研究报告

  • 文焱,齐晶瑶,李欣.O-NiCoP/Ni2P电催化还原2,4-二氯苯酚性能研究[J].环境科学学报,2021,41(10):3969-3975

  • O-NiCoP/Ni2P电催化还原2,4-二氯苯酚性能研究
  • Electrocatalytic reduction of 2,4-dichlorophenol by O-NiCoP/Ni2P
  • 基金项目:国家自然科学基金(No.51779065)
  • 作者
  • 单位
  • 文焱
  • 哈尔滨工业大学, 环境学院, 哈尔滨 150001
  • 齐晶瑶
  • 哈尔滨工业大学, 环境学院, 哈尔滨 150001
  • 李欣
  • 哈尔滨工业大学, 化工与化学学院, 哈尔滨 150001
  • 摘要:针对电催化还原工艺处理氯酚类有机废水受到限制等问题,制备了过渡金属O-NiCoP/Ni2P催化电极,并用于目标污染物2,4-二氯苯酚废水的电催化还原降解.同时,主要考察了2,4-二氯苯酚浓度、电流密度、电解质浓度、pH和温度等因素对O-NiCoP/Ni2P催化电极降解效能的影响.结果表明,在2,4-二氯苯酚初始浓度为10 mg·L-1,温度为25℃,溶液pH=7,Na2SO4电解质浓度为50 mmol·L-1,电流密度为10 mA·cm-2的条件下,O-NiCoP/Ni2P电极催化降解180 min,对2,4-二氯苯酚去除率可达到72.2%.同时,催化电极循环使用10次,2,4-二氯苯酚的去除效率保持在72.1%~72.7%,表明电极具有良好的稳定性和实际应用的潜在价值.
  • Abstract:In view of the limitation of the electrocatalytic reduction process in the treatment of chlorophenol organic wastewater, the transition metal O-NiCoP/Ni2P hybrid electrode is prepared to reduce and degrade the target pollutant 2,4-dichlorophenol. Experimental factors, including the 2,4-dichlorobenzene concentration, current density, electrolyte concentration, pH, and temperature, are investigated regarding their influence on the catalytic efficiency. The results show that the removal rate of 2,4-dichlorophenol by the O-NiCoP/Ni2P electrode reached 72.2% at 180 min under the condition of:initial 2,4-dichlorophenol concentration 10 mg·L-1, temperature 25℃, pH=7, electrolyte concentration 50 mmol·L-1, current density 10 mA·cm-2. Besides, the removal efficiency of 2,4-dichlorobenzene remained between 72.1% and 72.7% after the electrode was recycled for 10 times, indicating the overall stability and potential practical applicability of the O-NiCoP/Ni2P electrode.

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