Details

Autor(en) / Beteiligte

• Zhang, Yan
• Shi, Zhun
• Luo, Li
• Liu, Zixiao
• Macharia, Daniel K.
• Duoerkun, Gumila
• Shen, Chensi
• Liu, Jianshe
• Zhang, Lisha

Titel

Construction of titanium dioxide/cadmium sulfide heterojunction on carbon fibers as weavable photocatalyst for eliminating various contaminants

Ist Teil von

• Journal of colloid and interface science, 2020-03, Vol.561, p.307-317

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Carbon fiber bundles decorated with titanium dioxide/cadmium sulfide heterojunction can be weaved into photocatalyst cloth for eliminating various contaminants. [Display omitted] 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 (~410 and 520 nm). Furthermore, CFs/TiO2/CdS bundles can be weaved into macroscopical cloth (such as weight: 0.1 g, area: 4 × 4 cm2) which have considerable photocurrent density of 5.75 × 10−6 A/cm2. Under visible light irradiation (λ > 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.