NDLI: Constructing graphite-like carbon nitride modified hierarchical yolk–shell TiO<sub>2</sub> spheres for water pollution treatment and hydrogen production

Content Provider	Royal Society of Chemistry (RSC)
Author	Xie, Jimin Qian, Kun Jiang, Zhifeng Wan, Weiming Zhu, Chengzhang
Copyright Year	2016
Abstract	Graphitic carbon nitride (g-C3N4) was hybridized by hierarchical yolk–shell TiO2 spheres via a solvothermal method by mixing the as-prepared g-C3N4 with the precursor of the TiO2 yolk–shell spheres in dimethylformamide (DMF). The introduction of DMF made the TiO2 yolk–shell spheres to be dispersed well on the surface of g-C3N4, thus improving the specific surface area of the materials. The g-C3N4 has a unique two-dimensional layered structure, which is favorable for hybridizing with TiO2. The sufficient contact interface between TiO2 and g-C3N4 could be beneficial to the separation of photogenerated charges. Multiple reflections of light within the interior cavities of titania microspheres with a yolk–shell structure can increase their light absorption. The photocatalytic experimental results indicated that the as-prepared composite TiO2/g-C3N4 (TCN) showed enhanced photocatalytic activities compared with pure TiO2 and g-C3N4. A suitable combination of g-C3N4 with TiO2 produced the highest photocatalytic activity. Moreover, the photocatalytic activity of TCN with a yolk–shell structure is higher than that of TiO2/g-C3N4 without a yolk–shell structure. Based on our experimental results, a possible photocatalytic mechanism with holes and superoxide radical species as the main active species in photocatalysis was proposed. The TCN photocatalysts prepared in this case, with high photocatalytic activity and high stability, were a promising candidate for possible practical application in industrial production.
Starting Page	1806
Ending Page	1818
Page Count	13
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	4
Issue Number	5
Journal	Journal of Materials Chemistry A
DOI	10.1039/c5ta09919f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	TCN Graphitic carbon nitride Nitride Dimethylformamide Specific surface area Superoxide Photocatalysis
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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