| Eosin Y-sensitized graphitic carbon nitride fabricated by heating urea for visible light photocatalytic hydrogen evolution: the effect of the pyrolysis temperature of urea | |
| Department | OSSO国家重点实验室 |
Xu JY(徐俊英)1; Li YX(李越湘)1; Peng SQ(彭绍琴)1; Lu GX(吕功煊)2 ; Li SB(李树本)2; Li YX(李越湘)
| |
| The second department | erc国家工程研究中心 |
| 2013 | |
| Source Publication | Physical Chemistry Chemical Physics
 |
| ISSN | 1463-9076 |
| Volume | 15Issue:20Pages:7657-7665 |
| Abstract | Graphitic carbon nitride (g-C3N4) was prepared by pyrolysis of urea at different temperatures (450–650 ℃), and characterized by thermogravimetric and differential thermal analysis (TG-DTA), elemental analysis (C/H/N), X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (DRS), Brunauer–Emmett–Teller (BET) analysis, Fourier transform-infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and photoluminescence (PL) spectra. The samples prepared at low temperatures (450 and 500 ℃) are a mixture of g-C3N4 and impurities, whereas the samples prepared at high temperatures (550, 600 and 650 ℃) should be g-C3N4 (polymeric carbon nitride). The polymerization degree of g-C3N4 for the prepared samples increases to a maximum at 600 ℃ with increasing pyrolysis temperature and then decreases, whereas the defect concentration changes conversely, that is, g-C3N4 prepared at 600 ℃ has the lowest defect concentration. Using Eosin Y (EY) and the prepared sample as the sensitizer and the matrix, respectively, the photocatalytic activity for hydrogen evolution from aqueous triethanolamine solution was investigated. The g-C3N4 prepared at 600 ℃ exhibits the highest sensitization activity. Under optimum conditions (1.25 × 10_5 mol L_1 EY and 7.0 wt% Pt), the maximal apparent quantum yield of EY-sensitized g-C3N4 prepared at 600 ℃ for hydrogen evolution is 18.8%. The highest activity can be attributed to the pure composition, the higher dye adsorption amount and the lowest defect concentration. |
| Subject Area | 物理化学与绿色催化 |
| DOI | 10.1039/c3cp44687e |
| Funding Organization | the National Nature Science Foundation of China (21163012);the National Basic Research Program of China (2009CB220003) |
| Indexed By | SCI |
| If | 4.198 |
| Language | 英语 |
| Funding Project | 环境催化与清洁能源研究组;环境催化与氢能源研究组 |
| compositor | 第二作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/4933 |
| Collection | 羰基合成与选择氧化国家重点实验室（OSSO） 精细石油化工中间体国家工程研究中心（ERC） |
| Corresponding Author | Li YX(李越湘) |
| Affiliation | 1.Nanchang Univ, Dept Chem, Nanchang 330031, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China |
| Recommended Citation GB/T 7714 | Xu JY,Li YX,Peng SQ,et al. Eosin Y-sensitized graphitic carbon nitride fabricated by heating urea for visible light photocatalytic hydrogen evolution: the effect of the pyrolysis temperature of urea[J]. Physical Chemistry Chemical Physics,2013,15(20):7657-7665. |
| APA | Xu JY,Li YX,Peng SQ,Lu GX,Li SB,&李越湘.(2013).Eosin Y-sensitized graphitic carbon nitride fabricated by heating urea for visible light photocatalytic hydrogen evolution: the effect of the pyrolysis temperature of urea.Physical Chemistry Chemical Physics,15(20),7657-7665. |
| MLA | Xu JY,et al."Eosin Y-sensitized graphitic carbon nitride fabricated by heating urea for visible light photocatalytic hydrogen evolution: the effect of the pyrolysis temperature of urea".Physical Chemistry Chemical Physics 15.20(2013):7657-7665. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2013,15(20),7657-766（2282KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment