Electrodeposited Ag nanoparticles on TiO2 nanorods for enhanced UV visible light photoreduction CO2 to CH4

Kong, Dan; Tan, Jeannie Z. Y.; Yang, Fei; Zeng, Jie-Liang; Zhang, Xiwen

doi:10.1016/j.apsusc.2013.04.010

Cited by 97 publications

(42 citation statements)

References 40 publications

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“…The 2.5% Ag/TiO 2 exhibited the best activity for photocatalytic reduction of CO 2 to methanol due to the SPR effects, which was 9.4 times higher than that of pure TiO 2 [167]. Furthermore, the CH 4 yield over plasmonic Ag NPs/TiO 2 nanorods was almost 5 times higher than that of undecorated TiO 2 nanorods in gas phase system, which was correlated with the SPR effect and structure of TiO 2 nanorods [168].…”

Section: Surface Plasmon Resonance (Spr) Effectmentioning

confidence: 57%

“…TiO 2 nanotubes [63,97,[186][187][188][189][190][191], nanofibers [192] and nanorods [168,169,193] exhibited a much better photocatalytic activity for CO 2 reduction than P25 or TiO 2 NPs. For instance, Fu et al [192] demonstrated that the TiO 2 nanofibers with a 2-h solvothermal treatment exhibited the highest activity for photocatalytic reduction of CO 2 to CH 4 , which was about 6 and 25 times higher than those of TiO 2 nanofibers without solvothermal treatment and P25, respectively, due to the enhanced CO 2 adsorption capacity and the improved charge separation.…”

Section: Nanostructured Photocatalystsmentioning

confidence: 99%

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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: 57%

Section: Nanostructured Photocatalystsmentioning

confidence: 99%

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

et al. 2014

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“…It is noteworthy that the photocatalytic performance shown in this study under visible light is significantly higher or comparable in comparison with the previously reported photocatalytic systems under visible light, even under UV-vis light (Table S2). 21,27,43,[62][63][64][65][66][67][68][69][70] However, due to the different experimental conditions (such as light intensity, illumination area, photocatalysts dosage) in these photocatalytic systems, the direct comparison is not appropriate. Therefore, we also compared our materials with some typical semiconductors or composites (including N-doped TiO 2 , Au/TiO 2 , C 3 N 4 , WO 3 , P25) measured in the same reactor system.…”

Section: Photocatalytic Reduction Of Co 2 Over Ordered Mesoporous Co-mentioning

confidence: 99%

In situ synthesis of ordered mesoporous Co-doped TiO₂ and its enhanced photocatalytic activity and selectivity for the reduction of CO₂

et al. 2015

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Ordered mesoporous cobalt-doped titanium dioxide was successfully synthesized by a multicomponent self-assembly process. The doped Co species change the construction of the conduction band and valence band of TiO 2 , leading to visible-light absorption for TiO 2 . The designed cobalt-doped titanium dioxide performs a higher visible light activity for the reduction of CO 2 among the common reported photocatalysts. In addition, the selectivity of the reduction products is improved by optimizing the energy-band configurations of cobalt-doped titanium dioxide through varying the molar ratio of Co/Ti. When the content of doped cobalt species increases to some extent, Co 3 O 4 /Co-doped TiO 2 nanocomposites with oxygen vacancies were obtained, which markedly improve the generated rate of CH 4 .

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“…Then, these electrons will interact with absorped oxygen to create ·O 2 . These ·O 2 make an oxidation creation with MB solution [11,12,14]. The influence of annealing temperature on the photocatalytic ability of Ag/TNTs is presented on Fig.…”

Section: The Photocatalytic Activity Of Ag/tntsmentioning

confidence: 99%

“…This color characterization of the sample indicates the appearance of Ag particles on the surface of TiO 2 ( Fig. 1) [6,7,11]. Morphologies of the product were indicated on TEM images as Fig.…”

Section: The Effect Of Photoreduction Time On the Formation Of Ag/tntsmentioning

confidence: 99%

THE FABRICATION OF Ag NANOPARTICLES LOADED TiO2 NANOTUBES BY PHOTOREDUCTION METHOD AND THEIR PHOTOCATALYTIC ACTIVITY

Pham¹

2018

JST

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In this paper, we survey the effect of the photoreduction (illumination) time and the annealing temperature on the formation of Ag nanoparticles supported on TiO 2 nanotubes (Ag/TNTs). The morphology, crystal structure and compositions were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDS), respectively. The results showed that Ag nanoparticles are supported on TNTs and the amount of Ag nanoparticles could be controlled. The morphology of TNTs can be changed by the photoreduction time and the annealing temperature.

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Electrodeposited Ag nanoparticles on TiO2 nanorods for enhanced UV visible light photoreduction CO2 to CH4

Cited by 97 publications

References 40 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

In situ synthesis of ordered mesoporous Co-doped TiO₂ and its enhanced photocatalytic activity and selectivity for the reduction of CO₂

THE FABRICATION OF Ag NANOPARTICLES LOADED TiO2 NANOTUBES BY PHOTOREDUCTION METHOD AND THEIR PHOTOCATALYTIC ACTIVITY

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Electrodeposited Ag nanoparticles on TiO2 nanorods for enhanced UV visible light photoreduction CO2 to CH4

Cited by 97 publications

References 40 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

In situ synthesis of ordered mesoporous Co-doped TiO2 and its enhanced photocatalytic activity and selectivity for the reduction of CO2

THE FABRICATION OF Ag NANOPARTICLES LOADED TiO2 NANOTUBES BY PHOTOREDUCTION METHOD AND THEIR PHOTOCATALYTIC ACTIVITY

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In situ synthesis of ordered mesoporous Co-doped TiO₂ and its enhanced photocatalytic activity and selectivity for the reduction of CO₂