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
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
Chemistry, Physical
Suphitsara Maturost, Suwaphid Themsirimongkon, Paralee Waenkaew, Napapha Promsawan, Jaroon Jakmunee, Surin Saipanya
Summary: The research on electrocatalytic oxidation of methanol, ethanol, and formic acid using a nanocomposite catalyst consisting of multi-wall carbon nanotubes, copper oxide, and platinum nanoparticles has shown promising results in improving low-temperature fuel cell applications. The addition of copper oxide significantly enhances the electroactivity towards oxidation reactions, making the 1Pt-3CuO/CNT electrocatalyst a capable candidate for fuel cell applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
M. Selim Cogenli, Ayse Bayrakceken Yurtcan
Summary: Supported catalysts are widely used in fuel cells, and platinum nanoparticles are preferred as they have superior properties. Carbon black has commonly been used as a support material, but it is easily affected by the operating conditions. Graphene aerogels (GA) have recently been discovered to be important graphene-based materials in nanotechnology and are being investigated as support materials. In this study, carbon black was used together with GA and heteroatom-doped GA to synthesize three different hybrid carbon-supported Pt nanoparticles. The Pt/BGA-C catalyst showed the highest catalytic activity for both formic acid and methanol oxidation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(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
Chemistry, Physical
Yufei Bao, Ligang Feng
Summary: Direct formic acid fuel cells involve significant half-reactions of formic acid electro-oxidation and oxygen reduction reaction. The use of PdNi alloy on 3D graphene aerogel (PdNi/GA) as catalyst demonstrated enhanced formic acid oxidation ability. This catalyst showed superior catalytic performance compared to traditional Pd/GA and Pd/C catalysts, indicating its potential for application in fuel cells.
ACTA PHYSICO-CHIMICA SINICA
(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
Jooyoung Kim, Hyunki Kim, Sungjun Kim, Jue-Hyuk Jang, Hyuntae Sohn, Seok Jin Hong, Junhyeong Kim, Gyeong Ho Han, Seonghyun Choe, Yung-Eun Sung, Soo Young Kim, Ho Won Jang, Tae Hwan Jo, Hyung-Kyu Lim, Sung Jong Yoo, Sang Hyun Ahn
Summary: This study presents a simple electrochemical strategy to fabricate atomic Pt clusters on Au dendrites, resulting in a significantly reduced Pt loading. The prepared Pt/Au/CP sample exhibits high selectivity for formic acid oxidation reaction and maintains stable activity even after cycling tests.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Damin Zhang, Jia Du, Jonathan Quinson, Matthias Arenz
Summary: Research on the electrocatalytic oxidation of small organic compounds aims at their application in direct methanol or formic acid fuel cells as alternatives to hydrogen-fueled fuel cells. Fundamental research involves screening catalyst materials and investigating reaction mechanisms. A gas diffusion electrode setup developed for studying oxygen reduction and water splitting has been demonstrated to be suitable for evaluating catalysts for the electro-oxidation of small organic molecules under conditions simulating low temperature proton exchange membrane fuel cells.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Jialing Xu, Yawen Li, Xiaofen Chen, Guifang Li, Jiaqi Huo, Lishan Jia
Summary: Researchers have successfully constructed Ni@0.20RGO nanomaterial with excellent catalytic performance for dehydrogenation of formic acid to hydrogen at near room temperature. This catalytic performance is comparable to some of the most active non-noble metal catalysts, providing new possibilities for promoting the development of clean energy technologies.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
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, Multidisciplinary
Ruixue Feng, Dong Li, Hongzhou Yang, Chengyu Li, Yunxuan Zhao, Geoffrey I. N. Waterhouse, Lu Shang, Tierui Zhang
Summary: In this study, a low-cost Pt atomic layers catalyst was successfully prepared on a CrN substrate via thermal ammonolysis method. The catalyst exhibited excellent activity and durability, making it suitable for various applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Wibawa Hendra Saputera, Tze Hao Tan, Emma C. Lovell, Aditya Rawal, Kondo-Francois Aguey-Zinsou, Donia Friedmann, Rose Amal, Jason A. Scott
Summary: Binary TiO2/SiO2 oxides were synthesized as supports for a Pt catalyst, with varying mole ratios of silica. Increasing the TiO2 : SiO2 ratio led to changes in specific surface area, crystal structure, and defect sites, affecting the catalytic performance for formic acid oxidation under dark conditions and following UV light pre-treatment. The Pt/1TiO(2)-2SiO(2) catalyst exhibited the highest catalytic rate, attributed to the simultaneous presence of PtOads and defect sites following UV-light pre-treatment.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Nicole Smina, Adam Rosen, Lukasz Sztaberek, William Beatrez, Kathryn Kingsbury, Rosario Troia, Yongchen Wang, Jing Zhao, Joshua Schrier, Christopher Koenigsmann
Summary: The study utilizes PtAu alloy nanowires as catalysts to suppress the generation of carbon monoxide by controlling the Au content, thereby improving the oxidation efficiency of small organic molecules.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Yu-hong Li, Hao-chang Deng, Zi-han Zhou, Ping-ping Yang, Jun-jie Fei, Yi-xi Xie
Summary: In this study, dendritic carbon nanofibers loaded with Pd12Ag1 nanoalloy were prepared as a catalyst using a one-pot method. The Pd12Ag1/CNFs catalyst showed the best performance for formic acid oxidation, with significantly improved catalytic activity and durability compared to commercial Pd/C. The effect of different carbon materials and doped metals on the overall catalyst was confirmed using density functional theory simulations.
APPLIED SURFACE SCIENCE
(2023)
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
Chutikarn Khamkhajorn, Somkid Pencharee, Jaroon Jakmunee, Napaporn Youngvises
Summary: A universal clamp sample holder was designed and fabricated for smartphone-based colorimetric determination of sulfites in wine using a microfluidic cotton swab-based analytical device. The method involves converting sulfite to volatile SO2, which reacts with Fe(III) to form a red complex. The mu CSAD is cost-effective and eco-friendly, with a mobile software application for calibration and sulfite concentration evaluation.
MICROCHEMICAL JOURNAL
(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
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.
Article
Chemistry, Analytical
Patrawadee Yaiwong, Chutiparn Lertvachirapaiboon, Kazunari Shinbo, Keizo Kato, Kontad Ounnunkad, Akira Baba
Summary: In this study, the SPR-enhanced fluorescence properties of AuQDs on an Al-coated PDMS grating substrate were investigated by changing the grating pitch through mechanical stretching. The results showed that stretching the grating substrate can tune the SPR excitation wavelength and enhance the fluorescence intensity, which is promising for applications in tunable optical sensors.
ANALYTICAL METHODS
(2022)
