Article
Materials Science, Multidisciplinary
Indrajit V. Bagal, Pratik Mane, Maheshwari Arunachalam, Hyojung Bae, Mandar A. Kulkarni, Fawad Tariq, Soon Hyung Kang, Jun-Seok Ha, Sang-Wan Ryu
Summary: By constructing a type-II heterostructure of N-doped ZnO nanowires with an ultra-thin ZnS layer, a core-shell structure is formed which can accelerate the charge transfer process and significantly enhance the resistance to photo-corrosion of N-doped ZnO NWs. The optimal ZnS/N:ZnO core-shell nanowires exhibited a photocurrent density of 0.85 mA cm(-2) at 1.23 Vs RHE, which was 3-fold higher than ZnO nanowires. The reported approach provides possibilities for the construction of efficient and highly stable PEC water-splitting devices.
MATERIALS TODAY PHYSICS
(2023)
Article
Polymer Science
Li Zhang, Wenfeng Zhu, Guoquan Qi, Houbu Li, Dongtao Qi, Shuhua Qi
Summary: By depositing nano-ZnO particles on the surface of silver nanowires, the thermal conductivity and electrical insulation of the composite material were effectively improved. Moreover, the AgNW@ZnO/EP composites exhibited low dielectric constant and good thermal stability.
Article
Chemistry, Analytical
Pratik Mane, Indrajit Bagal, Hyojung Bae, Mandar A. Kulkarni, Ameer Abdullah, Sang-Wan Ryu, Jun-Seok Ha
Summary: Researchers have successfully fabricated hierarchical ZnO-Si NWs with improved photoelectrochemical (PEC) activity by a rational strategy utilizing metal organic chemical vapor deposition (MOCVD) and nitrogen (N) doping. The N:ZnO-Si NWs demonstrated excellent photocurrent density and efficient dye degradation efficiency through PEC water splitting and remediation experiments.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
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, Physical
Gharam A. Alharshan, Abdelaziz Mohamed Aboraia, Mohamed A. M. Uosif, Ibrahim M. Sharaf, Essam R. Shaaban, Mohamed Saad, Hussain ALMohiy, Mohamed M. Elsenety
Summary: Iron-doped zinc oxide nanoparticles were synthesized using the sol-gel combustion method. The effects of iron doping on the structural, optical, and photocatalytic properties of ZnO composites were investigated. XRD analysis confirmed the single hexagonal phase of all samples, while TEM analysis revealed the morphology and particle size. Density functional theory calculations were performed to compare the band structure, density of states, and charge distributions between ZnO and iron-doped ZnO. The results showed that iron concentration influenced the band gap and enhanced the photocatalytic performance of ZnO.
Article
Chemistry, Multidisciplinary
Jia-Chi Su, Tsung-Lin Hsieh, Shu-Meng Yang, Shao-Chun Chao, Kuo-Chang Lu
Summary: With the continuous advancement of high-tech industries, the proper handling of pollutants has become urgent. In this study, Zn2SnO4 (ZTO) nanowires were synthesized and modified with Ag nanoparticles to form nanoheterostructures. The nanoheterostructures exhibited excellent photocatalytic properties, effectively degrading pollutants. The study also explored the reusability and stability of the nanowires and the relationship between photocatalytic efficiency and the number of Ag nanoparticles.
Article
Chemistry, Multidisciplinary
Osama Saber, Aya Osama, Adil Alshoaibi, Nagih M. Shaalan, Doaa Osama
Summary: Water pollution and energy deficiency are major challenges for the global scientific community. By designing zinc oxide nanohybrids, colored pollutants can be effectively removed using solar energy, thereby purifying water with renewable and non-polluting energy.
Article
Chemistry, Physical
Hiroshi Irie, Masaomi Yoda, Toshihiro Takashima, Junya Osaki
Summary: The study achieved selective loading of Ag cocatalyst between ZRO and BVO via photodeposition method, with controlled Ag deposition which led to overall water splitting and increased generation of hydrogen and oxygen.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Jiangyang Liu, Kazuki Nagashima, Yuki Nagamatsu, Takuro Hosomi, Hikaru Saito, Chen Wang, Wataru Mizukami, Guozhu Zhang, Benjarong Samransuksamer, Tsunaki Takahashi, Masaki Kanai, Takao Yasui, Yoshinobu Baba, Takeshi Yanagida
Summary: The surface cation composition of nanoscale metal oxides plays a critical role in determining the properties of various chemical processes, such as catalysts and molecular sensors. This study focused on the modulation of cation composition on the surface of ZnO/(Cu1-xZnx)O heterostructured nanowires and found that an increase in surface copper content suppresses the adsorption of nonanal and the aldol condensation reaction. Spectroscopic analysis and theoretical simulations revealed that surface Cu2+ sites were inactive, explaining the observed weak molecular adsorption behaviors and suppressed reactions. This tailored cation composition surface also showed improvements in electrical molecular sensing of nonanal.
Article
Materials Science, Multidisciplinary
Refik Arat, Guobin Jia, Jan Dellith, Andrea Dellith, Jonathan Plentz
Summary: Transparent conductive hybrid thin films based on silver nanowires, zinc oxide, and graphene were prepared using solution processing methods. The films were characterized by XRD, SEM, conductivity measurement, and stability analysis, showing that graphene flakes coating improved the conductivity and stability of the hybrid films.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Peng-Shuai Bin, Wen-Hao Geng, Tao Wang, Qiangxia Zhu, Min Li, Xiang-Le Liu, Peng-Fei Qian, Ze-Long Bao, Zhi-Xian Yang, Hong-Zhang Geng
Summary: Silver nanowires and aluminum-doped zinc oxide were prepared using polyol and gel-sol method respectively, followed by an all-solution method to prepare a bendable, strong adhesion, flat, and high optical transmittance composite film. The film exhibited low sheet resistance, reduced roughness, and improved adhesion, making it suitable for use as an anode for OLEDs.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Nitheesh M. Nair, Mohammad Mahaboob Jahanara, Debdutta Ray, P. Swaminathan
Summary: Zinc oxide with silver nanowires nanocomposite exhibits good transparency and conductivity, suitable for low-cost, large-area transparent PD fabrication. The anomalous resistance change is explained by the band alignment between ZnO and Ag, leading to improved photoresponsivity compared to pure ZnO absorber layer. This nanocomposite has the potential for fabricating other types of sensors.
FLEXIBLE AND PRINTED ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Kasi Radha, Bhuvaneswari Selvaraj, Parthasarathy Srinivasan, Akshay Krishnakumar, John Bosco Balaguru Rayappan, K. Jayanth Babu
Summary: This study reports the acetaldehyde-sensing properties of tungsten-doped ZnO thin films deposited using the SILAR technique, showing that tungsten doping enhances the response to acetaldehyde, particularly with the 10 mM tungsten-doped ZnO thin film exhibiting a response of 947 to 100 ppm acetaldehyde.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Wenchao Yang, Bin Cai, Kacper J. Lachowski, Qiuxiang Yin, James J. De Yoreo, Lilo D. Pozzo, Chun-Long Chen
Summary: This study presents a peptoid-based approach for controlling the formation of ZnO nanomaterials in ambient aqueous conditions. The hydrophobicity of peptoids plays a critical role in the peptoid-controlled formation of ultrathin 2D ZnO nanomaterials.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Engineering, Chemical
Wenhao Dong, Feng Liu, Xingxing Zhou, Lanlan Wang, Ziqiang Zhao, Yuqi Zhou, Haoxuan Li, Qingsheng Liu, Bingyao Deng, Dawei Li
Summary: In this study, PVDF nanofibrous membranes loaded with ZnO seeds were prepared using solution blow spinning (SBS), and ZnO nanowires were successfully synthesized to create a superhydrophilic surface with hierarchical structure. The membrane exhibited super high water flux and showed potential applications in oil-water separation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Electrochemistry
Belqasem Aljafari, Turki Alamro, Manoj K. Ram, Arash Takshi
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2019)
Article
Energy & Fuels
Zhenxing Han, Manoj Kumar Ram, Rajeev Kamal, Turki Alamro, D. Yogi Goswami, Chand Jotshi
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2019)
Article
Nanoscience & Nanotechnology
Fatemeh Khorramshahi, Adam G. Woughter, Manoj K. Ram, Ioannis Kymissis, Arash Takshi
ADVANCED ELECTRONIC MATERIALS
(2019)
Article
Chemistry, Physical
J. Trey Diulus, Radwan Elzein, Rafik Addou, Gregory S. Herman
JOURNAL OF CHEMICAL PHYSICS
(2020)
Article
Physics, Multidisciplinary
C. Lowell Watts, Lee Aspitarte, Yen-Hung Lin, Wen Li, Radwan Elzein, Rafik Addou, Min Ji Hong, Gregory S. Herman, Henry J. Snaith, John G. Labram
COMMUNICATIONS PHYSICS
(2020)
Article
Nanoscience & Nanotechnology
Stavroula Kampouri, Fatmah M. Ebrahim, Maria Fumanal, Makenzie Nord, Pascal A. Schouwink, Radwan Elzein, Rafik Addou, Gregory S. Herman, Berend Smit, Christopher P. Ireland, Kyriakos C. Stylianou
Summary: The photocatalytic performance of MOF-based systems can be enhanced through the construction of MOF/MOF heterojunctions. The MIL-167/MIL-125-NH2 heterojunction exhibits efficient photocatalytic H2 production under visible-light irradiation without the need for any cocatalysts.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Inorganic & Nuclear
Tasnim Rahman, Nicolas P. Martin, Jessica K. Jenkins, Radwan Elzein, Dylan B. Fast, Rafik Addou, Gregory S. Herman, May Nyman
Summary: Synthesizing functional materials from water is crucial for the future of sustainable energy. This study demonstrates the importance of Nb-POM speciation in enabling deposition of Nb2O5, LiNbO3, and KNN from high-concentration solutions. The films were characterized using various techniques, and a new method was proposed to convert aqueous deposition solutions from {Nb-10}-POMs to {Nb-24}-POMs.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Jegon Lee, Prajwal Adiga, Sang A. Lee, Seung Hyun Nam, Hyeon-Ah Ju, Min-Hyoung Jung, Hu Young Jeong, Young-Min Kim, Cindy Wong, Radwan Elzein, Rafik Addou, Kelsey A. Stoerzinger, Woo Seok Choi
Summary: This study investigates the role of catalytically active sub-surface layers in electrocatalytic reactions by controlling the atomic-scale thickness of LSMO films and heterostructures. The thickness dependence of activity towards the oxygen evolution reaction varies in LSMO films and LSMO/SrRuO3 heterostructures. This research provides new insights for designing efficient electrocatalytic nanomaterials and core-shell architectures.
Article
Energy & Fuels
Tareq Kareri, Mohammad Shakhawat Hossain, Manoj K. Ram, Arash Takshi
Summary: In this study, three flexible fiber-shaped hybrid devices were designed and fabricated using twisting conductive threads as electrodes and a photoactive polyaniline-based gel electrolyte. These devices demonstrated the dual properties of energy harvesting and storage. The highest capacitance was achieved in the device with the anode made of Ny66-Ag/CNT, while the device with the electron transport layer (ETL) exhibited a photovoltage of 37 mV when exposed to light for 400 s.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Review
Energy & Fuels
Suleyman G. Gizer, Osman Polat, Manoj K. Ram, Nurettin Sahiner
Summary: Anthropogenic activities have led to a significant increase in carbon dioxide emissions, posing a global problem. Despite its harmful effects, CO2 can be potentially utilized in various industries. However, CO2 capture technologies are still in the early stages of development, but advancements in technology and cost reduction may facilitate their wider adoption in the future. Carbon capture is considered a promising solution for mitigating climate change. This review highlights recent CO2 capture technologies and evaluates their potential applications in different industries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Inorganic & Nuclear
Sahin Demirci, Gorkem Gizer, Osman Polat, Manoj K. Ram, Nurettin Sahiner
Summary: Metal organic frameworks (MOFs) are porous materials with high surface area that can be used in various industrial applications. This paper focuses on the synthesis of fluorescent MOFs using perylene 3,4,9,10 tetracarboxylic dianhydride (PTCDA) as the organic ligand and Co(II) and La(III) metal ions. The fluorescence properties, surface area, and metal ion chelating activity of the prepared MOFs were investigated.
INORGANICA CHIMICA ACTA
(2022)
Article
Materials Science, Composites
Mehtap Sahiner, Betul Ari, Manoj K. Ram, Nurettin Sahiner
Summary: In this study, nitrogen-doped carbon dots (N-doped CDs) with fluorescence and antimicrobial properties were synthesized by the hydrothermal method and embedded within poly(lactic acid-co-glycolic acid) (PLGA) films. The results showed that the fluorescence intensity increased with the amount of CDs in CD@PLGA films. The 50-CD@PLGA films exhibited antimicrobial activity against S. aureus and E. coli microorganisms. Furthermore, the 50-CD@PLGA film released about 38% of the embedded CDs in approximately 12 days and demonstrated good blood compatibility.
JOURNAL OF COMPOSITES SCIENCE
(2022)
Review
Chemistry, Applied
Gorkem Gizer, Umur Onal, Manoj Ram, Nurettin Sahiner
Summary: Biofouling, the accumulation of living organisms on surfaces in contact with water, causes significant problems in various industries. To mitigate these problems, toxic and non-toxic antifouling methods have been developed. However, most of these methods have drawbacks and harm the environment. The main objective of antifouling research is to develop green, sustainable, widely applicable, and environmentally friendly technologies. Chemical, physical, and biological methods have been discussed in this review, highlighting the use of antibacterial surfaces and biomimetic materials.
BIOINTERFACE RESEARCH IN APPLIED CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Danny Illera-Perozo, Humberto Gomez-Vega, Manoj Ram
Summary: A green and scalable synthesis method for polymeric quinone composites with graphene has been developed, utilizing cellulose nanocrystals to improve the electrochemical energy storage performance. This method avoids critical materials, uses low-cost feedstocks, and achieves stable aqueous graphene dispersions. The composite material showed high storage metrics and retained over 70% performance after 1000 charge/discharge cycles.
Proceedings Paper
Optics
Belqasem Aljafari, Manoj K. Ram, Arash Takshi
PHYSICS, SIMULATION, AND PHOTONIC ENGINEERING OF PHOTOVOLTAIC DEVICES VIII
(2019)
