Growth of g-C3N4 on mesoporous TiO2 spheres with high photocatalytic activity under visible light irradiation

Xiaofang Chen, Jing Wei, Rujing Hou, Yan Liang, Zongli Xie, Yonggang Zhu, Xiwang Zhang, Huanting Wang

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Abstract

Growth of graphitic carbon nitride on mesoporous TiO2 spheres with well-controlled structures was achieved by melt-infiltrating dicyandiamide (DICY). The molten DICY diffused into the porous structure of TiO2 , and g-C3 N4 was produced inside the mesopores formed by packing of TiO2 nanoparticles at higher temperature, resulting in a better fused g-C3 N4 -TiO2 heterostructure. The formation of a strong interfacial connection between TiO2 and g-C3 N4 by this preparation method greatly improved the separation efficiency of photo-generated electrons and holes. TiO2 /g-C3 N4 composites exhibited much higher photo- catalytic activity than TiO2 and g-C3 N4 towards the degradation of Rhodamine B under both UV light and UV–vis light irradiation. The heterostructured combination provided a synergistic photocatalytic activity through an efficient electron transfer process. Based on the experimental results, a possible mechanism for the improved photocatalytic performance was proposed. The factors affecting the photocatalytic activ- ity were also discussed based on the result of structure analysis, optical and photoelectric characteristics, and photocatalytic reactions.
Original languageEnglish
Pages (from-to)342 - 350
Number of pages9
JournalApplied Catalysis B-Environmental
Volume188
DOIs
Publication statusPublished - 2016

Cite this

@article{72add7d1be564b74b7063ef8af6d3364,
title = "Growth of g-C3N4 on mesoporous TiO2 spheres with high photocatalytic activity under visible light irradiation",
abstract = "Growth of graphitic carbon nitride on mesoporous TiO2 spheres with well-controlled structures was achieved by melt-infiltrating dicyandiamide (DICY). The molten DICY diffused into the porous structure of TiO2 , and g-C3 N4 was produced inside the mesopores formed by packing of TiO2 nanoparticles at higher temperature, resulting in a better fused g-C3 N4 -TiO2 heterostructure. The formation of a strong interfacial connection between TiO2 and g-C3 N4 by this preparation method greatly improved the separation efficiency of photo-generated electrons and holes. TiO2 /g-C3 N4 composites exhibited much higher photo- catalytic activity than TiO2 and g-C3 N4 towards the degradation of Rhodamine B under both UV light and UV–vis light irradiation. The heterostructured combination provided a synergistic photocatalytic activity through an efficient electron transfer process. Based on the experimental results, a possible mechanism for the improved photocatalytic performance was proposed. The factors affecting the photocatalytic activ- ity were also discussed based on the result of structure analysis, optical and photoelectric characteristics, and photocatalytic reactions.",
author = "Xiaofang Chen and Jing Wei and Rujing Hou and Yan Liang and Zongli Xie and Yonggang Zhu and Xiwang Zhang and Huanting Wang",
year = "2016",
doi = "10.1016/j.apcatb.2016.02.012",
language = "English",
volume = "188",
pages = "342 -- 350",
journal = "Applied Catalysis B-Environmental",
issn = "0926-3373",
publisher = "Elsevier",

}

Growth of g-C3N4 on mesoporous TiO2 spheres with high photocatalytic activity under visible light irradiation. / Chen, Xiaofang; Wei, Jing; Hou, Rujing; Liang, Yan; Xie, Zongli; Zhu, Yonggang; Zhang, Xiwang; Wang, Huanting.

In: Applied Catalysis B-Environmental, Vol. 188, 2016, p. 342 - 350.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Growth of g-C3N4 on mesoporous TiO2 spheres with high photocatalytic activity under visible light irradiation

AU - Chen, Xiaofang

AU - Wei, Jing

AU - Hou, Rujing

AU - Liang, Yan

AU - Xie, Zongli

AU - Zhu, Yonggang

AU - Zhang, Xiwang

AU - Wang, Huanting

PY - 2016

Y1 - 2016

N2 - Growth of graphitic carbon nitride on mesoporous TiO2 spheres with well-controlled structures was achieved by melt-infiltrating dicyandiamide (DICY). The molten DICY diffused into the porous structure of TiO2 , and g-C3 N4 was produced inside the mesopores formed by packing of TiO2 nanoparticles at higher temperature, resulting in a better fused g-C3 N4 -TiO2 heterostructure. The formation of a strong interfacial connection between TiO2 and g-C3 N4 by this preparation method greatly improved the separation efficiency of photo-generated electrons and holes. TiO2 /g-C3 N4 composites exhibited much higher photo- catalytic activity than TiO2 and g-C3 N4 towards the degradation of Rhodamine B under both UV light and UV–vis light irradiation. The heterostructured combination provided a synergistic photocatalytic activity through an efficient electron transfer process. Based on the experimental results, a possible mechanism for the improved photocatalytic performance was proposed. The factors affecting the photocatalytic activ- ity were also discussed based on the result of structure analysis, optical and photoelectric characteristics, and photocatalytic reactions.

AB - Growth of graphitic carbon nitride on mesoporous TiO2 spheres with well-controlled structures was achieved by melt-infiltrating dicyandiamide (DICY). The molten DICY diffused into the porous structure of TiO2 , and g-C3 N4 was produced inside the mesopores formed by packing of TiO2 nanoparticles at higher temperature, resulting in a better fused g-C3 N4 -TiO2 heterostructure. The formation of a strong interfacial connection between TiO2 and g-C3 N4 by this preparation method greatly improved the separation efficiency of photo-generated electrons and holes. TiO2 /g-C3 N4 composites exhibited much higher photo- catalytic activity than TiO2 and g-C3 N4 towards the degradation of Rhodamine B under both UV light and UV–vis light irradiation. The heterostructured combination provided a synergistic photocatalytic activity through an efficient electron transfer process. Based on the experimental results, a possible mechanism for the improved photocatalytic performance was proposed. The factors affecting the photocatalytic activ- ity were also discussed based on the result of structure analysis, optical and photoelectric characteristics, and photocatalytic reactions.

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U2 - 10.1016/j.apcatb.2016.02.012

DO - 10.1016/j.apcatb.2016.02.012

M3 - Article

VL - 188

SP - 342

EP - 350

JO - Applied Catalysis B-Environmental

JF - Applied Catalysis B-Environmental

SN - 0926-3373

ER -