Open AccessSynthesis of titanium dioxide-silica-silver composites using a base catalyst as active antibacterial compound coated on the cotton fabric
Author(s) -
Shinta Lestari,
Nor Basid Adiwibawa Prasetya,
Ngadiwiyagadiwiyana,
Ismiyarto Ismiyarto,
Purbowatiningrum Ria Sarjono
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1217/1/012045
Subject(s) - titanium dioxide , materials science , composite number , catalysis , fourier transform infrared spectroscopy , antibacterial activity , photocatalysis , adsorption , titanium , coating , composite material , nuclear chemistry , chemical engineering , amorphous solid , agar , chemistry , bacteria , organic chemistry , metallurgy , biology , engineering , genetics
Titanium dioxide is a photocatalyst material that can inhibit the growth of microorganisms, bacteria, and viruses. Titanium dioxide can be modified into TiO 2 -SiO 2 -Ag composites to improve the ability to inhibit the growth of microorganisms due to increased adsorption capability and bactericidal properties. Composites of TiO 2 -SiO 2 -Ag were synthesized using tetraethylorthosilicate (TEOS) precursor in the presence of NH4OH base catalyst followed by the addition of TiCL and AgNO 3 precursors. Coating of composite material on the cotton fabric was carried out by eight times dying. The coated cotton fabric was tested for antibacterial ability using UV-vis spectrophotometry method and agar disc diffusion method. FTIR data showed a typical functional group of the materials composing the composite. Analysis of XRD and UV-DRS showed that the composite material was amorphous with a bandgap of 2.43 eV. Antibacterial test results showed that the TiO 2 -SiO 2 -Ag composite material was able to inhibit the growth of Escherichia coli gram-negative bacteria in liquid media and solid media by 83.76% and 99%, respectively.