Article
Engineering, Electrical & Electronic
N. Srinivasan Alias L. Arunsankar, M. Anbuchezhiyan, S. Padmaja
Summary: Carbon-doped ZnO nanoparticles were synthesized using different carbon precursors and their effect on the photocatalytic performance of ZnO was studied. The presence of carbon in the ZnO lattice was confirmed, and it was found to enhance the photocatalytic activity and stability of ZnO. Trapping experiments were conducted to demonstrate the degradation process and potential photocatalysis mechanism.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Physics, Multidisciplinary
Ahmed F. Abdulrahman, Sabah M. Ahmed, Samir M. Hamad, Munirah A. Almessiere, Naser M. Ahmed, S. Mohammad Sajadi
Summary: The study showed that adjusting the pH values from acidic to alkaline using ammonia solution induced a significant change in the morphology of ZnO nanostructures. Increasing pH values affected the preferred orientation plane (002) and average transmittance spectrum, resulting in a shift of the absorption band edge to a lower energy region due to the quantum size effect.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Chemistry, Physical
Abel Garcia-Barrientos, Roberto Carlos Ambrosio-Lazaro, Rafael Ramirez-Bone, Mario A. A. Garcia-Ramirez, Obed Perez-Cortes, Ruben Tapia-Olvera, Jairo Plaza-Castillo
Summary: This study investigated the influence of pH on the production of ZnO nanostructured thin films using chemical bath deposition to enhance solar cell efficiency. The direct deposition of ZnO films onto glass substrates at various pH levels did not affect crystallinity or overall material quality, as observed through X-ray diffraction patterns. However, increasing pH values improved surface morphology, resulting in changes in nanoflower size between pH 9 and 11. Furthermore, ZnO nanostructured thin films synthesized at pH levels of 9, 10, and 11 exhibited superior characteristics in short-circuit current density and open-circuit photo-voltage compared to films produced at lower pH values.
Article
Engineering, Chemical
Xiangwei Xu, Wenkai Song, Zenglong Wu, Wenxian Chen, Yuyuan Yao
Summary: In this study, a novel nitrogen-doped carbon nanolayer with Fe0/Fe3C nanoparticles was successfully fabricated and demonstrated to have highly effective and environmentally friendly properties in removing Carbamazepine from wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Optics
C. J. Pereyra, L. Campo, E. Navarrete-Astorga, A. Cuevas, R. Romero, D. Ariosa, R. Henriquez, E. Munoz, F. Martin, J. R. Ramos-Barrado, E. A. Dalchiele, R. E. Marotti
Summary: The optical properties of ZnO nanorod arrays were investigated using total transmittance and diffuse reflectance spectroscopy. A model based on the Mie theory for cylinders was implemented to understand the observed scattering phenomena, showing good agreement with experimental results.
Article
Chemistry, Physical
Gobinath Marappan, Elakia Manoharan, David Chidambaram, Akila Kandasamy, Yuvaraj Sivalingam, Corrado Di Natale, Velappa Jayaraman Surya
Summary: The study demonstrated significant effects of different pH values on the morphology and photosensitivity of zinc oxide nanostructures, with zinc oxide nanostructures at pH 9 and 11 showing similar to 3 times enhanced photovoltage towards triethylamine.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Sumit Mukherjee, Subhamay Pramanik, Sandip Das, Subhabrata Chakraborty, Shyamal Mondal, Tatan Ghosh, Rajib Nath, Probodh K. Kuiri
Summary: The study synthesized ZnO nanoparticles with different morphologies using varying KOH concentrations as the controlling parameter, resulting in nanoparticles ranging from quasi-spherical to rod shapes. The KOH concentration played a crucial role in influencing the Oriented Attachment (OA) among ZnO nanoparticles.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Environmental
Chong -Yang Xing, Guang-Yi Li, Que Wang, Jin-Song Guo, Yu Shen, Peng Yan, Fang Fang, You -Peng Chen
Summary: Research has shown that model bacteria encapsulated with hydroxylamine oxidase in nanocompartments can effectively remove NH2OH from water. Genetically modified bacteria with these nanocompartments have a higher removal efficiency. Proteomics analysis also revealed that the nanocompartments enhanced bacterial activity and reduced intracellular NH2OH concentration.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Biotechnology & Applied Microbiology
Xiaoliang Ren, Qiusheng Yang, Shufang Wang, Congcong Guan, Dongsheng Zhang, Xiaoshu Ding, Yanji Wang
Summary: A novel betaine hydrochloride hydroxylamine (BHA) was successfully prepared and showed higher reactivity compared to traditional NH2OH·HCl in the synthesis of cyclohexanone oxime (COX) from cyclohexanone (CYC). BHA also proved to be easily separable and recyclable, providing a green route for COX synthesis.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2021)
Article
Chemistry, Organic
Yin Wang, Xuetong Wang, Yanwu Li, Xiuyu Zhang, Lingli Li, Tingshu He, Jianyong Yuan, Suqin Shang
Summary: A new synthesis strategy was developed to obtain nitriles from aldehydes through a one-pot method, resulting in the successful synthesis of 27 functionalized nitrile compounds with good to excellent yields.
CURRENT ORGANIC SYNTHESIS
(2022)
Article
Chemistry, Physical
Sasthi Charan Mandal, Jaydeb Chakrabarti
Summary: In this study, molecular dynamics simulations enhanced by umbrella sampling were conducted to investigate the interaction between glucose and four common surfaces of ZnO ((1010), (1120), (0001), and (0001)). The results showed that the hydration layers above the surfaces significantly influenced the approach of glucose. Potential of mean force calculations revealed that the (1010) surface had the strongest adsorption free energy towards glucose (-6.81 kJ mol(-1)). Therefore, our study offers a theoretical understanding of the nano-bio junction between glucose and ZnO surfaces, suggesting that the (1010) surface could be used for fabricating a direct glucose sensor.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Yi Zeng, Yuexin Zhao, Linhao Yang, Yang Jiang
Summary: Two alternative mechanisms involving non-covalent catalysis by hydrogen-bonding (Path I) and covalent catalysis via hydroxamic acid formation (Path II) are considered for the transamidation of acetamide and benzylamine. Our computational results demonstrate that Path II via O-path is the more favorable pathway.
Article
Chemistry, Multidisciplinary
Yufu Zhu, Jiaying Yan, Lei Zhou, Liangdong Feng
Summary: This paper demonstrates the synthesis of rhombic ZnO microrods surrounded by ZnO nanorods on zinc foils using a hydrothermal method. Photocatalytic degradation of Rhodamine B solution was employed to evaluate the photocatalytic performance of the fabricated samples. The hierarchical micro/nanostructures formed by ZnO nanorods surrounding the surfaces of rhombic ZnO microrods exhibited superior photocatalytic performance compared to rhombic Zn(OH)F and ZnO microrods. The enhanced performance can be attributed to the larger surface area of the hierarchical ZnO micro/nanostructures. Additionally, the ZnO nanorods grown on the rhombic ZnO microrods demonstrated recyclability and relatively stable photocatalytic performance.
Article
Chemistry, Analytical
Tara Ghafouri, Negin Manavizadeh
Summary: This paper proposes a method for fabricating milli/microfluidic multipurpose devices using 3D printing and triboelectric nanogenerator (TENG) technologies. The liquid-solid TENG device serves as an energy harvester and sensor, with flexibility in operation modes. A millifluidic pH sensor made from ethylene vinyl acetate (EVA) and zinc oxide nanosheets is fabricated and compared to contemporary electrochemical pH sensors. The device shows high sensitivity and various desirable characteristics, making it a promising candidate for real-life and point-of-care devices.
ANALYTICA CHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Alex Sam, Vishal Natraj, Gobinath Marappan, Yuvaraj Sivalingam, Velappa Jayaraman Surya
Summary: Piezoelectric nanogenerator (PENG) devices based on zinc oxide (ZnO) nanostructures of different pH levels have been fabricated and analyzed for their output performance. It was found that PENG with pH 12 nanostructures exhibited higher voltage and current output, as well as good stability.
Article
Robotics
Ahmed Altameem, M. Shaheer Akhtar, Torki Altameem, H. Fouad, Sukumaran Anil, Young Soon Kim, Ahmed E. Youssef
Summary: This study introduces responsive policy decision using manifold mediator learning to improve data detection accuracy and accuracy in robot-assisted human-computer interaction applications.
INTERNATIONAL JOURNAL OF HUMANOID ROBOTICS
(2023)
Article
Engineering, Electrical & Electronic
Rizwan Wahab, Manawwer Alam
Summary: In this study, γ-Al2O3 quantum dots were used as a sensor to detect the organosulfur compound thiourea. The study showed the feasibility and stability of the γ-Al2O3QDs/GCE sensor under different conditions through various experiments and analyses.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Rizwan Wahab, Farheen Khan, Manawwer Alam, Javed Ahmad, Abdulaziz A. Al-Khedhairy
Summary: This study designed a sensor material for detecting urea using gamma-Al2O3QDs. The gamma-Al2O3QDs were processed and characterized, and their sensing efficiency with urea solution was tested. The performance of the gamma-Al2O3QDs/GCE sensor was evaluated with different parameters and a real sample analysis was conducted.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Rizwan Wahab, Farheen Khan, Manawwer Alam, Yogendra Kumar Mishra
Summary: Silver nanoparticles have versatile applications in energy solutions and human health. This study explores the potential of silver nanoparticles as a sensing material for the biological molecule riboflavin, with a focus on electrochemical processes. The study provides insights into the properties and efficiency of the silver nanoparticle-based sensing material and proposes a possible mechanism.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Biochemistry & Molecular Biology
Md. Abu Hanif, Hyokyeong Shin, Danbi Chun, Hong Gun Kim, Lee Ku Kwac, Young Soon Kim
Summary: This study aims to remove harmful volatile organic compounds (VOCs) using as-prepared polypropylene membrane + TiO2 nanoparticles (PPM + TiO2 NPs) through photocatalytic gas bag method under UV light. The results confirm that PPM + TiO2 NPs material successfully degraded formaldehyde gas, with a 70% degradation rate within 1 hour of UV illumination.
Article
Biochemistry & Molecular Biology
Mohammad Rafe Hatshan, Quaiser Saquib, Maqsood A. A. Siddiqui, Mohammad Faisal, Javed Ahmad, Abdulaziz A. Al-Khedhairy, Mohammed Rafi Shaik, Mujeeb Khan, Rizwan Wahab, Valeria De Matteis, Syed Farooq Adil
Summary: Recent studies have investigated the potential applications of surface-tailored graphene oxide (GO) as an anticancer agent. However, the efficacy of nonfunctionalized graphene oxide nanolayers (GRO-NLs) as an anticancer agent has not been well explored. In this study, GRO-NLs were synthesized and their in vitro anticancer potential was evaluated in breast, colon, and cervical cancer cells. The results showed that GRO-NLs exhibited cytotoxicity and induced apoptosis in these cancer cells through various mechanisms, including mitochondrial dysfunction and upregulation of genes involved in apoptosis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Rizwan Wahab, Manawwer Alam
Summary: This study utilized aluminum oxide quantum dots (γ-Al2O3QDs) for concentration-based analysis of hydrogen peroxide (H2O2). The γ-Al2O3 was synthesized through a hydrothermal solution process and characterized in detail. The γ-Al2O3 QDs were employed for the detection of H2O2 and their sensing efficiency was evaluated with a three-electrode system.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Farzana Akter, Dulal Chandra Kabiraz, Md. Monirul Islam, Shahed Ahmed, Md. Abu Hanif, Young Soon Kim
Summary: A cheap and disposable pencil graphite electrode (PGE) with amine groups (Am-PGE-1) was developed and further improved by activation with a negative potential scan (Am-PGE-2). The improved Am-PGE-2 showed enhanced electrochemical properties compared to bare PGE, and was used for the detection of catechol. The sensor demonstrated good selectivity and effectiveness in real life applications.
Article
Chemistry, Multidisciplinary
Md. Abu Hanif, Young-Soon Kim, Jeasmin Akter, Hong Gun Kim, Lee Ku Kwac
Summary: The goal of this research is to eliminate a toxic dye from wastewater using a cost-effective photocatalytic process. A N-doped ZnO/carbon nanotube nanocomposite was synthesized and showed excellent photocatalytic performance under visible light irradiation. The composite exhibited higher activity compared to other catalysts, and its reaction kinetics, reusability, stability, and environmental impact were investigated.
Article
Multidisciplinary Sciences
Nida N. Farshori, Ebtesam S. Al-Sheddi, Mai M. Al-Oqail, Shaza M. Al-Massarani, Ebtesam A. Al-Jassas, Javed Ahmad, Quaiser Saquib, Rizwan Wahab, Abdulaziz A. Al-Khedhairy, Maqsood A. Siddiqui
Summary: Artemisia monosperma extracts exhibit cytotoxic effects on colorectal cancer cells and may serve as a promising therapeutic agent.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Article
Multidisciplinary Sciences
Rizwan Wahab, Maqsood A. Siddiqui, Javed Ahmad, Quaiser Saquib, Abdulaziz A. Al-Khedhairy
Summary: This study compares the cytological responses of breast cancer cells to silver and molybdenum oxide nanostructures. It finds that AgNPs have a higher cytotoxicity in MCF-7 cells compared to a-MoO(3)NRs, and can induce apoptosis.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Article
Multidisciplinary Sciences
Naushad Ahmad, Suliman Yousef Alomar, Fadwa Albalawi, Mohammad Rizwan Khan, Nida Nayyar Farshori, Rizwan Wahab, Mohammed Rafi Shaik
Summary: In this study, magnetic nanoparticles of cobalt ferrite (CF-NPs) and magnesium-cobalt ferrite (MCF-NPs) were synthesized and characterized. The CF-NPs showed higher cytotoxicity and reactive oxygen species generation compared to MCF-NPs in breast cancer cells. These findings suggest that ferrites may be a promising model for cancer treatments.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Article
Multidisciplinary Sciences
Rizwan Wahab, Maqsood. A. Siddiqui, Javed Ahmad, Quaiser Saquib, Abdulaziz A. Al-Khedhairy
Summary: Breast cancer is a common disease that affects females worldwide. This study evaluated the cytological and apoptotic effects of functional carbon nanotubes (FCNTs) and neodymium oxide (Nd2O3NRs) on breast cancer cells. The results showed that Nd2O3NRs were more effective than FCNTs in inducing apoptosis in the cells.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Quaiser Saquib, Stefan Schwaiger, Mostafa Alilou, Sarfaraz Ahmed, Maqsood A. Siddiqui, Javed Ahmad, Mohammad Faisal, Eslam M. Abdel-Salam, Rizwan Wahab, Adnan J. Al-Rehaily, Hermann Stuppner, Abdulaziz A. Al-Khedhairy
Summary: We investigated the anticancer mechanism of a chloroform extract of marine sponge (Haliclona fascigera) (sample C) in human breast adenocarcinoma (MCF-7) cells. The exposure to sample C decreased cell proliferation and induced reactive oxygen species, nitric oxide, mitochondrial dysfunction, and apoptosis in MCF-7 cells. Furthermore, the qPCR array revealed potential genes involved in apoptosis pathways and immunofluorescence analysis confirmed the presence of specific proteins in the treated cells.
Article
Agriculture, Dairy & Animal Science
Dawoon Jeong, Young Soon Kim, Soohyun Cho, Inho Hwang
Summary: The study evaluated CO2 emissions from beef and pork production and distribution chains in the South Korean meat industry. Data from example farms and slaughterhouses were assessed based on guidelines and calculations. The main factors considered were animal feeds, waste, transportation, energy and water, refrigerants, and packaging data. The results showed significant emissions, with manure waste being the greatest factor affecting CO2 emissions of packaged meats.
JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY
(2023)