文献类型： 外文期刊

作者： Zhang, Jingtao ¹ ; Zhu, Mengzhen ¹ ; Liu, Shurui ¹ ; Zhai, Mengwan ¹ ; Yao, Jing ¹ ; Wang, Guanghui ² ; Li, Junyang ³ ; Perego, Patrizia ³ ; Sun, Xiaodong ⁴ ; Liu, Bingkun ² ;

作者机构： 1.Zhengzhou Univ Light Ind, Sch Food & Bioengn, Zhengzhou 450002, Peoples R China

2.Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, Zhengzhou 450002, Peoples R China

3.Univ Genoa, Dept Civil Chem & Environm Engn DICCA, Via Opera Pia 15, I-16145 Genoa, Italy

4.Hainan Acad Agr Sci, Inst Vegetables, Key Lab Vegetable Biol Hainan Prov, Haikou 571100, Hainan, Peoples R China

5.Luohe Weilong Biotechnol Co Ltd, Luohe 462000, Peoples R China

6.136 Kexue Rd, Zhengzhou, Henan, Peoples R China

关键词： PdO-ZnO nanocomposite; Photocatalysis; Antibacterial; Optical "memory"; Cytotoxicity test

期刊名称：JOURNAL OF WATER PROCESS ENGINEERING （ 影响因子：7.0； 五年影响因子：6.7 ）

ISSN： 2214-7144

年卷期： 2023 年 54 卷

页码：

收录情况： SCI

摘要： In this study, Pd-ZnO nanocomposite was synthesized via the facile solvothermal method. Then, PdO-ZnO was obtained by continuing calcination of the synthesized Pd-ZnO. X-ray Diffraction (XRD), Transmission Electron Microscope (TEM), and X-ray Photoelectron Spectroscopy (XPS) tests showed that Pd was converted to PdO in the process of calcination. The photocatalytic sterilization experiment showed that in the 3 % Pd-ZnO system, 2 x 107 CFU/mL of E. coli was completely killed within 3 h, while 3 % PdO-ZnO took 1.5 h. In electron spin resonance (ESR) tests on PdO-ZnO, The & BULL;OH and & BULL;O2- signals can be detected under light and within 20 min after the end of light. 1 x 105 CFU/mL of E. coli were killed within 1 h by the optical "memory" effect of PdO-ZnO. PdO-ZnO inactivates E. coli by disrupting the membrane structure of bacteria as demonstrated by scanning electron microscopy (SEM) test. PdO-ZnO is non-toxic and can be demonstrated through cytotoxicity experiments on HTT2.