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Nano flake Ag3PO4 enhanced photocatalytic activity of bisphenol A under visible light irradiation
Colloid and Interface Science Communications ( IF 4.7 ) Pub Date : 2020-06-05 , DOI: 10.1016/j.colcom.2020.100277
Yin Xu , Xiwang Zhang , Ying Zhang , Jiayi Zhu , Runliang Zhu

Bisphenol A (BPA) persistently exist in environment, bioaccumulative and toxic to wild life. The nano flake Ag3PO4 photocatalyst and its photocatalytic performance on BPA under visible light irradiation was investigated. The degradation rate constant of BPA by the nano flake Ag3PO4–2 was 9.71 times of that by the cube Ag3PO4. The radical of h+ and •O2 principally contributed in the BPA degradation. The powder XRD and TEM showed that the nano flake Ag3PO4–2 exposed (111) crystal surface, and displayed a flake structure with a length of about of 4–6 μm and wide of 0.05–0.1 μm. In addition, the band gap energy was 2.39 eV. The Photoluminescence (PL) intensity of the nano flake Ag3PO4–2 was lower than the cube Ag3PO4. The high photocatalyst activity might be attributed to extended light absorption and obviously accelerated carrier transfer, which are accounted by the increasing (111) crystal number and catalytic active sites.



中文翻译:

纳米片Ag 3 PO 4在可见光照射下增强了双酚A的光催化活性

双酚A(BPA)持续存在于环境中,具有生物蓄积性并且对野生生物有毒。研究了纳米薄片Ag 3 PO 4的光催化剂及其在可见光下对BPA的光催化性能。由纳米片状银BPA的降解速率常数3 PO 4 -2是那9.71倍由立方体的Ag 3 PO 4,该基团为h +和•Ø 2 -在BPA降解主要贡献。粉末XRD和TEM表明纳米薄片Ag 3 PO 4–2露出(111)晶体表面,并显示出片状结构,其长度约为4–6μm,宽度为0.05–0.1μm。另外,带隙能量为2.39eV。纳米薄片Ag 3 PO 4 -2的光致发光(PL)强度低于立方体Ag 3 PO 4。高的光催化剂活性可能归因于延长的光吸收和明显加速的载流子转移,这是由增加的(111)晶体数目和催化活性位点引起的。

更新日期:2020-06-05
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