双金属硫化物CoMoS_(4)活化过一硫酸盐降解双酚F  

Degradation of BPF by peroxymonosulfate activation with bimetallic sulfides CoMoS_(4)

作　　者：孙鹏佳 熊必涛[2] 孙萍[1] 王慧 方应森[1] 刘辉[1] SUN Pengjia;XIONG Bitao;SUN Ping;WANG Hui;FANG Yingsen;LIU Hui(College of Biological,Chemical Sciences and Engineering,Jiaxing University,Jiaxing 314001;College of Science,Zhejiang University of Science and Technology,Hangzhou 310023)

机构地区：[1]嘉兴学院,生物与化学工程学院,嘉兴314001 [2]浙江科技学院,理学院,杭州310023

出　　处：《环境科学学报》2023年第6期318-327,共10页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金(No.21607058);浙江省自然科学基金(No.LY21B070007,LY21B070008);浙江省教育厅科技计划项目(No.Y201840526);嘉兴市科技计划项目(No.2021AY10069,2021AD10008,2020AY10005)。

摘　　要：通过离子交换法合成了双金属硫化物CoMoS_(4)(CMS),通过活化过一硫酸盐(PMS)降解目标污染物双酚F(BPF)来考察其催化性能,并剖析了其中的反应机理.研究结果表明,CMS具有优异的催化性能,25℃时,50 mg·L^(-1)的CMS和0.5 mmol·L^(-1)的PMS体系在30 min内可以完全降解10 mg·L^(-1)的BPF;CMS抗干扰能力强,在降解过程中受水体中无机阴离子(Cl^(-)、NO_(3)^(-)、HCO_(3)^(-))和腐殖酸(HA)的影响小;CMS同时具有较好的稳定性,循环使用3次后BPF降解率仍可达60.2%.自由基淬灭实验和电子顺磁共振(EPR)实验证明,硫酸根自由基SO_(4)^(·-)是CMS/PMS体系降解BPF的主要活性氧物种(ROS);并通过液相色谱-质谱仪鉴定BPF降解过程的中间产物,提出了两条主要的降解路径.Ion exchange method was used to synthesis a bimetallic sulfides CoMoS_(4)(CMS),whose catalytic performances and reaction mechanisms were investigated via activating peroxymonosulfate(PMS)to degrade the targeted pollutant-bisphenol F(BPF).The results suggested that CMS has an excellent catalytic performance,as BPF with a concentration of 10 mg·L^(-1) was completely degraded within 30 minutes by a system of 50 mg·L^(-1) of CMS and 0.5 mmol·L^(-1) of PMS at 25℃.CMS has a good anti-interference capability,affected slightly by the humic acid(HA)and inorganic anions(Cl^(-),NO_(3)^(-),HCO_(3)^(-))in water bodies during the degradation process.The CMS also has a promising stability with a 60.2%removal rate of BPF after being recycled three times.Moreover,the electron paramagnetic resonance(EPR)experiment and free radical quenching experiment revealed that the sulfate radicals(SO_(4)^(•−))were the main reactive oxygen species(ROS)during the BPF degradation process in the CMS/PMS system.Two main degradation pathways were proposed based on identifying the intermediates of BPF during its degradation process using a liquid chromatography mass spectrometer.

关 键 词：双金属硫化物CoMoS_(4)(CMS) 高级氧化技术(AOPs) 过一硫酸盐(PMS) 双酚F(BPF) 硫酸根自由基(SO_(4)^(·-)) 

分 类 号：X703[环境科学与工程—环境工程]