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TiO2/BiVO4, a heterojuncted microfiber with enhanced photocatalytic performance for methylene blue under visible light irradiation
Ma Zhan-ying
Author NameAffiliationE-mail
Ma Zhan-ying Xian yang Normal University mazhanying@163.com 
Abstract:
Novel TiO2/BiVO4 microfiber heterojunctions were constructed using cotton as biomorphic templates. The as-synthesized samples were characterized by SEM, XRD, XPS, UV-DRS techniques and photocatalytic experiment. The morphology of the as-synthesized TiO2/BiVO4 composites was consisted of large quantity of microfiber structure with diameter from 2.5 to 5 μm. The presence of anatase TiO2 peak (101) at 25.4o indicated the existence of TiO2 in TiO2/BiVO4, and the crystal form of BiVO4 can be identified to the monoclinic scheelite type. The TiO2/BiVO4 samples with proper content (10.00 wt%) showed the highest photocatalytic degradation activity for MB degradation among all the samples under visible light, and 88.58% MB could be degraded within 150 min. Meanwhile, a possible photodegradation mechanism of MB in the presence of TiO2/BiVO4 microfibrous photocatalyst was proposed.
Key words:  TiO2/BiVO4, Microfiber, Visible-light-response, Photocatalysis
FundProject:
TiO2/BiVO4, a heterojuncted microfiber with enhanced photocatalytic performance for methylene blue under visible light irradiation
马占营
摘要:
Novel TiO2/BiVO4 microfiber heterojunctions were constructed using cotton as biomorphic templates. The as-synthesized samples were characterized by SEM, XRD, XPS, UV-DRS techniques and photocatalytic experiment. The morphology of the as-synthesized TiO2/BiVO4 composites was consisted of large quantity of microfiber structure with diameter from 2.5 to 5 μm. The presence of anatase TiO2 peak (101) at 25.4o indicated the existence of TiO2 in TiO2/BiVO4, and the crystal form of BiVO4 can be identified to the monoclinic scheelite type. The TiO2/BiVO4 samples with proper content (10.00 wt%) showed the highest photocatalytic degradation activity for MB degradation among all the samples under visible light, and 88.58% MB could be degraded within 150 min. Meanwhile, a possible photodegradation mechanism of MB in the presence of TiO2/BiVO4 microfibrous photocatalyst was proposed.
关键词:  TiO2/BiVO4, Microfiber, Visible-light-response, Photocatalysis
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