Monodisperse CuS nanodisks: low-temperature solvothermal synthesis and enhanced photocatalytic activity

RSC Advances ◽  
2014 ◽  
Vol 4 (103) ◽  
pp. 59185-59193 ◽  
Author(s):  
Yu-Qiao Zhang ◽  
Bo-Ping Zhang ◽  
Li-Feng Zhu
Keyword(s):  
Photocatalytic Activity ◽  
Low Temperature ◽  
Size Distribution ◽  
Solvothermal Synthesis ◽  
Polyvinyl Pyrrolidone ◽  
Solvothermal Process ◽  
Narrow Size Distribution ◽  
Controllable Synthesis

Controllable synthesis of uniformly disk-shaped CuS nanostructures with a narrow size distribution was realized by a low-temperature (150 °C) solvothermal process using polyvinyl pyrrolidone (PVP) as the surfactant.

Controllable synthesis of perovskite-like PbBiO2Cl hollow microspheres with enhanced photocatalytic activity for antibiotic removal

CrystEngComm ◽  
2017 ◽  
Vol 19 (32) ◽  
pp. 4777-4788 ◽  
Author(s):  
Sheng Yin ◽  
Ting Wu ◽  
Ming Li ◽  
Jun Di ◽  
Mengxia Ji ◽  
...  
Keyword(s):  
Complex System ◽  
Photocatalytic Activity ◽  
Hollow Microspheres ◽  
Polyvinyl Pyrrolidone ◽  
Porous Sphere ◽  
Controllable Synthesis ◽  
System P ◽  
Antibiotic Removal

Novel perovskite-like PbBiO2Cl materials with hollow and porous sphere-like structures were successfully synthesized using a polyvinyl pyrrolidone (PVP) and 1-hexadecyl-3-methylimidazolium chlorine ([C16mim]Cl) complex system.

scholarly journals Non-aqueous sol–gel synthesis through a low-temperature solvothermal process of anatase showing visible-light photocatalytic activity

RSC Advances ◽  
2014 ◽  
Vol 4 (87) ◽  
pp. 46762-46770 ◽  
Author(s):  
Mohamed Karmaoui ◽  
David M. Tobaldi ◽  
Andrijana Sever Skapin Andrijana Sever Skapin ◽  
Robert C. Pullar ◽  
Maria P. Seabra ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Low Temperature ◽  
Visible Light ◽  
Sol Gel ◽  
Solvothermal Process ◽  
One Pot ◽  
Visible Light Photocatalytic Activity ◽  
Sol Gel Synthesis ◽  
Visible Light Photocatalytic

A novel, facile method based on a non-aqueous sol–gel solvothermal process has been developed to synthesise spherical TiO2 nanoparticles (NPs) in one pot.

Controllable synthesis of PbSe nanorods via a low temperature solvothermal process

2013 ◽  
Vol 96 ◽  
pp. 97-99 ◽  
Author(s):  
Ying Jia ◽  
Honglong Shi ◽  
Guling Zhang ◽  
Fang Wang ◽  
Huixin He ◽  
...  
Keyword(s):  
Low Temperature ◽  
Solvothermal Process ◽  
Controllable Synthesis

Preparation of Submicron Silica Powders from Sodium Silicate Using Ultrasonic Energy

2007 ◽  
Vol 336-338 ◽  
pp. 920-923
Author(s):  
Sang Geun Lee ◽  
Yoon Sik Jang ◽  
Seong Soo Park ◽  
Byung Young Moon ◽  
Beom Soo Kang ◽  
...  
Keyword(s):  
Particle Size ◽  
Low Temperature ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Sodium Silicate ◽  
Narrow Size Distribution ◽  
Emulsion Method ◽  
Conventional Process ◽  
Broad Size Distribution ◽  
Ultrasonic Process

Submicron silica powders were prepared by w/o emulsion method using inexpensive sodium silicate, ammonium sulfate and Triton N-57 as SiO2 source, precipitant and emulsifier, respectively. Nano-sized silica powders with narrow size distribution were prepared at a low temperature of 25°C for 1h by ultrasonic irradiation of the reactants using a commercial ultrasonic cleaner operating at a frequency of 47kHz, whereas silica powders with larger size and broad size distribution were synthesized using the same reactants at the same temperature and for the same time by the conventional process without ultrasounds. The particle size and size distribution of the silica powders obtained by the ultrasonic process were smaller and narrower than those by the conventional process, indicating that the application of ultrasound in the synthesis of silica powders by the w/o emulsion method is an efficient way to have powders with smaller and narrower particle size distribution.

scholarly journals Synthesis and photophysics of 6-dimethylaminopurine-capped Q-CdS nanoparticles—a study of its photocatalytic behavior

2004 ◽  
Vol 6 (2) ◽  
pp. 61-68 ◽  
Author(s):  
Anil Kumar ◽  
Shipra Mital
Keyword(s):  
Photocatalytic Activity ◽  
Aqueous Medium ◽  
Size Distribution ◽  
Quantum Efficiency ◽  
Surface States ◽  
Cds Nanoparticles ◽  
Narrow Size Distribution ◽  
The Core ◽  
Diffusion Controlled ◽  
Surface Capping

Nanoparticles of CdS have been stabilized in aqueous medium by surface capping with 6- dimethylaminopurine at pH 11.0 in the presence of excessCd2+. The nucleation of the cluster is controlled through coordination of 6-dimethylaminopurinevia. -N(CH3)2group. Excess 6-dimethylaminopurine binds to the core structure through H-bonding involving protonated N(9). CdS capped with 6-dimethylaminopurine produced relatively small sized particles (2 nm) having a narrow size distribution. These particles did not exhibit any Ostwald's ripening and its solid sample could be fully redispersed in aqueous medium. Thermolysis results in the growth of these particles but demonstrates a better photocatalytic activity. Relaxation kinetics reveals the surface to contain a large number of surface states and the emission is originated by the presence of sulfur vacancies on the particle. The addition of indole simply quenches the emission of CdS in a bimolecular collisional process at a diffusion-controlled rate of about9×109dm3mol−1s−1. Irradiation of the reaction mixture containing CdS and indole by light ofλ>360nm results in the formation of indigo with a quantum efficiency of 0.1.

Macrostructure and microphysics of Saturn's E-ring

1984 ◽  
Vol 75 ◽  
pp. 607-613 ◽  
Author(s):  
Kevin D. Pang ◽  
Charles C. Voge ◽  
Jack W. Rhoads
Keyword(s):  
Size Distribution ◽  
Spherical Shape ◽  
Mie Scattering ◽  
Narrow Size Distribution ◽  
Electrostatic Levitation ◽  
Volcanic Origin ◽  
Micron Diameter

Abstract.All observed optical and infrared properties of Saturn's E-ring can be explained in terms of Mie scattering by a narrow size distribution of ice spheres of 2 - 2.5 micron diameter. The spherical shape of the ring particles and their narrow size distribution imply a molten (possibly volcanic) origin on Enceladus. The E-ring consists of many layers, possibly stratified by electrostatic levitation.

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