Scholarlink

<p>Solar photocatalysis offers a sustainable solution for chromium-laden wastewater remediation. Herein, we constructed a hierarchical CC/PANI/Fe(EDTA)<sub>x</sub> photocatalyst through in situ growth of one-dimensional PANI nanoarrays doped with Fe(EDTA)<sub>x</sub> on activated carbon cloth (CC) for the enhanced photocatalytic reduction of Cr(VI) based on the synergistic PANI/Fe(EDTA)<sub>x</sub> interactions. The experimental results indicated that the doping of Fe(EDTA)<sub>x</sub> onto the surface of CC/PANI facilitated directional charge migration and reduced the recombination efficiency of photogenerated carriers. In addition, EDTA and FeSO<sub>4</sub> concentrations significantly influenced activity, where optimal coordination minimized Fe leaching and maximized electron transfer. The optimized CC/PANI/Fe(EDTA)<sub>x</sub> sample (CPFeE-5) achieved exceptional photocatalytic performance with 98.65% Cr(VI) removal within 80&#xa0;min of visible light exposure. It was also suggested that lower pH (pH = 2) favored Cr(VI) reduction, yielding a rate constant 12.08 times and 21.15 times higher than at pH = 4 and pH = 6, respectively. Moreover, stability tests revealed an efficiency retention of 81.20% after five cycles, with straightforward separation achieved and structural integrity maintained, as evidenced by XRD and SEM analysis. All of these findings revealed that a stable supported photocatalyst platform through synergistic carrier engineering was established in this work, demonstrating practical potential for solar-driven wastewater detoxification.</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

Hierarchical CC/PANI/Fe(EDTA)x architectures: stable visible-light photocatalysts with synergistic carrier enhancement for sustainable Cr(VI) reduction

  • 期刊论文

  • 发表日期：

    2025年9月26日

查看全文
  • Fenghua Chen,
  • Xianghai Rao,
  • Qingtao Chen,
  • Xiaoyun Qin,
  • Jiong Li,
  • Zhiheng Li,
  • Binyan Zou,
  • Xiangdong Shi

摘要

Solar photocatalysis offers a sustainable solution for chromium-laden wastewater remediation. Herein, we constructed a hierarchical CC/PANI/Fe(EDTA)x photocatalyst through in situ growth of one-dimensional PANI nanoarrays doped with Fe(EDTA)x on activated carbon cloth (CC) for the enhanced photocatalytic reduction of Cr(VI) based on the synergistic PANI/Fe(EDTA)x interactions. The experimental results indicated that the doping of Fe(EDTA)x onto the surface of CC/PANI facilitated directional charge migration and reduced the recombination efficiency of photogenerated carriers. In addition, EDTA and FeSO4 concentrations significantly influenced activity, where optimal coordination minimized Fe leaching and maximized electron transfer. The optimized CC/PANI/Fe(EDTA)x sample (CPFeE-5) achieved exceptional photocatalytic performance with 98.65% Cr(VI) removal within 80 min of visible light exposure. It was also suggested that lower pH (pH = 2) favored Cr(VI) reduction, yielding a rate constant 12.08 times and 21.15 times higher than at pH = 4 and pH = 6, respectively. Moreover, stability tests revealed an efficiency retention of 81.20% after five cycles, with straightforward separation achieved and structural integrity maintained, as evidenced by XRD and SEM analysis. All of these findings revealed that a stable supported photocatalyst platform through synergistic carrier engineering was established in this work, demonstrating practical potential for solar-driven wastewater detoxification.