نتایج جستجو برای: hydrothermal conditions

تعداد نتایج: 862579  

In this paper, indium tin oxide (ITO) nanoparticles has been prepared by chemical methods under given conditions with solution of indium chloride (InCl3·4H2O), tin chloride (SnCl4·5H2O) in ammonia solution. The samples were characterized by X-ray Diffraction (XRD) and scanning electron microscopy (SEM) analyses after heat treatments. The SEM results showed that, the size of the ITO particles pr...

2015
Jiabing Gao Haiyue Shi Jing Yang Tao Li Rui Zhang Deliang Chen

Gapped hollow BaTiO3 nanospheres with an apparent diameter of 93 ± 19 nm (shell thickness of 10-20 nm) were synthesized via a dynamic hydrothermal process using TiO2 sols and Ba(2+) ions as the Ti and Ba sources in alkaline aqueous solutions. The phases and morphologies of the BaTiO3 samples were characterized by X-ray diffraction (XRD), SEM, TEM, and Raman spectra. The effects of the hydrother...

Journal: :Chemical communications 2015
Zhe-Yu Zhang Jun Peng Zhen-Yu Shi Wan-Li Zhou Shifa Ullah Khan Hong-Sheng Liu

Nine new Sb-bicapped α-Keggin-type heteropolyoxoniobates (HPNb) were synthesized under hydrothermal conditions. Among them, the As-centered HPNb was never reported before, and the two dimer compounds are the biggest isolated HPNbs at present.

Journal: :Chemical communications 2014
Xun Sun Jie Dou Fengyan Xie Yafeng Li Mingdeng Wei

NiS nanosheets on ITO substrates were synthesized with in situ growth via a one-step hydrothermal route, and exhibited an efficiency of 7.08% which was comparable to the solar cell based on the Pt electrode (7.01%) under the similar conditions.

Journal: :Chemical communications 2013
Ming Xuan Gao Chun Fang Liu Zhu Lian Wu Qiao Ling Zeng Xiao Xi Yang Wen Bi Wu Yuan Fang Li Cheng Zhi Huang

Highly PL carbon quantum dots (CQDs) were successfully prepared from C60 by introducing CTAB and H2O2 in aqueous NaOH under hydrothermal conditions. The CQDs displayed a nanoparticle aggregation-induced emission enhancement (NP-AIEE).

In this paper, indium tin oxide (ITO) nanoparticles has been prepared by chemical methods under given conditions with solution of indium chloride (InCl3·4H2O), tin chloride (SnCl4·5H2O) in ammonia solution. The samples were characterized by X-ray Diffraction (XRD) and scanning electron microscopy (SEM) analyses after heat treatments. The SEM results showed that, the size of the ITO particles pr...

Journal: :Chemical Geology 2021

Molybdenum isotopes are an established proxy for paleoredox conditions in low-temperature surface systems. However, the mechanisms behind demonstrated Mo isotope fractionation during igneous and hydrothermal processes at elevated temperatures still controversial. This study focusses on a comprehensive dataset documenting late stage magmatic-hydrothermal evolution of systematics miarolitic cavit...

2016
Siti Machmudah Hideki Kanda Motonobu Goto

Hydrothermal extraction is known as a natural and green way for antioxidant compounds extraction. Antioxidant compounds from the roots of traditional Chinese medicinal herb Polygonum cuspidatum (P. cuspidatum) has been extracted at hydrothermal conditions. The antioxidant compounds were identified as polyphenolic compounds of resveratrol, rutin and quercetin. The effect of temperatures on the e...

Journal: :Molecules 2016
Chihong Ding Xiaodan Wu Bibi Nazia Auckloo Chen-Tung Arthur Chen Ying Ye Kuiwu Wang Bin Wu

A novel hybrid polyketide-terpenoid, aspergstressin (1), possessing a unique fused polycyclic structure, was induced from culture broth of strain Aspergillus sp. WU 243 by cobalt ion stimulation. The strain was isolated from the digestive gland of Xenograpsus testudinatus, a unique type of crab which dwells in the Kueishantao hydrothermal vents off Taiwan. The chemical structure and relative co...

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