One-pot hydrothermal synthesis of SrTiO3-reduced graphene oxide composites with enhanced photocatalytic activity for hydrogen production

He, Gang-Ling; Zhong, Yan-Hao; Chen, Mingjie; Li, Xin; Fang, Yueping; Xu, Yuehua

doi:10.1016/j.molcata.2016.05.025

Cited by 77 publications

(22 citation statements)

References 45 publications

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“…Moreover, Graphene has zero band gap, easy to be dispersed and its composite with other semiconducting materials results in inter-material charge transfer. In this regard, there are some recent trails of the fabrication of STO-graphene composites for various applications 32–34 . Those studies suggest that graphene would be a prominent candidate material to mix with undoped STO matrix.…”

Section: Introductionmentioning

confidence: 99%

Grain Boundary Interfaces Controlled by Reduced Graphene Oxide in Nonstoichiometric SrTiO3-δ Thermoelectrics

Rahman

Dư

Nam

et al. 2019

Sci Rep

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Point defect or doping in Strontium titanium oxide (STO) largely determines the thermoelectric (TE) properties. So far, insufficient knowledge exists on the impact of double Schottky barrier on the TE performance. Herein, we report a drastic effect of double Schottky barrier on the TE performance in undoped STO. It demonstrates that incorporation of Reduced Graphene Oxide (RGO) into undoped STO weakens the double Schottky barrier and thereby results in a simultaneous increase in both carrier concentration and mobility of undoped STO. The enhanced mobility exhibits single crystal-like behavior. This increase in the carrier concentration and mobility boosts the electrical conductivity and power factor of undoped STO, which is attributed to the reduction of the double Schottky barrier height and/or the band alignment of STO and RGO that allow the charge transfer through the interface at grain boundaries. Furthermore, this STO/RGO interface also enhances the phonon scattering, which results in low thermal conductivity. This strategy significantly increases the ratio of σ/κ, resulting in an enhancement in ZT as compared with pure undoped STO. This study opens a new window to optimize the TE properties of many candidate materials.

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Section: Introductionmentioning

confidence: 99%

Grain Boundary Interfaces Controlled by Reduced Graphene Oxide in Nonstoichiometric SrTiO3-δ Thermoelectrics

Rahman

Dư

Nam

et al. 2019

Sci Rep

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“…Materials based on strontium titanate can be found in a variety of applications, like sensors [1], catalysis [2], UV detectors [3], solar cell [4], multilayer ceramic capacitors (MLCCs) [5], etc. Strontium titanate powders are also well known photocatalysts for NO x degradation under UV light.…”

Section: Introductionmentioning

confidence: 99%

The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders

Živojinović

Pavlović

Kosanović

et al. 2017

Journal of Alloys and Compounds

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Structural changes caused by mechanical activation of SrTiO 3 powders were investigated using a variety of methods. Average crystallite size continuously decreased with increased activation time to around 20 nm after 120 min activation, while mesopore volume and specific surface area increased accordingly. Higher activation times lead to increased agglomeration of nanoparticles to form agglomerates of around 2 µm in size, ultimately

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“…In addition, ceria can also play the role of electron transport layer, which makes the transfer of a photogenerated electron from PANi to ceria easier. So that, ceria could inhibit electron-hole pairs of PANi from recombining, thus improving its photocatalytic efficiency [43,44,45,46]. Figs.…”

Section: Photocatalytic Degradation Of Mb Under Visible Light Illuminmentioning

confidence: 99%

Photocatalytic degradation of Methylene Blue using PANi/Ceria nanocomposite under visible light irradiation

Vidya¹,

Balamurugan²

2019

DWT

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In situ oxidative polymerization technique has been used to synthesize PANi (polyaniline) and PANi/Ceria nanocomposite. The structural, morphology, optical and thermal properties of the samples were characterized by FT-IR, XRD, FE-SEM, UV-visible and TGA studies. PANi and PANi/Ceria nanocomposite exhibited good morphology of nanofibers with an average length of about 200-250 nm and 50-100 nm respectively. The optical and thermal analyses confirm the interaction between PANi and ceria. The band gap of the samples was calculated using Tauc plot and, the band gap of PANi and PANi/Ceria nanocomposite were 2.98 and 2.7eV respectively. The surface area analysis shows that the PANi/Ceria nanocomposite has high surface area than pure PANi and it has 56% degradation ability of methylene blue dye within 150 min under visible light irradiation.

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One-pot hydrothermal synthesis of SrTiO3-reduced graphene oxide composites with enhanced photocatalytic activity for hydrogen production

Cited by 77 publications

References 45 publications

Grain Boundary Interfaces Controlled by Reduced Graphene Oxide in Nonstoichiometric SrTiO3-δ Thermoelectrics

Grain Boundary Interfaces Controlled by Reduced Graphene Oxide in Nonstoichiometric SrTiO3-δ Thermoelectrics

The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders

Photocatalytic degradation of Methylene Blue using PANi/Ceria nanocomposite under visible light irradiation

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