Open AccessPhotocatalytic Inhibition of Gram-positive and Gram-negative Bacteria by Nanoparticulate C-doped TiO2
Author(s) -
Xixi Chen,
Xiaoying Yan,
Ronghui Yuan,
Dakun Shan,
Jiamei Ji
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/943/1/012013
Subject(s) - photocatalysis , bacteria , gram positive bacteria , gram negative bacteria , nuclear chemistry , gram , materials science , chemistry , catalysis , organic chemistry , escherichia coli , biochemistry , biology , genetics , gene
C-doped TiO 2 (C-TiO 2 ) was synthesised using a solvothermal method with ethanol/TBT/LDPE medium. Microstructure and elemental composition of C-TiO 2 were analysed with TEM and XPS. An anti-bacterial device was utilized for photocatalytic inhibition of gram-positive and gram-negative bacteria. The device to measure bacteriostatic action was placed in a dark room, and the bacterial culture was placed in a holding cup which contained holding box and nanoparticulate C-TiO 2 . This approach was convenient for addition and removal of C-TiO 2 . Photocatalytic bacteriostasis by C-TiO 2 under visible-light irradiation was quantitively assessed for bacteriostatic properties. Moreover, the qualitative assessment of anti-bacterial activity with C-TiO 2 was less significant for gram-positive bacteria in comparison to gram-negative bacteria.