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An Efficient Photocatalyst Based on Black TiO 2 Nanoparticles and Porous Carbon with High Surface Area: Degradation of Antibiotics and Organic Pollutants in Water
Author(s) -
Fang Yu,
Li Yuanyuan,
Zhou Feng,
Gu Peiyang,
Liu Jiadi,
Chen Dongyun,
Li Najun,
Xu Qingfeng,
Lu Jianmei
Publication year - 2019
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201900103
Subject(s) - photocatalysis , x ray photoelectron spectroscopy , chemistry , chemical engineering , adsorption , scanning electron microscope , carbon black , calcination , raman spectroscopy , transmission electron microscopy , specific surface area , nanoparticle , nanocomposite , carbon fibers , nuclear chemistry , materials science , catalysis , organic chemistry , composite number , composite material , natural rubber , physics , optics , engineering
Abstract Porous carbon (PC) materials with high surface area can separate electron–hole pairs and adsorb organic pollutants more effectively. A series of nanocomposites were prepared by anchoring black TiO 2 nanoparticles (BTN) onto PC through a calcination process. Chemical and structural features of samples were examined by X‐ray photoelectron spectroscopy (XPS), Raman spectroscopy, powder X‐ray diffraction (P‐XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses. The resulting adsorption‐photocatalysis synergistic effect led to a dramatically improved photocurrent for BTN@PCs, thus indicating the high photocatalytic performance toward water‐soluble organic species. For instance, the degradation of tetracycline under visible light reached 90 %, which is higher than that for activated carbon doped onto BTN (57 %) without any additional agents. Moreover, the degradation of other antibiotics (such as oxytetracycline and ciprofloxacin) and methylene blue were also studied, thus showing that this system has the potential to be used for water treatment.