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Conductive Black Titania Nanomaterials for Efficient Photocatalytic Degradation of Organic Pollutants
Bi, QY; Huang, XY; Dong, YC; Huang, FQ
2020-05-01
Source PublicationCATALYSIS LETTERS
ISSN1011-372X
Issue5Pages:1346
SubtypeArticle
AbstractTitanium dioxide (TiO2) as an important semiconductor is widely used in the fields of solar cell, solar thermal collectors, and photocatalysis, but the visible-light power harvest remains insufficient due to the little effective visible-light absorption and many carrier-recombination centers originating from the wide band gap structure. Herein, conductive black titania (BT) nanomaterials with crystalline-TiO2-core/amorphous-TiO2-x-shell structure prepared through two-zone Al-reduction route are found efficient in photocatalyzing the degradation of organic pollutants to environmentally friendly products under full solar and even visible light irradiation. The unique core-shell structure and numerous surface oxygen vacancies or Ti3+ species in the amorphous layer accompanying prominent physicochemical properties of narrow band gap, high carrier concentration, high electron mobility, and excellent separation and transportation of photoinduced e(-)-h(+) pairs result in exceptional photocatalytic efficiency. The optimized BT-500 (pristine TiO2 treated at 500 degrees C during two-zone Al-reduction process) catalyst achieves superior photocatalytic degradation rates for toluene and ethyl acetate as well as an excellent photostability with high degradation efficiency of 93% for the 6th reuse. Graphic
DOI10.1007/s10562-019-02941-1
WOS KeywordTIO2 NANOCRYSTALS ; SOLAR ABSORPTION ; RUTILE ; ANATASE ; CO2 ; PARAMETERS ; OXIDATION ; NANOSHEETS ; REDUCTION
Language英语
WOS Research AreaChemistry
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28099
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Bi, QY,Huang, XY,Dong, YC,et al. Conductive Black Titania Nanomaterials for Efficient Photocatalytic Degradation of Organic Pollutants[J]. CATALYSIS LETTERS,2020(5):1346.
APA Bi, QY,Huang, XY,Dong, YC,&Huang, FQ.(2020).Conductive Black Titania Nanomaterials for Efficient Photocatalytic Degradation of Organic Pollutants.CATALYSIS LETTERS(5),1346.
MLA Bi, QY,et al."Conductive Black Titania Nanomaterials for Efficient Photocatalytic Degradation of Organic Pollutants".CATALYSIS LETTERS .5(2020):1346.
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