scholarly journals Acid-triggered interlayer sliding of two-dimensional copper(i)–organic frameworks: more metal sites for catalysis

2021 ◽  
Author(s):  
Hou-Gan Zhou ◽  
Ri-Qin Xia ◽  
Ji Zheng ◽  
Daqiang Yuan ◽  
Guo-Hong Ning ◽  
...  
Keyword(s):  
Chemical Stability ◽  
Two Dimensional ◽  
Catalytic Activities

The addition of TFA can trigger the interlay sliding of 2D copper(i) organic frameworks prepared by combing the chemistry of MOFs and COFs. The variation of interlay stacking largely affected the porosity, chemical stability and catalytic activities.

scholarly journals Solvothermal Preparation of Spherical Bi2O3 Nanoparticles Uniformly Distributed on Ti3C2Tx for Enhanced Capacitive Performance

2021 ◽  
Author(s):  
Tao Li ◽  
Xuefeng Chang ◽  
Lifang Mei ◽  
Xiayun Shu ◽  
Jidong Ma ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Chemical Stability ◽  
Layered Structure ◽  
Layered Material ◽  
Two Dimensional ◽  
Capacitive Performance ◽  
Solvothermal Preparation

Ti3C2Tx is a promising new two-dimensional layered material for supercapacitors with good electrical conductivity and chemical stability. However, Ti3C2Tx has problems such as collapse of the layered structure and low...

scholarly journals Promoting N2 electroreduction to ammonia by fluorine-terminating Ti3C2Tx MXene

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Yu Ding ◽  
Junbo Zhang ◽  
Anxiang Guan ◽  
Qihao Wang ◽  
Si Li ◽  
...  
Keyword(s):  
Surface Functionalization ◽  
Reduction Reaction ◽  
Medium Density ◽  
Two Dimensional ◽  
Ambient Conditions ◽  
Hydrogen Electrode ◽  
Catalytic Activities ◽  
Enhanced Adsorption ◽  
Partial Current ◽  
Catalytic Performances

AbstractTwo-dimensional MXene-based materials are potential of presenting unique catalytic performances of electrocatalytic reactions. The surface functionalization of MXene-based catalysts is attractive for developing efficient electrocatalysts toward nitrogen reduction reaction. Herein, we reported a Ti3C2Tx MXene with a medium density of surface functionalized fluorine terminal groups, as an excellent N2 reduction reaction electrocatalyst with enhanced adsorption and activation of N2. The Ti3C2Tx MXene catalyst showed a production rate of ammonia as 2.81 × 10–5 μmol·s−1·cm−2, corresponding to a partial current density of 18.3 μA·cm−2 and a Faradic efficiency of 7.4% at − 0.7 V versus reversible hydrogen electrode in aqueous solutions at ambient conditions, substantially exceeding similar Ti3C2Tx MXene catalysts but with higher or lower densities of surface fluorine terminal groups. Our work suggests the capability of developing surface functionalization toolkit for enhancing electrochemical catalytic activities of two-dimensional MXene-based materials.

A facile one step route to synthesize WO3 nanoplatelets for CO oxidation and photodegradation of RhB: microstructural, optical and electrical studies

RSC Advances ◽  
2016 ◽  
Vol 6 (73) ◽  
pp. 69615-69626 ◽  
Author(s):  
N. Dirany ◽  
M. Arab ◽  
V. Madigou ◽  
Ch. Leroux ◽  
J. R. Gavarri
Keyword(s):  
Co Oxidation ◽  
Room Temperature ◽  
Organic Pollutant ◽  
Two Dimensional ◽  
Catalytic Activities ◽  
Electrical Studies ◽  
Co Conversion ◽  
One Step

Two-dimensional nanoplatelets of WO3 were synthesized at room temperature. The large exposed (020) facets of the nanoplatelets show a high catalytic activities, for CO conversion and for photodegradation of organic pollutant.

Template-directed approach to two-dimensional molybdenum phosphide–carbon nanocomposites with high catalytic activities in the hydrogen evolution reaction

2016 ◽  
Vol 40 (7) ◽  
pp. 6015-6021 ◽  
Author(s):  
Zhaoquan Yao ◽  
Yuezeng Su ◽  
Chenbao Lu ◽  
Chongqing Yang ◽  
Zhixiao Xu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Catalytic Activity ◽  
Hydrogen Evolution Reaction ◽  
Active Sites ◽  
High Catalytic Activity ◽  
Two Dimensional ◽  
Carbon Nanocomposites ◽  
Carbon Nanosheets ◽  
Catalytic Activities ◽  
Molybdenum Phosphide

MoP-embedded 2D N-doped porous carbon nanosheets, with excellent electrical conductivity and abundant active sites, achieved high catalytic activity in the HER.

DNA-Based Self-Assembly of Gold Nanostructures

2020 ◽  
Author(s):  
Song J
Keyword(s):  
Gold Nanoparticles ◽  
Chemical Stability ◽  
Self Assembly ◽  
Three Dimensional ◽  
Dna Nanotechnology ◽  
Dna Origami ◽  
Gold Nanostructures ◽  
Two Dimensional ◽  
Specific Targeting ◽  
Targeting Ability

Plasmonic assemblies of gold nanoparticles (AuNPs) triggered by DNA exhibited excellent biocompatibility and specific-targeting ability. Moreover, the integration of AuNPs and DNA allows the DNA scaffolds exhibit greater chemical stability and optical plasmonic properties. In this mini review, we summarized the development of DNA nanotechnology, especially DNA framework and DNA origami that were employed to fabricate two-dimensional and three-dimensional (3D) Au nanoassembled nanostructures.

Two-Dimensional {Co3+-Co2+} and {Fe3+-Co2+} Networks and Their Heterogeneous Catalytic Activities

2014 ◽  
Vol 2014 (29) ◽  
pp. 4966-4974 ◽  
Author(s):  
Sumit Srivastava ◽  
Manvender Singh Dagur ◽  
Rajeev Gupta
Keyword(s):  
Two Dimensional ◽  
Catalytic Activities ◽  
Heterogeneous Catalytic

scholarly journals Chemical stability of hydrogen boride nanosheets in water

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Kurt Irvin M. Rojas ◽  
Nguyen Thanh Cuong ◽  
Hiroaki Nishino ◽  
Ryota Ishibiki ◽  
Shin-ichi Ito ◽  
...  
Keyword(s):  
Chemical Stability ◽  
First Principles ◽  
Electronic Devices ◽  
Proton Exchange ◽  
Two Dimensional ◽  
First Principles Calculations ◽  
Boron Hydride ◽  
Two Dimensional Materials ◽  
Bond Network ◽  
Catalytic Applications

AbstractBoron-based two-dimensional materials are of interest for use in electronic devices and catalytic applications, for which it is important that they are chemically stable. Here, we explore the chemical stability of hydrogen boride nanosheets in water. Experiments reveal that mixing hydrogen boride and water produces negligible amounts of hydrogen, suggesting that hydrolysis does not occur and that hydrogen boride is stable in water, which is in contrast to most boron hydride materials. First-principles calculations reveal that the sheets interact weakly with water even in the presence of defects and that negatively charged boron prevents the onset of hydrolysis. We conclude that the charge state of boron and the covalent boron-boron bond network are responsible for the chemical and structural stability. On the other hand, we found that proton exchange with hydrogen boride nanosheets does occur in water, indicating that they become acidic in the presence of water.

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