scholarly journals One-Step Synthesis of Bifunctional Nickel Phosphide Nanowires as Electrocatalysts for Hydrogen and Oxygen Evolution Reactions

2021 ◽  
Vol 9 ◽  
Author(s):  
Dong Xiang ◽  
Biao Zhang ◽  
Hongsheng Zhang ◽  
Liangping Shen
Keyword(s):  
Oxygen Evolution ◽  
Rational Design ◽  
Active Agent ◽  
Deionized Water ◽  
Ammonium Bromide ◽  
Nickel Phosphide ◽  
Red Phosphorus ◽  
Nickel Phosphides ◽  
One Step ◽  
Hydrothermal Approach

The Ni2P nanowires were simply synthesized via a rapid one-step hydrothermal approach, in which deionized water, red phosphorus, nickel acetate, and hexadecyl trimethyl ammonium bromide were used as the solvent, phosphor and nickel sources, and active agent, respectively. The as-synthesized Ni2P nanowire clusters were composed of uniform nanowires with length of about 10 μm and diameter of about 40 nm. The Ni2P nanowires exhibited enhanced electrocatalytic activity for both hydrogen evolution reaction and oxygen evolution reaction This work provides good guidance for the rational design of nickel phosphides with unique nanostructures for highly efficient overall water splitting.

Fast fabrication of self-supported porous nickel phosphide foam for efficient, durable oxygen evolution and overall water splitting

2016 ◽  
Vol 4 (15) ◽  
pp. 5639-5646 ◽  
Author(s):  
Xiaoguang Wang ◽  
Wei Li ◽  
Dehua Xiong ◽  
Lifeng Liu
Keyword(s):  
Energy Efficiency ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Nickel Phosphide ◽  
Porous Nickel ◽  
Step Method ◽  
Overall Water Splitting ◽  
Operation Conditions ◽  
One Step

Self-supported porous Ni–P foam is fabricated by a convenient one-step method, and exhibits excellent electrocatalytic performance towards oxygen evolution reaction. An alkaline electrolyzer constructed using two self-supported porous Ni–P foams shows superior energy efficiency of 90.2% at 10 mA cm−2, and can sustain 1000 h under operation conditions without obvious degradation.

Phase-Controllable Synthesis of Nickel Phosphides Using a New Ligand Myristic Acid

2013 ◽  
Vol 679 ◽  
pp. 23-26 ◽  
Author(s):  
Jie Chang ◽  
Yan Hui Ning ◽  
Su Li Wu ◽  
Shu Fen Zhang
Keyword(s):  
Myristic Acid ◽  
Nickel Phosphide ◽  
Red Phosphorus ◽  
Controllable Synthesis ◽  
Facile Hydrothermal Method ◽  
X Ray ◽  
Nickel Phosphides ◽  
Transmission Electron ◽  
Different Temperatures ◽  
Xrd Patterns

Myristic acid was employed as a new ligand in a facile hydrothermal method to synthesize nanosized nickel phosphide particles with controlled phases at different temperatures. The phases of the as-obtained products were determined by X-ray powder diffraction (XRD) patterns. The morphologies of the products were characterized by transmission electron microscopy (TEM). Experiments indicated that pure Ni2P phase could be prepared at 160°C for 10h when nontoxic red phosphorus and nickel dichloride were used as starting materials in the presence of myristic acid. While pure Ni12P5 phase could be prepared by increasing the reaction temperature to 200°C.

One-step synthesis of nickel phosphide nanowire array supported on nickel foam with enhanced electrocatalytic water splitting performance

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 107859-107864 ◽  
Author(s):  
Jian Xiao ◽  
Qiying Lv ◽  
Yan Zhang ◽  
Zheye Zhang ◽  
Shuai Wang
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Nickel Foam ◽  
Nanowire Array ◽  
Bifunctional Catalyst ◽  
Nickel Phosphide ◽  
One Step

One-step synthesis of a nickel phosphide nanowire array on nickel foam, which can be used as a bifunctional catalyst for water splitting and shows an excellent electrocatalytic activity for the hydrogen and oxygen evolution reaction.

scholarly journals ZnO Nano-Rod Arrays Synthesized with Exposed {0001} Facets and the Investigation of Photocatalytic Activity

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 522
Author(s):  
Xinying Yang ◽  
Jin Tian ◽  
Yang Guo ◽  
Mengyuan Teng ◽  
Haixia Liu ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Photocatalytic Activity ◽  
Degradation Rate ◽  
Cetyl Trimethyl Ammonium Bromide ◽  
Zno Nanorods ◽  
Ammonium Bromide ◽  
One Step ◽  
Hydrothermal Approach ◽  
Cetyl Trimethyl Ammonium ◽  
Maximum Exposure

Zinc oxide (ZnO) possesses superior chemical and physical properties so that it can occupy an essential position in the application of nanostructures. In this paper, ZnO nano-rod arrays were synthesized by a simple one-step hydrothermal approach with the assistance of cetyl trimethyl ammonium bromide (CTAB). Exposure of the {0001} facets could be controlled by adjusting the amount of CTAB and the maximum exposure of the {0001} facets of ZnO nanorods is obtained at 1.2 g of CTAB. The photocurrent, EIS, and PL measurements support the facile charge transfer with minimum recombination of the photogenerated excitons of the ZnO nano-rod arrays obtained at 1.2 g of CTAB. Consequently, the obtained ZnO nano-rod arrays at the optimal CTAB of 1.2 g exhibit an excellent photocatalytic degradation rate of 99.7% for rhodamine B (RhB), while the degradation rate of RhB by the ZnO obtained without CTAB is only 35%.

Hierarchically porous FeNi3@FeNi layered double hydroxide nanostructures: One-step fast electrodeposition and highly efficient electrocatalytic performances for overall water splitting

2021 ◽  
Author(s):  
Zihao Liu ◽  
Shifeng Li ◽  
Fangfang Wang ◽  
Mingxia Li ◽  
Yonghong Ni
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Hierarchically Porous ◽  
One Step ◽  
Double Hydroxide

FeNi-layered double hydroxide (LDH) is thought to be an excellent electrocatalyst for oxygen evolution reaction (OER), but it always shows extremely poor electrocatalytic activity toward hydrogen evolution reaction (HER) in...

scholarly journals N, S and Transition-Metal Co-Doped Graphene Nanocomposites as High-Performance Catalyst for Glucose Oxidation in a Direct Glucose Alkaline Fuel Cell

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 202
Author(s):  
Yexin Dai ◽  
Jie Ding ◽  
Jingyu Li ◽  
Yang Li ◽  
Yanping Zong ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Active Sites ◽  
High Performance ◽  
Glucose Oxidation ◽  
Alkaline Fuel Cell ◽  
Blank Group ◽  
Graphene Nanocomposites ◽  
Doped Graphene ◽  
One Step ◽  
Hydrothermal Approach

In this work, reduced graphene oxide (rGO) nanocomposites doped with nitrogen (N), sulfur (S) and transitional metal (Ni, Co, Fe) were synthesized by using a simple one-step in-situ hydrothermal approach. Electrochemical characterization showed that rGO-NS-Ni was the most prominent catalyst for glucose oxidation. The current density of the direct glucose alkaline fuel cell (DGAFC) with rGO-NS-Ni as the anode catalyst reached 148.0 mA/cm2, which was 40.82% higher than the blank group. The DGAFC exhibited a maximum power density of 48 W/m2, which was more than 2.08 folds than that of blank group. The catalyst was further characterized by SEM, XPS and Raman. It was speculated that the boosted performance was due to the synergistic effect of N, S-doped rGO and the metallic redox couples, (Ni2+/Ni3+, Co2+/Co3+ and Fe2+/Fe3+), which created more active sites and accelerated electron transfer. This research can provide insights for the development of environmental benign catalysts and promote the application of the DGAFCs.

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