The Multiple Effects of Precursors on the Properties of Polymeric Carbon Nitride
Polymeric graphitic carbon nitride (g-C3N4) materials were prepared by direct pyrolysis of thiourea, dicyandiamide, melamine, and urea under the same conditions, respectively. In order to investigate the effects of precursors on the intrinsic physicochemical properties of g-C3N4, a variety of charac...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2013/685038 |
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| author | Wendong Zhang Qin Zhang Fan Dong Zaiwang Zhao |
| author_facet | Wendong Zhang Qin Zhang Fan Dong Zaiwang Zhao |
| author_sort | Wendong Zhang |
| collection | DOAJ |
| description | Polymeric graphitic carbon nitride (g-C3N4) materials were prepared by direct pyrolysis of thiourea, dicyandiamide, melamine, and urea under the same conditions, respectively. In order to investigate the effects of precursors on the intrinsic physicochemical properties of g-C3N4, a variety of characterization tools were employed to analyze the samples. The photocatalytic activity of the samples was evaluated by the removal of NO in gas phase under visible light irradiation. The results showed that the as-prepared CN-T (from thiourea), CN-D (from dicyandiamide), CN-M (from melamine), and CN-U (from urea) exhibited significantly different morphologies and microstructures. The band gaps of CN-T, CN-D, CN-M, and CN-U were 2.51, 2.58, 2.56, and 2.88 eV, respectively. Both thermal stability and yield are in the following order: CN-M > CN-D > CN-T > CN-U. The photoactivity of CN-U (31.9%) is higher than that of CN-T (29.6%), CN-D (22.2%), and CN-M (26.8%). Considering the cost, toxicity, and yield of the precursors and the properties of g-C3N4, the best precursor for preparation of g-C3N4 was melamine. The present work could provide new insights into the selection of suitable precursor for g-C3N4 synthesis and in-depth understanding of the microstructure-dependent photocatalytic activity of g-C3N4. |
| format | Article |
| id | doaj-art-625897917ebc41688e27a5531f7611b5 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-625897917ebc41688e27a5531f7611b52025-02-03T05:58:41ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2013-01-01201310.1155/2013/685038685038The Multiple Effects of Precursors on the Properties of Polymeric Carbon NitrideWendong Zhang0Qin Zhang1Fan Dong2Zaiwang Zhao3College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, ChinaCollege of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, ChinaChongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environmental and Biological Engineering, Chongqing Technology and Business University, Chongqing 400067, ChinaChongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environmental and Biological Engineering, Chongqing Technology and Business University, Chongqing 400067, ChinaPolymeric graphitic carbon nitride (g-C3N4) materials were prepared by direct pyrolysis of thiourea, dicyandiamide, melamine, and urea under the same conditions, respectively. In order to investigate the effects of precursors on the intrinsic physicochemical properties of g-C3N4, a variety of characterization tools were employed to analyze the samples. The photocatalytic activity of the samples was evaluated by the removal of NO in gas phase under visible light irradiation. The results showed that the as-prepared CN-T (from thiourea), CN-D (from dicyandiamide), CN-M (from melamine), and CN-U (from urea) exhibited significantly different morphologies and microstructures. The band gaps of CN-T, CN-D, CN-M, and CN-U were 2.51, 2.58, 2.56, and 2.88 eV, respectively. Both thermal stability and yield are in the following order: CN-M > CN-D > CN-T > CN-U. The photoactivity of CN-U (31.9%) is higher than that of CN-T (29.6%), CN-D (22.2%), and CN-M (26.8%). Considering the cost, toxicity, and yield of the precursors and the properties of g-C3N4, the best precursor for preparation of g-C3N4 was melamine. The present work could provide new insights into the selection of suitable precursor for g-C3N4 synthesis and in-depth understanding of the microstructure-dependent photocatalytic activity of g-C3N4.http://dx.doi.org/10.1155/2013/685038 |
| spellingShingle | Wendong Zhang Qin Zhang Fan Dong Zaiwang Zhao The Multiple Effects of Precursors on the Properties of Polymeric Carbon Nitride International Journal of Photoenergy |
| title | The Multiple Effects of Precursors on the Properties of Polymeric Carbon Nitride |
| title_full | The Multiple Effects of Precursors on the Properties of Polymeric Carbon Nitride |
| title_fullStr | The Multiple Effects of Precursors on the Properties of Polymeric Carbon Nitride |
| title_full_unstemmed | The Multiple Effects of Precursors on the Properties of Polymeric Carbon Nitride |
| title_short | The Multiple Effects of Precursors on the Properties of Polymeric Carbon Nitride |
| title_sort | multiple effects of precursors on the properties of polymeric carbon nitride |
| url | http://dx.doi.org/10.1155/2013/685038 |
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