Article
Nanoscience & Nanotechnology
Chandra Sekhar Yellatur, Raghavendra Padmasale, T. Maiyalagan, Subramanyam Sarma Loka
Summary: In this study, bimetallic Pt-Pd nanoparticles with good homogeneity were fabricated using a solution phase chemical reduction method and supported on rGO. The Pt-Pd/rGO catalyst exhibited higher activity and stability towards ethanol electrooxidation reaction under acidic conditions, indicating its great potential for practical applications.
Article
Chemistry, Physical
Mohammad Zhiani, Marzieh Gholamian, Saeid Barzi
Summary: Palladium nanoparticles were successfully electrodeposited on a reduced graphene oxide/poly(melem-formaldehyde) nanocomposite as a catalyst for ethanol electrooxidation. The increased nitrogen doping and structural defects in the nanocomposite improved the dispersion and anchoring of Palladium nanoparticles, enhancing the catalytic performance. This study also provided a superior graphene-based material for direct ethanol fuel cell anode catalysts applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Multidisciplinary Sciences
S. K. Safdar Hossain
Summary: This study synthesized different catalysts and found that Pd3Fe/N-rGO exhibited superior electrocatalytic activity and stability. It also showed higher mass activity in HCOOH and H2SO4 solutions, indicating its potential as an electrocatalyst for formic acid oxidation.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Physical
Rodolfo M. Antoniassi, Heiki Erikson, Jose Solla-Gullon, Roberto M. Torresi, Juan M. Feliu
Summary: The study demonstrates that deposition of Pd on small supported Pt materials leads to enhanced electrocatalytic activity for formic acid electrooxidation, with lower overpotentials and higher oxidation current densities. The intrinsic activity after Pd decoration is significantly increased, while the oxidation overpotential is shifted to lower values by around 200 mV.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Inorganic & Nuclear
Suwaphid Themsirimongkon, Kullapa Chanawanno, Paralee Waenkaew, Suphitsara Maturos, Nathapong Pongpitchayakul, Li Fang, Jaroon Jakmunee, Surin Saipanya
Summary: Enhanced electrocatalysts for formic acid oxidation reaction (FAOR) were prepared by constructing N-doped graphene oxide hybrid materials and loading electrodeposited Pd nanoparticles onto the prepared GO-xFBOPHY (x = wt%) support surfaces. The morphology of the prepared catalysts was characterized by TEM, and the phase and chemicals were determined by XRD and XPS, respectively. The electrocatalytic activity and stability of the catalysts were measured by CV and CA. The results showed that GO-2FBOPHY/Pd exhibited excellent catalytic performance for FAOR, with large active surface area (ECSA = 117.2 m(2)/g), high specific activity (8.53 mA cm(-2)), long-term stability (0.113 mA cm(-2) at potential 0.20 V), and fast electron transfer (charge-transfer resistance 1353 Omega). GO-xFBOPHY/Pd weakened the COads bond strength on Pd nanoparticles at a negative onset potential (0.60 V) compared to GO/Pd (0.66 V). These prepared catalysts could improve anodic oxidation and be used in direct formic acid fuel cells.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Zi-Xin Ge, Bo-Qiang Miao, Xin-Long Tian, Bin He, Yu Chen
Summary: In this study, the commercial Pt/C electrocatalyst was chemically functionalized with 1,10-phenanthroline (PL), which effectively isolated the continuous Pt atoms and significantly enhanced the electrocatalytic performance for formic acid electrooxidation reaction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Paralee Waenkaew, Surin Saipanya, Suphitsara Maturost, Suwaphid Themsirimongkon, Runglawan Somsunan, Napapha Promsawan
Summary: A catalyst composed of PAMPs-modified GO as the supporting material and Pt and/or Pd as the active catalytic component was found to enhance the formic acid oxidation reaction. The 3Pt3Pd/10%PAMPs/GO catalyst exhibited the highest catalytic activity, stability, and charge transfer kinetics among all the tested catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Mohamad Fahrul Radzi Hanifah, Juhana Jaafar, M. H. D. Othman, A. F. Ismail, M. A. Rahman, N. Yusof, Wan Norharyati Wan Salleh, Farhana Aziz, Amy Zuria Abdul Ajid
Summary: A facile, rapid, green, and novel clean synthesis method was successfully developed to prepare advanced RGO/bimetallic Pt-Pd alloy/CeO2 nanocomposite electrocatalyst with enhanced electrocatalytic performance for methanol oxidation reaction. The as-prepared electrocatalyst exhibited outstanding electrocatalytic performance, high stability, and exceptional poisoning tolerance, showing potential for large-scale production of an advanced anode electrocatalyst for direct methanol fuel cell application.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Applied
Oana Grad, Maria Mihet, Maria Coros, Monica Dan, Mihaela D. Lazar, Gabriela Blanita
Summary: This study introduced a simple method to prepare PdAu alloyed nanoparticles supported on reduced graphene oxide, and found that the presence of Au can influence the formation, dispersion, and catalytic properties of the nanoparticles. The bimetallic PdAu/rGO catalyst exhibited superior activity and lower activation energy compared to the Pd/rGO catalyst in formic acid decomposition reactions.
Article
Chemistry, Analytical
Hossam M. Nassef, Ali H. Bashal, Abdelhameed M. Othman
Summary: In this study, a Cu-TiO2-NAF nanocomposite grafted onto a Pt electrode was used as a probe for differential pulse voltammetric analysis of formic acid. The optimal conditions for analysis were determined, and the method was found to be selective and sensitive. The probe was successfully applied to the determination of formic acid in water and milk samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Ke Huang, Kihyun Shin, Graeme Henkelman, Richard M. Crooks
Summary: The method allows for synthesizing and studying shape-controlled single Pt nanoparticles supported on carbon nanoelectrodes. It enables direct correlation of experimental results to first-principles theory, avoiding the difficulty of analyzing an ensemble of nanoparticles with different sizes and structures.
Article
Environmental Sciences
Bathinapatla Sravani, S. Kiranmai, Gutturu Rajasekhara Reddy, Jong Pil Park, Y. VeeraManohara Reddy, G. Madhavi
Summary: A high-performance electrochemical sensor for regorafenib detection was developed using bimetallic Pd-Ru nanoparticles anchored on reduced graphene oxide derived from pomegranate peel extract. The sensor exhibited good electrocatalytic activity and detection range, as well as excellent selectivity and sensitivity in real sample analysis. This strategy could be applied for the development of electrochemical sensors for other target analytes.
Article
Energy & Fuels
Binfeng Shen, Haitao Yao, Haiyan He, Huajie Huang
Summary: In this study, a bottom-up strategy was successfully employed to anchor ultrasmall Pt nanocrystals onto carbon nanohorn-decorated three-dimensional graphene networks, resulting in Pt/CNH-G catalysts with exceptional performance. These catalysts demonstrated distinctive architectural advantages, including porous frameworks, large surface areas, highly dispersed Pt nanoparticles, and good electron conductivity. The optimized Pt/CNH-G catalyst exhibited outstanding methanol oxidation properties and long-term stability, surpassing conventional Pt catalysts supported by other carbon materials.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Chemistry, Applied
Kannan Badri Narayanan, Gyu Tae Park, Sung Soo Han
Summary: The development of graphene-polyiodide nanocomposites by utilizing soluble starch biopolymer as a functionalizing and reducing agent has shown to be effective in creating nanomaterials with superior antibacterial properties for food packaging applications. The nanocomposites exhibited good antibacterial activities against E. coli and S. aureus, showcasing potential as high-efficacy antibacterial starch-based nanomaterials.UV-visible spectroscopy, X-ray diffraction, Raman spectroscopy, scanning electron microscopy, and energy-dispersive spectroscopy were used to confirm the presence of polyiodide in the starch-reduced graphene oxide.
Article
Chemistry, Physical
Ahmed O. Elnabawy, Jeffrey A. Herron, Zhixiu Liang, Radoslav R. Adzic, Manos Mavrikakis
Summary: The study presents a density functional theory analysis of the electrooxidation of formic acid on different metal surfaces modified by Pt or Pd monolayers, revealing that structure sensitivity plays a significant role in the reactivity. Pt*/Au(111) is predicted to be the most active surface due to its superior ability to activate water to form OH* and remove CO* at lower potentials compared to other surfaces.
