Green synthesis of PdCu supported on graphene/polyoxometalate LBL films for high-performance formic acid oxidation

RSC Advances ◽  
2015 ◽  
Vol 5 (79) ◽  
pp. 64534-64537 ◽  
Author(s):  
Ai Ma ◽  
Xiaofeng Zhang ◽  
Xiaoying Wang ◽  
Lijuan Le ◽  
Shen Lin
Keyword(s):  
Green Synthesis ◽  
High Performance ◽  
Composite Films ◽  
Formic Acid Oxidation ◽  
Electrochemical Process ◽  
Acid Oxidation ◽  
Functionalized Graphene ◽  
Lbl Assembly ◽  
One Step ◽  
Lbl Films

PdCu alloy nanaoparticles (with sizes of ca. 4.5 nm) have been synthesized by a one-step electrochemical process on composite films constructed from functionalized graphene (GN) and H3PMo12O40 (PMo12) by LBL assembly.

Hyperbranched PdRu nanospine assemblies: an efficient electrocatalyst for formic acid oxidation

2018 ◽  
Vol 6 (36) ◽  
pp. 17514-17518 ◽  
Author(s):  
Hongjing Wang ◽  
Yinghao Li ◽  
Chunjie Li ◽  
Ziqiang Wang ◽  
You Xu ◽  
...  
Keyword(s):  
Formic Acid ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Synthetic Method ◽  
One Step

A very simple one-step synthetic method is developed for the fabrication of PdRu nanospine assemblies for electrocatalytic formic acid oxidation.

scholarly journals Co-intercalated layered double hydroxides as thermal and photo-oxidation stabilizers for polypropylene

2018 ◽  
Vol 9 ◽  
pp. 2980-2988 ◽  
Author(s):  
Qian Zhang ◽  
Qiyu Gu ◽  
Fabrice Leroux ◽  
Pinggui Tang ◽  
Dianqing Li ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
High Performance ◽  
Composite Films ◽  
Inorganic Materials ◽  
Photo Oxidation ◽  
Molecular Anions ◽  
Multifunctional Additives ◽  
One Step ◽  
Overall Resistance ◽  
Double Hydroxides

An elegant and efficient approach consisting in the co-intercalation of stabilizing molecular anions is described here. The thermal stabilizer calcium diethyl bis[[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]phosphonate] (Irganox 1425, MP-Ca) and a photo-oxidation stabilizer (hindered amine light stabilizer, HALS) are co-intercalated into the interlayer regions of layered double hydroxides (LDH) in a one-step coprecipitation. These hybrid organic–inorganic materials are successively dispersed in polypropylene to form H n M n ′-Ca2Al/PP composite films (with H = HALS and M = MP) through a solvent casting method. The corresponding crystalline structure, chemical composition, morphology as well as the resistance against thermal aging and photo-oxidation are carefully investigated by various techniques. The results show that the powdered H n M n ′-Ca2Al-LDHs hybrid materials have a much higher thermal stability than MP-Ca and HALS before intercalation. In addition, the H n M n ′-Ca2Al/PP composites exhibit a higher overall resistance against thermal degradation and photo-oxidation compared to LDHs intercalated with only HALS or MP. This underlines the benefit of the co-intercalation. The co-intercalated LDH materials pave a new way in designing and fabricating high-performance multifunctional additives for polymers.

scholarly journals Formic Acid Oxidation on Pd Thin Film Coated Au Nanocrystals

Surfaces ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 372-386 ◽  
Author(s):  
Yongan Tang ◽  
Shouzhong Zou
Keyword(s):  
Thin Films ◽  
Film Thickness ◽  
Formic Acid ◽  
Single Crystals ◽  
High Performance ◽  
Formic Acid Oxidation ◽  
Oxidation Potential ◽  
Acid Oxidation ◽  
Band Theory ◽  
Gold Nanocrystals

Cubic, octahedral, and rhombic dodecahedral gold nanocrystals enclosed by {100}, {111}, and {110} facets, respectively, were prepared by a seed-mediated growth method at the room temperature. Palladium thin films were coated on these Au nanocrystals by a redox replacement approach to explore their catalytic activities. It is revealed that formic acid and carbon monoxide oxidation in 0.1 M HClO4 on Au nanocrystals coated with one monolayer (ML) of Pd are facet-dependent and resemble those obtained from corresponding Pd single crystals and Pd films deposited on bulk Au single crystals, suggesting epitaxial growth of Pd overlayers on the Au nanocrystal surfaces. As the Pd film thickness increased, formic acid oxidation current density decreased and the CO oxidation potential moved to more negative. The catalytic activity remained largely unchanged after 3–5 MLs of Pd deposition. The specific adsorption of (bi)sulfate was shown to hinder the formic acid oxidation and the effect decreased with the increasing Pd film thickness. These observations were explained in the framework of the d-band theory. This study highlights the feasibility of engineering high-performance catalysts through deposition of catalytically active metal thin films on facet-controlled inert nanocrystals.

Ultrathin AgPt alloy nanowires as a high-performance electrocatalyst for formic acid oxidation

Nano Research ◽  
2017 ◽  
Vol 11 (1) ◽  
pp. 499-510 ◽  
Author(s):  
Xian Jiang ◽  
Gengtao Fu ◽  
Xia Wu ◽  
Yang Liu ◽  
Mingyi Zhang ◽  
...  
Keyword(s):  
Formic Acid ◽  
High Performance ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Alloy Nanowires

One-step growth of 3–5nm diameter palladium electrocatalyst in a carbon nanoparticle–chitosan host and characterization for formic acid oxidation

2010 ◽  
Vol 55 (22) ◽  
pp. 6601-6610 ◽  
Author(s):  
Niancai Cheng ◽  
Richard A. Webster ◽  
Mu Pan ◽  
Shichun Mu ◽  
Liza Rassaei ◽  
...  
Keyword(s):  
Formic Acid ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Carbon Nanoparticle ◽  
One Step ◽  
Step Growth
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