期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 561, 期 -, 页码 307-317出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2019.10.105
关键词
CFs/TiO2/CdS; Weave; Visible-light; Photocatalysis
资金
- National Key Research and Development Program of China [2016YFC0400501, 2016YFC0400502]
- National Natural Science Foundation of China [21477019]
- Fundamental Research Funds for the Central Universities
- DHU Distinguished Young Professor Program
Semiconductor heterojunction powders have exhibited the enhanced photocatalytic activities, but their practical applications have been limited due to their poor recycling performance from flowing wastewater. To solve these problems, with carbon fibers (CFs) as the fixing substrate, we constructed TiO2/CdS heterojunction as a model on CF surface by utilizing a hydrothermal-chemical bath deposition method. CFs/TiO2/CdS bundles display a wide photoabsorption with two photoabsorption edges (similar to 410 and 520 nm). Furthermore, CFs/TiO2/CdS bundles can be weaved into macroscopical cloth (such as weight: 0.1 g, area: 4 x 4 cm(2) ) which have considerable photocurrent density of 5.75 x 10(-6) A/cm(2 )Under visible light irradiation (lambda > 400 nm), macroscopic CFs/TiO2/CdS cloth can degrade 95.44% methylene blue (MB), 64.95% acid orange 7 (AO7), 91.37% tetracycline hydrochloride (TC) and remove 90.70% hexavalent chromium (Cr(VI)) after 120 min, higher than those by CFs/CdS (43.42% MB, 37.42% AO7, 31.76% TC and 30.45% Cr(VI)) or CFs/TiO2 (12.84% MB, 10.48% AO7, 11.85% TC and 15.58% Cr(VI)). Thus, CFs/TiO2/CdS can act as a weavable and efficient photocatalyst for eliminating various pollutants from wastewater. (C) 2019 Elsevier Inc. All rights reserved.
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