Layered g-C3N4/TiO2 nanocomposites for efficient photocatalytic water splitting and CO2 reduction: a review
Solar-driven photocatalysts for water splitting and CO2 reduction have been widely studied for dealing with environmental pollution and energy sustainability issues. Among the most promising semiconductor photocatalysts, graphitic carbon nitride (g-C3N4) and TiO2 (anatase) with band gaps of ∼2.7 and...
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| Format: | Journal Article |
| Language: | English |
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ELSEVIER SCI LTD
2022
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| Online Access: | http://purl.org/au-research/grants/arc/DP180100568 http://hdl.handle.net/20.500.11937/90809 |
| _version_ | 1848765434373865472 |
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| author | Zhang, Xiao Jiang, San Ping |
| author_facet | Zhang, Xiao Jiang, San Ping |
| author_sort | Zhang, Xiao |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Solar-driven photocatalysts for water splitting and CO2 reduction have been widely studied for dealing with environmental pollution and energy sustainability issues. Among the most promising semiconductor photocatalysts, graphitic carbon nitride (g-C3N4) and TiO2 (anatase) with band gaps of ∼2.7 and ∼3.2 eV, respectively, are investigated extensively. However, the high photogenerated carrier recombination efficiency of g-C3N4 and the relatively wide band gap of TiO2 (responsive to ultraviolet light only) are the factors that can lower the photocatalytic activities of the materials. Thus, one of the prevalent strategies is to construct g-C3N4/TiO2 nanocomposites to promote charge carrier separation and to improve photoabsorption in the visible region for attaining efficient utilization of solar energy in photocatalytic water splitting, CO2 reduction, and organic pollutant photodegradation. Here, a comprehensive overview is made on the exploitation of g-C3N4/TiO2 nanocomposites for photocatalytic applications, emphasizing layered heterostructures, for solar-driven H2 generation and CO2 reduction. Challenges in resolving various issues such as low efficiency, low stability, and noble metal cocatalyst dependency, as well as band gap narrowing accompanied reduction in redox ability of the g-C3N4/TiO2 nanocomposites, are discussed. |
| first_indexed | 2025-11-14T11:35:11Z |
| format | Journal Article |
| id | curtin-20.500.11937-90809 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:35:11Z |
| publishDate | 2022 |
| publisher | ELSEVIER SCI LTD |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-908092024-02-06T03:31:49Z Layered g-C3N4/TiO2 nanocomposites for efficient photocatalytic water splitting and CO2 reduction: a review Zhang, Xiao Jiang, San Ping Science & Technology Physical Sciences Technology Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Materials Science Graphitic carbon nitride/titanium oxide nanocomposites Photocatalysis and photocatalysts Carbon dioxide reduction H-2 generation GRAPHITIC CARBON NITRIDE ANATASE TIO2 NANOPARTICLES REDUCED GRAPHENE OXIDE IN-SITU SYNTHESIS HYDROGEN EVOLUTION POROUS G-C3N4 PHOTOELECTROCATALYTIC REDUCTION (G-C3N4)-BASED PHOTOCATALYSTS HETEROJUNCTION PHOTOCATALYSTS ENERGY-CONVERSION Solar-driven photocatalysts for water splitting and CO2 reduction have been widely studied for dealing with environmental pollution and energy sustainability issues. Among the most promising semiconductor photocatalysts, graphitic carbon nitride (g-C3N4) and TiO2 (anatase) with band gaps of ∼2.7 and ∼3.2 eV, respectively, are investigated extensively. However, the high photogenerated carrier recombination efficiency of g-C3N4 and the relatively wide band gap of TiO2 (responsive to ultraviolet light only) are the factors that can lower the photocatalytic activities of the materials. Thus, one of the prevalent strategies is to construct g-C3N4/TiO2 nanocomposites to promote charge carrier separation and to improve photoabsorption in the visible region for attaining efficient utilization of solar energy in photocatalytic water splitting, CO2 reduction, and organic pollutant photodegradation. Here, a comprehensive overview is made on the exploitation of g-C3N4/TiO2 nanocomposites for photocatalytic applications, emphasizing layered heterostructures, for solar-driven H2 generation and CO2 reduction. Challenges in resolving various issues such as low efficiency, low stability, and noble metal cocatalyst dependency, as well as band gap narrowing accompanied reduction in redox ability of the g-C3N4/TiO2 nanocomposites, are discussed. 2022 Journal Article http://hdl.handle.net/20.500.11937/90809 10.1016/j.mtener.2021.100904 English http://purl.org/au-research/grants/arc/DP180100568 http://purl.org/au-research/grants/arc/DP180100731 ELSEVIER SCI LTD restricted |
| spellingShingle | Science & Technology Physical Sciences Technology Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Materials Science Graphitic carbon nitride/titanium oxide nanocomposites Photocatalysis and photocatalysts Carbon dioxide reduction H-2 generation GRAPHITIC CARBON NITRIDE ANATASE TIO2 NANOPARTICLES REDUCED GRAPHENE OXIDE IN-SITU SYNTHESIS HYDROGEN EVOLUTION POROUS G-C3N4 PHOTOELECTROCATALYTIC REDUCTION (G-C3N4)-BASED PHOTOCATALYSTS HETEROJUNCTION PHOTOCATALYSTS ENERGY-CONVERSION Zhang, Xiao Jiang, San Ping Layered g-C3N4/TiO2 nanocomposites for efficient photocatalytic water splitting and CO2 reduction: a review |
| title | Layered g-C3N4/TiO2 nanocomposites for efficient photocatalytic water splitting and CO2 reduction: a review |
| title_full | Layered g-C3N4/TiO2 nanocomposites for efficient photocatalytic water splitting and CO2 reduction: a review |
| title_fullStr | Layered g-C3N4/TiO2 nanocomposites for efficient photocatalytic water splitting and CO2 reduction: a review |
| title_full_unstemmed | Layered g-C3N4/TiO2 nanocomposites for efficient photocatalytic water splitting and CO2 reduction: a review |
| title_short | Layered g-C3N4/TiO2 nanocomposites for efficient photocatalytic water splitting and CO2 reduction: a review |
| title_sort | layered g-c3n4/tio2 nanocomposites for efficient photocatalytic water splitting and co2 reduction: a review |
| topic | Science & Technology Physical Sciences Technology Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Materials Science Graphitic carbon nitride/titanium oxide nanocomposites Photocatalysis and photocatalysts Carbon dioxide reduction H-2 generation GRAPHITIC CARBON NITRIDE ANATASE TIO2 NANOPARTICLES REDUCED GRAPHENE OXIDE IN-SITU SYNTHESIS HYDROGEN EVOLUTION POROUS G-C3N4 PHOTOELECTROCATALYTIC REDUCTION (G-C3N4)-BASED PHOTOCATALYSTS HETEROJUNCTION PHOTOCATALYSTS ENERGY-CONVERSION |
| url | http://purl.org/au-research/grants/arc/DP180100568 http://purl.org/au-research/grants/arc/DP180100568 http://hdl.handle.net/20.500.11937/90809 |