Facile fabrication of novel SiO                         2                         /g-C                         3                         N                         4                          core-shell nanosphere photocatalysts with enhanced visible light activity

Bo Lin; Chao Xue; Xiaoqing Yan; Guidong Yang; Guang Yang; Bolun Yang

doi:10.1016/j.apsusc.2015.09.041

Facile fabrication of novel SiO ₂ /g-C ₃ N ₄ core-shell nanosphere photocatalysts with enhanced visible light activity

Bo Lin
, Chao Xue
, Xiaoqing Yan
, Guidong Yang
, Guang Yang
, Bolun Yang

化学工程与技术学院

Xi'an Jiaotong University

科研成果: 期刊稿件 › 文章 › 同行评审

120 引用（Scopus）

摘要

Novel SiO ₂ /g-C ₃ N ₄ core-shell nanospheres were simply synthesized using heating method to anneal the mixture of silica dioxide nanospheres and molten cyanamide (CA) in nitrogen atmosphere. The effects of various initial mass ratios of SiO ₂ nanospheres and CA molecules on the catalyst structure, surface property and catalytic activity have been systematically investigated. The characterization results show that the as-obtained photocatalysts possess the ordered core-shell nanostructure, large mesoporous distribution and inflated BET specific surface areas. The photocatalytic activities of the SiO ₂ /g-C ₃ N ₄ composites were evaluated by decomposing the rhodamine B (RhB) dye under visible light irradiation. Compared with pure g-C ₃ N ₄ , all of the SiO ₂ /g-C ₃ N ₄ core-shell composites showed the improved photoactivity, and the optimal SiO ₂ /g-C ₃ N ₄ catalyst (SC-3) showed the highest activity with an RhB conversion of 94.3% after 150 min visible light irradiation, which is 3.5 times higher than that of pure g-C ₃ N ₄ . Meanwhile, the recycling test showed that the SC-3 sample owns outstanding stability and durability. The enhancement in both activity and stability can be assigned to the specific core-shell structure, inflated surface area, higher visible light adsorption and efficient charge separation originating from the closely contacted interfaces between SiO ₂ nanospheres and g-C ₃ N ₄ .

源语言	英语
页（从-至）	346-355
页数	10
期刊	Applied Surface Science
卷	357
DOI	https://doi.org/10.1016/j.apsusc.2015.09.041
出版状态	已出版 - 1 12月 2015

访问文件

10.1016/j.apsusc.2015.09.041

其它文件与链接

链接到 Scopus 的出版物

引用此

Lin, B., Xue, C., Yan, X., Yang, G., Yang, G., & Yang, B. (2015). Facile fabrication of novel SiO ₂ /g-C ₃ N ₄ core-shell nanosphere photocatalysts with enhanced visible light activity Applied Surface Science, 357, 346-355. https://doi.org/10.1016/j.apsusc.2015.09.041

Lin, Bo ; Xue, Chao ; Yan, Xiaoqing 等. / Facile fabrication of novel SiO ₂ /g-C ₃ N ₄ core-shell nanosphere photocatalysts with enhanced visible light activity 在: Applied Surface Science. 2015 ; 卷 357. 页码 346-355.

@article{6de0f0dad14642739d8977699027d5ff,

title = " Facile fabrication of novel SiO 2 /g-C 3 N 4 core-shell nanosphere photocatalysts with enhanced visible light activity ",

abstract = " Novel SiO 2 /g-C 3 N 4 core-shell nanospheres were simply synthesized using heating method to anneal the mixture of silica dioxide nanospheres and molten cyanamide (CA) in nitrogen atmosphere. The effects of various initial mass ratios of SiO 2 nanospheres and CA molecules on the catalyst structure, surface property and catalytic activity have been systematically investigated. The characterization results show that the as-obtained photocatalysts possess the ordered core-shell nanostructure, large mesoporous distribution and inflated BET specific surface areas. The photocatalytic activities of the SiO 2 /g-C 3 N 4 composites were evaluated by decomposing the rhodamine B (RhB) dye under visible light irradiation. Compared with pure g-C 3 N 4 , all of the SiO 2 /g-C 3 N 4 core-shell composites showed the improved photoactivity, and the optimal SiO 2 /g-C 3 N 4 catalyst (SC-3) showed the highest activity with an RhB conversion of 94.3\% after 150 min visible light irradiation, which is 3.5 times higher than that of pure g-C 3 N 4 . Meanwhile, the recycling test showed that the SC-3 sample owns outstanding stability and durability. The enhancement in both activity and stability can be assigned to the specific core-shell structure, inflated surface area, higher visible light adsorption and efficient charge separation originating from the closely contacted interfaces between SiO 2 nanospheres and g-C 3 N 4 .",

keywords = "Core-shell structure, Photocatalysis, SiO nanosphere, Visible light, g-C N",

author = "Bo Lin and Chao Xue and Xiaoqing Yan and Guidong Yang and Guang Yang and Bolun Yang",

year = "2015",

month = dec,

day = "1",

doi = "10.1016/j.apsusc.2015.09.041",

language = "英语",

volume = "357",

pages = "346--355",

journal = "Applied Surface Science",

issn = "0169-4332",

publisher = "Elsevier B.V.",

}

Lin, B, Xue, C, Yan, X, Yang, G, Yang, G & Yang, B 2015, ' Facile fabrication of novel SiO ₂ /g-C ₃ N ₄ core-shell nanosphere photocatalysts with enhanced visible light activity ', Applied Surface Science, 卷 357, 页码 346-355. https://doi.org/10.1016/j.apsusc.2015.09.041

Facile fabrication of novel SiO ₂ /g-C ₃ N ₄ core-shell nanosphere photocatalysts with enhanced visible light activity . / Lin, Bo; Xue, Chao; Yan, Xiaoqing 等.
在: Applied Surface Science, 卷 357, 01.12.2015, 页码 346-355.

科研成果: 期刊稿件 › 文章 › 同行评审

TY - JOUR

T1 - Facile fabrication of novel SiO 2 /g-C 3 N 4 core-shell nanosphere photocatalysts with enhanced visible light activity

AU - Lin, Bo

AU - Xue, Chao

AU - Yan, Xiaoqing

AU - Yang, Guidong

AU - Yang, Guang

AU - Yang, Bolun

PY - 2015/12/1

Y1 - 2015/12/1

N2 - Novel SiO 2 /g-C 3 N 4 core-shell nanospheres were simply synthesized using heating method to anneal the mixture of silica dioxide nanospheres and molten cyanamide (CA) in nitrogen atmosphere. The effects of various initial mass ratios of SiO 2 nanospheres and CA molecules on the catalyst structure, surface property and catalytic activity have been systematically investigated. The characterization results show that the as-obtained photocatalysts possess the ordered core-shell nanostructure, large mesoporous distribution and inflated BET specific surface areas. The photocatalytic activities of the SiO 2 /g-C 3 N 4 composites were evaluated by decomposing the rhodamine B (RhB) dye under visible light irradiation. Compared with pure g-C 3 N 4 , all of the SiO 2 /g-C 3 N 4 core-shell composites showed the improved photoactivity, and the optimal SiO 2 /g-C 3 N 4 catalyst (SC-3) showed the highest activity with an RhB conversion of 94.3% after 150 min visible light irradiation, which is 3.5 times higher than that of pure g-C 3 N 4 . Meanwhile, the recycling test showed that the SC-3 sample owns outstanding stability and durability. The enhancement in both activity and stability can be assigned to the specific core-shell structure, inflated surface area, higher visible light adsorption and efficient charge separation originating from the closely contacted interfaces between SiO 2 nanospheres and g-C 3 N 4 .

AB - Novel SiO 2 /g-C 3 N 4 core-shell nanospheres were simply synthesized using heating method to anneal the mixture of silica dioxide nanospheres and molten cyanamide (CA) in nitrogen atmosphere. The effects of various initial mass ratios of SiO 2 nanospheres and CA molecules on the catalyst structure, surface property and catalytic activity have been systematically investigated. The characterization results show that the as-obtained photocatalysts possess the ordered core-shell nanostructure, large mesoporous distribution and inflated BET specific surface areas. The photocatalytic activities of the SiO 2 /g-C 3 N 4 composites were evaluated by decomposing the rhodamine B (RhB) dye under visible light irradiation. Compared with pure g-C 3 N 4 , all of the SiO 2 /g-C 3 N 4 core-shell composites showed the improved photoactivity, and the optimal SiO 2 /g-C 3 N 4 catalyst (SC-3) showed the highest activity with an RhB conversion of 94.3% after 150 min visible light irradiation, which is 3.5 times higher than that of pure g-C 3 N 4 . Meanwhile, the recycling test showed that the SC-3 sample owns outstanding stability and durability. The enhancement in both activity and stability can be assigned to the specific core-shell structure, inflated surface area, higher visible light adsorption and efficient charge separation originating from the closely contacted interfaces between SiO 2 nanospheres and g-C 3 N 4 .

KW - Core-shell structure

KW - Photocatalysis

KW - SiO nanosphere

KW - Visible light

KW - g-C N

UR - https://www.scopus.com/pages/publications/84948762066

U2 - 10.1016/j.apsusc.2015.09.041

DO - 10.1016/j.apsusc.2015.09.041

M3 - 文章

AN - SCOPUS:84948762066

SN - 0169-4332

VL - 357

SP - 346

EP - 355

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Lin B, Xue C, Yan X, Yang G, Yang G, Yang B. Facile fabrication of novel SiO ₂ /g-C ₃ N ₄ core-shell nanosphere photocatalysts with enhanced visible light activity Applied Surface Science. 2015 12月 1;357:346-355. doi: 10.1016/j.apsusc.2015.09.041

Facile fabrication of novel SiO 2 /g-C 3 N 4 core-shell nanosphere photocatalysts with enhanced visible light activity

摘要

访问文件

其它文件与链接

学术指纹

引用此

Facile fabrication of novel SiO ₂ /g-C ₃ N ₄ core-shell nanosphere photocatalysts with enhanced visible light activity