Enhanced electrocatalytic activity of in situ carbon encapsulated molybdenum phosphide derived from a hybrid POM for the HER over a wide pH range

2022 ◽  
Author(s):  
Balasingh Thangadurai Jebaslinhepzybai ◽  
Elavarasan Samaraj ◽  
Thangaian Kesavan ◽  
Manickam Sasidharan ◽  
J. Arockia Selvi
Keyword(s):  
Electrocatalytic Activity ◽  
Molybdenum Phosphide ◽  
Wide Ph Range ◽  
Ph Range

Hybrid polyoxometalate derived in situ carbon encapsulated molybdenum phosphide (HPOM-MoP/C) exhibits excellent HER activity in a wide pH range.

Iron-assisted engineering of molybdenum phosphide nanowires on carbon cloth for efficient hydrogen evolution in a wide pH range

2017 ◽  
Vol 5 (43) ◽  
pp. 22790-22796 ◽  
Author(s):  
Yuan Teng ◽  
Xu-Dong Wang ◽  
Hong-Yan Chen ◽  
Jin-Feng Liao ◽  
Wen-Guang Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Cloth ◽  
Molybdenum Phosphide ◽  
Wide Ph Range ◽  
Ph Range

Novel MoP nanowire catalysts on carbon cloth prepared via facile iron-assisted approach exhibited excellent HER activity in a wide pH range.

scholarly journals Surface engineering-modulated porous N-doped rod-like molybdenum phosphide catalysts: towards high activity and stability for hydrogen evolution reaction over a wide pH range

RSC Advances ◽  
2018 ◽  
Vol 8 (47) ◽  
pp. 26871-26879 ◽  
Author(s):  
Liying Chai ◽  
Wenyu Yuan ◽  
Xue Cui ◽  
Haiying Jiang ◽  
Junwang Tang ◽  
...  
Keyword(s):  
Hydrogen Evolution Reaction ◽  
Surface Engineering ◽  
Cyclic Stability ◽  
One Dimensional ◽  
Nitrogen Doped ◽  
Catalytic Activities ◽  
Synthetic Strategy ◽  
Molybdenum Phosphide ◽  
Wide Ph Range ◽  
Ph Range

Porous one-dimensional (1D) nitrogen-doped molybdenum phosphide (N-MoP) nanorods can be produced via a two-step synthetic strategy. The prepared N-MoP catalysts show high HER catalytic activities and cyclic stability over a wide pH range.

Optimized electronic structure and p-band centre control engineering to enhance surface absorption and inherent conductivity for accelerated hydrogen evolution over a wide pH range

2020 ◽  
Vol 22 (26) ◽  
pp. 14537-14543
Author(s):  
Yuanzhe Wang ◽  
Dong Wang ◽  
Jiajia Gao ◽  
Xianfeng Hao ◽  
Zhiping Li ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Electrocatalytic Activity ◽  
Electronic Configuration ◽  
Surface Absorption ◽  
Control Engineering ◽  
Wide Ph Range ◽  
Ph Range

Numerous experiments have demonstrated that an appropriate electronic configuration can effectively activate the electrocatalytic activity.

scholarly journals Synthesis of Chitosan-Functionalized Fibrous Membrane for Immobilization of Horseradish Peroxidase: Interfacial Property and Application for Catalytic Oxidation of P-Nitrophenol

2018 ◽  
Vol 13 (2) ◽  
pp. 155892501801300
Author(s):  
Cuie Wang ◽  
Xinhua Liu
Keyword(s):  
Catalytic Oxidation ◽  
Enzyme Catalysis ◽  
Fibrous Membrane ◽  
Interfacial Property ◽  
Mass Loading ◽  
Hydrophobic Polymer ◽  
Immobilization Of Enzymes ◽  
Wide Ph Range ◽  
Ph Range

A hydrophilic fibrous membrane consisting of a network of a non-crystalline hydrophobic polymer and an in situ crosslinked hydrophilic chitosan polymer is studied. This chitosan-functionalized membrane can be employed as a support for immobilization of horseradish peroxidases (HRPs). The immobilized HRPs (mass loading ~110 mg /g) show high stabilities over a wide pH range of 4~10 and temperature range of 25~60°C. In addition, the immobilized HRPs can function as a recyclable biocatalyst for catalytic oxidation of p-nitrophenol (PNP). After 10 cycles, the PNP removal efficiency is 70 percent. The results demonstrate that the chitosan-functionalized fibrous membrane is a promising support for immobilization of enzymes and has applications related to enzyme catalysis.

Effect of speciation transformation on the coagulation behavior of Al13 and Al13 aggregates

2009 ◽  
Vol 59 (4) ◽  
pp. 815-822 ◽  
Author(s):  
Xiaohong Wu ◽  
Changqing Ye ◽  
Dongsheng Wang ◽  
Xiaopeng Ge ◽  
Hongxiao Tang
Keyword(s):  
Dominant Species ◽  
Chemical Interaction ◽  
Surface Adsorption ◽  
Surface Precipitation ◽  
Floc Size ◽  
Species Transformation ◽  
Wide Ph Range ◽  
Ph Range

Flocculation of kaolin suspension with aluminium fractal polycations was investigated as a function of aluminium concentration and pH. Aluminium flocculants included Al13 and Al13 aggregates with OH/Al ratio of 2.6 and 2.8, respectively. The flocculation kinetics and floc size distribution were monitored by light scattering. The characterization of flocculants showed that the tridecatmer Al13 and bridged [Al13]n with out-sphere structure were the dominant species for all flocculants in a wide pH range. The coagulation results indicated that the pre and in situ-formed [Al13]n play a key role in removing particles. With the increasing concentration of [Al13]n, coagulation mechanisms were transformed from charge-neutralization, electro-patch coagulation to bridge-aggregation. Moreover, sweep-flocculation was involved at higher dosage besides other three mechanisms when amorphous aluminium oxides formed. Hence, chemical interaction between particles and flocculants evolved from surface adsorption to surface precipitation for aluminium polycations by virtue of species transformation.

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