Facile fabrication of acidified g-C3N4/g-C3N4 hybrids with enhanced photocatalysis performance under visible light irradiation | |
Department | OSSO国家重点实验室 |
Yang, Xiaolong1; Qian, Fangfang1; Zou GJ(邹国军)2; Li, Mengli3; Lu, Jinren1; Li, Yiming1; Bao, Mutai1 | |
2016 | |
Source Publication | Applied Catalysis B: Environmental |
ISSN | 0926-3373 |
Volume | 193Pages:22-35 |
Abstract | A highly efficient visible-light-driven acidified g-C3N4 (ACNS)/g-C3N4 isotype heterojunction photocatalysts were synthesized by ultrasonic dispersion assisted electrostatic self-assembly strategy for the first time. The photocatalytic oxidation ability of the novel photocatalysts were evaluated using methyl orange (MO) as a target pollutant. The obtained ACNS/g-C3N4 photocatalysts were characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectrometry (FTIR), UV–vis diffuse reflection spectroscopy (DRS), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) methods. The photocatalysts exhibited a significantly enhanced photocatalytic performance in degrading MO under visible light illumination (λ > 420 nm) compared with the pristine ACNS and g-C3N4 solely. The optimal ACNS content for the photocatalytic activity of the heterostructured composites was determined. The 30 wt.% ACNS/g-C3N4 exhibited the highest photocatalytic activity, which showed a reaction rate constant as high as 0.0216 min−1, 4.3 times higher than that of bare g-C3N4. The mechanism of the photocatalysts was investigated by determination of reactive species in the photocatalytic reactions and photoluminescence technique. The quenching effects of different scavengers displayed that the reactive h+ and O2− played major role in the reaction systems. The synergic effect between the ACNS and g-C3N4 was found to lead to an improved photo-generated carrier separation and hence the photocatalytic activities of the composite photocatalysts were increased significantly. |
Keyword | G-c3n4 Acidified G-c3n4 Composite Photocatalysts Visible-light-driven Photocatalysis Charge Separation And Transfer |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1016/j.apcatb.2016.03.060 |
Funding Organization | the National Natural Science Foundation of China (21403257;41376084);Postdoctoral Research Project of Qingdao, China (861605040004) |
Indexed By | SCI |
If | 9.446 |
Language | 英语 |
Funding Project | 多相选择氧化课题组 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/19974 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Bao, Mutai |
Affiliation | 1.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, 238 Song Ling Rd, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, 18 Tian Shui Rd, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Ding Xi Rd, Shanghai 200050, Peoples R China |
Recommended Citation GB/T 7714 | Yang, Xiaolong,Qian, Fangfang,Zou GJ,et al. Facile fabrication of acidified g-C3N4/g-C3N4 hybrids with enhanced photocatalysis performance under visible light irradiation[J]. Applied Catalysis B: Environmental,2016,193:22-35. |
APA | Yang, Xiaolong.,Qian, Fangfang.,Zou GJ.,Li, Mengli.,Lu, Jinren.,...&Bao, Mutai.(2016).Facile fabrication of acidified g-C3N4/g-C3N4 hybrids with enhanced photocatalysis performance under visible light irradiation.Applied Catalysis B: Environmental,193,22-35. |
MLA | Yang, Xiaolong,et al."Facile fabrication of acidified g-C3N4/g-C3N4 hybrids with enhanced photocatalysis performance under visible light irradiation".Applied Catalysis B: Environmental 193(2016):22-35. |
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