scholarly journals Particle Shape Control of Zn-Al Composite Oxides by Using Composite Hydroxides as a Precursor

2020 ◽  
Vol 67 (2) ◽  
pp. 73-79
Author(s):  
Kohei YAMAZAKI ◽  
Mitsuaki MATSUOKA ◽  
Norihiro MURAYAMA
Keyword(s):  
Particle Shape ◽  
Shape Control ◽  
Composite Oxides ◽  
Al Composite

Improvement of Adhesion Strength of Cold Spray Coatings by Particle Shape Control

2018 ◽  
Vol 2018 (0) ◽  
pp. J0440002
Author(s):  
Yuji ICHIKAWA ◽  
Ryotaro TOKORO ◽  
Kazuhiro OGAWA
Keyword(s):  
Adhesion Strength ◽  
Cold Spray ◽  
Particle Shape ◽  
Shape Control ◽  
Spray Coatings

scholarly journals Degradation of one-side fully-chlorinated 1,2,3,4-tetrachloronaphthalene over Fe–Al composite oxides and its hypothesized reaction mechanism

RSC Advances ◽  
2017 ◽  
Vol 7 (29) ◽  
pp. 17577-17585 ◽  
Author(s):  
Yalu Liu ◽  
Huijie Lu ◽  
Wenxiao Pan ◽  
Qianqian Li ◽  
Guijin Su ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Composite Oxides ◽  
Al Composite

Generated PeCNs to MoCNs congeners during the degradation of CN-27 over Fe–Al mixed composite oxides suggest the occurrence of successive hydrodechlorination and side chlorination pathways.

scholarly journals Synthesis of Ordered Mesoporous Zr-Al Composite Oxides with Excellent Structural and Textural Properties and Extremely High Stability

Materials ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3036
Author(s):  
Feng Yu ◽  
Shinan Bi ◽  
Tonghui Liu ◽  
Dahai Pan ◽  
Shuwei Chen ◽  
...  
Keyword(s):  
Self Assembly ◽  
Textural Properties ◽  
Atomic Ratio ◽  
Temperature Treatment ◽  
High Temperature Treatment ◽  
Composite Oxides ◽  
Al Composite ◽  
Ordered Mesoporous ◽  
Assembly Procedure ◽  
Hydrolysis Of

Ordered mesoporous Zr-Al composite oxide materials (denoted as OMZA-x) with different Zr contents have been synthesized by a solvent evaporation-inducing self-assembly procedure associated with a thermal treatment at 100 °C. A cooperative co-assembly process of amphiphilic triblock copolymer F127 molecules and inorganic hydroxyl species originated from the hydrolysis of Zr and Al precursors was proposed to explain the synthesis of OMZA-x. Compared to ordered mesoporous alumina prepared without introducing Zr species, the resultant OMZA-x exhibited a much more ordered mesostructure combined with a distinct increase in the pore volume and specific surface area. The highly homogenous doping of Zr into the mesopore walls together with the formation of Zr-O-Al bonds can effectively enhance the thermal and hydrothermal stability of OMZA-x. For instance, the ordered mesostructure and excellent textural properties of OMZA-6 prepared with the optimum atomic ratio of Al to Zr of 6 could be well maintained even after a high-temperature treatment at 1000 °C for 1 h or a hydrothermal treatment at 100 °C for 6 h.

Shape control of nanostructured cone-shaped particles by tuning the blend morphology of A-b-B diblock copolymers and C-type copolymers within emulsion droplets

2019 ◽  
Vol 10 (19) ◽  
pp. 2415-2423 ◽  
Author(s):  
Eun Ji Kim ◽  
Jae Man Shin ◽  
YongJoo Kim ◽  
Kang Hee Ku ◽  
Hongseok Yun ◽  
...  
Keyword(s):  
Block Copolymers ◽  
Particle Shape ◽  
Shape Control ◽  
Diblock Copolymers ◽  
Emulsion Droplet ◽  
Emulsion Droplets ◽  
Blend Morphology ◽  
Engineering Strategy

An approach to blend AB-type block copolymers and C-type copolymers within the emulsion droplet is an efficient particle shape-engineering strategy.

Particle-shape control and formation mechanisms of hydrothermally derived lead titanate

1999 ◽  
Vol 14 (3) ◽  
pp. 866-875 ◽  
Author(s):  
Jooho Moon ◽  
Melanie L. Carasso ◽  
Henrik G. Krarup ◽  
Jeffrey A. Kerchner ◽  
James H. Adair
Keyword(s):  
Lead Titanate ◽  
Particle Shape ◽  
Shape Control ◽  
Intermediate Phase ◽  
Solubility Diagram ◽  
Particle Morphology ◽  
Formation Mechanisms ◽  
Initial Stage ◽  
Excess Lead ◽  
Alkaline Conditions

Phase-pure perovskite lead titanate with various morphologies has been synthesized by a hydrothermal method at 150 °C. Particle shapes include cubic, tabular, and aggregated platelike shapes. The feedstock concentration greatly influences particle morphology of the hydrothermally derived PbTiO3. At a concentration of 0.05 M, the tabular particles form while cubic particles are produced at 0.1 M. Aggregated plateletlike particles are synthesized at 0.125 M. It was observed that both tabular and cubic particles directly precipitate from the coprecipitated precursor gel. In contrast, the plateletlike shaped intermediate phase appears during the initial stage of reaction at 0.125 M and in situ transforms into perovskite PbTiO3 during further hydrothermal treatment. The intermediate phase preserves its particle shape during transformation and, acting as a template, gives rise to the final tabular PbTiO3 particles. It is demonstrated that only base reagents such KOH and NaOH, which provide a highly basic condition (i.e., pH > 14), promote transformation of the coprecipitated gel into the perovskite PbTiO3. A Hancock and Sharp kinetic analysis in conjunction with microstructural evidence suggests that the formation mechanism is dissolution and recrystallization in which the degree of supersaturation plays an important role in dictating the crystallographic particle phase and morphology of the particles. An experimentally constructed solubility diagram indicates that an excess lead condition is necessary to compensate for loss of lead species and to increase supersaturation to expedite precipitation of PbTiO3 at highly alkaline conditions.

scholarly journals Particle Shape Control via Etching of Core@Shell Nanocrystals

ACS Nano ◽  
2018 ◽  
Vol 12 (9) ◽  
pp. 9186-9195 ◽  
Author(s):  
Alberto Leonardi ◽  
Michael Engel
Keyword(s):  
Particle Shape ◽  
Shape Control ◽  
Core Shell

Template-free synthesis of wormhole-like mesoporous Ni–Al composite oxides and catalytic application for steam reforming of benzene

2015 ◽  
Vol 22 (5) ◽  
pp. 1153-1160 ◽  
Author(s):  
Xingfu Shang ◽  
Xueguang Wang ◽  
Xiujing Zou ◽  
Xionggang Lu ◽  
Weizhong Ding
Keyword(s):  
Steam Reforming ◽  
Catalytic Application ◽  
Composite Oxides ◽  
Al Composite ◽  
Template Free

scholarly journals Factors on Particle Shape Control by Dry Impact Blending Method.

1994 ◽  
Vol 7 (2) ◽  
pp. 35-45 ◽  
Author(s):  
Masaru OTANI ◽  
Tomoyuki UCHIYAMA ◽  
Hironori MINOSHIMA ◽  
Kunio SHINOHARA ◽  
Kunihito TAKAYASHIKI ◽  
...  
Keyword(s):  
Particle Shape ◽  
Shape Control ◽  
Blending Method

Enhanced removal of fluoride and arsenate ions from aqueous solution by magnetic Mg–Al composite oxides (Fe3O4@Mg–Al–O)

2019 ◽  
Vol 49 (11) ◽  
pp. 385-394
Author(s):  
Wenqing Ma ◽  
Wei Zhang ◽  
Yuantao Chen ◽  
Yunsheng Wang ◽  
Fang Yu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Composite Oxides ◽  
Al Composite
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