scholarly journals Entropy‐Maximized Synthesis of Multimetallic Nanoparticle Catalysts via a Ultrasonication‐Assisted Wet Chemistry Method under Ambient Conditions

2019 ◽  
Vol 6 (7) ◽  
pp. 1900015 ◽  
Author(s):  
Miaomiao Liu ◽  
Zihao Zhang ◽  
Francis Okejiri ◽  
Shize Yang ◽  
Shenghu Zhou ◽  
...  
Keyword(s):  
Ambient Conditions ◽  
Wet Chemistry ◽  
Nanoparticle Catalysts ◽  
Chemistry Method

Stress – Strain Analysis on ZnO Nanostructures Synthesized via Wet Chemistry Method

2015 ◽  
Vol 1112 ◽  
pp. 57-61 ◽  
Author(s):  
Amalia Sholehah ◽  
Akhmad Herman Yuwono
Keyword(s):  
Crystallite Size ◽  
Strain Analysis ◽  
Xrd Analysis ◽  
Heating Process ◽  
Zno Nanostructures ◽  
Stress Strain ◽  
Wet Chemistry ◽  
Chemistry Method ◽  
Hall Method ◽  
Scherrer Equation

In the present work, ZnO nanostructures were synthesized via wet chemistry method. The seeding solution was prepared from zinc nitrate tetrahydrate and hexamethylenetetramine. Prior to the heating process, the seeding solution was immersed in cold bath (0°C). XRD analysis had shown sharp peaks in diffractogram, indicating the high crystallinity of ZnO nanostructures. The crystallite size was determined using Scherrer equation and Williamson-Hall method. Other relevant parameters including stress, strain, and energy density were calculated using Williamson-Hall assuming UDM, UDSM, and UDEDM. The results had revealed that crystallite size calculated with Williamson-Hall method is more accurate than Scherrer equation.

Synthesis and Self-Assembly of Ultrathin NixFe1−x(OH)2 Nanodiscs via a Wet-Chemistry Method

2011 ◽  
Vol 11 (12) ◽  
pp. 11028-11031 ◽  
Author(s):  
Dan Zhou ◽  
Markus Boese ◽  
Rongming Wang ◽  
Hongzhou Zhang
Keyword(s):  
Self Assembly ◽  
Wet Chemistry ◽  
Chemistry Method

scholarly journals Manipulating acoustic and plasmonic modes in gold nanostars

2019 ◽  
Vol 1 (7) ◽  
pp. 2690-2698
Author(s):  
Sharmistha Chatterjee ◽  
Loredana Ricciardi ◽  
Julia I. Deitz ◽  
Robert E. A. Williams ◽  
David W. McComb ◽  
...  
Keyword(s):  
Experimental Evidence ◽  
Wet Chemistry ◽  
Chemistry Method ◽  
Gold Nanostars ◽  
One Step

In this contribution experimental evidence of plasmonic edge modes and acoustic breathing modes in gold nanostars (AuNSs) is reported. AuNSs are synthesized by a surfactant-free, one-step wet-chemistry method.

Highly active electrocatalyst cobalt-carbide nanoparticles synthesized by wet-chemistry method for hydrogen evolution reaction

2020 ◽  
Vol 34 (07n09) ◽  
pp. 2040022
Author(s):  
Yi-Heng Lin ◽  
Po-Chia Huang ◽  
Sheng-Chang Wang ◽  
Jow-Lay Huang
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alternative Energy ◽  
Noble Metals ◽  
Triethylene Glycol ◽  
Promising Alternative ◽  
Wet Chemistry ◽  
Onset Potential ◽  
Chemistry Method ◽  
Cobalt Carbide

Hydrogen is a promising alternative energy without greenhouse gas emissions. The transition metal carbides (TMCs) are considered a sustainable alternatives to noble metals in catalysis. Among the TMCs, Co[Formula: see text]C ([Formula: see text] = 2, 3) nanoparticles (NPs) act as an excellent electrocatalyst for hydrogen evolution reaction (HER) by water splitting. In our report, Co[Formula: see text]C nanocomposites were synthesized by wet chemistry method using cobalt (II) acetate, sodium hydroxide as precursors and triethylene glycol as solvent. In addition, Co2C NPs were synthesized by similar wet chemistry method using cobalt (II) acetate as precursors and triethylene glycol, oleylamine as solvent. The cobalt carbide NPs exhibited high electrocatalytic activity. Co[Formula: see text]C nanocomposites performed a −0.33 V onset potential and 91 mV/dec Tafel slope, while the Co2C NPs exhibited a better performance of −0.27 V and 60 mV/dec, respectively.

Phase Evolution and Formation Mechanism in Acicular Mullite Prepared from Kaolinite via Wet Chemistry Method

2010 ◽  
Vol 152-153 ◽  
pp. 643-647
Author(s):  
Xiao Chun Dai ◽  
Zhu Fa Zhou ◽  
Shu Mei Wang ◽  
Ran Ran Tian ◽  
Chun Rong Wang ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Formation Mechanism ◽  
Phase Evolution ◽  
Molar Ratio ◽  
Wet Chemistry ◽  
Chemistry Method ◽  
Acicular Mullite

Mullite was synthesized by firing precursors prepared from kaolinite via a wet chemistry method at various temperatures. The acicular mullite grains were formed in samples with addition of AlF3 by this process. The phase evolution and morphology of the fired samples were investigated. For the samples without AlF3, the mullitization began to occur at 1300 and almost completed at 1550 , the grains formed were normal-shaped. For the samples with AlF3, acicular mullite was formed, and mullitization began to occur at 1100 and completed at 1250 . The growth of the acicular mullite was associated with a liquid phase. The formed acicular mullite was alumina-rich and had a composition of about 73.4 wt% Al2O3 and 26.6 wt% SiO2 (Al2O3/SiO2=1.65, molar ratio).

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