Article
Chemistry, Physical
Indu Kaushal, Vinit Kumar, Priya Saharan, Alok Mittal, Ram Bhagat, Surender Kumar, Ashok K. Sharma
Summary: A hydrothermal methodology followed by calcinations was employed to prepare a CeO2-MnO2/CNF composite with superior electrochemical energy storage and sensing performance. The composite exhibited efficient hybrid sensing and electrode properties due to the growth of agglomerated CeO2 clusters with needle-shaped MnO2 decorated on the CNF surface. The surface structure and chemical features of the nanocomposite were characterized, and the XRD analysis confirmed the crystalline phase of CeO2-MnO2 on CNF. The synthesized composite showed specific capacitance, capacitive retention, energy density, and power density values, indicating its potential as an electrode material. Furthermore, the composite displayed good sensitivity and low detection limit when tested as a sensing material for H2O2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Nicolas Perciani de Moraes, Lucca Gabriel Penida Marins, Marcelo Yuji de Moura Yamanaka, Rebeca Bacani, Robson da Silva Rocha, Liana Alvares Rodrigues
Summary: This paper investigated the development of a new zinc oxide/zinc sulfide/carbon xerogel composite photocatalyst for efficient degradation of 4-chlorophenol under solar light. The ternary composite showed the best photocatalytic response among tested materials, likely due to the formation of heterojunctions and enhanced morphological properties. Further, the XC/ZnO-ZnS composite exhibited the highest photocurrent generation in chronoamperometry tests.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Energy & Fuels
Nurizan Omar, Ezzat Chan Abdullah, Arshid Numan, Nabisab Mujawar Mubarak, Mohammad Khalid, Siti Rahmah Aid, Elochukwu Stephen Agudosi
Summary: This study reports a novel binary composite material BCWR derived from watermelon rind, which can serve as an electrode for supercapacitors, and optimized the synthesis process parameters such as pyrolysis temperature, pyrolysis time, and biomass to metal oxide ratio. The experimental validation shows that BCWR has the potential to be a superior electrode material for energy storage applications.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Nanoscience & Nanotechnology
Changhua Yang, Yanan Wu, Min Nie, Qi Wang, Yuansen Liu
Summary: In this study, interlocking interfaces were successfully constructed in a polyurethane conductive composite by introducing zinc oxide nanowires with brush-like carbon fibers, greatly improving the mechanical strength and conductive stability of the material. High mechanical strength and stable conductivity were demonstrated in the composite, and the novel stretchable conductor showed potential applications in thermal therapy units and flexible circuits.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Afifah Salma Giasari, Anissya Putri Maharani Muharam, Anung Syampurwadi, Diana Rakhmawaty Eddy, Indah Primadona
Summary: The morphological properties of ZnO nanostructures such as nanorods, nanowires, and nanotubes can significantly affect their photocatalytic performance. In this study, the physical properties (optical and shape) of different 1-D ZnO nanostructures were evaluated in relation to their photocatalytic efficiency. ZnO nanorods transformed into nanowires under reduced seeding precursor concentration and into nanotubes with prolonged incubation time. The highest photocatalytic efficiency was observed in ZnO nanotubes, followed by ZnO nanowires and nanorods. The enhanced efficiency of ZnO nanotubes was attributed to their large polar face, high UV absorption, and large photocurrent density.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Environmental Sciences
Nicolas Perciani de Moraes, Abner de Siervo, Taynara Oliveira Silva, Robson da Silva Rocha, D. Amaranatha Reddy, Yu Lianqing, Marcos Roberto de Vasconcelos Lanza, Liana Alvares Rodrigues
Summary: This study developed kraft lignin-based carbon xerogel/zinc oxide photocatalysts, which showed improved photocatalytic efficiency due to the addition of carbon xerogel. The optimized composite displayed superior performance in degrading 4-chlorophenol and reducing hexavalent chrome in the presence of 4-chlorophenol. Salinity and system pH had a significant impact on the overall efficiency of the photodegradation process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
B. Akhsassi, A. Bouddouch, Y. Naciri, B. Bakiz, A. Taoufyq, C. Favotto, S. Villain, F. Guinneton, A. Benlhachemi
Summary: The photocatalytic activity of Zn-3(PO4)(2) was effectively enhanced using Zn-3(PO4)(2)/ZnO composites with different synthesis methods. The degradation of Rhodamine B dye was improved under UV irradiations, particularly with 20% ZnO in the solid-state reaction method.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Nima Gomari, Iraj Kazeminezhad, Seyed Ebrahim Mousavi Ghahfarokhi
Summary: ZnSn(OH)(6)/SnO2/rGO ternary nanocomposites were synthesized via a facile one-step hydrothermal route, showing excellent photocatalytic performance for efficient degradation of dyes. The synthesized nanocomposites exhibited superior photocatalytic activity, making them promising for dye degradation applications.
Article
Chemistry, Physical
Filipe da Silva Duarte, Amanda Lys Matos dos Santos Melo, Alice de Barros Ferro, Carmem Lucia de Paiva E Silva Zanta, Jose Leandro da Silva Duarte, Rosane Maria Pessoa Betanio Oliveira
Summary: In this study, a composite of zinc oxide and manganese ferrite was synthesized and used as a photocatalyst for decontamination of emerging pollutants. The ZnO/MnFe2O4 composite showed a positive influence in photodegradation reactions, with higher efficiency in decontaminating rifampicin compared to pure ZnO. Additionally, the solution treated with ZnO/MnFe2O4 was successfully removed through magnetic field induction, making it a promising material for decontamination through photocatalytic reactions.
Article
Chemistry, Physical
Krystyna Mika, Ewelina Wiercigroch, Marcin Pisarek, Marcin Koziel, Dorota Majda, Anton S. Lytvynenko, Grzegorz D. Sulka, Leszek Zaraska
Summary: This study demonstrates the electrochemical generation of nanowire arrays via one-step anodic oxidation of Zn in carbonate-based electrolytes with different pH values. The morphology of the anodic films was characterized, and the composition of the nanomaterials was analyzed using various techniques. The formation of a previously unknown phase of zinc carbonate and the generation of ZnO were observed during the anodization process. The changes occurring during thermal treatment and the photoelectrochemical performance of the ZnO nanostructures were also investigated.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Dayu Li, Kai Xu, Chao Zhang
Summary: This study designs multiple heterojunction structures of anatase-rutile/Bismuth oxyiodide (BiOI) composite fibers using electrospinning and hydrothermal techniques. The influence of different Ti/Bi atomic ratios on the nanostructures and photocatalytic properties is investigated. It is found that compositing BiOI on TiO2 improves the absorption of visible light and reduces the band gap values, leading to the enhanced generation and separation of electrons and holes.
Article
Green & Sustainable Science & Technology
Suwiwat Sangon, Andrew J. Hunt, Yuvarat Ngernyen, Sujittra Youngme, Nontipa Supanchaiyamat
Summary: Highly mesoporous carbon-zinc oxide nanocomposites were synthesized from rice straw, showing excellent adsorption and degradation properties for toxic dyes. Utilizing a 1-step zinc chloride activation process, the material achieved high specific surface area and mesoporosity, with graphene-like sheets observed within the structure.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Electrical & Electronic
Yue Feng, Han Liang, Tianyu Yang, Chi Liu, Aina Gong, Tao Shen
Summary: A novel UV sensor based on MFC-MZI structure coated with ZnO and ZnO composite graphene was proposed in this study. The experimental results demonstrated high sensitivity of the sensor for UV sensing, offering potential applications in various fields.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
D. N. V. V. Konda Lutukurthi, Suman Dutta, Dilip Kumar Behara
Summary: In this study, nanosized zinc oxide powders were synthesized using urea-nitrate solution combustion synthesis with activated carbon as a template and secondary fuel. The powders exhibited reduced crystallite size and increased specific surface area when activated carbon was used as a secondary fuel. This led to enhanced photocatalytic activity in dye degradation, showcasing the potential of this single-step synthesis method for various applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Jian Cao, Chenghao Zhang, Chun Li, Dejun Gao, Xiaoqing Si, Junlei Qi
Summary: A novel method using a combination of anodic aluminium oxide (AAO) templates, AgCuO alloy capillary wetting and hydrothermal reaction has been developed for preparing Ag/CuO composite nanowire arrays. The composite nanowire arrays obtained via the hydrothermal reaction show good electrochemical performance for hydrogen peroxide (H2O2) detection. The Ag nanowire arrays are released and CuO nanowire arrays are grown through the hydrothermal reaction.
Article
Engineering, Civil
Maria Harja, Osman Gencel, Ahmet Sari, Mucahit Sutcu, Ertugrul Erdogmus, Gokhan Hekimoglu
Summary: The experimental study investigates the feasibility of using wastewater treatment sludge and oak wood ash as raw materials in the manufacture of clay-free bricks. The properties of the bricks, such as water absorption, compressive strength, and thermal conductivity, were influenced by the proportions of the waste materials. The results suggest that the clay-free green bricks can meet standard requirements for clay masonry materials and exhibit properties similar to commercial bricks.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Article
Construction & Building Technology
Oguzhan Yavuz Bayraktar, Gokhan Yarar, Ahmet Benli, Gokhan Kaplan, Osman Gencel, Mucahit Sutcu, Marcin Kozlowski, Marta Kadela
Summary: Foam concrete is a lightweight material with excellent thermal insulation and energy absorption capacity. However, its high porosity and pore connectivity lead to low physico-mechanical and durability performance. This study used basalt fibers and calcium aluminate cement to improve the properties of foam concrete, and evaluated its mechanical performance, thermal conductivity, and durability under various conditions.
STRUCTURAL CONCRETE
(2023)
Article
Environmental Sciences
Abdullah Bayram, Emre Arkan, Mucahit Sutcu
Summary: This study compares the adsorption ability of clays and dead microorganisms against special toxic gases. Experimental investigations were conducted on kaolinite, metakaolinite, radiolarite, and diatomite for their adsorption kinetics to ammonia, ethylene, and carbon dioxide. Various analyses were performed for mineralogical and structural characterization of the materials. The results show that diatomite has the highest uptake efficiency among all materials, while metakaolinite has a lower response due to phase transformation. The adsorption behaviors are clarified with Langmuir isotherms, providing insights for using microorganisms as natural adsorbent materials in toxic gas environments.
Article
Engineering, Electrical & Electronic
Zeynep Ertekin, Mustafa Secmen, Mustafa Erol
Summary: Polymer-based dielectric materials with modified carbon black, graphite, and expanded graphite incorporated with an ionic liquid were investigated for their electromagnetic shielding effectiveness. The addition of the ionic liquid enhanced the ionic conductivity and polarizability of the composites. The e-GR showed better dispersion and superior shielding effectiveness compared to modified CB and GR in the PVDF matrix. The homogeneity of the composites was found to be sufficient, with IL e-GR achieving over 9.5 dB/mm and 11.5 dB/mm shielding effectiveness at X and Ku-bands, respectively.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Construction & Building Technology
Mucahit Sutcu, Savas Ozturk, Osman Gencel
Summary: Lightweight bricks were produced using different additive materials such as expanded perlite and recycling paper sludge. A total of seventeen mixture sets were prepared with different additive ratios and firing temperatures. The physical characteristics and mechanical properties of the brick samples were studied, and the influences of process parameters were analyzed. The optimized brick composition (10% EP + 10% RPS) showed the best thermal conductivity and acceptable mechanical properties.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Ceramics
Erdem Tevfik Ozdemir, Serdar Yildirim, Berk Ozler, Tuncay Dikici, Mustafa Erol, Metin Yurddaskal
Summary: Manganese ferrite nanoparticles were synthesized using flame spray pyrolysis, and the effects of annealing on the properties of the nanoparticles were investigated. XRD analysis confirmed the spinel ferrite structure of the synthesized nanoparticles. The nanoparticles exhibited hemispherical-cubic shape with an average size below 100 nm. XPS analysis revealed the chemical bond structures of the nanoparticles. The saturation magnetization decreased with increasing annealing temperature, while coercivity increased.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Polymer Science
Ugur Kartal, Begum Uzunbayir, Eyyup Can Doluel, Metin Yurddaskal, Mustafa Erol
Summary: Highly ordered TiO2 nanotube arrays (TNAs) were fabricated through electrochemical anodization at various durations and voltages. The effects of anodizing parameters were investigated on the geometrical properties of TNAs. Increasing the anodizing time led to a longer nanotube length, whereas changing the anodizing voltage resulted in both length and diameter increases, leading to a significant increase in open porosity and surface area. UV-Vis spectrophotometer analysis revealed that the anodizing parameters greatly influenced the photocatalytic degradation of methylene blue (MB), with TNAs anodized for 45 minutes at 15 V showing the highest photocatalytic activity.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Sibel Oguzlar, Merve Zeyrek Ongun, Irmak Dogan Tunc, Mustafa Erol
Summary: CaAl12O19:Mn4+ phosphor (CAO:Mn) is an important candidate for red-emitting materials in white light-emitting diodes (wLEDs) due to its advanced color rendering and large absorption band. Many researchers have studied the improvement of its optical properties by using different dopants and additives. In this study, the addition of ZnO NWs/CFs, Al-ZnO NWs/CFs, and K-ZnO NWs/CFs additives resulted in a significant increase in the emission intensity of CAO:Mn phosphor.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Ozgur Yasin Keskin, Mustafa Erol
Summary: This study presents a new environmentally friendly matrix material for temperature sensors. Sodium silicate solution and graphite were utilized as the matrix and conductive materials, respectively. The performance of sensors with different graphite contents was investigated, showing negative temperature coefficient behavior and high linearity, sensitivity, and stability.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Ceramics
Saadet Guler, Ahmet Yavas, Gunnur Pulat, Serife Ozcan, Ozan Karaman, Mucahit Sutcu
Summary: This study aims to produce bioactive wollastonite from marble and quartz wastes using a 3-step technique. The effects of production parameters on the phase and morphological structure, biocompatibility, and bioactivity of the synthetic wollastonite were investigated. The results showed that by adjusting the milling and sintering time, high-temperature phase alpha-wollastonite can be synthesized at a relatively low temperature, exhibiting good bioactivity.
JOURNAL OF THE AUSTRALIAN CERAMIC SOCIETY
(2023)
Article
Construction & Building Technology
Olga Kizinievic, Osman Gencel, Viktor Kizinievic, Mucahit Sutcu, Jelena Skamat
Summary: This study evaluates the influence of dolomite industrial waste on the properties and durability of clay bricks and finds that the addition of dolomite powder can improve the thermal conductivity and durability of clay bricks while reducing their bulk density and compressive strength.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Ahmet Yavas, Ebubekir Atan, Mucahit Sutcu
Summary: The study discusses the self-cleaning and photocatalytic performance of clay-based facing bricks produced using red mud and hazelnut shell wastes under visible light. The results show that the incorporation of waste improves the photocatalytic activity and meets the desired physical properties. The best self-cleaning performance is achieved with 5% and 10% red mud combined with 10% hazelnut shell.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Osman Gencel, Abid Ustaoglu, Ahmet Sari, Gokhan Hekimoglu, Mucahit Sutcu, Ayhan Tozluoglu, Ahmet Tutus, Mustafa Cicekler, Vineet Veer Tyagi
Summary: This study introduces a novel wall-covering element made of wallpapers impregnated with Phase Change Material (PCM) to enhance thermal properties and provide effective thermal regulation in interior spaces. The results show that the impregnated wallpapers significantly reduce interior room temperature fluctuations and maintain indoor temperature longer within a comfortable range.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Construction & Building Technology
Oguzhan Yavuz Bayraktar, Gokhan Yarar, Ahmet Benli, Gokhan Kaplan, Osman Gencel, Mucahit Sutcu, Marcin Kozlowski, Marta Kadela
Summary: Foam concrete, as a typical lightweight material, has advantages such as lightweight, high fluidity, excellent thermal insulation, fire resistance, and energy absorption capacity. However, its high porosity leads to poor physico-mechanical and durability performance. This study improved foam concrete by incorporating eco-friendly fiber (basalt fibers) and aluminous cement (calcium aluminate cement) with aggregates of waste marble powder. The experimental results showed that the modified foam concrete exhibited enhanced compressive strength, low thermal conductivity, and improved resistance against magnesium sulfate and hydrochloric acid.
STRUCTURAL CONCRETE
(2023)