Preparation and Electrochemical Properties of Pt/Mesoporous-C for Oxygen Reduction Reaction: Effect of Carbonation Temperature

2011 ◽  
Vol 306-307 ◽  
pp. 155-158
Author(s):  
Chia Ying Hsieh ◽  
Yi Shiuan Huang ◽  
Jing Shan Do
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Specific Activity ◽  
Active Agent ◽  
Reduction Reaction ◽  
Step Method ◽  
Pore Characteristics ◽  
Silicon Source ◽  
One Step ◽  
Mass Activity

The mesoporous carbon (MC) synthesized by a one-step method with tetraethyl ortho- silicate (TEOS) as silicon source, sucrose as carbon source and phosphoric acid as active agent, respectively, is used as the support to prepare Pt/MC electrocatalysts. The pore characteristics and the graphitic extend of MC can be adjusted by controlling the carbonation temperature (Tc). The maximum surface area of home-made MC is confirmed and analyzed by BET to be 860.20 m2g-1 with Tc = 900 °C, and the main pore size of MC is 8.70 nm. The maximum mass activity (MA) and specific activity (SA) of the oxygen reduction reaction (ORR) on Pt/MC (P/Si = 0.5, Tc = 900 °C) are experimentally found to be 15.54 A g-1 and 18.05 mA cm-2, respectively.

scholarly journals Enhanced Electrocatalytic Activity and Stability toward the Oxygen Reduction Reaction with Unprotected Pt Nanoclusters

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 955 ◽  
Author(s):  
Jing Liu ◽  
Jiao Yin ◽  
Bo Feng ◽  
Tao Xu ◽  
Fu Wang
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Specific Activity ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Top Down ◽  
Methanol Tolerance ◽  
Pt Nanoclusters ◽  
Mass Activity

The Pt particles within diameters of 1–3 nm known as Pt nanoclusters (NCs) are widely considered to be satisfactory oxygen reduction reaction (ORR) catalysts due to higher electrocatalytic performance and cost effectiveness. However, the utilization of such smaller Pt NCs is always limited by the synthesis strategies, stability and methanol tolerance of Pt. Herein, unprotected Pt NCs (~2.2 nm) dispersed on carbon nanotubes (CNTs) were prepared via a modified top-down approach using liquid Li as a solvent to break down the bulk Pt. Compared with the commercial Pt/C, the resultant Pt NCs/CNTs catalyst (Pt loading: 10 wt.%) exhibited more desirable ORR catalytic performance in 0.1 M HClO4. The specific activity (SA) and mass activity (MA) at 0.9 V for ORR over Pt NCs/CNTs were 2.5 and 3.2 times higher than those over the commercial Pt/C (Pt loading: 20 wt.%). Meanwhile, the Pt NCs/CNTs catalyst demonstrated more satisfactory stability and methanol tolerance. Compared with the obvious loss (~69%) of commercial Pt/C, only a slight current decrease (~10%) was observed for Pt NCs/CNTs after the chronoamperometric measurement for 2 × 104 s. Hence, the as-prepared Pt NCs/CNTs material displays great potential as a practical ORR catalyst.

One-step fabrication of bimetallic PtNi mesoporous nanospheres as an efficient catalyst for the oxygen reduction reaction

Nanoscale ◽  
2018 ◽  
Vol 10 (34) ◽  
pp. 16087-16093 ◽  
Author(s):  
Hongjing Wang ◽  
Hongjie Yu ◽  
Shuli Yin ◽  
Yinghao Li ◽  
Hairong Xue ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Catalyst ◽  
Reduction Reaction ◽  
Step Method ◽  
Efficient Catalyst ◽  
One Step

PtNi mesoporous nanospheres are fabricated by a one-step method in aqueous solution and used as an active catalyst for the oxygen reduction reaction.

Direct fabrication of bimetallic AuPt nanobrick spherical nanoarchitectonics for the oxygen reduction reaction

2019 ◽  
Vol 43 (24) ◽  
pp. 9628-9633 ◽  
Author(s):  
Alam Venugopal Narendra Kumar ◽  
Shuli Yin ◽  
Ziqiang Wang ◽  
Xiaoqian Qian ◽  
Dandan Yang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Step Method ◽  
Direct Fabrication ◽  
One Step ◽  
Method Show

Bimetallic AuPt nanobrick spherical nanoarchitectonics synthesized via a one-step method show excellent ORR performance.

Direct fabrication of tri-metallic PtPdCu tripods with branched exteriors for the oxygen reduction reaction

2018 ◽  
Vol 6 (18) ◽  
pp. 8662-8668 ◽  
Author(s):  
Hongjing Wang ◽  
Shuli Yin ◽  
You Xu ◽  
Xiaonian Li ◽  
Abdulmohsen Ali Alshehri ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Step Method ◽  
Direct Fabrication ◽  
One Step

A one-step method is developed for the fabrication of PtPdCu tripods with branched exteriors for the oxygen reduction reaction.

One-step fabrication of tri-metallic PdCuAu nanothorn assemblies as an efficient catalyst for oxygen reduction reaction

2018 ◽  
Vol 6 (8) ◽  
pp. 3642-3648 ◽  
Author(s):  
Hongjing Wang ◽  
Shuli Yin ◽  
Yinghao Li ◽  
Hongjie Yu ◽  
Chunjie Li ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Step Method ◽  
Efficient Catalyst ◽  
One Step

A one-step method is proposed for the fabrication of PdCuAu nanothorn assemblies as an efficient catalyst for the oxygen reduction reaction.

scholarly journals Palladium nanoparticles loaded on nitrogen and boron dual-doped single-wall carbon nanohorns with high electrocatalytic activity in the oxygen reduction reaction

RSC Advances ◽  
2018 ◽  
Vol 8 (59) ◽  
pp. 33688-33694 ◽  
Author(s):  
Xueyou Tan ◽  
Jinxuan Zhang ◽  
Xiaohui Wu ◽  
Yuanyuan Wang ◽  
Meixian Li ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Palladium Nanoparticles ◽  
Reduction Reaction ◽  
Step Method ◽  
Single Wall Carbon ◽  
Carbon Nanohorns ◽  
One Step ◽  
Single Wall Carbon Nanohorns

Palladium nanoparticles with a diameter of 2–4 nm loaded on nitrogen and boron dual-doped single-wall carbon nanohorns (Pd-NBCNHs) are prepared via one-step method and their electrocatalytic activities are studied for the oxygen reduction reaction.

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