Effect of Pd Coordination and Isolation on the Catalytic Reduction of O2 to H2O2 over PdAu Bimetallic Nanoparticles

2021 ◽  
Author(s):  
Tomas Ricciardulli ◽  
Sahithi Gorthy ◽  
Jason S. Adams ◽  
Coogan Thompson ◽  
Ayman M. Karim ◽  
...  
Keyword(s):  
Bimetallic Nanoparticles ◽  
Catalytic Reduction ◽  
Effect Of Pd

A one-pot route to the synthesis of alloyed Cu/Ag bimetallic nanoparticles with different mass ratios for catalytic reduction of 4-nitrophenol

2015 ◽  
Vol 3 (7) ◽  
pp. 3450-3455 ◽  
Author(s):  
Wei Wu ◽  
Mei Lei ◽  
Shuanglei Yang ◽  
Li Zhou ◽  
Li Liu ◽  
...  
Keyword(s):  
Bimetallic Catalysts ◽  
High Performance ◽  
Bimetallic Nanoparticles ◽  
Catalytic Reduction ◽  
Low Cost ◽  
Industrial Applications ◽  
Research Interest ◽  
Alloy Nanoparticles ◽  
One Pot ◽  
Copper Based Alloy

Copper-based alloy nanoparticles (NPs) have recently triggered much research interest for the development of low-cost and high-performance bimetallic catalysts that have industrial applications.

scholarly journals Catalytic Reduction of Hexavalent Chromium Using Iron/Palladium Bimetallic Nanoparticle-Assembled Filter Paper

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1183 ◽  
Author(s):  
Daniel Shi ◽  
Zhijun Ouyang ◽  
Yili Zhao ◽  
Jie Xiong ◽  
Xiangyang Shi
Keyword(s):  
Hexavalent Chromium ◽  
Filter Paper ◽  
Environmental Remediation ◽  
Bimetallic Nanoparticles ◽  
Catalytic Reduction ◽  
Low Cost ◽  
Bimetallic Nanoparticle ◽  
Amine Groups ◽  
Positively Charged ◽  
Iron Palladium

Iron/palladium bimetallic nanoparticles (Fe/Pd NPs) are important catalytic materials for the field of environmental remediation. In the present study, filter paper was employed as a substrate for the assembly of Fe/Pd NPs and further applied for the catalytic conversion of hexavalent chromium Cr(VI) toward trivalent Cr(III). First, a filter paper with negative charge was assembled with a layer of positively charged polyethylenimine (PEI) through electrostatic interaction; then, the abundant amine groups of PEI were used to complex Fe(III) ions, followed by reduction via sodium borohydride to produce an Fe NP-assembled filter paper. Thereafter, the Fe/Pd NPs were produced by the reduction of PdCl42− through Fe NPs. The prepared filter paper assembled with Fe/Pd NPs with a mean diameter of 10.1 nm was characterized by various techniques. The Fe/Pd NP-assembled filter paper possesses powerful catalytic activity and can be used to transform Cr(VI) to Cr(III). With its low cost, high sustainability, and convenient industrialization potential, the developed approach may be extended to produce other bimetallic NP-immobilized filter paper for different environmental remediation applications.

Electrocatalytic oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid on supported Au and Pd bimetallic nanoparticles

2014 ◽  
Vol 16 (8) ◽  
pp. 3778-3786 ◽  
Author(s):  
David J. Chadderdon ◽  
Le Xin ◽  
Ji Qi ◽  
Yang Qiu ◽  
Phani Krishna ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Electrocatalytic Oxidation ◽  
Bimetallic Nanoparticles ◽  
Electrochemical Methods ◽  
Furandicarboxylic Acid ◽  
Effect Of Pd

Electrocatalytic oxidation of HMF to FDCA was achieved on Pd/C, Au/C and Pd–Au/C catalysts and the synergistic effect of Pd–Au alloying is clearly demonstrated with electrochemical methods.

Insight into the size effect of Pd nanoparticles on the catalytic reduction of nitrite in water over Pd/C catalysts

2020 ◽  
Vol 7 (7) ◽  
pp. 2117-2129
Author(s):  
Zhiqiang Zhang ◽  
Jinsuo Lu ◽  
Bing Zhang ◽  
Wenxin Shi ◽  
Yuan Guo ◽  
...  
Keyword(s):  
Size Effect ◽  
Catalytic Reduction ◽  
Pd Nanoparticles ◽  
Effect Of Pd ◽  
Insight Into

Nitrite catalytic reduction over Pd nanocatalyst is a size sensitive reaction in terms of both activity and selectivity.

scholarly journals The Use of a Biopolymer Conjugate for an Eco-Friendly One-Pot Synthesis of Palladium-Platinum Alloys

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1948 ◽  
Author(s):  
Daniele Silvestri ◽  
Stanisław Wacławek ◽  
Rohith K. Ramakrishnan ◽  
Abhilash Venkateshaiah ◽  
Kamil Krawczyk ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Bimetallic Nanoparticles ◽  
Catalytic Reduction ◽  
Pt Nanoparticles ◽  
Attenuated Total Reflection ◽  
Molar Ratio ◽  
One Pot ◽  
Synthesis Conditions ◽  
Molar Ratios ◽  
Green Approach

Raising health and environmental concerns over the nanoparticles synthesized from hazardous chemicals have urged researchers to focus on safer, environmentally friendlier and cheaper alternatives as well as prompted the development of green synthesis. Apart from many advantages, green synthesis is often not selective enough (among other issues) to create shape-specific nanoparticle structures. Herein, we have used a biopolymer conjugate and Pd and Pt precursors to prepare sustainable bimetallic nanoparticles with various morphology types. The nanoparticles were synthesized by a novel green approach using a bio-conjugate of chitosan and polyhydroxybutyrate (Cs-PHB). The bio-conjugate plays the simultaneous roles of a reducing and a capping agent, which was confirmed by attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and energy dispersive X-ray spectrometry (EDS) analysis, proving the presence of a Cs-PHB layer on the surface of the prepared nanoparticles. The EDS profile also revealed the elemental structure of these nanoparticles and confirmed the formation of a Pd/Pt alloy. TEM morphological analysis showed the formation of star-like, octahedron or decahedron Pd/Pt nanoparticles, depending on the synthesis conditions. The bimetallic Pd/Pt nanoparticles synthesized with various Pd/Pt molar ratios were successfully applied for the catalytic reduction of 4-nitrophenol to 4-aminophenol by borohydride. The calculated κc values (ratio of kapp to the concentration of the catalyst) revealed that the decahedron nanoparticles (size of 15 ± 4 nm), synthesized at the molar ratio of 2:1 (Pd/Pt), temperature of 130 °C, 10 g/L of Cs-PHB conjugate and time of 30 min, exhibited excellent catalytic activity compared to other bimetallic nanoparticles reported in the literature.

Biosynthesis of Au and Ag–Au Bimetallic Nanoparticles by Pedicellamide for Catalytic Reduction of 4-Nitrophenol

2015 ◽  
Vol 9 (6) ◽  
pp. 460-464 ◽  
Author(s):  
Chandan Tamuly ◽  
Moushumi Hazarika ◽  
Manobjyoti Bordoloi
Keyword(s):  
Bimetallic Nanoparticles ◽  
Catalytic Reduction

Highly dispersed MnOx–FeOx supported by silicalite-1 for the selective catalytic reduction of NOx with NH3 at low temperatures

2020 ◽  
Vol 10 (16) ◽  
pp. 5525-5534 ◽  
Author(s):  
Jialiang Gu ◽  
Bingjun Zhu ◽  
Rudi Duan ◽  
Yan Chen ◽  
Shaoxin Wang ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Low Temperatures ◽  
Catalytic Reduction ◽  
Highly Dispersed ◽  
Reduction Of Nox

MnOx–FeOx-Loaded silicalite-1 catalysts exhibit high NOx conversion at low temperatures.

Transition-metal-free catalytic hydroboration reduction of amides to amines

2020 ◽  
Vol 7 (21) ◽  
pp. 3515-3520
Author(s):  
Wubing Yao ◽  
Jiali Wang ◽  
Aiguo Zhong ◽  
Shiliang Wang ◽  
Yinlin Shao
Keyword(s):  
Transition Metal ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Value Added ◽  
Metal Free

The selective catalytic reduction of amides to value-added amine products is a desirable but challenging transformation.

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