scholarly journals Achieving rough sphere-shaped ZnS with superior attenuation electromagnetic absorption performance

RSC Advances ◽  
2017 ◽  
Vol 7 (7) ◽  
pp. 3907-3913 ◽  
Author(s):  
Yan-chun Sun ◽  
Dong-ping Li ◽  
Ying Yang ◽  
Li-shuang Fan ◽  
Song Wu ◽  
...  
Keyword(s):  
Hydrothermal Route ◽  
Electromagnetic Absorption ◽  
Facile Hydrothermal Route ◽  
Absorption Performance ◽  
Rough Sphere

ZnS micrometer spheres were prepared via a facile hydrothermal route.

Preparation and Electromagnetic Absorption Performance of Ni-RGO

2016 ◽  
Vol 31 (6) ◽  
pp. 567 ◽  
Author(s):  
XU Shuang-Shuang ◽  
CHEN Gong ◽  
ZHANG Hai-Qin ◽  
CHEN Yuan ◽  
ZHAO Yan
Keyword(s):  
Electromagnetic Absorption ◽  
Absorption Performance

PEG-Assisted Hydrothermal Synthesis and Photocatalytic Activity of Bi2Fe4O9 Crystallites

2011 ◽  
Vol 1292 ◽  
Author(s):  
Dengrong Cai ◽  
Jianmin Li ◽  
Shundong Bu ◽  
Shengwen Yu ◽  
Dengren Jin ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Diffuse Reflectance Spectrum ◽  
X Ray Diffraction ◽  
Hydrothermal Route ◽  
Peg 400 ◽  
Transmission Electron ◽  
Light Region ◽  
Facile Hydrothermal Route ◽  
Degradation Ratio

ABSTRACTA facile hydrothermal route assisted by polyethylene glycol (PEG) 400 was utilized to synthesize single-phase Bi2Fe4O9 crystallites. X-ray diffraction results showed the products with PEG 400 of 30 g/L exhibited a preferred growth along the (001) plane. Transmission electron microscopy indicated that the morphology of the as-prepared Bi2Fe4O9 crystallites with PEG 400 were plake-like and rod-like. Strong absorption in visible-light region of the products was characterized by UV-vis diffuse reflectance spectrum (UV-DRS). The photocatalytic activity of Bi2Fe4O9 crystallites was evaluated on degradation of methyl orange (MO) under visible light irradiation. For 3 h irradiation, the degradation ratio was increased to 93% with the aid of a small amount of H2O2. The analysis of FT-IR spectra proved that the Bi2Fe4O9 catalysts were remained stable after the photocalytic reactions.

Effect of hydrothermal dwell time on the diameter-controlled synthesis and magnetic property of MnO2 nanorods

2014 ◽  
Vol 28 (06) ◽  
pp. 1450045 ◽  
Author(s):  
Arbab Mohammad Toufiq ◽  
Fengping Wang ◽  
Qurat-ul-Ain Javed ◽  
Yan Li
Keyword(s):  
Electron Microscopy ◽  
Reaction Time ◽  
Dwell Time ◽  
Hydrothermal Reaction ◽  
Ferromagnetic Behavior ◽  
X Ray Diffraction ◽  
Hydrothermal Route ◽  
Transmission Electron ◽  
Facile Hydrothermal Route ◽  
Hydrothermal Reaction Time

In this paper, single crystalline 1D tetragonal MnO 2 pen-type nanorods were synthesized by varying the dwell time through a facile hydrothermal route at a reaction temperature of 250°C. X-ray diffraction (XRD) and transmission electron microscopy (TEM) studies showed that the diameter of MnO 2 nanorods decreases from 460 nm to 250 nm with the increase in hydrothermal reaction time from 5 h to 15 h. Field-emission scanning electron microscopy (FESEM) and TEM studies revealed the evolution of improved surface morphology of MnO 2 nanorods that are prepared with longer hydrothermal reaction time. The magnetic properties of the products were evaluated using vibrating sample magnetometer (VSM) at room temperature, which showed that the as-prepared samples exhibit weak ferromagnetic behavior. The effect of diameter on the magnetization values was observed and discussed in detail.

Fabrication of Hexagonal Ni Micro/Nano Plates by a Facile Hydrothermal Reduction Route

2014 ◽  
Vol 898 ◽  
pp. 173-176
Author(s):  
Jun Zhang ◽  
Hai Rui Yao ◽  
Hua Bo Li ◽  
Jing Jing Li ◽  
Xiao Kang Bai
Keyword(s):  
Magnetic Hysteresis ◽  
Magnetic Hysteresis Loop ◽  
Face Centered Cubic ◽  
Hydrothermal Route ◽  
Nickel Metal ◽  
Structure Directing Agent ◽  
X Ray ◽  
Facile Hydrothermal Route ◽  
Face Centered ◽  
Hydrothermal Reduction

Hexagonal Ni micro/nanoplates were successfully prepared via a facile hydrothermal route using the polyvinylpyrrolidone as structure-directing agent. It has been verified from x-ray powder diffraction and transmission electronic microscopy that as-prepared products with high purity and fine dispersity belong to face-centered cubic microstructure of nickel metal. The magnetic hysteresis loop of the hexagonal Ni micro/nanoplates exhibits the ferromagnetic characteristics, and its coercivity increases by 25 % in comparison with the bulk nickel materials. The possible mechanism of the formation of hexagonal micro/nanoplates was suggested.

Controlled Synthesis of Cobalt Flowerlike Architectures by a Facile Hydrothermal Route

2008 ◽  
Vol 2008 (17) ◽  
pp. 2733-2738 ◽  
Author(s):  
Ya-jing Zhang ◽  
Ying Zhang ◽  
Zhen-hua Wang ◽  
Da Li ◽  
Tie-yu Cui ◽  
...  
Keyword(s):  
Controlled Synthesis ◽  
Hydrothermal Route ◽  
Facile Hydrothermal Route

Hybrid ZnCo2O4@Co3S4 Nanowires for High-Performance Asymmetric Supercapacitors

2020 ◽  
Vol 15 (12) ◽  
pp. 1552-1558
Author(s):  
Yongli Tong ◽  
Xinyu Cheng ◽  
Dongli Qi ◽  
Baoqian Chi ◽  
Weiqiang Zhang
Keyword(s):  
High Performance ◽  
Reaction Path ◽  
Nickel Foam ◽  
Energy Storage Materials ◽  
Electrochemical Performances ◽  
Hydrothermal Route ◽  
Asymmetric Supercapacitors ◽  
High Area ◽  
Facile Hydrothermal Route

We successfully fabricate hierarchical ZnCo2O4@Co3S4 nanowires directly supported on nickel foam by a facile hydrothermal route. The as-synthesized product possesses large specific surface area and short reaction path, which result in superior electrochemical performances as the electrode of supercapacitor (SC). The obtained electrode material shows high area capacitance of 2.02 C g-1 at current density of 0.8 A g-1 with 95.3% retention of initial capacitance after 6000 cycles. Moreover, the assembled asymmetric supercapacitor (ASC) device using ZnCo2O4@Co3S4 nanowires as anode material displays noticeable electrochemical capability with an energy density of 79.8 mW h g-1 at power density of 1795 W kg-1 and 73.2 mW h g-1 at 9760 W kg-1. In addition, the device shows remarkable cycling capability, maintaining 82.2% retention after long-term cycles. It reveals the as-fabricated material would be promising energy storage materials.

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