Liu,
  • Tong Liu,
  • Wenyao Li,
  • Yanping Hou,
  • Wei Jiang,
  • Bin Zhang

摘要

Sunlight-driven catalysis has been recognized as a prospective strategy to achieve efficient wastewater purification, but its widespread adoption is hampered by persistent challenges, including unsatisfactory catalytic performance and difficult recovery of powdery catalysts. Addressing these limitations, we present a self-floating S-scheme Bi4O5Br2/C3N4/carbon fiber cloth (BiBr/CN/CC) heterojunction-a robust, recyclable photocatalyst engineered for safe and efficient degradation of aquaculture antibiotics. This hierarchical architecture features a conductive carbon fiber cloth (CC) core enveloped by Bi4O5Br2/C3N4 (BiBr/CN) nanosheets, synergistically combining buoyancy, practical recoverability, and superior photocatalytic performance. The S-scheme configuration between Bi4O5Br2 and C3N4 directs photogenerated electrons from BiBr to CN via a robust internal electric field (IEF), preserving optimal redox capacities, contributing to abundant ROS generation for photoreactions. Accordingly, BiBr/CN/CC displays the exceptional photocatalytic activity for oxytetracycline (OTC) destruction, with an OTC destruction rate of (0.0120 min‒1), significantly exceeding BiBr/CC (0.0085 min‒1) and CN/CC (0.0051 min‒1) by 0.4 and 1.4 times, respectively. More significantly, BiBr/CN/CC manifests excellent practicality due to its effortless recovery and operation, excellent robustness, and good environmental adaptability. Furthermore, the OTC decomposition process and intermediates’ eco-toxicity, along with the photocatalysis mechanism are thoroughly explored. This research underscores the significance of devising self-floating, recyclable and high-performance photocatalysts for water decontamination.

Graphical Abstract

A floatable macroscopic Bi4O5Br2/C3N4/carbon fiber cloth heterojunction was engineered to address the critical challenges of unsatisfactory catalytic performance and recyclability in photocatalytic water purification. This innovative architecture integrates Bi4O5Br2 nanosheets and C3N4 layers onto a carbon cloth, synergizing the advantages of a hierarchical structure, built-in buoyancy, and S-scheme charge transfer dynamics. This fabric manifests intriguing prospects for practical application, advancing the design of recyclable S-scheme heterojunctions for environmental remediation