Preparation of Pt/TiO2 hollow nanofibers with highly visible light photocatalytic activity

Yang, Ziling; Lu, Jing; Ye, Weichun; Yu, Chushu; Chang, Yong-Kui

doi:10.1016/j.apsusc.2016.09.065

Cited by 73 publications

(33 citation statements)

References 54 publications

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“…PVP (or PVA) is generally used as a temporary carrier in the electrospinning process and is burned off after the membranes are formed. Various materials, such as MoS 2 , TiO 2 , and SiO 2 , can be made into inorganic nanofiber membranes (Ren et al 2018;Singh et al 2017;Yang et al 2017;Wang et al 2017c). To improve the degradation efficiency, additional particles (CoFe 2 O 4 , Pt, and MnO 2 ) were incorporated to impart hierarchical structure to the membrane surface.…”

Section: Nanofibers For Wastewater Treatmentmentioning

confidence: 99%

Nanofibers for Water and Wastewater Treatment: Recent Advances and Developments

Tijing

Yao

Ren

et al. 2018

Energy, Environment, and Sustainability

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Materials of nanofibrous morphology and structure are attractive for solving environmental problems including water-related issues. In recent years, increasing interest is geared on the use of specially designed electrospun nanofibers for water/wastewater treatment applications. The nanofibers can be used in the form of nonwoven structures, as stand-alone membranes, as support layer or as a surface modification layer that enables added functionality to a composite material. Continuous research has been carried out in optimizing the nanofiber membrane design and structure by manipulating material, process and surrounding parameters in the electrospinning process. This chapter highlights the recent advances and developments on the potential and application of electrospun nanofibers for water/ wastewater treatment. Comprehensive discussion is presented here on various designs and structures of nanofibers and their applications to water-related treatment and the future prospects of such materials.

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Section: Nanofibers For Wastewater Treatmentmentioning

confidence: 99%

Nanofibers for Water and Wastewater Treatment: Recent Advances and Developments

Tijing

Yao

Ren

et al. 2018

Energy, Environment, and Sustainability

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“…Different authors have reported that the TiO 2 band gap value decreases after Pt nanoparticles addition; it means that platinized titania systems exhibit photocatalytic activity in the visible range of the spectrum, where oxidized states of the metal seems to promote this visible response by photoexciting surface plasmons in the metal atom. This behavior promotes the formation of a Schottky junction between the TiO 2 and Pt nanoparticles, metal nanoparticles can act as sink for the electrons, thus leading to a higher separation efficiency of electron-hole pairs, which increased the photocatalytic efficiency [15,19].…”

Section: Methylene Blue Photodegradation Testsmentioning

confidence: 99%

Methylene blue degradation over M-TiO2 photocatalysts (M= Au or Pt) / Degradación de azul de metileno sobre fotocatalizadores M-TiO2 (M = Au o Pt)

Mesa¹,

Romero²,

Macías³

et al. 2017

Cienc. En Desarro.

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In this study it was evaluated the methylene blue degradation over TiO 2 modified by sulfation and Au or Pt addition. These materials were synthesized by photodeposition method and then were widely characterized by different techniques. In general, it was found that Au or Pt particles size distribution can be effectively controlled modifying the deposition time. It was also found that metal particle size and dye adsorption on TiO 2 surface, are important factors influencing the methylene blue degradation rate. The highest dye degradation was obtained on Au-S-TiO 2 photocatalyst prepared by using 120 min of deposition time; the highest effectiveness of this material in the methylene blue degradation can be mainly due to a combined effect between the presence of gold nanoparticles acting as a sink for the electrons photogenerated during the catalytic reaction and the better adsorption of the dye over the S-TiO 2 surface partially covered by gold particles with the largest sizes. Keywords: Methylene blue, photodegradation, sulfated TiO 2 , M-TiO 2 , photocatalysts. ResumenEn este estudio se evaluó la degradación de azul de metileno sobre TiO 2 modificado por sulfatación y adición de Au o Pt. Estos materiales fueron sintetizados a través del método de fotodeposición y caracterizados usando diferentes técnicas. En general, se encontró que la distribución de tamaño de partícula de Au o Pt se puede controlar efectivamente modificando el tiempo de fotodeposición. Se encontró también que factores como el tamaño de partícula metálica y la adsorción del colorante sobre la superficie del TiO 2 influencian de manera importante la velocidad de degradación del azul de metileno. La mayor degradación del colorante se obtuvo usando el fotocatalizador Au-S-TiO 2 preparado con un tiempo de deposición de 120 min; la alta efectividad de este material en la degradación del azul de metileno se debe principalmente a un efecto combinado entre la presencia de partículas de oro que actúan como colectores de los electrones fotogenerados durante la reacción catalítica y a la mejor adsorción del colorante sobre la superficie del S-TiO

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“…However, little work has been devoted to fabrication of noble metal loaded TiO 2 mesoporous nanobers, remaining a signicant challenge. [42][43][44][45] The present study employed the electrospinning technique combined with other proposed process to prepare Ag@TiO 2 mesoporous nanobers. As inspired by previous work, 46 diisopropyl azodiformate (DIPA) was added to the initial spinning solutions and homogeneous boxed throughout the precursor (tetrabutyl titanate (TBOT) and polyvinylpyrrolidone (PVP)) to create a porous structure.…”

Section: -21mentioning

confidence: 99%

Mesoporous Ag@TiO₂ nanofibers and their photocatalytic activity for hydrogen evolution

et al. 2017

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Photocatalytic hydrogen evolution is a promising solution to energy and environmental problems. The grand challenge for its application is how to make photocatalysts with satisfactory efficiency. In the present work, exploration of Ag@TiO 2 mesoporous nanofibers via two strategies is reported, namely in situ electrospinning preparation (strategy I) and electrospinning combined with subsequent photodeposition (strategy II). The photocatalytic behavior of the as-synthesized Ag@TiO 2 hybrid nanofibers was evaluated in terms of hydrogen evolution efficiency for the photodecomposition of water under Xe lamp irradiation. It was found that incorporation of Ag nanoparticles into the TiO 2 mesoporous nanofibers could enhance remarkably their photocatalytic efficiency. The products prepared through strategy I exhibited the highest photocatalytic performance as compared with those prepared by strategy II. Current work might give some insight into exploration of stable binary photocatalysts, which have potential applications for efficient hydrogen evolution.

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Preparation of Pt/TiO2 hollow nanofibers with highly visible light photocatalytic activity

Cited by 73 publications

References 54 publications

Nanofibers for Water and Wastewater Treatment: Recent Advances and Developments

Nanofibers for Water and Wastewater Treatment: Recent Advances and Developments

Methylene blue degradation over M-TiO2 photocatalysts (M= Au or Pt) / Degradación de azul de metileno sobre fotocatalizadores M-TiO2 (M = Au o Pt)

Mesoporous Ag@TiO₂ nanofibers and their photocatalytic activity for hydrogen evolution

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Preparation of Pt/TiO2 hollow nanofibers with highly visible light photocatalytic activity

Cited by 73 publications

References 54 publications

Nanofibers for Water and Wastewater Treatment: Recent Advances and Developments

Nanofibers for Water and Wastewater Treatment: Recent Advances and Developments

Methylene blue degradation over M-TiO2 photocatalysts (M= Au or Pt) / Degradación de azul de metileno sobre fotocatalizadores M-TiO2 (M = Au o Pt)

Mesoporous Ag@TiO2 nanofibers and their photocatalytic activity for hydrogen evolution

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Mesoporous Ag@TiO₂ nanofibers and their photocatalytic activity for hydrogen evolution