Enhanced hydrogen evolution properties obtained by electrochemical modification of carbon-supported platinum–copper bimetallic nanocatalysts and structural characterization

RSC Advances ◽  
2015 ◽  
Vol 5 (27) ◽  
pp. 20981-20986 ◽  
Author(s):  
Yong Yang ◽  
Bin Yang ◽  
Jincai Peng ◽  
Zhijing Zhao ◽  
Yumeng Zhao
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Hydrogen Evolution ◽  
Specific Surface Area ◽  
Structural Characterization ◽  
Three Dimensional ◽  
High Specific Surface Area ◽  
Supported Platinum ◽  
Bimetallic Nanocatalysts ◽  
Dimensional Surface

The three-dimensional surface with high specific surface area after being electrochemically modified tremendously enhances Pt–Cu/C hydrogen evolution properties.

scholarly journals Preparation and application of methimazole molecularly imprinted polymer based on silver-loaded dendritic fiber-type silica

RSC Advances ◽  
2021 ◽  
Vol 11 (22) ◽  
pp. 13446-13457
Author(s):  
Chu Hongtao ◽  
Chen Jiaqi ◽  
Yao Dong ◽  
Yu Miao ◽  
Lin Qing ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Molecularly Imprinted Polymer ◽  
Fiber Type ◽  
Three Dimensional ◽  
High Specific Surface Area ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Radial Structure

Dendritic fiber-type silica (KCC-1) has attracted the attention of researchers because of its unique three-dimensional radial structure and high specific surface area.

scholarly journals Residual wood polymers facilitate compounding of microfibrillated cellulose with poly(lactic acid) for 3D printer filaments

2017 ◽  
Vol 376 (2112) ◽  
pp. 20170046 ◽  
Author(s):  
Armin Winter ◽  
Norbert Mundigler ◽  
Julian Holzweber ◽  
Stefan Veigel ◽  
Ulrich Müller ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Three Dimensional ◽  
High Specific Surface Area ◽  
Microfibrillated Cellulose ◽  
Poly Lactic Acid ◽  
Hydroxyl Groups ◽  
Surface Chemical

Microfibrillated cellulose (MFC) is a fascinating material with an obvious potential for composite reinforcement due to its excellent mechanics together with high specific surface area. However, in order to use this potential, commercially viable solutions to important technological challenges have to be found. Notably, the distinct hydrophilicity of MFC prevents efficient drying without loss in specific surface area, necessitating storage and processing in wet condition. This greatly hinders compounding with important technical polymers immiscible with water. Differently from cellulose, the chemistry of the major wood polymers lignin and hemicellulose is much more diverse in terms of functional groups. Specifically, the aromatic moieties present in lignin and acetyl groups in hemicellulose provide distinctly less polar surface-chemical functionality compared to hydroxyl groups which dominate the surface-chemical character of cellulose. It is shown that considerable advantages in the production of MFC-filled poly(lactic acid) filaments for three-dimensional printing can be obtained through the use of MFC containing residual lignin and hemicellulose due to their advantageous surface-chemical characteristics. Specifically, considerably reduced agglomerations of MFC in the filaments in combination with improved printability and improved toughness of printed objects are achieved. This article is part of a discussion meeting issue ‘New horizons for cellulose nanotechnology’.

High specific surface area Mo2C nanoparticles as an efficient electrocatalyst for hydrogen evolution

2015 ◽  
Vol 296 ◽  
pp. 18-22 ◽  
Author(s):  
Chaoyun Tang ◽  
Aokui Sun ◽  
Yushuai Xu ◽  
Zhuangzhi Wu ◽  
Dezhi Wang
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Hydrogen Evolution ◽  
Specific Surface Area ◽  
High Specific Surface Area

scholarly journals Nanoporous Quasi-High-Entropy Alloy Microspheres

Metals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 345 ◽  
Author(s):  
Lianzan Yang ◽  
Yongyan Li ◽  
Zhifeng Wang ◽  
Weimin Zhao ◽  
Chunling Qin
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
High Specific Surface Area ◽  
High Entropy Alloy ◽  
Face Centered Cubic ◽  
High Entropy ◽  
Hierarchical Porous

High-entropy alloys (HEAs) present excellent mechanical properties. However, the exploitation of chemical properties of HEAs is far less than that of mechanical properties, which is mainly limited by the low specific surface area of HEAs synthesized by traditional methods. Thus, it is vital to develop new routes to fabricate HEAs with novel three-dimensional structures and a high specific surface area. Herein, we develop a facile approach to fabricate nanoporous noble metal quasi-HEA microspheres by melt-spinning and dealloying. The as-obtained nanoporous Cu30Au23Pt22Pd25 quasi-HEA microspheres present a hierarchical porous structure with a high specific surface area of 69.5 m2/g and a multiphase approximatively componential solid solution characteristic with a broad single-group face-centered cubic XRD pattern, which is different from the traditional single-phase or two-phase solid solution HEAs. To differentiate, these are named quasi-HEAs. The synthetic strategy proposed in this paper opens the door for the synthesis of porous quasi-HEAs related materials, and is expected to promote further applications of quasi-HEAs in various chemical fields.

KCl-assisted activation: Moringa oleifera branch-derived porous carbon for high performance supercapacitor

2021 ◽  
Vol 45 (12) ◽  
pp. 5712-5719
Author(s):  
Yongxiang Zhang ◽  
Peifeng Yu ◽  
Mingtao Zheng ◽  
Yong Xiao ◽  
Hang Hu ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Porous Carbon ◽  
High Performance ◽  
Moringa Oleifera ◽  
High Specific Surface Area ◽  
Porous Carbons

Porous carbons with a high specific surface area (2314–3470 m2 g−1) are prepared via a novel KCl-assisted activation strategy for high-performance supercapacitor.

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