Article
Chemistry, Physical
Suphitsara Maturost, Suwaphid Themsirimongkon, Surin Saipanya, Li Fang, Natthapong Pongpichayakul, Jaroon Jakmunee, Paralee Waenkaew
Summary: Pd/xCuO-10CNT (x = 1, 2, 3, 4) catalysts synthesized using an improved polyol method exhibit excellent oxidation performance and electrocatalytic activity, along with stability and CO poisoning tolerance. The insertion of CuO onto the CNT surface provides additional electrochemical active sites, facilitating charge transfer.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Analytical
Suphitsara Maturost, Nathapong Pongpichayakul, Paralee Waenkaew, Napapha Promsawan, Suwaphid Themsirimongkon, Jaroon Jakmunee, Surin Saipanya
Summary: This paper presents a method for preparing an anode electrocatalyst for fuel cells, which shows promising potential for application in low-temperature fuel cells due to its high oxidation activity and durability. The new material was characterized and tested for performance, demonstrating improved catalytic activity and mass transfer efficiency for oxidations.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Vladislav S. Menshikov, Ivan N. Novomlinsky, Sergey V. Belenov, Anastasya A. Alekseenko, Olga I. Safronenko, Vladimir E. Guterman
Summary: Pt/(SnO2/C) catalyst is the most active among the studied catalysts in methanol and formic acid electrooxidation reactions; the nature of the reagent affects the rates of corresponding reactions; Cu atoms and SnO2 nanoparticles positively influence the catalytic activity of platinum.
Article
Chemistry, Multidisciplinary
Vera Haagen, Jakob Iser, Markus Schoerner, Dennis Weber, Tanja Franken, Peter Wasserscheid, Patrick Schuehle
Summary: This contribution presents a new efficient two-stage production route for green methanol from biomass. The hydrogenolysis step is focused on and a materials solution is proposed to solve the problem of catalyst corrosion caused by the acidic mixture formed in the previous biomass oxidation step. Cu0.9Al2O4 spinel materials are found to be effective catalysts with lower corrosion compared to commercial catalysts such as CuO/Cr2O3.
Article
Chemistry, Analytical
Mizaj Shabil Sha, Muni Raj Maurya, Mithra Geetha, Bijandra Kumar, Aboubakr M. Abdullah, Kishor Kumar Sadasivuni
Summary: Scientists have developed a simple and cost-effective colorimetric method to detect methanol, ethanol, and formic acid produced from electrochemical conversion of CO2. The method shows excellent selectivity and fast response time, making it a potential replacement for traditional heavy-duty instruments.
Article
Chemistry, Multidisciplinary
Shaolin Mu, Qiaofang Shi, Chong Chen, Xiangxiang Gong, Huaiguo Xue
Summary: A low-cost catalyst based on nano-polyaniline polymerized on graphite was reported for the electrochemical reduction of CO2 in CO2-saturated water free of supporting electrolytes. The nano-polyaniline electrode in this solution showed low resistance and low charge-transfer impedance, resulting in a high reduction current density and low overpotential. The only product formed during the reduction process was methanol, detected through H-1 NMR.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Natthapong Pongpichayakul, Suwaphid Themsirimongkon, Suphitsara Maturost, Kanlayawat Wangkawong, Li Fang, Burapat Inceesungvorn, Paralee Waenkaew, Surin Saipanya
Summary: Catalyst composites based on carbon loaded with Pt and CeO2 have been successfully prepared for methanol oxidation in direct-methanol fuel cells (DMFCs), showing enhanced catalytic performance and reduced CO poisoning by modifying carbon surfaces with CeO2 and Pt nanoparticles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Cagri Ceylan Kocak, Zekerya Dursun
Summary: In this study, modified copper phthalocyanine-carbon nanotube (CuPc-CNT) catalysts containing bimetallic and monometallic nanoparticles were prepared using an electrochemical technique. The bimetallic systems showed better performance for methanol oxidation in alkaline media compared to monometallic systems, with Au-Pt/CuPc-CNT demonstrating the highest stability and enhanced electrocatalytic activity.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Chemistry, Physical
Kaline Nascimento da Silva, Elton Sitta
Summary: This study observed and mapped for the first time the oscillatory methanol electrooxidation reaction on Pt(111) in non-adsorbing anion solutions and in the presence of small amounts of sulfate anions. The presence of sulfate strongly inhibits the reaction, possibly due to sulfate adlayer formation on {111} domains.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Xiaoying Mao, Yaping Zhang, Yun Xu, Yu Zhou, Ke Zhuang, Kai Shen, Shipeng Ding
Summary: In this study, a series of ZnZrOx catalysts with different ratios of vacancy oxygen to lattice oxygen were prepared using the solid phase milling approach. It was found that there is a linear relationship between lattice oxygen concentration and methanol selectivity, elucidating the key role of lattice oxygen in CO2 hydrogenation to methanol.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Xueyi Lu, Ziling Wang, Yang Yang, Shijun Liao, Xia Lu
Summary: This article presents heterostructured Pd/Ti/Pd bimetallic thin films as efficient electrocatalysts for proton exchange membrane fuel cells, demonstrating superior electrocatalytic activity towards the oxidation of methanol and formic acid. The materials show low onset oxidation potential, high current retention, and enhanced carbon monoxide poisoning resistance, suggesting their potential as promising materials for energy conversion in the fuel cell field.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Natthapong Pongpichayakul, Kanlayawat Wangkawong, Paralee Waenkaew, Li Fang, Burapat Inceesungvorn, Jaroon Jakmunee, Surin Saipanya
Summary: In this study, Pt-decorated cerium zirconium oxide-modified multiwalled carbon nanotubes (Pt/CeZrO4/MCNT) were prepared as alternative catalysts to improve the activity of the ethanol oxidation reaction (EOR) in direct ethanol fuel cells (DEFCs). The prepared catalysts showed excellent electrochemical performance and stability, making them promising materials for enhancing the anodic oxidation reaction in DEFCs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Rashmi Chetry, Bhugendra Chutia, Suranjana Patowary, Biraj Jyoti Borah, Putla Sudarsanam, Pankaj Bharali
Summary: In this study, a homogeneously embedded Pd2CuCo alloy in the carbon matrix was synthesized. The as-synthesized Pd alloy electrocatalyst exhibited an improved limiting current density, a smaller Tafel slope, and a comparable onset potential compared to Pt/C. Moreover, the Pd2CuCo alloy electrocatalyst also demonstrated excellent methanol tolerance, higher activity, and long-term stability toward the formic acid oxidation reaction compared to Pd/C.
Article
Chemistry, Physical
Xiaomei Ning, Liang Zhan, Xiaosong Zhou, Jin Luo, Yanli Wang
Summary: The addition of Bi3+ into the reaction solution dramatically improved the performances of glycerol electro-oxidation reaction (GOR) and formic acid electro-oxidation reaction (FAOR) catalyzed by Pt catalyst. The Bi-modified Pt exhibited enhanced resistance to CO poisoning, increased mass-specific activities and electrochemical active surface area (ECSA)-specific activity, as well as improved dehydrogenation process and electron pathway in FAOR and GOR, respectively.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Multidisciplinary
Mohammad Bagher Askari, Hadi Beitollahi, Antonio Di Bartolomeo
Summary: Recently, the synthesis of a three-component catalyst consisting of zirconium oxide (ZrO2), nickel oxide (NiO), and reduced graphene oxide (rGO) in the form of ZrO2/NiO/rGO has been achieved by a simple one-step hydrothermal method. The catalyst exhibited excellent methanol and ethanol electrooxidation abilities with high current densities and cyclic stabilities, making it an attractive option for anode materials in alcoholic fuel cells. The detailed characterization and electrochemical tests demonstrate the outstanding capability of this new nanocatalyst.
Article
Chemistry, Physical
Suphitsara Maturost, Suwaphid Themsirimongkon, Surin Saipanya, Li Fang, Natthapong Pongpichayakul, Jaroon Jakmunee, Paralee Waenkaew
Summary: Pd/xCuO-10CNT (x = 1, 2, 3, 4) catalysts synthesized using an improved polyol method exhibit excellent oxidation performance and electrocatalytic activity, along with stability and CO poisoning tolerance. The insertion of CuO onto the CNT surface provides additional electrochemical active sites, facilitating charge transfer.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Suwaphid Themsirimongkon, Suphitsara Maturost, Paralee Waenkaew, Napapha Promsawan, Natthapong Pongpichayakul, Jaroon Jakmunee, Surin Saipanya
Summary: This work aims to utilize mixed acids from biomass production as fuel for low-temperature fuel cells. Graphene oxide (GO) carrying Pt and Pd nanoparticles was used as a carbon support for catalyst fabrication to enhance the oxidation of various components of the mixed acids. The results indicate that GO/2Pt2Pd catalysts exhibited high activity and stability towards formic acid and the mixed acids in the biomass product.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
Piyanut Pinyou, Vincent Blay, Anyanee Kamkaew, Kantapat Chansaenpak, Sastiya Kampaengsri, Montathip Tongnark, Ichayapon Reesunthia, Tunjiranon Khonru, Jaroon Jakmunee
Summary: The study focuses on detecting xanthine using a modified electrode, which has potential applications in medicine and food freshness. The electrode contains xanthine oxidase and an Os-complex redox polymer on carbon nanotubes, allowing efficient electron transfer to the electrode surface even in air-saturated conditions. The performance of the sensor is affected by factors such as pH and ionic strength. Additionally, the study demonstrates the combination of the xanthine bioanode design and a glucose-based bi-enzymatic cathode, resulting in a promising self-powered xanthine biosensor.
Article
Chemistry, Multidisciplinary
Surin Saipanya, Paralee Waenkaew, Suphitsara Maturost, Natthapong Pongpichayakul, Napapha Promsawan, Surasak Kuimalee, Orapim Namsar, Kamolwich Income, Budsabong Kuntalue, Suwaphid Themsirimongkon, Jaroon Jakmunee
Summary: Pd-based catalysts consisting of Pd nanoparticles on nitrogen-doped carbon quantum dots (N-CQDs) modified silica (SiO2) and reduced graphene oxide have been synthesized through reduction for use as catalysts for improved formic acid oxidation. The electrocatalytic activities of these catalysts were significantly enhanced compared to commercial Pt/C, indicating their potential for the development of high-performance Pd-based electrocatalysts.
Article
Chemistry, Analytical
Chakkarin Maksuk, Chonnatee Tinala, Wasin Somboot, Jaroon Jakmunee, Frank Marken, Tinakorn Kanyanee
Summary: A rapid method for determining hydrogen peroxide using a non-enzymatic amperometric sensor with an online dialysis unit has been developed. This method allows for analysis of samples with complex matrices. By utilizing a porous gold modified gold screen-printed electrode, the method achieves a linear dynamic range from 10 to 1000 μmol L-1 with a limit of detection of 0.37 μmol L-1. The proposed system has been successfully applied to determine H2O2 in various milk samples, demonstrating rapid analysis, high electrode stability, and excellent repeatability (1.95% RSD with 100 replications).
Article
Electrochemistry
Paralee Waenkaew, Surin Saipanya, Suwaphid Themsirimonkon, Suphitsara Maturost, Jaroon Jakmunee, Natthapong Pongpichayakul
Summary: Recently, Pt-based catalysts on mixed carbon supporters have been introduced to enhance the formic acid oxidation (FAO) reaction. By combining carbon black and carbon nanotubes as a hybrid carbon support, the catalysts exhibited improved activities and stabilities. Among the prepared catalysts, PtPd/CB-CNT showed the highest current intensity and active surface area in the FAO reaction.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2022)
Article
Polymer Science
Surin Saipanya, Li Fang, Suwaphid Themsirimongkon, Suphitsara Maturost, Natthapong Pongpichayakul, Napapha Promsawan, Paralee Waenkaew
Summary: The aim of this research was to study the efficiency of PVA-modified GO as a supporting material for formic acid oxidation catalysts. The catalysts with PVA showed better dispersion and higher current density compared to the catalysts without PVA. The 3Pt3Pd/PVA/GO catalyst exhibited the highest catalytic activity, stability, and CO oxidation among all the catalysts.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Immunology
Supakeit Chanarsa, Jaroon Jakmunee, Kontad Ounnunkad
Summary: This study demonstrates the construction of a simple, reliable, and label-free immunosensor for the detection of Alpha-fetoprotein (AFP) on a smart phone. The modified electrode offers antibody immobilization and allows detection of AFP via an immunocomplex forming a sandwich-like configuration. The biosensor has potential for the development of a simple and robust point-of-care diagnostic platform for the clinical diagnosis of liver cancer, achieving a low limit of detection, high sensitivity, high selectivity, good stability, and excellent reproducibility.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Article
Multidisciplinary Sciences
Chattarika Sukpattanacharoen, Wasin Somboot, Jaroon Jakmunee, Tinakorn Kanyanee
Summary: A porous membrane-based diffusion scrubber coupled with a conductometric detector was developed as a flow-batch system for determining ammonium in turbid surface waters. The method utilized a gravity flow of DI water as absorbing liquid and manual sample introduction, resulting in a cost-effective device without the need for a conventional pump and an injection valve. The standard calibration graph showed a linear relationship in the range of 5-100 µmol/L with a relative standard deviation of less than 5%. The proposed method provided a detection limit of 5 µmol/L based on the lowest concentration in the calibration graph. The results obtained using the proposed method matched well with those using the batch-wise indophenol blue as a standard method. This analytical system offers a cost-effective setup and easy operation for ammonium determination in turbid surface water samples, eliminating the need for a filtering process and conventional glassware.
CHIANG MAI JOURNAL OF SCIENCE
(2022)
Article
Chemistry, Analytical
Maneerat Namjan, Natcha Kaewwonglom, Chonlada Dechakiatkrai Theerakarunwong, Jaroon Jakmunee, Wanpen Khongpet
Summary: The study proposes a microfluidic hydrodynamic sequential injection (HSI) system with a LED-phototransistor colorimetric detection system for the online determination of iron in water samples using Curcuma putii Maknoi & Jenjitt. extracts. The method demonstrates good performance with a linear calibration graph in the range of 0.5-6.0 mg L-1, a limit of detection at 0.11 mg L-1, and a sample throughput of 30 h(-1).
JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY
(2023)
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
Chemistry, Analytical
Chulalak Damphathik, Chomphunuch Songsiriritthigul, Jamras Lerdsri, Jaroon Jakmunee, Yutthana Wongnongwa, Siriporn Jungsuttiwong, Astrid Ortner, Kurt Kalcher, Anchalee Samphao
Summary: We developed a novel platform for the specific determination of aflatoxin B1 (AFB1) using carbon nanohorns decorated with a cobalt oxide composite and gold nanoparticles. The platform showed good sensitivity and selectivity, attributed to the specific binding property of the anti-aflatoxin B1 antibody. The sensor's accuracy was validated in real samples and it exhibited excellent performance for AFB1 detection, making it suitable for food quality control or detection of other mycotoxins.
Article
Chemistry, Physical
Piyanut Pinyou, Vincent Blay, Jaruwan Pansalee, Suthasinee Ramkrathok, Thanawan Phetmuenwai, Jaroon Jakmunee, Kantapat Chansaenpak, Sireerat Lisnund
Summary: This study developed a CPM electrochemical sensor based on a composite of rGO and AgNPs coated on a GCE, which showed excellent electrocatalytic activity and a linear response for CPM detection. The sensor was not significantly affected by potentially interfering species, making it suitable for measuring CPM in real samples.
Article
Biochemistry & Molecular Biology
Chanida Puangpila, Nattakritta Anukulkich, Siraphatsorn Chiapleam, Benyarat Intajan, Jaroon Jakmunee, Somkid Pencharee
Summary: A rapid and sensitive lateral flow assay using lectin Lens culinaris agglutinin (LCA) was developed for the detection of fucosylated alpha-fetoprotein (AFP-L3). The assay achieved quantitative detection of AFP-L3 within 10 minutes, with a low detection limit and good recovery for spiked human serum.
JOURNAL OF CELLULAR BIOCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Chonlada Bennett, Sawanya Ngamrung, Vithun Ano, Chanchai Umongno, Sugunya Mahatheeranont, Jaroon Jakmunee, Mudtorlep Nisoa, Komgrit Leksakul, Choncharoen Sawangrat, Dheerawan Boonyawan
Summary: The study compared the effects of pinhole plasma jet and gliding arc plasma in degrading the herbicide diuron in plasma activated solutions (PAS). The pinhole plasma jet system achieved over 50% degradation of diuron in 60 minutes, with pure Ar gas as the optimal plasma generation condition. The degradation products of diuron were identified via GC-MS. On the other hand, the gliding arc plasma system was not effective for herbicide degradation in PAS.