Ag-doped Ti-RH-MCM-41 synthesis using rice husk silica and its antibacterial efficiency

2019 5th International Conference on Environment and Renewable Energy

生态环境科学;能源学

Rukleng, S.^1 ; Chamlaiand, A.^1 ; Srikongka, P.^1 ; Areerob, T.^1

tha, Phuket

83120, Phuket^1

关键词: Ag nanoparticle;    Anti-bacterial performance;    Antibacterial properties;    Characteristic peaks;    Diffraction peaks;    Escherichia coli (E. coli);    Rice husk silica;    Staphylococcus aureus;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/307/1/012011/pdf
DOI  :  10.1088/1755-1315/307/1/012011

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Ag-Ti-RH-MCM-41 samples were prepared via rice husk silica with in-situ (one-pot) and ex-situ (sequence) methods to improve the antibacterial property on RH-MCM-41 and Ti-RH-MCM-41. Thus, this work proposed to investigate the antibacterial property of these materials using gram-negative Escherichia coli (E. coli) and gram-positive Staphylococcus aureus (S. aureus) and compared with TiO2 (rutile), RH-MCM-41 and Ti-RH-MCM-41. The XRD represented MCM-41 showed the broad peak of 100 at 2 theta equal to 2.2° after adding Titanium and Silver on RH-MCM-41. The XRD spectrum represented Titanium and Silver showed the characteristic peaks of anatase TiO2 but Ag nanoparticles (AgNPs) diffraction peaks did not clearly present in Ag-Ti-RH-MCM-41 (in-situ). On the other hand, the XRD spectrum of Ag-Ti-RH-MCM-41 (ex-situ) presented the small peaks of AgNPs according to the formation of AgNPs during calcination. Antibacterial efficiency of samples was tested via inhibited zone test (clear zone). The Ag-Ti-RH-MCM-41 (in-situ) and Ag-Ti-RH-MCM-41 (ex-situ) exhibited the antibacterial against while RH-MCM-41 and Ti-RH-MCM-41 did not present the antibacterial performance. Thus, Ag-doped Ti-RH-MCM-41 can improve the antibacterial property on RH-MCM-41 and Ti-RH-MCM-41.