The triple structure design of 2D amorphous Fe-doped indium phosphate nanosheets as a highly efficient electrocatalyst for water oxidation

2020 ◽  
Vol 8 (35) ◽  
pp. 18232-18243
Author(s):  
Jianxin Han ◽  
Qinghui Wei ◽  
Jifu Zhang ◽  
Bo Zhang ◽  
Can Li ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Active Sites ◽  
Structure Design ◽  
Intrinsic Activity ◽  
Two Dimensional ◽  
Fe Doping ◽  
Metal Phosphates ◽  
Engineering Strategy ◽  
Catalytic Active Sites ◽  
Structure Engineering

A triple structure engineering strategy, combining amorphization, two-dimensional morphology design and Fe doping, is developed to promote the OER activity of metal phosphates, simultaneously enhancing the catalytic active sites and intrinsic activity.

Capturing the active sites of multimetallic (oxy)hydroxides for the oxygen evolution reaction

2020 ◽  
Vol 13 (11) ◽  
pp. 4225-4237
Author(s):  
Xin Bo ◽  
Rosalie K Hocking ◽  
Si Zhou ◽  
Yibing Li ◽  
Xianjue Chen ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Active Sites ◽  
Alkaline Water ◽  
Catalytic Active Sites

The catalytic active sites of NiFe and NiFeCr (oxy)hydroxides are revealed by operando spectroscopic techonologies for alkaline water oxidation.

Fluorination Activates the Basal Plane HER Activity of ReS2: A Combined Experimental and Theoretical Study

2021 ◽  
Author(s):  
Yonggang Liu ◽  
Haijing Li ◽  
Junfu Li ◽  
Xiaoshuang Ma ◽  
Zhiming Cui ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Basal Plane ◽  
Active Sites ◽  
Theoretical Study ◽  
Two Dimensional ◽  
Catalytic Active Sites

Two-dimensional (2D) rhenium disulfide (ReS2) has been attracting immense interests as highly promising hydrogen evolution reaction (HER) electrocatalyst recently. However, the HER catalytic active sites of ReS2 are still limited...

NiMn compound nanosheets for electrocatalytic water oxidation: effects of atomic structures and oxidation states

Nanoscale ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 2472-2478 ◽  
Author(s):  
Zhuwen Chen ◽  
Zheng Wang ◽  
Rongming Cai ◽  
Yangshan Xie ◽  
Jun Yu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Water Oxidation ◽  
Active Sites ◽  
Oxidation States ◽  
Fast Charge ◽  
Atomic Structures ◽  
Catalytic Active Sites ◽  
Transfer Properties

Layered Mn-compounds with abundant catalytic active sites and fast charge transfer properties exhibit advanced OER performances.

scholarly journals Recent Progress, Challenges, and Prospects in Two-Dimensional Photo-Catalyst Materials and Environmental Remediation

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Karim Khan ◽  
Ayesha Khan Tareen ◽  
Muhammad Aslam ◽  
Rizwan Ur Rehman Sagar ◽  
Bin Zhang ◽  
...  
Keyword(s):  
Environmental Remediation ◽  
Active Sites ◽  
Electrical Conductance ◽  
Basic Mechanism ◽  
Structure Design ◽  
Two Dimensional ◽  
Significant Information ◽  
Research Attention ◽  
Hetero Structure ◽  
Photo Catalyst

AbstractThe successful photo-catalyst library gives significant information on feature that affects photo-catalytic performance and proposes new materials. Competency is considerably significant to form multi-functional photo-catalysts with flexible characteristics. Since recently, two-dimensional materials (2DMs) gained much attention from researchers, due to their unique thickness-dependent uses, mainly for photo-catalytic, outstanding chemical and physical properties. Photo-catalytic water splitting and hydrogen (H2) evolution by plentiful compounds as electron (e−) donors is estimated to participate in constructing clean method for solar H2-formation. Heterogeneous photo-catalysis received much research attention caused by their applications to tackle numerous energy and environmental issues. This broad review explains progress regarding 2DMs, significance in structure, and catalytic results. We will discuss in detail current progresses of approaches for adjusting 2DMs-based photo-catalysts to assess their photo-activity including doping, hetero-structure scheme, and functional formation assembly. Suggested plans, e.g., doping and sensitization of semiconducting 2DMs, increasing electrical conductance, improving catalytic active sites, strengthening interface coupling in semiconductors (SCs) 2DMs, forming nano-structures, building multi-junction nano-composites, increasing photo-stability of SCs, and using combined results of adapted approaches, are summed up. Hence, to further improve 2DMs photo-catalyst properties, hetero-structure design-based 2DMs’ photo-catalyst basic mechanism is also reviewed.

scholarly journals Data-informed discovery of hydrolytic nanozymes

2020 ◽  
Author(s):  
Sirong Li ◽  
Zijun Zhou ◽  
Zuoxiu Tie ◽  
Bing Wang ◽  
Meng Ye ◽  
...  
Keyword(s):  
Active Sites ◽  
Metal Organic Framework ◽  
Volume Density ◽  
Enzyme Engineering ◽  
Lewis Acidity ◽  
Intrinsic Activity ◽  
Amide Bonds ◽  
Long Term Stability ◽  
Metal Organic ◽  
Catalytic Active Sites

AbstractNanozyme is a collection of nanomaterials with enzyme-like activity but exhibits higher environmental tolerance and long-term stability than their natural counterparts. Improving the catalytic activity and expanding the category of nanozymes are prerequisites to complement or even supersede natural enzymes. Specifically, a powerful hydrolytic nanozyme is demanded to degrade the unsustainable substance which natural enzymes hardly achieve. However, the development of hydrolytic nanozymes is still hindered by diverse hydrolytic substrates and following complicated mechanisms. Here, we apply two strategies which are informed by data to screen and predict catalytic active sites of MOF (metal–organic framework) based hydrolytic nanozymes. One is to increase the intrinsic activity by finely tuned Lewis acidity of the metal clusters. The other is to adjust the volume density of the active sites by shortening the length of ligands. Finally, we construct a Ce-FMA-MOF-based hydrolytic nanozyme with robust cleavage ability towards phosphate bonds, amide bonds, glycosidic bonds whose energy ascend in order; and even their mixture, biofilms. This work provides a rational methodology to design hydrolytic nanozyme, enriches the diversity of nanozymes, and potentially sheds a light on the evolution of enzyme engineering in the future.

Two-dimensional graphene-like MoSe2 nanosheets anchored on hollow carbon nanofibers as a cathode catalyst for rechargeable Li–O2 batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (24) ◽  
pp. 19843-19847 ◽  
Author(s):  
Yanqing Lai ◽  
Wei Chen ◽  
Zhian Zhang ◽  
Yongqing Gan ◽  
Xing Yang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Carbon Nanofibers ◽  
Active Sites ◽  
Electronic Conductivity ◽  
Cathode Catalyst ◽  
Two Dimensional ◽  
Catalytic Active Sites ◽  
Hollow Carbon

MoSe2@HCNF hybrids are used as the catalyst of Li–O2 batteries and exhibit superior catalytic activity. The more catalytic active sites and the enhanced electronic conductivity make the MoSe2@HCNF hybrids exhibit improved catalytic activity.

Boron-modulated surface of hollow nickel framework for improved hydrogen evolution

2021 ◽  
Author(s):  
Weishi Gu ◽  
Zhongqin Pan ◽  
Han Tao ◽  
Yanling Guo ◽  
Jun Pu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Active Sites ◽  
Nano Structure ◽  
Binder Free ◽  
Structure Engineering

Taking advantage of micro/nano structure engineering and surface boron modulation, we developed a binder-free and support-free electrode to enrich and optimize active sites of Ni.

A small molecular, a big scissoring effect: sodium dodecyl sulfate working on two-dimensional metal organic frameworks

CrystEngComm ◽  
2021 ◽  
Author(s):  
Qing Luo ◽  
Zhen Ding ◽  
Huamin Sun ◽  
Zhen Cheng ◽  
Naien SHI ◽  
...  
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Active Sites ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Sodium Dodecyl ◽  
Advanced Materials ◽  
Controlled Synthesis ◽  
Two Dimensional ◽  
Dodecyl Sulfate ◽  
Metal Organic

Ultrathin two-dimensional (2D) metal-organic framework (MOF) nanosheets are prosperous advanced materials due to their particularly thin thickness and exposed active sites. The difficulty in the controlled synthesis of 2D MOF...

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