Photocatalytic water splitting on Au/TiO2 nanocomposites synthesized through various routes: Enhancement in photocatalytic activity due to SPR effect

Rayalu, Sadhana; Jose, D. Amilan; Joshi, Meenal; Mangrulkar, Priti A.; Shrestha, Khadga; Klabunde, Kenneth J.

doi:10.1016/j.apcatb.2013.05.057

Cited by 107 publications

(45 citation statements)

References 37 publications

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“…Higher activities through polydisperse Au NPs on TiO 2 were also observed by Rayalu et al [36] Furthermore, the group very recently extended the studies on MS-Au/TiO 2 for H 2 generation using 2-propanol and NH 3 as sacrificial electron donors [182]. Different effects, such as amount of deposited Au, number of photodeposition steps, post-calcination treatment, etc., on the photocatalytic performance were investigated.…”

Section: Water Splittingmentioning

confidence: 73%

“…Highest H 2 evolution rates were obtained in methanol/water mixtures with 1 wt% MS-Au/TiO 2 showing a 20Â higher rate compared to 1 wt% SS-Au/TiO 2 . The MS method results in a bimodal Au particle size distribution (1.4 and 13 nm), which is claimed to be one reason for the enhanced performance [36,178]. Larger Au NPs were responsible for stronger absorbance because of LSPR and hence higher activity, whereas smaller Au NPs were claimed as active cocatalysts for H 2 production.…”

Section: Water Splittingmentioning

confidence: 98%

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Surface Plasmon-Assisted Solar Energy Conversion

Dodekatos

Schünemann

Tüysüz

2015

Topics in Current Chemistry

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The utilization of localized surface plasmon resonance (LSPR) from plasmonic noble metals in combination with semiconductors promises great improvements for visible light-driven photocatalysis, in particular for energy conversion. This review summarizes the basic principles of plasmonic photocatalysis, giving a comprehensive overview about the proposed mechanisms for enhancing the performance of photocatalytically active semiconductors with plasmonic devices and their applications for surface plasmon-assisted solar energy conversion. The main focus is on gold and, to a lesser extent, silver nanoparticles in combination with titania as semiconductor and their usage as active plasmonic photocatalysts. Recent advances in water splitting, hydrogen generation with sacrificial organic compounds, and CO2 reduction to hydrocarbons for solar fuel production are highlighted. Finally, further improvements for plasmonic photocatalysts, regarding performance, stability, and economic feasibility, are discussed for surface plasmon-assisted solar energy conversion.

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Section: Water Splittingmentioning

confidence: 73%

Section: Water Splittingmentioning

confidence: 98%

Surface Plasmon-Assisted Solar Energy Conversion

Dodekatos

Schünemann

Tüysüz

2015

Topics in Current Chemistry

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“…After completion of reaction the reactor was brought to the room temperature under Ar atmosphere. On cooling Au solvent colloid comes in contact with TiO 2 , this mixture was stirred for 2 hrs in Ar atmosphere, recovered and vacuum dried [15].…”

Section: Preparation and Characterization Of Nanoparticlesmentioning

confidence: 99%

Solar Light Induced Photo Catalytic Disinfection of Gram Positive and Negative Microorganisms from Water with Highly Efficient AuTiO2 Nanoparticle

Bruno¹

2014

J Bioproces Biotech

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AuTiO 2 nanomaterial was used for solar photocatalytic disinfection of gram negative Escherichia coli and gram positive Staphylococci aureus. In this study, time of disinfection, light intensity, concentration of nanomaterial and bacterial concentration effects has been investigated. Prepared nanomaterial characterized using Scanning Electron Microscopy (SEM), X-Ray Diffractometry (XRD). AuTiO 2 samples have shown antibacterial effect when irradiated in solar light. The bactericidal effect may be due to Au ions and photocatalysis of TiO 2 . The photocatalytic inactivation rate constant, k for each dose were obtained from their respective inactivation curve over a 2 hours incubation period.

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“…However, its efficiency is partly limited by its incapacity to span the visible range of electromagnetic spectrum and its rapid electronhole recombination 8 . Among the many attempts made to reduce electron-hole recombination, metal doping plays a central role 9 .…”

Section: Introductionmentioning

confidence: 99%

Sol-Gel Synthesis of Fe2O3-Doped TiO2 for Optimized Photocatalytic Degradation of 2,4- Dichlorophenoxyacetic Acid

Razani¹,

Abdullah²,

Fitrianto³

et al. 2017

Orient. J. Chem

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Fe 2 O 3 _ doped and undoped TiO 2 catalysts were synthesized by sol-gel method and used to optimize the photocatalytic degradation of 2,4-Dichlorophenoxyacetic acid (2,4-D). The catalysts produced were dominated by the tetragonal, crystalline anatase TiO 2 cell structure. The 0.05wt% Fe 2 O 3 _ doped TiO 2 catalyst exhibited higher photocatalytic activity than that of undoped TiO 2 but its performance decline with increase Fe 2 O 3 content due to possible increase of recombination centers. Photocatalytic degradation of 2,4-DA was optimized by response surface methodology. The highest 2,4-DA degradation (48%) was obtained when 1.0 g of 0.05wt% Fe 2 O 3 _ doped TiO 2 is used to degrade 10 ppm of 2,4-DA at pH 4.

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Photocatalytic water splitting on Au/TiO2 nanocomposites synthesized through various routes: Enhancement in photocatalytic activity due to SPR effect

Cited by 107 publications

References 37 publications

Surface Plasmon-Assisted Solar Energy Conversion

Surface Plasmon-Assisted Solar Energy Conversion

Solar Light Induced Photo Catalytic Disinfection of Gram Positive and Negative Microorganisms from Water with Highly Efficient AuTiO2 Nanoparticle

Sol-Gel Synthesis of Fe2O3-Doped TiO2 for Optimized Photocatalytic Degradation of 2,4- Dichlorophenoxyacetic Acid

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