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Self-assembly synthesis of boron-doped graphitic carbon nitride hollow tubes for enhanced photocatalytic NOx removal under visible light
Wang, ZY (Wang, Zhenyu)[ 1,2 ]; Chen, MJ (Chen, Meijuan)[ 1 ]; Huang, Y (Huang, Yu)[ 2,3 ]; Shi, XJ (Shi, Xianjin)[ 2,3 ]; Zhang, YF (Zhang, Yufei)[ 2,3 ]; Huang, TT (Huang, Tingting)[ 2,3 ]; Cao, JJ (Cao, Junji)[ 1,2,3 ]; Ho, WK (Ho, Wingkei)[ 4 ]; Lee, SC (Lee, Shun Cheng)[ 5 ]
2018-10-30
Source PublicationApplied Catalysis B: Environmental
Volume239Pages:352-361
Subtype期刊论文
Abstract

Oriented transfer of electron-hole charge carriers is important during photocatalytic processes. In this study, one-dimensional (1D) tubular B-doped graphitic carbon nitride (g-C3N4) with an effective charge transfer and separation was designed. The doping sites, energy level structure, and photo-generated electron-hole pair separation were predicted using systematical density functional theory (DFT) simulations. The supramolecular precursor for tubular g-C3N4 synthesis, namely melamine·cyanuric acid (M·CA), was controllably synthesized from a single melamine source. Intermolecular hydrogen bonding led to the arrangement of supramolecular aggregate structures into a prismatic crystal architecture during the hydrothermal treatment. The morphology modulation of g-C3N4 from bulk to 1D tubular architecture was realized by calcining the prism-like precursor. B-doped tubular g-C3N4 exhibited a narrower band-gap, multiple reflections of incident light, and oriented transfer of electron-hole charge carriers, which led to a widened light-harvesting range and improved photo-induced electron-hole pair separation and transfer ability. These factors contributed to the photocatalytic activity enhancement towards gaseous NOx degradation under visible light. In this work, a valuable design-fabrication pattern for g-C3N4 modification and engineering via DFT simulations was designed. Moreover, a strategy was developed for the simultaneous foreign atom doping and architecture control of g-C3N4 via the self-assembly of supramolecular precursors.

KeywordDft Predictions 1d Tubular G-c3n4 B-doping Self-assembly Photocatalytic No Removal
DOI10.1016/j.apcatb.2018.08.030
Indexed BySCI
Language英语
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9563
Collection粉尘与环境研究室
Corresponding AuthorHuang, Y (Huang, Yu)[ 2,3 ]; Cao, JJ (Cao, Junji)[ 1,2,3 ]
Affiliation1.School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an, 710049, China;
2.Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China;
3.State Key Labof Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China;
4.Department of Science and Environmental Studies, The Hong Kong Institute of Education, Hong Kong, China;
5.Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
Recommended Citation
GB/T 7714
Wang, ZY ,Chen, MJ ,Huang, Y ,et al. Self-assembly synthesis of boron-doped graphitic carbon nitride hollow tubes for enhanced photocatalytic NOx removal under visible light[J]. Applied Catalysis B: Environmental,2018,239:352-361.
APA Wang, ZY .,Chen, MJ .,Huang, Y .,Shi, XJ .,Zhang, YF .,...&Lee, SC .(2018).Self-assembly synthesis of boron-doped graphitic carbon nitride hollow tubes for enhanced photocatalytic NOx removal under visible light.Applied Catalysis B: Environmental,239,352-361.
MLA Wang, ZY ,et al."Self-assembly synthesis of boron-doped graphitic carbon nitride hollow tubes for enhanced photocatalytic NOx removal under visible light".Applied Catalysis B: Environmental 239(2018):352-361.
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