Crystal phase-dependent electrocatalytic hydrogen evolution performance of ruthenium–boron intermetallics

2020 ◽  
Vol 56 (20) ◽  
pp. 3061-3064 ◽  
Author(s):  
Xu Zou ◽  
Lina Wang ◽  
Xuan Ai ◽  
Hui Chen ◽  
Xiaoxin Zou
Keyword(s):  
Hydrogen Evolution ◽  
Crystal Phase ◽  
Crystal Phases ◽  
Activity Trends

Four crystal phases of ruthenium–boron intermetallics, including Ru7B3, RuB, Ru2B3 and RuB2, are selectively synthesized and their activity trends toward the HER are investigated.

scholarly journals Liquid crystal phase transitions in suspensions of mineral colloids: new life from old roots

2013 ◽  
Vol 371 (1988) ◽  
pp. 20120263 ◽  
Author(s):  
H. N. W. Lekkerkerker ◽  
G. J. Vroege
Keyword(s):  
Phase Transitions ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Colloidal Suspensions ◽  
Crystal Phase ◽  
Liquid Crystal Phase ◽  
Future Developments ◽  
Mineral Particles ◽  
Crystal Phases ◽  
Liquid Crystal Phases

A review is given of the field of mineral colloidal liquid crystals : liquid crystal phases formed by individual mineral particles within colloidal suspensions. Starting from their discovery in the 1920s, we discuss developments on the levels of both fundamentals and applications. We conclude by highlighting some promising results from recent years, which may point the way towards future developments.

Crystal phase effect upon O2 activation on gold surfaces through intrinsic strain

Nanoscale ◽  
2019 ◽  
Vol 11 (31) ◽  
pp. 14587-14591 ◽  
Author(s):  
Lixiang Zhong ◽  
Shuzhou Li
Keyword(s):  
Crystal Phase ◽  
Gold Surfaces ◽  
Phase Effect ◽  
O2 Activation ◽  
Crystal Phases ◽  
Intrinsic Strain

Different crystal phases have remarkably different surface reactivities due to their distinct intrinsic surface strains even for close-packed surfaces.

Tuning of crystal phase of nickel telluride nanosheets to construct superior electrocatalyst for hydrogen evolution

2021 ◽  
pp. 161955
Author(s):  
Yang Xiang ◽  
Kun Xiong ◽  
Linjian Yu ◽  
Haidong Zhang ◽  
Jia Chen ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Crystal Phase

scholarly journals Same titanium glycolate precursor but different products: successful synthesis of twinned anatase TiO2 nanocrystals with excellent solar photocatalytic hydrogen evolution capability

2017 ◽  
Vol 4 (8) ◽  
pp. 1319-1329 ◽  
Author(s):  
Gang Cheng ◽  
Yi Wei ◽  
Jinyan Xiong ◽  
Yixin Gan ◽  
Jiaxin Zhu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Anatase Tio2 ◽  
Crystal Phase ◽  
Tio2 Nanocrystals ◽  
Photocatalytic Hydrogen Evolution ◽  
Synthesis Protocol ◽  
Titanium Glycolate

Exploiting a synthesis protocol to tailor TiO2 with a unique morphology and crystal phase has received considerable interest in the energy and environmental fields.

Phase-dependant electrocatalytic activity of colloidally synthesized WP and α-WP2 electrocatalysts for hydrogen evolution reaction

2021 ◽  
Author(s):  
Siyabonga Nkabinde ◽  
Patrick Mwonga ◽  
Siyasanga Mpelane ◽  
Zakhele Ndala ◽  
Tshwarela Kolokoto ◽  
...  
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Crystal Phase ◽  
Metal Phosphides ◽  
Transition Metal Phosphides

Transition metal phosphides (TMPs) have emerged as efficient non-noble electrocatalysts for hydrogen evolution reaction (HER). However, the effect of their crystal phase on the electrocatalytic activity is rarely reported due...

scholarly journals Macrophage Polarization Related to Crystal Phases of Calcium Phosphate Biomaterials

2021 ◽  
Vol 22 (20) ◽  
pp. 11252
Author(s):  
Linghao Xiao ◽  
Yukari Shiwaku ◽  
Ryo Hamai ◽  
Kaori Tsuchiya ◽  
Keiichi Sasaki ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Inflammatory Response ◽  
Macrophage Polarization ◽  
Ion Concentration ◽  
Crystal Phase ◽  
M2 Macrophage ◽  
M1 Macrophage ◽  
Crystal Phases ◽  
Anti Inflammatory ◽  
Excessive Inflammatory Response

Calcium phosphate (CaP) materials influence macrophage polarization during bone healing. However, the effect of the crystal phase of CaP materials on the immune response of bone remains unclear. In this study, the effect of the crystal phases of CaP materials on the regulation of macrophage polarization was investigated. Human THP-1 cells and mouse RAW 264 cells were cultured with octacalcium phosphate (OCP) and its hydrolyzed form Ca-deficient hydroxyapatite to assess the expression of pro-inflammatory M1 and anti-inflammatory M2 macrophage-related genes. OCP inhibited the excessive inflammatory response and switched macrophages to the anti-inflammatory M2 phenotype, which promoted the expression of the interleukin 10 (IL10) gene. In contrast, HL stimulated an excessive inflammatory response by promoting the expression of pro-inflammatory M1 macrophage-related genes. To observe changes in the microenvironment induced by OCP and HL, inorganic phosphate (Pi) and calcium ion (Ca2+) concentrations and pH value in the medium were measured. The expression of the pro-inflammatory M1 macrophage-related genes (tumor necrosis factor alpha (TNFα) and interlukin 1beta (IL1β)) was closely related to the increase in ion concentration caused by the increase in the CaP dose. Together, these results suggest that the microenvironment caused by the crystal phase of CaP materials may be involved in the immune-regulation capacity of CaP materials.

Boosting acetone oxidation efficiency over MnO2 nanorods by tailoring crystal phases

2019 ◽  
Vol 43 (48) ◽  
pp. 19126-19136 ◽  
Author(s):  
Li Cheng ◽  
Jinguo Wang ◽  
Chi Zhang ◽  
Bei Jin ◽  
Yong Men
Keyword(s):  
Crystal Phase ◽  
Crystal Phases ◽  
Oxidation Efficiency ◽  
Catalytic Performances

MnO2 nanorods with different crystal phases (e.g. α-, β- and γ-MnO2) exhibited distinct crystal-phase dependent catalytic performances for acetone oxidation.

Regulation of Surface Micro-Circumstances and Crystal Phase of Pd2B Mesoporous Nanoparticles for Enhanced Hydrogen Evolution Electrocatalysis

2021 ◽  
Author(s):  
You Xu ◽  
Mengying Liu ◽  
Tianlun Ren ◽  
Shengqi Wang ◽  
Tiantian Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Crystal Phase ◽  
Proton Reduction ◽  
Highly Efficient ◽  
Mesoporous Nanoparticles ◽  
Splitting System

The hydrogen evolution reaction (HER) is the crucial cathodic half-reaction in electrocatalytic water splitting system. The development of highly efficient catalysts that can trigger proton reduction with minimal overpotential and...

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