Atomically dispersed Rh-doped NiFe layered double hydroxides: precise location of Rh and promoting hydrazine electrooxidation properties

Nanoscale ◽  
2020 ◽  
Author(s):  
Yu-Fei Song ◽  
Guihao Liu ◽  
Zelin Wang ◽  
Tianyang Shen ◽  
Xusheng Zheng ◽  
...  
Keyword(s):  
Noble Metal ◽  
Layered Double Hydroxides ◽  
Active Sites ◽  
Precise Location ◽  
Double Hydroxides ◽  
Hydrazine Electrooxidation

Noble metal-based catalysts have sparked huge attention owing to their intriguing activity and selectivity. Revealing the noble metal active sites and keeping them in a form of stable and high...

scholarly journals Recent Advances in Layered-Double-Hydroxides Based Noble Metal Nanoparticles Efficient Electrocatalysts

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2644
Author(s):  
Zexuan Zhang ◽  
Peilong Li ◽  
Xin Zhang ◽  
Cun Hu ◽  
Yuwen Li ◽  
...  
Keyword(s):  
Noble Metal ◽  
Layered Double Hydroxides ◽  
Active Sites ◽  
Clean Energy ◽  
Metal Catalysts ◽  
Metal Species ◽  
Energy Crisis ◽  
Noble Metal Catalysts ◽  
Recent Advances ◽  
Double Hydroxides

With the energy crisis and environmental pollution becoming more and more serious, it is urgent to develop renewable and clean energy. Hydrogen production from electrolyzed water is of great significance to solve the energy crisis and environmental problems in the future. Recently, layered double hydroxides (LDHs) materials have been widely studied in the electrocatalysis field, due to their unique layered structure, tunable metal species and highly dispersed active sites. Moreover, the LDHs supporting noble metal catalysts obtained through the topotactic transformation of LDHs precursors significantly reduce the energy barrier of electrolyzing water, showing remarkable catalytic activity, good conductivity and excellent durability. In this review, we give an overview of recent advances on LDHs supporting noble metal catalysts, from a brief introduction, to their preparation and modification methods, to an overview of their application in the electrocatalysis field, as well as the challenges and outlooks in this promising field on the basis of current development.

Newly developed electrochemical synthesis of Co-based layered double hydroxides: toward noble metal-free electro-catalysis

2019 ◽  
Vol 7 (18) ◽  
pp. 11241-11249 ◽  
Author(s):  
Elisa Musella ◽  
Isacco Gualandi ◽  
Erika Scavetta ◽  
Arianna Rivalta ◽  
Elisabetta Venuti ◽  
...  
Keyword(s):  
Noble Metal ◽  
Layered Double Hydroxides ◽  
Electrochemical Synthesis ◽  
Metal Free ◽  
Electro Catalysis ◽  
Catalytic Applications ◽  
Double Hydroxides

A novel and reproducible protocol allows the electro-synthesis of LDHs for electro-catalytic applications.

Revealing Ni-based layered double hydroxides as high-efficiency electrocatalysts for the oxygen evolution reaction: a DFT study

2019 ◽  
Vol 7 (40) ◽  
pp. 23091-23097 ◽  
Author(s):  
Zhe Xue ◽  
Xinyu Zhang ◽  
Jiaqian Qin ◽  
Riping Liu
Keyword(s):  
High Activity ◽  
Oxygen Evolution ◽  
Noble Metal ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
High Efficiency ◽  
Dft Study ◽  
Earth Abundant ◽  
Double Hydroxides

The development of high-activity and earth-abundant non-noble metal electrocatalysts for the oxygen evolution reaction (OER) is highly desirable but is an ongoing challenge facing us now.

Preparation and photocatalytic reduction of CO2 on noble metal (Pt, Pd, Au) loaded Zn–Cr layered double hydroxides

2013 ◽  
Vol 107 ◽  
pp. 138-140 ◽  
Author(s):  
Ken-ichi Katsumata ◽  
Kazuya Sakai ◽  
Kei Ikeda ◽  
Gabriela Carja ◽  
Nobuhiro Matsushita ◽  
...  
Keyword(s):  
Noble Metal ◽  
Layered Double Hydroxides ◽  
Photocatalytic Reduction ◽  
Reduction Of Co2 ◽  
Double Hydroxides

scholarly journals Mg-Fe-mixed oxides derived from layered double hydroxides: A study of the surface properties

2011 ◽  
Vol 76 (12) ◽  
pp. 1661-1671 ◽  
Author(s):  
Milica Hadnadjev-Kostic ◽  
Tatjana Vulic ◽  
Radmila Marinkovic-Neducin ◽  
Aleksandar Nikolic ◽  
Branislav Jovic
Keyword(s):  
Surface Properties ◽  
Layered Double Hydroxides ◽  
Active Sites ◽  
Mixed Oxides ◽  
Lower Surface ◽  
Multiphase System ◽  
Fischer Tropsch ◽  
Acid And Base ◽  
Phase Range ◽  
Double Hydroxides

The influence of surface properties on the selectivity of the synthesized catalysts was studied, considering that their selectivity towards particular hydrocarbons is crucial for their overall activity in the chosen Fischer- -Tropsch reaction. Magnesium- and iron-containing layered double hydroxides (LDH), with the general formula: [Mg1-xFex(OH)2](CO3)x/2?mH2O, x = = n(Fe)/(n(Mg)+n(Fe)), synthesized with different Mg/Fe ratio and their thermally derived mixed oxides were investigated. Magnesium was chosen because of its basic properties, whereas iron was selected due to its well-known high Fischer-Tropsch activity, redox properties and the ability to form specific active sites in the layered LDH structure required for catalytic application. The thermally less stable multiphase system (synthesized outside the optimal single LDH phase range with additional Fe-phase), having a lower content of surface acid and base active sites, a lower surface area and smaller fraction of smaller mesopores, showed higher selectivity in the Fischer-Tropsch reaction. The results of this study imply that the metastability of derived multiphase oxides structure has a greater influence on the formation of specific catalyst surface sites than other investigated surface properties.

scholarly journals Recent Progress on Transition Metal Based Layered Double Hydroxides Tailored for Oxygen Electrode Reactions

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1394
Author(s):  
Jing Wang ◽  
Heng Kong ◽  
Haihong Zhong ◽  
Yu Jiang ◽  
Fei Guo ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Transition Metal ◽  
Layered Double Hydroxides ◽  
Active Sites ◽  
Rational Design ◽  
Great Influence ◽  
Oxygen Electrode ◽  
Energy Storage And Conversion ◽  
Electrode Reactions ◽  
Double Hydroxides

The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), namely, so-called oxygen electrode reactions, are two fundamental half-cell reactions in the energy storage and conversion devices, e.g., zinc–air batteries and fuel cells. However, the oxygen electrode reactions suffer from sluggish kinetics, large overpotential and complicated reaction paths, and thus require efficient and stable electrocatalysts. Transition-metal-based layered double hydroxides (LDHs) and their derivatives have displayed excellent catalytic performance, suggesting a major contribution to accelerate electrochemical reactions. The rational regulation of electronic structure, defects, and coordination environment of active sites via various functionalized strategies, including tuning the chemical composition, structural architecture, and topotactic transformation process of LDHs precursors, has a great influence on the resulting electrocatalytic behavior. In addition, an in-depth understanding of the structural performance and chemical-composition-performance relationships of LDHs-based electrocatalysts can promote further rational design and optimization of high-performance electrocatalysts. Finally, prospects for the design of efficient and stable LDHs-based materials, for mass-production and large-scale application in practice, are discussed.

Hierarchical CoNi-Sulfide Nanosheet Arrays Derived from Layered Double Hydroxides toward Efficient Hydrazine Electrooxidation

2016 ◽  
Vol 29 (6) ◽  
pp. 1604080 ◽  
Author(s):  
Lei Zhou ◽  
Mingfei Shao ◽  
Cong Zhang ◽  
Jingwen Zhao ◽  
Shan He ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Nanosheet Arrays ◽  
Double Hydroxides ◽  
Hydrazine Electrooxidation

Design and Preparation of Three-Dimensional Hetero-electrocatalysts of NiCo -Layered Double Hydroxide Nanosheets Incorporated with Silver Nanoclusters for Enhanced Oxygen Evolution Reactions

Nanoscale ◽  
2021 ◽  
Author(s):  
Bingxian Chu ◽  
Qiuxia Ma ◽  
Ze-Sheng Li ◽  
Bolin Li ◽  
Furong Huang ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Active Sites ◽  
Three Dimensional ◽  
Silver Nanoclusters ◽  
Double Hydroxide ◽  
Double Hydroxides

Layered double hydroxides (LDHs) are one of the most effective electrocatalysts. However, it is still needed to improve the lower conductivity and limited active sites of LDHs to enhance their...

scholarly journals Layered double hydroxide-based electrocatalysts for the oxygen evolution reaction: identification and tailoring of active sites, and superaerophobic nanoarray electrode assembly

2021 ◽  
Author(s):  
Daojin Zhou ◽  
Pengsong Li ◽  
Xiao Lin ◽  
Adam McKinley ◽  
Yun Kuang ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
Double Hydroxide ◽  
Double Hydroxides

Opportunities and challenges in tailoring layered double hydroxides and constructing them into superaerophobic nanoarray electrodes for an efficient oxygen evolution reaction

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