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Microwave-assisted hydrothermal synthesis was used to grow LiMnPO$_4$ micro- and nanocrystals from acetate precursors. By appropriate adjustment of the precursor concentration and the pH-value of the reactant, the product composition and…

Materials Science · Physics 2014-05-29 Christoph Neef , Carsten Jähne , Hans-Peter Meyer , Rüdiger Klingeler

This study reports on the synthesis of ball-like bismuth ferrite BiFeO3 nanoflowers by means of microwave assisted hydrothermal process and also on their composition and mechanism of growth. It turns out that the petals of the nanoflowers…

Materials Science · Physics 2014-02-07 B. Andrzejewski , K. Chybczynska , B. Hilczer , M. Blaszyk , T. Lucinski , M. Matczak , L. Kepinski

Polyhedral nanocrystals of <alpha>-Fe2O3 are successfully synthesized by annealing FeCl3 on silicon substrate at 1000 oC in the presence of H2 gas diluted with argon (Ar). Uniformly shaped polyhedral nanoparticles (diameter ~50-100 nm) are…

Materials Science · Physics 2011-11-22 Rajesh Kumar , S. Gautam , In-Chul Hwang , K. H. Chae , Nagesh Thakur

Hydrothermal synthesis offers an economical and scalable way to produce nanodiamonds under relatively mild, low-pressure and low-temperature conditions. However,its sustainability and the detailed mechanisms behind diamond formation in such…

The six nanosized PrF3 samples were synthesized using two different chemical reactions and different time of hydrothermal reaction. The X-ray and HRTEM experiments showed high crystallinity of synthesized samples. For all samples the…

The use of microwave irradiation is a promising alternative heat source for the synthesis of inorganic materials such as perovskite oxides. The method offers massive energy and time savings as compared to the traditional ceramic method. In…

Materials Science · Physics 2014-01-10 Jesus Prado-Gonjal , Rainer Schmidt , Emilio Moran

Well-separated mercury sulfide (HgS) nanocrystals are synthesized by a wet chemical route. Transmission electron microscopy studies show that nanocrystals are nearly spherical in shape with average size of 9 nm. Grazing angle X-ray…

Materials Science · Physics 2011-11-15 A. K. Mahapatra , A. K. Dash

A simple hydrothermal method was developed for the synthesis of ultra fine single-crystal {\alpha}-MnO2 nanowires by only using potassium permanganate and sodium nitrite in acidic solution, without any seed or template. Detailed analysis of…

Applied Physics · Physics 2018-09-11 Niraj Kumar , P. Dineshkumar , R. Rameshbabu , Arijit Sen

In this investigation, we have synthesized BiFeO$_{3}$ nanoparticles by varying hydrothermal reaction temperatures from 200 $^{\circ}$C to 120 $^{\circ}$C to assess their visible-light-driven photocatalytic activity along with their…

Materials Science · Physics 2022-02-08 M. A. Basith , Nilufar Yesmin , Rana Hossain

The general topic of energy is regarded to be one of the most important areas for any research and development activities at the start of the twentyfirst century. Therefore, large research efforts are already based on or will be targeted on…

Applied Physics · Physics 2022-03-07 Rainer Schmidt , Jesus Prado-Gonjal , Emilio Moran

Flower-like nanostructures formed by ZnO nanorods were synthesized and deposited on seeded silicon and glass substrates by a hexamethylenetetramine (HMTA) - assisted hydrothermal method at low temperature (90 oC) with methenamine…

Materials Science · Physics 2012-04-30 S. Lopez-Romero , P. Santiago , D. Mendoza

In this study, a complete study of the effect of hydrothermal reaction temperatures on the synthesis and physical properties of V2O5 using the green facile mild hydrothermal method has been performed with six different temperatures 100…

Materials Science · Physics 2022-05-10 M. A. Jalil , M. N. I. Khan , S. Mandal , F. -U. -Z. Chowdhury , M. M. Hossain , D. Jana , M. S. Alam , M. M. Uddin

We report on the synthesis and spectroscopic characterization of Sm$^{3+}$-doped K$_2$YF$_5$ microparticles. The particles were synthesized via the hydrothermal technique, yielding a particle size of approximately 20 $\mu$m in length.…

Materials Science · Physics 2025-10-15 Pakwan Chanprakhon , Michael F. Reid , and Jon-Paul R. Wells

Cryptocrystal layers of ammonium silicon fluoride (NH4)2SiF6 were grown on silicon wafers by dry etching using the vapors of HF:HNO3 solution at room temperature. As-grown layers are composed of white granular crystalline film with…

Materials Science · Physics 2009-11-10 Seref Kalem

We report three different synthesis routes while maintaining similar reaction conditions to choose an effective way to precisely control the growth of ultrafine one dimensional LiMn2O4 in the form of nanorods. We developed a novel method of…

Applied Physics · Physics 2018-09-03 Niraj Kumar , K. Guru Prasad , T. Maiyalagan , Arijit Sen

The experiment was conducted to synthesize carbon nanospheres of different sizes by controlling the temperature in polycondensation reaction of glucose under hydrothermal process. The surface morphology, structural, optical, and thermal…

Materials Science · Physics 2017-06-20 Priya Karna , Sunil Karna

In this paper, we report herein, the conversion of waste prescription and non-prescription pharmaceuticals into carbonaceous materials. The hydrothermal carbonization (HTC) of the pharmaceuticals was carried out at temperatures of 180, 230…

Materials Science · Physics 2023-02-14 Marlene C. Ndoun , Samuel A. Darko

We present results from cryogenic tests of a Volume-Phase Holographic (VPH) grating at 200 K measured at near-infrared wavelengths. The aims of these tests were to see whether the diffraction efficiency and angular dispersion of a VPH…

We demonstrate a hybrid laser microfabrication approach, which combines the technical merits of ultrafast laser-assisted chemical etching and carbon dioxide laser-induced in-situ melting, for centimeter-scale and bonding-free fabrication of…

Applied Physics · Physics 2022-04-19 Aodong Zhang , Jian Xu , Yucen Li , Ming Hu , Zijie Lin , Yunpeng Song , Jia Qi , Wei Chen , Zhaoxiang Liu , Ya Cheng

The present work describes a synthesis route for bulk Ta4AlC3 MAX phase ceramics with high phase purity. Pressure assisted densification was achieved by both hot pressing and spark plasma sintering of tantalum hydride, aluminium and carbon…

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