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层状镍铁水滑石活化过二硫酸盐降解亚甲基蓝的研究 被引量:1

The NiFe-layered double hydroxide(NiFe-LDH)activated perdisulfate(PDS)for the degradation of methylene blue(MB)
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摘要 以共沉淀法制备了层状镍铁水滑石(NiFe-LDH)催化剂,通过XRD、SEM、TEM及XPS进行表征。以NiFe-LDH为催化剂,在模拟日光条件下活化过二硫酸盐(PDS)降解阳离子染料亚甲基蓝(MB)。结果表明,NiFe-LDH活化PDS能有效降解MB,且当过二硫酸盐(PDS)投加量为0.5 g/L,NiFe-LDH投加量为1.0 g/L,反应时间为120 min时,亚甲基蓝MB(10 mg/L)降解率最高可达93.8%;初始pH对亚甲基蓝(MB)的降解影响较小;自由基猝灭实验表明,硫酸根自由基、羟基自由基、超氧自由基和光生电子空穴均为反应的活性物种。 The NiFe-layered double hydroxide(NiFe-LDH)catalyst was prepared by co-precipitation method and characterized by XRD,SEM,TEM and XPS.Under simulated sunlight conditions,perdisulfate(PDS)was activated to degrade cationic dye methylene blue(MB).The results show that NiFe-LDH activated PDS can effectively degrade MB.When the dosage of NiFe-LDH was 1.0 g/L,the concentration of PDS was 0.5 g/L and reaction time 120 min,the highest MB degradation rate can reach 93.8%.The initial pH has little effect on the degradation of methylene blue(MB).The free radical quenching experiment showed that sulfate radicals,hydroxyl radicals,superoxide radicals and photoelectron holes were all active species of the reaction.
作者 王丽娟 路井义 王汉铮 蔡俊 王莹 WANG Li-juan;LU Jing-yi;WANG Han-zheng;CAI Jun;WANG Ying(School of Civil Engineering and Transportation,Hebei University of Technology,Tianjin 300401,China)
出处 《应用化工》 CAS CSCD 北大核心 2021年第10期2756-2760,共5页 Applied Chemical Industry
基金 河北省教育厅重点基金资助项目(ZD2019126) 河北省专业学位教学案例库建设项目(KCJSZ2018015)。
关键词 层状镍铁水滑石 共沉淀法 过二硫酸盐 亚甲基蓝 硫酸根自由基 NiFe-layered double hydroxide(NiFe-LDH) co-precipitation method perdisulfate(PDS) methylene blue(MB) sulfate radicals
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