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在Pd@MXene电极上进行原子介导的增强电催化化
Lan-Ying Liu1, Guo-Shuai Liu1, Shi-Ming Niu1
1Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, PR China.
一个新的Pd@MXene催化剂通过电催化水解化,有效降解化有机污染物. 这种增强的催化剂对狄克洛芬雅克和其他污染物表现出优越的活性和稳定性.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 新兴的化有机污染物 (HOP) 构成环境风险.
- 需要有效的降解方法来去除这些持久性污染物.
- (Pd) 催化剂表现有希望,但需要提高性能.
研究的目的:
- 合成一个Pd@MXene催化剂,用于增强HOPS的电催化水解化 (ECH).
- 为了提高的分散性,催化活性和稳定性.
- 调查狄克洛芬亚克 (DCF) 和其他HOP的ECH性能.
主要方法:
- 合成Pd@MXene催化剂与受控的Pd纳米颗粒大小.
- 使用Pd@MX/CC电极的电催化水解化实验.
- 狄克洛芬加和其他化有机污染物的降解.
- 密度函数理论 (DFT) 计算以了解反应机制.
主要成果:
- Pd@MXene催化剂具有较小的Pd纳米粒子 (3.62 ± 0.34 nm) 和增强的Pd (111) 峰值.
- 与Pd@MX/CC.电极相比,DCF降解的反应速率常数是Pd@MX/CC.电极的2.48倍.
- 在广泛的DCF度范围内 (5-100 mg/L) 保持一致的ECH性能,在10个批次中保持高稳定性.
- 其他HOP的有效ECH包括levofloxacin,tetrabromobisphenol A和diatrizoate.
- DFT计算证实了优化的结合能,有助于提高ECH效率.
结论:
- Pd@MXene催化剂显著提高了新出现的化有机污染物的电催化水解化效率.
- 催化剂表现出卓越的活性,稳定性和广泛适用于各种污染物.
- 优化Pd@MXene的电子配置是提高催化性能的关键.
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