Article
Chemistry, Inorganic & Nuclear
B. Usharani, V. Manivannan
Summary: The rGO-TiO2 nanocomposite was synthesized through a hydrothermal method and characterized using various analytical and spectroscopic techniques. The findings indicate that rGO-TiO2 exhibits excellent photocatalytic performance, with the highest degradation efficiency observed under visible light and sunlight.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Huihui Deng, Cunqi Qin, Kemei Pei, Guoyong Wu, Mei Wang, Huagang Ni, Peng Ye
Summary: In the catalytic process of semiconductors, the rapid recombination of electron-holes greatly reduces the catalytic activity. A low-defect reduced hydroxylated graphene (RGOH) was used as a carrier material to prepare TiO2/reduced hydroxylated graphene (T/RGOH) nanocomposite photocatalyst, which showed a higher degradation efficiency for methylene blue compared to pure TiO2 and TiO2/reduced graphene oxide (T/RGO) nanocomposite photocatalysts. The enhanced performance was attributed to the higher electrical conductivity of RGOH and the existence of Ti-O-C bonds in the T/RGOH, which improved electron-hole separation and prevented rapid recombination.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
S. Kiranmai, Charan Kuchi, Bathinapalta Sravani, Teresa Luczak, Myung Jong Kim, G. Madhavi, Y. Veera Manohara Reddy
Summary: A facile sensing platform using titanium dioxide-reduced graphene oxide nanofibers was developed for the accurate detection of epinephrine in biological fluids and pharmaceutical drugs.
SURFACES AND INTERFACES
(2022)
Review
Engineering, Chemical
Caique Prado Machado de Oliveira, Inara Fernandes Farah, Konrad Koch, Joreg E. Drewes, Marcelo Machado Viana, Miriam Cristina Santos Amaral
Summary: Membranes modified with nanocomposites offer improved performance in membrane separation processes, with additional advantages such as photocatalytic activity. TiO2-graphene oxide nanocomposites show promise in enhancing membrane hydrophilicity, inducing antimicrobial activity, and reducing fouling potential.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Eric R. Halabaso, Pooja Somnath Dayma, Jonathan W. L. Salvacion, Ruey-an Doong
Summary: Copper tungstate (CuWO4) decorated 2-dimensional reduced graphene oxide (CWO/rGO) nanocomposite with large specific surface area and abundant mesopores was synthesized and used for capacitive deionization (CDI). The CuWO4 provides electroactive sites and the rGO enhances electric conductivity and offers mesoporous channels for electrosorption of ions. The CWO/rGO exhibits high specific capacitances, specific electrosorption capacity, charge efficiency, low energy consumption, and long-term stability, making it a potential material for brackish water desalination.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Optics
Abdullah A. Manda, Shamsuddeen A. Haladu, Khaled A. Elsayed, Umar Ibrahim Gaya, Muidh Alheshibri, Abbad Al Baroot, Emre Cevik, Filiz Ercan, T. S. Kayed, Saminu Musa Magami, Nafala A. Altamimi, Ismail Ercan
Summary: Laser synthesis is an efficient method for synthesizing nanomaterials, and this study focuses on the synthesis of ZnO-TiO2 and ZnO-TiO2-reduced graphene oxide (ZT-rGO) nanocomposites using pulse laser ablation. The addition of rGO loading enhances the crystalline nanostructures, thermal stability, and the removal of methylene blue dye. The ZT-rGO 5% nanocomposite shows the best photocatalytic activity, and the nanocatalysts achieve 98.5% MB removal within 30 minutes. The laser ablation technique shows great potential for the fabrication of ZT-rGO nanocomposites and efficient decolorization of wastewater.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
R. Ranjith, S. Ravikumar, V Pandiyan, Umamaheswari Rajaji, Khamael M. Abualnaja, Taghrid S. Alomar, Najla AlMasoud, Mohmed Ouladsmne
Summary: TiO2-Co3O4 and TiO2-Co3O4/graphene oxide nanocomposites were successfully prepared and utilized for the degradation of organic pollutants in this study. The GTC catalyst showed complete degradation of organic dyes under light irradiation, indicating a significant enhancement in photocatalytic activity compared to TC.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
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
Green & Sustainable Science & Technology
Kamal Mohammed Jihad, Mahmood Rezaee Roknabadi, Mojtaba Mohammadi, Elaheh K. Goharshadi
Summary: This study investigates the synthesis and characterization of reduced graphene oxide/titanium dioxide/nickel ferrite nanocomposites and evaluates their photocatalytic and antibacterial activity. The GTN211 nanocomposite with a mass ratio of 2:1:1 for rGO:TiO2:NiFe2O4 demonstrates the best photocatalytic performance and antibacterial activity, making it a promising material for environmental remediation and biomedical applications. The study also reveals the main active species in the photodegradation process.
SUSTAINABLE ENVIRONMENT RESEARCH
(2023)
Article
Environmental Sciences
Monika Patel, Neha Bisht, Priyanka Prabhakar, Raj Kumar Sen, Pradip Kumar, Neeraj Dwivedi, Mohammad Ashiq, D. P. Mondal, Avanish Kumar Srivastava, Chetna Dhand
Summary: We developed an effective electrochemical sensor using a ternary nanocomposite of reduced graphene oxide functionalized with polydopamine and alanine for simultaneous detection of four heavy metal ions (Cd2+, Pb2+, Fe2+, and Cu2+). The sensor exhibited high sensitivity and low interference in detecting the targeted heavy metal ions in water and soil samples with detection limits and sensitivities provided.
ENVIRONMENTAL RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Zongwei Guo, Zhao Wang, Jiajun Ma, Lin Jin, Yuhui Ao
Summary: Introducing two-dimensional nanoreinforced materials on the surface of carbon fibers is a promising strategy to overcome their chemical inertness. In this study, graphene oxide functionalized MXene was used to produce intercalated reinforcement materials with robust Ti-O-C covalent bonds, resulting in a more ordered and compact brick-and-mortar structure on the carbon fiber surface. The optimal carbon fiber composites achieved high strength and toughness with enhanced interlaminar shear and flexural strengths, expanding their applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Cornelia Bandas, Mina Ionela Popescu, Corina Orha, Mircea Nicolaescu, Aniela Pop, Carmen Lazau
Summary: A hybrid electrode structure of titanium/titanium dioxide/reduced graphene oxide was successfully developed using spin-coating technique. The structure was characterized using various techniques and its electrochemical behavior was assessed. The potential application of the hybrid electrode in drug detection from wastewater was demonstrated.
Article
Polymer Science
Sachin Sharma Ashok Kumar, Nujud Badawi Mohammed, Osamah Alduhaish, Kasi Ramesh, Subramaniam Ramesh, Mujeeb Khan, Baji Shaik, Syed. F. Adil
Summary: The researchers fabricated graphene/TiO2-based nanocomposite coating systems by adding TiO2 nanoparticles into the acrylic-epoxy polymeric matrix. The properties of the coatings were investigated using various testing methods. The results showed that the TiO2 nanoparticles were successfully decorated on the graphene surface and exhibited good dispersibility and uniform distribution within the polymeric matrix.
Article
Chemistry, Multidisciplinary
Anthony P. Straub, David S. Bergsman, Bezawit A. Getachew, Liam M. Leahy, Jatin J. Patil, Nicola Ferralis, Jeffrey C. Grossman
Summary: The fabrication of electrically conductive membranes using laser-reduced graphene oxide shows promise in reducing water treatment costs and efficient removal of water contaminants. Tuning the laser-reduced GO membranes with additional binding molecules can further decrease the sheet resistance for improved performance.
Article
Chemistry, Physical
Alekha Tyagi, Yaswanth K. Penke, Prerna Sinha, Iram Malik, Kamal K. Kar, Janakarajan Ramkumar, Hiroyuki Yokoi
Summary: The Al-substituted MnFe2O4-based ternary oxide and reduced graphene oxide (MAF-RGO) nanocomposite synthesized through in-situ co-precipitation and hydrothermal methods shows excellent ORR electrocatalytic performance in alkaline electrolyte. MAF-RGO demonstrates high ORR onset potential and good stability, indicating its potential as a high-performance ORR-active system.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Zahra Goharibajestani, Alp Yurum, Yuda Yurum
APPLIED SURFACE SCIENCE
(2019)
Article
Chemistry, Physical
Rehman Yousuf Azeemi, Ridvan Ergun, Adnan Tasdemir, Selmiye Alkan Gursel, Alp Yurum
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Energy & Fuels
Aysu Yurdusen, Alp Yurum, Yuda Yurum
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2020)
Article
Chemistry, Physical
Aysu Yurdusen, Alp Yurum, Yuda Yurum
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Physical
Naeimeh Rajabalizadeh Mojarrad, Bilal Iskandarani, Adnan Tasdemir, Alp Yurum, Selmiye Alkan Gursel, Begum Yarar Kaplan
Summary: Novel nanofiber-based hybrid proton conducting membranes were fabricated using electrospinning method, with P(VDF-TrFE) as the carrier polymer. The membranes showed superior proton conductivity compared to membranes with PVDF carrier polymer under the same conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Adnan Tasdemir, Buse Bulut Kopuklu, Ahmet Can Kirlioglu, Selmiye Alkan Gursel, Alp Yurum
Summary: A simple method has been developed to fabricate reduced graphene oxide and nitrogen-doped reduced graphene oxide with remarkable lithium-ion storage properties. Nitrogen-doped reduced graphene oxide showed better cycling stability and higher reversible capacity at high current densities compared to reduced graphene oxide.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Emre B. Boz, Adnan Tasdemir, Emre Bicer, Alp Yurum, Selmiye Alkan Gursel
Summary: Hierarchically porous materials have been developed as catalyst supports for oxygen reduction reaction in acidic media through the introduction of graphene oxide and pyrolyzed hybrid structure, leading to improved catalytic performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Nanoscience & Nanotechnology
Buse Bulut Kopuklu, Ekin Esen, Aurora Gomez-Martin, Martin Winter, Tobias Placke, Richard Schmuch, Selmiye Alkan Gursel, Alp Yurum
Summary: This study demonstrates for the first time that electrochemical prelithiation of Fe3O4@PrGO electrodes can improve the performance of full cells, reduce active lithium losses, and prolong cycle life.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Bilal Iskandarani, Naeimeh Rajabalizadeh Mojarrad, Alp Yurum, Selmiye Alkan Gursel, Begum Yarar Kaplan
Summary: This study developed a fiber-based P(VDF-TrFE)/Pt/C/S-SiO2 cathode which demonstrated promising fuel cell performance at low Pt loadings, showing potential for applications under partially humidified conditions.
Article
Energy & Fuels
Ismail Butun, Ghazaleh Gharib, Alp Yurum, Selmiye Alkan Gursel, Ali Kosar
Summary: Electricity-generating devices have become popular in recent years due to increasing global energy requirements. Researchers have developed a polymer-based energy generator that imitates electro-receptive animals and utilizes electrochemical reactions between metals and polymers. This bioinspired device offers high voltage output and has the potential to be used as a power source for small-scale electrical systems and personal energy needs.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Vahid Charkhesht, Begum Yarar Kaplan, Selmiye Alkan Gursel, Alp Yurum
Summary: For the first time, the electrospinning of nanotubular structures was developed for Li-ion battery applications. Synthesized titania-based nanotubular materials were modified and then electrospun with PVDF to obtain a self-standing electrode. The investigation on the effects of thermal treatment temperatures and durations revealed that a sample treated for 10 hours exhibited the fastest charge transfer kinetics. The optimized electrospun electrode, embedded with nanotubes, showed promising results in terms of capacity and energy density.
Article
Chemistry, Multidisciplinary
Mohammed Ahmed Zabara, Begum Yarar Kaplan, Selmiye Alkan Gursel, Alp Yurum
Summary: This study demonstrates a simpler two-step synthesis technique for the preparation of well-specified morphology TiO2 nanocrystals and investigates their photoelectrochemical properties. The findings show that {100} and {001} facets in cubic morphology facilitate the electrodeposition of Cu2+ ions, while the {101} facet in octahedral geometry is more conducive to the electrodeposition of Pb2+ ions. Additionally, the octahedron nanostructure exhibits the highest electroreduction activity in Pb2+ electrodeposition due to the alignment of the reduction potential to the edge of the flat band.
ADVANCED MATERIALS INTERFACES
(2023)
Review
Chemistry, Physical
Begum Yarar Kaplan, Ahmet Can Kirlioglu, Mohammad Alinezhadfar, Mohammed Ahmed Zabara, Naeimeh Rajabalizadeh Mojarrad, Bilal Iskandarani, Alp Yurum, Cengiz Sinan Ozkan, Mihrimah Ozkan, Selmiye Alkan Gursel
Summary: The pressure to develop better green hydrogen energy sources with higher efficiency, extended durability, and lower cost is driving the need for deep decarbonization. Electrolysis shows promise for green hydrogen production, but there are several challenges that need to be overcome. Operando techniques, such as infrared, Raman, X-ray absorption, photoelectron, and electrochemical impedance spectroscopy methods, offer in situ monitoring and real-time observation of water electrolysis, providing insights into reaction mechanisms, structural changes, ionic conductivity, transport properties, and degradation mechanisms. This article discusses the current progress, limitations, and future directions in operando analysis of electrolysis for hydrogen production.
Article
Energy & Fuels
Ayca Yigitalp, Adnan Tasdemir, Selmiye Alkan Gursel, Alp Yurum
Article
Chemistry, Multidisciplinary
Aysu Yurdusen, Alp Yurum, Yuda Yurum
