Photoconversion of CO2 to methanol over plasmonic Ag/TiO2 nano-wire films enhanced by overlapped visible-light-harvesting nanostructures

Liu, Enzhou; Hu, Yang; Li, Hua; Tang, Chunni; Hu, Xiaoyun; Fan, Jun; Chen, Yihan; Bian, Juanjuan

doi:10.1016/j.ceramint.2014.09.027

Cited by 60 publications

(41 citation statements)

References 36 publications

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“…Thus, the plasmonic noble metal NPS can serve as an alternative type of sensitizer to enhance the visible-light absorption of photocatalysts due to SPR effects. In recent years, the interesting SPR effects have also been reported in the photoreduction of CO 2 under visible light irradiation [138,164,165]. For instance, Zhang et al [164] reported that the co-decoration of Au and Pt NPs with sizes of 5-12 nm on TiO 2 nanofibers could remarkably enhance their photocatalytic activity and selectivity for CO 2 reduction to CH 4 .…”

Section: Surface Plasmon Resonance (Spr) Effectmentioning

confidence: 97%

Design and fabrication of semiconductor photocatalyst for photocatalytic reduction of CO2 to solar fuel

et al. 2014

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The shortage of fossil fuels and the disastrous pollution of the environment have led to an increasing interest in artificial photosynthesis. The photocatalytic conversion of CO 2 into solar fuel is believed to be one of the best methods to overcome both the energy crisis and environmental problems. It is of significant importance to efficiently manage the surface reactions and the photo-generated charge carriers to maximize the activity and selectivity of semiconductor photocatalysts for photoconversion of CO 2 and H 2 O to solar fuel. To date, a variety of strategies have been developed to boost their photocatalytic activity and selectivity for CO 2 photoreduction. Based on the analysis of limited factors in improving the photocatalytic efficiency and selectivity, this review attempts to summarize these strategies and their corresponding design principles, including increased visible-light excitation, promoted charge transfer and separation, enhanced adsorption and activation of CO 2 , accelerated CO 2 reduction kinetics and suppressed undesirable reaction. Furthermore, we not only provide a summary of the recent progress in the rational design and fabrication of highly active and selective photocatalysts for the photoreduction of CO 2 , but also offer some fundamental insights into designing highly efficient photocatalysts for water splitting or pollutant degradation. INTRODUCTIONThe shortage of the energy supply and the problem of disastrous environmental pollution have been recognized as two main challenges in the near future [1]. It is a better way to efficiently and inexpensively convert solar energy into chemical fuels by developing an artificial photosynthetic (APS) system because solar fuels are high density energy carriers with long-term storage capacity. The most important and challenging reactions in APS-the photocatalytic water splitting into H 2 and O 2 (water reduction and oxidation) [2][3][4] and photoreduction of CO 2 to solar fuel, such as CH 4 and CH 3 OH [5,6] have been extensively studied since the photocatalytic water splitting on TiO 2 electrodes was discovered by Honda and Fujishima in 1972 [7]. The photocatalytic reduction of CO 2 by means of solar energy has attracted growing attention in the recent years, which 1 State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China 2 College of Science, South China Agricultural University, Guangzhou 510642, China 3 Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia * Corresponding author (email: jiaguoyu@yahoo.com) is also believed to be one of the best methods to overcome both global warming and energy crisis [8]. However, it is also generally thought that photocatalytic CO 2 reduction is a more complex and difficult process than H 2 production due to preferential H 2 production and low selectivity for the carbon species produced [9,10]. The progress achieved in the photoreduction of CO 2 is still far behind that in wate...

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Section: Surface Plasmon Resonance (Spr) Effectmentioning

confidence: 97%

Design and fabrication of semiconductor photocatalyst for photocatalytic reduction of CO2 to solar fuel

et al. 2014

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“…Other than Schottky barrier, loading of noble metals such as Ag [159], Cu and Au [160] on the TiO 2 can enhance visible light absorption via localized surface plasmonic resonance (SPR) effect. This phenomenon can occur either by collective oscillation of valence electrons in plasmonic nanostructures in resonance with electric field part of inbound radiation or metallic elements creating trap sites that propagates light within the semiconducting material [161].Morphology and size of the plasmonic nanostructures influences the SPR frequency and intensity as well as the resonant wavelength.…”

Section: Metal Semiconductor Modificationmentioning

confidence: 99%

Review of material design and reactor engineering on TiO2 photocatalysis for CO2 reduction

Ola

Maroto‐Valer

2015

Journal of Photochemistry and Photobiology C: Photochemistry Re

830

416

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Please cite this article as: Oluwafunmilola Ola, M.Mercedes Maroto-Valer, Review of material design and reactor engineering on TiO2 photocatalysis for CO2 reduction, Journal of Photochemistry and Photobiology C:Photochemistry Reviews http://dx. Graphical abstract HighlightsAlternative fuels can be produced from CO 2 reduction driven by light and catalysts. TiO 2 has been widely studied due to its desirable properties for CO 2 photoreduction.Physicochemical properties of TiO 2 have been modified by various routes.Performance can be improved by modification of both catalyst and reactor systems.Step change transformation is still required for scalable fuel production to occur. AbstractThe continuous combustion of non-renewable fossil fuels and depletion of existing resources are intensifying the research and development of alternative future energy options that can directly abate and process ever-increasing carbon dioxide (CO 2 ) emissions. Since CO 2 is a thermodynamically stable compound, its reduction must not consume additional energy or increase net CO 2 emissions. Renewable sources like solar energy provide readily available and continuous light supply required for driving this conversion process. Therefore, the use of solar energy to drive CO 2 photocatalytic reactions simultaneously addresses the aforementioned challenges, while producing sustainable fuels or chemicals suitable for use in existing energy infrastructure. Recent progress in this area has focused on the development and testing of promising TiO 2 based photocatalysts in different reactor configurations due to their unique physicochemical properties for CO 2 photoreduction. TiO 2 nanostructured materials with different morphological and textural properties modified by using organic and inorganic compounds as photosensitizers (dye sensitization), coupling semiconductors of different energy levels or doping with metals or non-metals have been tested. This review presents contemporary views on state of the art in photocatalytic CO 2 reduction over titanium oxide (TiO 2 ) nanostructured materials, with emphasis on material design and reactor configurations. In this review, we discuss existing and recent TiO 2 based supports, encompassing comparative analysis of existing systems, novel designs being employed to improve selectivity and photoconversion rates as well as emerging opportunities for future development, crucial to the field of CO 2 photocatalytic reduction. The influence of different operating and morphological variables on the selectivity and efficiency of CO 2 photoreduction is reviewed. Finally, perspectives on the progress of TiO 2 induced photocatalysis for CO 2 photoreduction will be presented.

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“…The possible reaction mechanims is illustrated in Eqs. (2)- (9) to provide insights about the reaction process [13]:…”

Section: Photocatalytic Mechanism Over the Au-nps/tio 2 Nwsmentioning

confidence: 99%

“…There are limited reports to demonstrate LSPR driven CO 2 reduction with H 2 as reductant using metal-nanoparticles-decorated titanium nanowires under visible light irradiations. Liu et al [13] reported photocatalytic CO 2 reduction with H 2 O to CH 3 OH over plasmonic Ag/TiO 2 nanorods under visible light irradiations. The higher TiO 2 NRs photoactivity for CO 2 reduction was observed due to Ag-NPs SPR effect.…”

Section: Introductionmentioning

confidence: 99%

Gold-nanoparticle-modified TiO2 nanowires for plasmon-enhanced photocatalytic CO2 reduction with H2 under visible light irradiation

Tahir

Amin

2015

Applied Surface Science

144

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Photoconversion of CO2 to methanol over plasmonic Ag/TiO2 nano-wire films enhanced by overlapped visible-light-harvesting nanostructures

Cited by 60 publications

References 36 publications

Design and fabrication of semiconductor photocatalyst for photocatalytic reduction of CO2 to solar fuel

Design and fabrication of semiconductor photocatalyst for photocatalytic reduction of CO2 to solar fuel

Review of material design and reactor engineering on TiO2 photocatalysis for CO2 reduction

Gold-nanoparticle-modified TiO2 nanowires for plasmon-enhanced photocatalytic CO2 reduction with H2 under visible light irradiation

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