Article
Acoustics
Yuxin Yan, Sivakumar Manickam, Edward Lester, Tao Wu, Cheng Heng Pang
Summary: This study proposes an effective, sustainable and scalable ultrasound-assisted mechano-chemical cracking method to produce graphene oxide using miscanthus as a carbon precursor. The results show that the method can produce good quality and uniform graphene oxide, with potential for producing various graphene materials via a single-step method.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Maryam Babaei, Parviz Aberoomand Azar, Mohammad Saber Tehrani, Manoochehr Farjaminezhad, Syed Waqif Hussain
Summary: A green synthesized novel graphene/MnO2-QD nanocomposite was reported for removing heavy metal ions from water and wastewater samples. The nanocomposite components were successfully synthesized using green methods and characterized by various techniques. The method showed good repeatability and reproducibility for real sample analysis, effectively removing target heavy metals.
JOURNAL OF NANOSTRUCTURE IN CHEMISTRY
(2022)
Article
Chemistry, Analytical
Maryam Dehghani Soltani, Shayessteh Dadfarnia, Ali Mohammad Haji Shabani, Roya Afsharipour
Summary: A sensitive and non-toxic fluorescent nanoprobe was developed for the determination of sulfadiazine. It utilized a dispersive solid-phase extraction method and a magnetic nanocomposite sorbent for separation and preconcentration. The quantification of sulfadiazine was achieved by measuring the decrease in fluorescence of Ag2S@L-cysteine quantum dots. The proposed procedure exhibited good precision and a high sorption capacity.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Zolfaghar Aladaghlo, Siamak Javanbakht, Ali Reza Fakhari, Ahmad Shaabani
Summary: A novel sorbent, Fe3O4@GQD@GM, was designed and synthesized for trace determination of three tricyclic antidepressants. The proposed method showed excellent linearity, sensitivity, and repeatability under optimized conditions. This method was successfully applied for determination of the antidepressants in various biological samples.
Article
Engineering, Chemical
Rumwald Leo G. Lecaros, Andrea R. Matira, Lemmuel L. Tayo, Wei-Song Hung, Chien-Chieh Hu, Hui-An Tsai, Kueir-Rarn Lee, Juin-Yih Lai
Summary: In this study, a composite membrane of graphene oxide (GO) and oxygen-passivated graphene quantum dots (OGQDs) was prepared using a pressure-assisted self-assembly method. By adjusting the loading of OGQDs, the interlayer spacing between GO nanosheets was controlled. The introduction of OGQDs altered the channel structure of GO, resulting in increased water flux and reduced permeation of n-butanol molecules. The composite membrane showed excellent performance in n-butanol dehydration.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Fahimeh Kazeminava, Siamak Javanbakht, Mojtaba Zabihi, Mahmoud Abbaszadeh, Vahid Fakhrzadeh, Hossein Samadi Kafil, Zainab Ahmadian, Marjan Joulaei, Zahra Zahed, Alireza Motavalizadehkakhky, Zeinab Latifi, Hosein Eslami
Summary: In this study, antibacterial flexible hydrogel films were prepared by crosslinking biopolymer chitosan (CS) with silver-sulfur doped graphene quantum dots (Ag@S-GQD), which are among the most potent materials for wound dressing construction.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Malin G. Luedicke, Jana Hildebrandt, Christoph Schindler, Ralph A. Sperling, Michael Maskos
Summary: This study presents a new method for the purification of hydrophobic Quantum Dots, which utilizes a combination of solvent-induced adhesion and solid phase extraction techniques. The process is cost-effective and scalable, making use of common laboratory equipment and low-cost materials. The compatibility between surfactants, original medium, and extraction medium is clarified through phase diagrams and the solubility behavior of the Quantum Dots is considered using the Hansen solubility parameters framework to determine appropriate solvent types.
Article
Chemistry, Multidisciplinary
Shahla Ahmadian-Fard-Fini, Davood Ghanbari, Omid Amiri, Masoud Salavati-Niasari
Summary: This study focused on synthesizing photoluminescent nanoparticles for detecting toxic metal ions and Pseudomonas aeruginosa bacteria. By incorporating MgFe2O4 nanoparticles on carbon nano-templates and depositing photoluminescent carbon dots on the porous magnesium ferrite core, a composite with magnetic and photoluminescent properties was obtained. The results demonstrate an effective nanostructure for identifying toxic metal ions and bacteria.
Article
Chemistry, Multidisciplinary
Chun-Yan Shih, Wei-Lun Huang, I-Ting Chiang, Wu-Chou Su, Hsisheng Teng
Summary: Nitrogen-doped graphene oxide dots (NGODs) can serve as an efficient photosensitizer for Photodynamic therapy (PDT) by producing H2O2 under white-light irradiation in the presence of ascorbic acid (AA). The unique structure of NGODs restricts the transfer of photogenerated electrons for H2O2 production, showing high potential for effective and accurate deployment in PDT.
Article
Chemistry, Multidisciplinary
Molahalli Vandana, Hundekal Devendrappa, Paola De Padova, Gurumurthy Hegde
Summary: The influence of hydrothermally synthesized electrochemically active graphene quantum dots on the photocurrent sensitivity of conjugated polymer has been studied. A high-performance ultraviolet photodetector was fabricated by depositing a polypyrrole-graphene quantum dots active layer on an ITO electrode, and its time-dependent photoresponse was examined. The photoresponse of the device may have potential applications in optoelectronic devices.
Article
Energy & Fuels
Elmira Payami, Reza Teimuri-Mofrad
Summary: Graphene quantum dots were synthesized using citric acid and further modified with 4-ferrocenylbutanol to improve the electrochemical performance. Different compositions of nanocomposites were synthesized using varying amounts of CNT and Fe3O4. The final nanocomposite exhibited excellent battery-type capacity and high energy and power density, demonstrating its potential for energy storage applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Rania Adel, Shaker Ebrahim, Azza Shokry, Moataz Soliman, Marwa Khalil
Summary: In this study, nitrogen graphene quantum dots and copper indium sulfide/zinc sulfide quantum dots were synthesized and a fluorescent nanocomposite between them was developed for cholesterol detection. The nanocomposite showed high sensitivity and a wide linear range for cholesterol detection, making it a promising non-enzymatic optical biosensor.
Article
Agricultural Engineering
Wei Liu, Chenxi Ning, Ranran Sang, Qingxi Hou, Yonghao Ni
Summary: The study introduced a phosphorous acid-assisted hydrothermal process for the production of lignin-derived graphene quantum dots, which exhibit excellent photocatalytic degradation ability towards methylene blue and model lignin when used in a heterojunction structure. This research offers a universal strategy for the value-added utilization and valorization of lignin.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Chemistry, Multidisciplinary
Olawale Oloye, James D. Riches, Anthony P. O'Mullane
Summary: Room temperature liquid metals are being explored as sonochemical catalysts for the degradation of organic azo dyes, producing non-toxic solid carbon particles. The process can be repeated multiple times with the same catalyst to produce differently sized particles.
CHEMICAL COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
Camila C. Lopes, Wagner A. Pinheiro, Daniel Navarro da Rocha, Jose G. Neves, Americo Bortolazzo Correr, Jose R. M. Ferreira, Rafael M. Barbosa, Jefferson R. F. Soares, Jheison L. Santos, Marcelo H. Prado da Silva
Summary: In this study, hydroxyapatite-graphene oxide (HA-GO) nanocomposites were produced and the influences of different concentrations of GO on their morphological and physicochemical properties were observed. The results indicated that HA-GO nanocomposites exhibited good bioactivity properties and showed a high level of cell viability when the concentration of GO was increased. These findings suggest that HA-GO nanocomposites have potential as bioactive bone grafts and promising biomaterials for bone tissue regeneration, especially at higher concentrations of GO.
CERAMICS INTERNATIONAL
(2021)
Article
Multidisciplinary Sciences
Yonrapach Areerob, Chaowalit Hamontree, Phitchan Sricharoen, Nunticha Limchoowong, Supinya Nijpanich, Theeranuch Nachaithong, Won-Chun Oh, Kongsak Pattarith
Summary: A novel MoWO4 with ZnO nanoflowers was synthesized on multi-walled carbon nanotubes and used as a counter electrode for dye-sensitized solar cells for the first time. The synergetic effect of ZnO nanoflowers and MoWO4 on MWCNTs was investigated and optimized, resulting in a composite structure with the highest power conversion efficiency of 9.96%. Therefore, the MW-Z@MWCNTs-based CE shows potential to replace traditional Pt-based electrodes in the future.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
David Nugroho, Won-Chun Oh, Saksit Chanthai, Rachadaporn Benchawattananon
Summary: This study successfully synthesized carbon quantum dots (CQDs) from Magnolia Grandiflora flower, doped with hydrogen sulfide, and applied them for latent fingerprint detection. The results show that the S-CQDs have a promising potential as fluorescent probes for detecting minutiae latent fingerprints on non-porous surface materials.
Article
Biochemistry & Molecular Biology
Paweena Porrawatkul, Prawit Nuengmatcha, Arnannit Kuyyogsuy, Rungnapa Pimsen, Parintip Rattanaburi
Summary: This study investigated the production and characterization of zinc oxide nanoparticles (ZnO NPs) doped with sodium and aluminum metals for use in sunscreen. The results showed that the addition of sodium and aluminum metals increased the sun protection factor (SPF) of the sunscreen formulations and exhibited antibacterial and antioxidant activities.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2023)
Article
Multidisciplinary Sciences
Titiya Meechai, Thinnaphat Poonsawat, Nunticha Limchoowong, Sakchai Laksee, Peerapong Chumkaeo, Ranida Tuanudom, Artitaya Yatsomboon, Lalita Honghernsthit, Ekasith Somsook, Phitchan Sricharoen
Summary: The synthesis of Fe-SBA-15 was improved using gamma radiation-treated chitosan (Fe-gamma-CS-SBA-15) to investigate the removal of methylene blue dye in a single hydrothermal procedure. The Fe-gamma-CS-SBA-15 showed a large pore volume and surface area, and a maximum adsorption capacity of 176.70 mg/g for methylene blue. The study also confirmed that gamma-CS can enhance the performance of SBA-15 and the distribution of Fe and chitosan in the SBA-15 channels is uniform.
Article
Environmental Sciences
Wilaiwan Chaisorn, Piyawan Nuengmatcha, Amnuay Noypha, Rungnapa Pimsen, Paweena Porrawatkul, Arnannit Kuyyogsuy, Yanisa Thepchuay, Phitchan Sricharoen, Nunticha Limchoowong, Saksit Chanthai, Prawit Nuengmatcha
Summary: We synthesized a ?-irradiated chitosan-ZnO-AgNPs (ICZA) composite using hydrogels method and evaluated its adsorption, photocatalytic degradation, and antibacterial abilities. The obtained samples were characterized using XRD, SEM, TEM, EDS, and FTIR techniques. The ICZA showed high adsorption capacity and photocatalytic activity, with a maximum adsorption capacity of 92.59 mg/g and an apparent rate constant of 3.08 x 10(-2) under UV light. It also exhibited good antibacterial activity against Staphylococcus aureus, with a MIC and MBC of 12.5 g/mL and 50 g/mL, respectively. The hypothesized mechanism of its adsorption and photocatalytic activity, as well as antibacterial activity, was discussed.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Parintip Rattanaburi, Prawit Nuengmatcha, Rungnapa Pimsen, Paweena Porrawatkul
Summary: This paper presents the evaluation of carboxymethyl cellulose (CMC) as a chelating agent in the production of barium hexaferrite (BaFe12O19) using the sol-gel auto-combustion method. The synthesized nanoparticles are studied for their formation, morphology, and crystalline structure. The BaFe12O19 catalyst demonstrates high efficiency for dye degradation under visible light, with a band gap of 1.62 eV and a BET surface of 17.93 m(2)/g. Various operating parameters are investigated, and the BaFe12O19 catalyst shows excellent reusability for dye degradation. This study confirms that photocatalytic degradation is a promising technology for treating wastewater from textile dye industries.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Multidisciplinary Sciences
Yanisa Thepchuay, Nareerat Jommala, Tanakorn Wonglakhon, Prawit Nuengmatcha, Benjawan Ninwong, Naengnoi Saengsane, Phitchan Sricharoen, Nunticha Limchoowong
Summary: This contribution presents a novel method using silver nanoparticles (AgNPs) for simple and rapid colorimetric detection of Hg(II) and Fe(II) ions in real samples. The AgNPs were green-synthesized in aqueous solution using gamma-irradiated chitosan as a reducing and stabilizing agent. Under optimal conditions, the method exhibits good linearity and low limit of detections for Hg(II) and Fe(II) analyses. Tap waters spiked with both ions show high percentage recoveries and good precision. The developed method has potential for assessing Hg(II) and Fe(II) ions in real samples and can be used for the assessment of Fe(II) contents in pharmaceutical products.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Analytical
Wisarut Khamcharoen, Phichanan Duchda, Kriangsak Songsrirote, Nuanlaorr Ratanawimarnwong, Nunticha Limchoowong, Piyada Jittangprasert, Thitirat Mantim, Weena Siangproh
Summary: This study aimed to develop a miniaturized electrochemical platform for detecting As(iii) contamination in herbal medicines. By performing electrochemical measurements using a screen-printed graphene electrode and employing square wave anodic stripping voltammetry, the operational steps of modification and determination were reduced. The results showed that the electrochemical sensing system had the advantages of simple operation, rapid detection, portability, and low cost.
ANALYTICAL METHODS
(2022)
Article
Chemistry, Multidisciplinary
Yonrapach Areerob, Chaowalit Hamontree, Phitchan Sricharoen, Nunticha Limchoowong, Sakchai Laksee, Won-Chun Oh, Kongsak Pattarith
Summary: A novel gamma-irradiated chitosan-doped reduced graphene-CuInS2 composite was used as the counter electrode to address the issues associated with traditional counter electrodes. It exhibited higher photovoltaic efficiency compared to a Pt-based device.
Article
Chemistry, Multidisciplinary
Paweena Porrawatkul, Rungnapa Pimsen, Arnannit Kuyyogsuy, Nongyao Teppaya, Amnuay Noypha, Saksit Chanthai, Prawit Nuengmatcha
Summary: This study is the first to utilize Averrhoa carambola fruit extract as a reducing agent to synthesize Ag/ZnO composites for coating cotton fabric for antibacterial activity and UV protection. The research investigated the effects of silver nitrate concentration, applied power, reaction duration, and pH on nanoparticle yield. The treated cotton fabrics exhibited good antibacterial activity and excellent UV-blocking capacity.
Article
Chemistry, Multidisciplinary
Nipaporn Pimsin, Chayanee Keawprom, Yonrapach Areerob, Nunticha Limchoowong, Phitchan Sricharoen, Prawit Nuengmatcha, Won-Chun Oh, Saksit Chanthai
Summary: This study successfully synthesized N,S,I-GQDs and found them to exhibit high sensitivity and selectivity in detecting Fe2+.
Article
Materials Science, Ceramics
Natthida Lamaiphan, Chinawooth Sakaew, Phitchan Sricharoen, Prawit Nuengmatcha, Saksit Chanthai, Nunticha Limchoowong
Summary: In this study, thiol-functionalized graphene oxide-iron oxide (Fe3O4-GO-SH) nanocomposites were prepared and characterized for the simultaneous preconcentration and determination of heavy metal ions, such as Ag(I), Pb(II), and Cd(II), from water samples. The method showed high sensitivity and a wide linear range, making it suitable for the analysis of heavy metal ions in various types of water samples.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Amnuay Noypha, Yonrapach Areerob, Saksit Chanthai, Prawit Nuengmatcha
Summary: In this research, Fe2O3-graphene-Ag (FGA) was synthesized and found to exhibit good sonocatalytic activity in the degradation of methylene blue. The optimal degradation conditions were determined through investigating various experimental factors. The FGA showed higher sonocatalytic activity compared to other catalysts, making it a promising candidate for the removal of dye pollutants.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Phitchan Sricharoen, Saksit Chanthai, Natthida Lamaiphan, Chinawooth Sakaew, Nunticha Limchoowong, Prawit Nuengmatcha, Won-Chun Oh
Summary: This research focused on the preparation of amino-functionalized magnetic graphene oxide nanocomposite to increase the pre-concentration efficiency of Congo red residue in water samples. The developed method showed high precision and accuracy for the determination of trace amounts of residual dye in water samples.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2021)