One-pot solvothermal synthesis of ZnTe/RGO nanocomposites and enhanced visible-light photocatalysis

Wang, Haixia; Wu, Rong; Wei, Shunhang; Yu, Lirui; Jian, Jikang; Hou, Juan; Wang, Jing; Zhang, Hong Yan; Sun, Yi

doi:10.1016/j.cclet.2016.03.003

Cited by 24 publications

(8 citation statements)

References 33 publications

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“…The pristine ZT exhibits a prominent emission centered around 418 nm, whose intensity significantly diminishes after loading GO sheets due to the existence of strong interfacial interaction in the composite material, which renders a dedicated pathway to the electrons and holes for establishing interaction between the ZT and GO layers. 32 The electrons thus could easily migrate from the excited ZT, and the “quenching” of fluorescence occurs. Such extended separation between the photo-generated charge carriers and their swift transportation essentially enhances the photocatalytic processes.…”

Section: Resultsmentioning

confidence: 99%

“…Figure shows the PL spectra of the as-synthesized ZT and R–ZT nanocomposite under 315 nm excitation. The pristine ZT exhibits a prominent emission centered around 418 nm, whose intensity significantly diminishes after loading GO sheets due to the existence of strong interfacial interaction in the composite material, which renders a dedicated pathway to the electrons and holes for establishing interaction between the ZT and GO layers . The electrons thus could easily migrate from the excited ZT, and the “quenching” of fluorescence occurs.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Higher Carrier Mobility of the Reduced Graphene Oxide–Zinc Telluride Nanocomposite on Efficient Charge Transfer Facility and the Photodecomposition of Rhodamine B

Das

Sil

et al. 2022

ACS Omega

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The synthesis of solar-light-responsive zinc telluride (ZnTe) nanoparticles and their composite with reduced graphene oxide (rGO–ZnTe) via a simple hydrothermal reaction is reported. The synthesized nanostructures were comprehensively characterized by a combination of X-ray diffraction and photoelectron spectroscopy, electron microscopy, UV–vis spectroscopy, photoluminescence spectroscopy and thermogravimetric analysis. The effects of graphene oxide on the crystallinity, microstructure, photo-excitation, light absorption, surface area and thermal stability of ZnTe were studied. The current–voltage ( I – V ) characteristics for both as-synthesized ZnTe and rGO–ZnTe composite-based Schottky devices were measured to estimate the charge transport parameters such as dc conductivity, photosensitivity, carrier’s mobility and lifetime. The photocatalytic performance of both the materials in the degradation of an azo dye (Rhodamine B) was subsequently investigated using simulated solar light. The rGO–ZnTe composite exhibited a higher photocatalytic activity (66%) as compared to the as-synthesized ZnTe (23%), essentially due to the synergy between rGO sheets and ZnTe nanoparticles. The role of the carrier’s mobility in the transportation of photo-induced charges (electrons and holes) through the complex network of the composite materials and thus facilitating the photo-degradation process is explained. In the end, the responsible reactive species for the decomposition of Rhodamine B was also interpreted.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Effect of Higher Carrier Mobility of the Reduced Graphene Oxide–Zinc Telluride Nanocomposite on Efficient Charge Transfer Facility and the Photodecomposition of Rhodamine B

Das

Sil

et al. 2022

ACS Omega

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“…2). The peaks at 3426 cm − 1 and 1633 cm − 1 are attributed respectively to stretching and bending vibrations of hydroxyl groups [31] . The peaks at 2920 cm − 1 and 2861 cm − 1 corresponds to symmetric and antisymmetric vibrations of CH 2 .…”

Section: Preparation and Assembly Of Electrodesmentioning

confidence: 99%

Fabrication of Scalable Mesoporous Zincospiroffite (Zn2Te3O8) -RGO Hybrid Electrodes for Low-Cost High-Performance Supercapacitors

Ramakrishnan,

Meethal,

Thekkethil

et al. 2023

Preprint

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A zincospiroffite-reduced graphene oxide (Zn2Te3O8-RGO) hybrid material was synthesized using a straightforward, cost-efficient method for the preparation of an efficient electrode material for supercapacitor application. In ambient conditions, a one-step solvothermal synthesis produces a black glittering composite of Zn2Te3O8-RGO. The structure and morphology of the material was analyzed by using FE-SEM, Fourier Transform Infrared spectroscopy (FTIR), X-ray diffraction (XRD), and Raman scattering. The electrode material was designed to be highly conductive and wettable. A symmetric supercapacitor made of hybrid electrode material exhibits a high specific capacitance of 600 F/g at 1A/g with energy and power densities of 83.33 Wh/kg and 0.99 kW/kg, respectively. A specific capacitance of 513.51 F/g at 10 mV/s with 99% retention has also been measured after 5000 charge-discharge cycles. The hybrid material combines well with an aqueous electrolyte, such as 0.1 M KNO3, to form a symmetric supercapacitor with higher power and energy density. For energy storage applications, this material can be an excellent alternative to conventional electrodes.

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“…In some instance, increase in temperature directly influenced the synthesis by significantly decreasing the particle size of the nanomaterial [161]. This method can be considered if the researchers are looking for a photocatalyst with defined morphology as listed: Gd-doped TiO 2 bearing hollow flower morphology, hierarchical TiO 2 of chrysanthemum flower morphology, Bi 2 WO 6 with flower morphology, and many more [162][163][164][165][166]. In recent years, microwave-assisted solvothermal synthesis method has gained attention and deployed for synthesizing materials with more uniform structure with tunable intrinsic properties.…”

Section: Solvothermalmentioning

confidence: 99%

A review on the progress of nanostructure materials for energy harnessing and environmental remediation

et al. 2018

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The nanostructured materials offer various advantages as they provide more flexible space for ease reconstruction, as their nanosize expands the limits and results in confinement effect, enhanced mechanical stability, and large surface area, and make them suitable for photocatalytic activities. The advancement in synthesis techniques provides the freedom to alter its physical properties as per the demand. This article provides a 360° view point on the nanomaterials which are used for solar energy harnessing with respect to environmental and energy application. The discussion emphasizes on various synthesis methods of nanostructured materials, their mechanistic features, usage in demanding applications such as photosplitting of water for hydrogen production, artificial photosynthesis, and water and wastewater treatment with an endnote highlighting the future scope of nanomaterials for real-world applications.

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One-pot solvothermal synthesis of ZnTe/RGO nanocomposites and enhanced visible-light photocatalysis

Cited by 24 publications

References 33 publications

Effect of Higher Carrier Mobility of the Reduced Graphene Oxide–Zinc Telluride Nanocomposite on Efficient Charge Transfer Facility and the Photodecomposition of Rhodamine B

Effect of Higher Carrier Mobility of the Reduced Graphene Oxide–Zinc Telluride Nanocomposite on Efficient Charge Transfer Facility and the Photodecomposition of Rhodamine B

Fabrication of Scalable Mesoporous Zincospiroffite (Zn2Te3O8) -RGO Hybrid Electrodes for Low-Cost High-Performance Supercapacitors

A review on the progress of nanostructure materials for energy harnessing and environmental remediation

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