نتایج جستجو برای: microwave hydrothermal

تعداد نتایج: 67304  

2009
Jishu Han Hao Zhang Haizhu Sun Ding Zhou Bai Yang

In the conventional procedure of the preparation of aqueous semiconductor nanocrystals (NCs), the growth of NCs was mainly through the thermodynamics-favored Ostwald ripening process. It required additional energy to promote NC growth, such as reflux, hydrothermal method, microwave irradiation, and sonochemical synthesis. Energy-promoted growth usually led to the decomposition of mercapto-ligan...

Journal: :Dalton transactions 2014
Sergio Obregón Soo W Lee Gerardo Colón

Er-doped BiVO4 are synthesized by means of a surfactant free microwave assisted hydrothermal method having good photoactivities under sun-like excitation for the degradation of methylene blue. From the structural and morphological characterization, it has been stated that the presence of Er(3+) induces a slight stabilization of the tetragonal phase, probably due to its incorporation in the BiVO...

2014
L. A. Ponomarenko F. Schedin A. K. Geim S. P. Lau R. Bhardwaj S. J. Tang W. J. Yuan

Nitrogen-doped graphene quantum dots (N-GQDs) were fabricated by microwave-assisted hydrothermal technique. The optical properties of the N-GQDs were studied. The luminescence of the N-GQDs can be tuned by varying the excitation wavelength. Furthermore, two-photon luminescence of the N-GQDs excited by near-infrared laser can be obtained. It is shown that N-doping play a key role on two-photon l...

Journal: :Journal of Minerals and Materials Characterization and Engineering 2002

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 2009

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