Journal ArticleDOI
Large scale synthesis of CdS nanorods and its utilization in photo-catalytic H2 production
C M Janet,R P Viswanath +1 more
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In this article, a large scale CdS nanorods along with nanostrips and plates have been prepared by using the precursor cadmium oxalate under mild conditions with ethylene glycol as the solvent and (NH4)2S as the sulfiding agent, without using catalysts, surfactants or template.Abstract:
CdS nanorods along with nanostrips and plates have been prepared on a large scale by the solvothermal route using the precursor cadmium oxalate under mild conditions with ethylene glycol as the solvent and (NH4)2S as the sulfiding agent, without using catalysts, surfactants or template. The aspect ratio of the rods varied from 3 to 30. Characterization has been done by TEM, HR-TEM, EDX, HR-SEM, XRD, BET surface area, UV–vis absorption, photoluminescence and fluorescence studies. Photo-catalytic H2 production activity was tested with as-synthesized CdS, calcined CdS, noble metal loaded CdS and for bulk CdS. The nanorods being formed are used as such for H2 production. The as-synthesized CdS is found to have very good H2 production capacity compared to that of the bulk CdS. Upon Pt loading much enhanced activity was observed in the rate of hydrogen production.read more
Citations
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Journal ArticleDOI
Nanostructured materials for photocatalytic hydrogen production
Jiefang Zhu,Michael Zäch +1 more
TL;DR: In this article, the authors focus on recently developed nanostructured photocatalysts and highlight potential directions required to push this research field a step further, which may be further increased by adding sensitizers or scavengers.
Journal ArticleDOI
Interfacial Charge Carrier Dynamics in Core-Shell Au-CdS Nanocrystals
TL;DR: In this article, the interfacial charge carrier dynamics for core−shell Au-CdS nanocrystals with various shell thicknesses were investigated and the electron charging of Au core and hole-enriched CdS shell was revealed with corresponding XPS analysis and photocurrent measurement.
Journal ArticleDOI
Enhanced photocatalytic hydrogen evolution under visible light over Cd1−xZnxS solid solution with cubic zinc blend phase
TL;DR: In this article, a series of Cd 1− x Zn x S solid solutions were synthesized at 80°C with the assistance of sodium dodecylsulfate, and the structures, optical properties and morphologies of the solid solutions have been studied by X-ray diffraction, UV-vis diffuse reflectance spectroscopy, and transmission electron microscopy.
Journal ArticleDOI
Photocatalytic Hydrogen Production with Visible Light over Pt-Interlinked Hybrid Composites of Cubic-Phase and Hexagonal-Phase CdS
TL;DR: In this paper, a hybrid photocatalytic system based on a mixed-phase cadmium sulfide matrix composed of nanoparticulate cubic-phase CdS (c-CdS) with average particle diameters of 13 nm and a bandgap energy of 2.6 eV was proposed.
Journal ArticleDOI
Single crystal CdS nanowires with high visible-light photocatalytic H2-production performance
TL;DR: In this paper, single crystalline hexagonal CdS nanowires were prepared by a solvothermal method using ethylenediamine as a solvent, and the photocatalytic performance of the as-synthesized Pt/CdS composites was evaluated towards H2 generation from a lactic acid aqueous solution under visible light (λ ≥ 420 nm).
References
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Journal ArticleDOI
Characterization and photocatalytic mechanism of nanosized CdS coupled TiO2 nanocrystals under visible light irradiation
TL;DR: Nanosized CdS coupled TiO2 nanocrystals were prepared by a microemulsion-mediated solvothermal method at relatively low temperatures as discussed by the authors, and the prepared samples were characterized by X-ray photoelectron spectroscopy (XPS), XPS, BET surface area analysis, XRD, and high-resolution transmission electron microscopy (HRTEM).
Journal ArticleDOI
Measurement of Forbidden Energy Gap of Semiconductors by Diffuse Reflectance Technique
S. P. Tandon,J. P. Gupta +1 more
TL;DR: In this article, the energy coordinate of the point at which the linear increase in the Kubelka-Munk function starts gives the energy value of the forbidden energy gap is discussed.
Journal ArticleDOI
Shape evolution of single-crystalline iron oxide nanocrystals.
TL;DR: Shape- and size-controlled synthesis of single-crystalline maghemite (gamma-Fe2O3) nanocrystals are performed by utilizing a solution-based one-step thermolysis method, and the resulting shapes are diverse, including slightly faceted spheres, diamonds, prisms, and hexagons.
Journal ArticleDOI
Semiconductor Nanorod Liquid Crystals
TL;DR: In this paper, the formation of liquid crystalline phases of CdSe semiconductor nanorods has been studied and shown to have great importance for both application and fundamental study.
Journal ArticleDOI
Photocatalytic Hydrogen Evolution from Water on Nanocomposites Incorporating Cadmium Sulfide into the Interlayer
Wenfeng Shangguan,Akira Yoshida +1 more
TL;DR: In this paper, the photocatalytic activity of the composites intercalating CdS was improved by adding sulfite ions, which efficiently suppress the disulfide formation, allowing hydrogen evolution at a higher rate.
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