Controlled deposition and enhanced visible light photocatalytic performance of Pt-modified TiO2 nanotube arrays

Lv, Jun; Gao, Huazhen; Wang, Honge; Lu, Xuejun; Xu, Guangqing; Wang, Dongmei; Chen, Zhong; Zhang, Xinyi; Zhang, Zheng; Wu, Yucheng

doi:10.1016/j.apsusc.2015.05.139

Cited by 56 publications

(17 citation statements)

References 31 publications

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“…These two major factors lead to low quantum yield of photocatalytic process and necessity to use of UV irradiation, which disables to apply them on an industrial scale. Many different strategies were proposed to solve these problems, such as transition metal cations doping [12,13], nonmetal doping [14][15][16], dye sensitization [17] and surface modification with noble metals and with low band gap semiconductors [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of nitrogen doped TiO2 nanotubes prepared by anodic oxidation: The effect of applied voltage, anodization time and amount of nitrogen dopant

Mazierski

Nischk

Gołkowska

et al. 2016

Applied Catalysis B: Environmental

115

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Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of nitrogen doped TiO2 nanotubes prepared by anodic oxidation: The effect of applied voltage, anodization time and amount of nitrogen dopant

Mazierski

Nischk

Gołkowska

et al. 2016

Applied Catalysis B: Environmental

115

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“…Synthesis routes such as sol–gel, hydrothermal, microwave hydrothermal, impregnation, electrochemical deposition, chemical deposition, deposition-precipitation, UV photodeposition and direct sunlight photodeposition have been reported [ 23 , 50 – 86 ]. The conventional and most frequently used methods are the sol–gel and deposition–precipitation methods.…”

Section: Reviewmentioning

confidence: 99%

Mechanistic insights into plasmonic photocatalysts in utilizing visible light

Leong¹,

Aziz²,

Sim³

et al. 2018

Beilstein J. Nanotechnol.

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The utilisation of sunlight as an abundant and renewable resource has motivated the development of sustainable photocatalysts that can collectively harvest visible light. However, the bottleneck in utilising the low energy photons has led to the discovery of plasmonic photocatalysts. The presence of noble metal on the plasmonic photocatalyst enables the harvesting of visible light through the unique characteristic features of the noble metal nanomaterials. Moreover, the formation of interfaces between noble metal particles and semiconductor materials further results in the formation of a Schottky junction. Thereby, the plasmonic characteristics have opened up a new direction in promoting an alternative path that can be of value to the society through sustainable development derived through energy available for all for diverse applications. We have comprehensively prepared this review to specifically focus on fundamental insights into plasmonic photocatalysts, various synthesis routes, together with their strengths and weaknesses, and the interaction of the plasmonic photocatalyst with pollutants as well as the role of active radical generation and identification. The review ends with a pinnacle insight into future perspectives regarding realistic applications of plasmonic photocatalysts.

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“…Advanced oxidation processes (AOPs) are presently attractive for such biorefactory wastewater treatment either as a pretreatment or mineralization process by generation of highly powerful oxidant of hydroxyl radical in situ [1]. Among the AOPs, photocatalytic degradation has emerged as a versatile technique for the removal of pollutants from water because of its desirable properties such as low cost, high efficiency, complete mineralization of various organic compounds, and no secondary pollution [2]. P-nitrophenol (PNP) is a nitro aromatic compound that poses a potential environmental hazard because of its acute toxicity, high carcinogenicity, low biodegradability and cumulative effect, and has been listed as a priority pollutant by the United States Environmental Protection Agency.…”

Section: Introductionmentioning

confidence: 99%

Investigation the effect of anodization voltage on the geometrical properties and photocatalytic activity of TiO2 nanotube arrays for degradation of p-nitrophenol

Janekbari¹,

Gilani²,

Pirbazari³

2019

Preprint

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p-nitrophenol (PNP) is a nitroaromatic compound that poses a potential environmental hazard because of its acute toxicity, high carcinogenicity, low biodegradability and cumulative effect. Titanium dioxide (TiO2) nanotubes have shown great potential as ideal and powerful photocatalysts in purification of polluted water due to their high photo oxidation, anti-fogging, nontoxicity, good chemical stability and low cost. Therefore, TiO2 nanotube arrays were fabricated by two-step anodization process at 30,40 and 50V; and were used in photocatalytic degradation of organic pollution p-nitrophenol. In order to have the crystal structure, nanotubes were annealed at 450 °C for 2 hours. Characterizing of TiO2 nanotubes were evaluated by FESEM, XRD and Spectrophotometry analyses. Effect of anodization voltage on nanotube’s length and diameter were investigated. The result showed that as anodization voltage increases from 30V to 50V, nanotube’s length, diameter and wall thickness increase linearly from 1.4 μm to 4.8 μm, 45 nm to 100nm and 15nm to 25 nm, respectively. Increasing in anodization voltage lead to enhancement in porosity (0.4-0.5) and roughness factor (109-194) of TiO2 nanotubes, respectively. By investigating kinetic of degradation of p-nitrophenol, it was observed that mechanism of photocatalytic degradation for all samples are followed first order kinetic. The results indicate that amongst all synthesized samples, 50 V sample with 38%, shows the most efficiency in degradation of p-nitrophenol under UV irradiation.

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Controlled deposition and enhanced visible light photocatalytic performance of Pt-modified TiO2 nanotube arrays

Cited by 56 publications

References 31 publications

Photocatalytic activity of nitrogen doped TiO2 nanotubes prepared by anodic oxidation: The effect of applied voltage, anodization time and amount of nitrogen dopant

Photocatalytic activity of nitrogen doped TiO2 nanotubes prepared by anodic oxidation: The effect of applied voltage, anodization time and amount of nitrogen dopant

Mechanistic insights into plasmonic photocatalysts in utilizing visible light

Investigation the effect of anodization voltage on the geometrical properties and photocatalytic activity of TiO2 nanotube arrays for degradation of p-nitrophenol

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