發(fā)布時(shí)間：2018-06-23 23:19

  本文選題：黃鐵礦 + 光化學(xué)降解�。� 參考：《環(huán)境科學(xué)》2017年09期

【摘要】：在可見光(λ420 nm)照射和中性條件(p H=6.8)下,采用天然黃鐵礦降解微囊藻毒素MC-LR,XRD和SEM檢測(cè)表明黃鐵礦為層狀結(jié)構(gòu),反應(yīng)前后黃鐵礦表面XPS的表征說明礦物表面存在著S缺陷和缺陷位點(diǎn)Fe(Ⅱ)到Fe(Ⅲ)的轉(zhuǎn)化過程.ESR檢測(cè)顯示黃鐵礦光化學(xué)反應(yīng)體系涉及·OH機(jī)制.HPLC和LC-MS結(jié)果顯示可見光照射能有效活化黃鐵礦降解MC-LR,反應(yīng)10 h時(shí)能完全降解MC-LR,20 h時(shí)對(duì)MC-LR礦化率達(dá)到約60%,據(jù)實(shí)驗(yàn)結(jié)果推測(cè)出黃鐵礦光化學(xué)氧化MC-LR的兩條反應(yīng)途徑.
[Abstract]:Under visible light (位 420 nm) irradiation and neutral condition (pH 6.8), the degradation of microcystins by natural pyrite was characterized by XRD and SEM. XPS characterization of pyrite surface before and after reaction showed that there were S-defects and the transformation process from Fe (鈪，

本文編號(hào)：2058866