Article
Materials Science, Multidisciplinary
Swapnali B. Dhage, Vithoba L. Patil, Pramod S. Patil, Jungho Ryu, Deepak R. Patil, Yuvraj S. Malghe
Summary: CuO-SnO2 nanocomposites were successfully synthesized and studied for their potential as CO gas sensors. The thermal stability and gas sensitivity of the nanocomposites were confirmed, showing excellent repeatability and sensitivity towards CO gas. The XRD results indicated pure phase formation of CuO-SnO2 heterostructure with a band-gap of 2.63 eV.
Article
Materials Science, Multidisciplinary
Pravin Adhav, Digamber Pawar, Balasaheb Diwate, Manisha Bora, Smita Jagtap, Ashish Chourasia, Sabrina Dallavalle, Vasant Chabukswar
Summary: This paper presents a highly sensitive and reusable gas sensor for ammonia (NH3) based on Polyaniline-silver nanocomposite (PANI-Ag). The PANI-Ag nanocomposite was synthesized using in-situ, sono-chemical oxidative polymerization methods. The sensor showed excellent performance with fast response and recovery time, as well as high sensitivity at low ammonia concentrations.
Article
Chemistry, Physical
Kai Zhang, Hong-Yan Zeng, Ming-Xin Wang, Zhen Li
Summary: This study developed a novel strategy to prepare a non-enzymatic H2O2 sensor using Ag nanoparticles. The LDH/PPy-Ag electrode material exhibited high stability and excellent electrocatalytic activity for H2O2 reduction. The sensor showed excellent sensing performance towards H2O2, with a wide linear range, high sensitivity, low detection limit, and good stability.
Article
Chemistry, Physical
Md Mostafizur Rahman, Md Rayhan Hossen, Iftidul Alam, Md Habibur Rahman, Omar Faruk, Macid Nurbas, Mohammed Mastabur Rahman, Mohammad Mizanur Rahman Khan
Summary: Conducting polymers based hexagonal boron nitride (h-BN) nanocomposites, including polyaniline (PANI)/h-BN and polyaniline-polypyrrole (PANI-PPy)/h-BN, were successfully fabricated using a chemical oxidative polymerization approach. The synthesized materials exhibited desirable properties such as improved thermal stability and irregular morphological structures. The PANI/h-BN nanocomposites showed the highest capacitance and capacitance retention after multiple cycles compared to other materials. Furthermore, a hybrid asymmetric supercapacitor device composed of PANI/h-BN as the positive electrode and activated carbon (AC) as the negative electrode demonstrated superior performance in terms of specific capacitance, power density, and LED lighting time.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Seied Abulfazl Moosaviyan, Mohammad Reza Baezzat, Mehrorang Ghaedi, Hamid Abbasi-Asl
Summary: This study investigates the photodegradation of methylene blue (MB) and rhodamine B (RhB) using Ag-Ag2SeO3/Ppy nanocomposite as a stable photocatalyst. Various characterization techniques were used to analyze the composition and properties of the photocatalyst. The optimized experimental conditions achieved high levels of photodegradation for both MB and RhB. The study also analyzed the contribution of active species and the reproducibility and stability of the method.
JOURNAL OF NANOSTRUCTURE IN CHEMISTRY
(2023)
Article
Engineering, Environmental
Yongyun Mao, Jiyang Xie, Huan Liu, Wanbiao Hu
Summary: The designed coaxial hierarchical AgNW@Ni(OH)(2)@PPy electrode shows excellent specific capacitance and cyclic stability, leading to an all-solid-state asymmetric supercapacitor with ultrahigh energy density. The outstanding performance is attributed to the coaxial hierarchical design with innermost and outermost dual-electric channels.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Haicheng Wang, Huating Wu, Huifang Pang, Yuhua Xiong, Shuwang Ma, Yuping Duan, Yanglong Hou, Changhui Mao
Summary: Lightweight nanocomposites made of magnetic and dielectric units have attracted great interest as potential high-performance electromagnetic wave absorbing materials. This study reports a method to fabricate (Co, SiO2)/PPy composites with tunable electromagnetic properties, where the absorption performance and effective bandwidth can be controlled by adjusting the SiO2 content. These composites show efficient absorption, covering the entire X band, with key factors including improved impedance matching, high interfacial polarization, and complex electromagnetic synergy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
Ting Liu, Na Zhang, Kaili Zhang, Yan Wang, Yiming Qi, Meng Zong
Summary: A highly efficient nanocomposite absorber was prepared by doping polyoxometalate and Fe3O4 on the surface of MXene, which effectively adjusted the electromagnetic parameters and improved the absorbing performance.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
M. Boomashri, P. Perumal, Himadri Tanaya Das, V Ganesh, I. S. Yahia
Summary: This study investigates the influence of Ag doping on the SnO2 sensor at room temperature, finding that 3wt% Ag-doped SnO2 shows improved sensitivity towards ammonia gas. Additionally, it was observed that the doping of Ag into the SnO2 lattice affected the crystallization, morphology, optical properties, and gas sensing abilities of the sensor.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Xiaobin Dong, Shoujuan Wang, Qin Wu, Keyin Liu, Fangong Kong, Jiaxuan Liu
Summary: A rational design of Ag-Ag2S co-catalyst structure enhances the photocatalytic H-2 production efficiency in g-C3N4. The prepared g-C3N4/Ag-Ag2S-8 shows superior H-2 production rate and acceptable photostability. Multiple characterizations suggest that rapid carrier separation and excellent proton capturing ability are key factors for efficient photocatalysis in g-C3N4/Ag-Ag2S composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Qingsong Zhang, Yang Xiao, Liu Yang, Yanjun Wen, Zhu Xiong, Lin Lei, Lin Wang, Qingyi Zeng
Summary: A branched core-shell nanosphere composed of an anatase TiO2 core and a TiO2 nanobranch shell with gradient-doped N has been synthesized. The optimized nanosphere exhibits outstanding hydrogen evolution rate and high activity in photocatalytic degradation of various refractory organic pollutants.
CHINESE CHEMICAL LETTERS
(2023)
Article
Engineering, Environmental
Robin Wunsch, Carina Mayer, Julia Plattner, Fabienne Eugster, Richard Wulser, Jens Gebhardt, Uwe Huebner, Silvio Canonica, Thomas Wintgens, Urs von Gunten
Summary: Organic micropollutants (MPs) in water resources can be effectively reduced by UV/H2O2 based advanced oxidation processes, with a model using internal probe compounds able to accurately predict the abatement of other MPs. The model was validated in laboratory and pilot scale experiments, showing a typical prediction accuracy within ±20% of the measured abatement values. The precision of kinetic parameters for UV susceptible and UV resistant probe compounds have the strongest impact on the accuracy of the model in typical water treatment applications.
Article
Chemistry, Physical
Yixuan Wen, Shuaijun Ding, Chongchong Ma, Peng Jia, Wei Tu, Yunna Guo, Shuang Guo, Wei Zhou, Xiaoqian Zhang, Jianyu Huang, Liqiang Zhang, Tongde Shen, Yuqing Qia
Summary: A nanoscale Li-O-2 nanobattery was assembled in an aberration-corrected environmental transmission electron microscope (ETEM) to track the catalytic mechanism of silver (Ag) catalyst during the charge/discharge process. It was found that numerous Ag nanoparticles were observed on the surface of Ag nanowire, which acted as catalysts for subsequent reactions. By synthesizing Ag nanoparticles decorated on porous carbon, the cycling stability and maximum specific capacity of Li-O-2 battery were improved. This study suggests that nanoscale Ag may be a promising catalyst for Li-O-2 battery.
Article
Materials Science, Multidisciplinary
Hemdan S. H. Mohamed, Mohamed Rabia, Xian-Gang Zhou, Xu-Sen Qin, Gomaa Khabiri, Mohamed Shaban, Hussein A. Younus, S. Taha, Zhi-Yi Hu, Jing Liu, Yu Li, Bao-Lian Su
Summary: Developing anatase/rutile phase-junction Ag/TiO2 nanocomposites as photocathodes for hydrogen production resulted in enhanced photoelectrochemical activity, with improved separation, diffusion, and transformation of electron/hole pairs, tuned band gap for enhanced light absorption, and provision of electron traps to prevent recombination of photogenerated electrons and holes.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Mohammad Muzibur Rahman, Md Mahmud Alam, Abdullah Mohamed Asiri, Sujan Chowdhury, Raja Saad Alruwais
Summary: In this study, the authors developed a method for measuring citric acid in fruit juices using a GCE modified with ZnO/CuO nanocomposites. DPV and CV electrochemical techniques were utilized to analyze the citric acid. The prepared ZnO/CuO nanocomposites were characterized in detail, and the sensor parameters were calculated. The results showed that the proposed sensor had good reproducibility, long-time stability, and response time, making it a promising tool for the analysis of fruit samples.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Review
Environmental Sciences
Md. Refat Jahan Rakib, Aniruddha Sarker, Kirpa Ram, Md. Giash Uddin, Tony R. Walker, Tanzin Chowdhury, Jamal Uddin, Mayeen Uddin Khandaker, Mohammed M. Rahman, Abubakr M. Idris
Summary: Microplastics are prevalent pollutants that can be found in aquatic ecosystems globally. They can be ingested by aquatic species and transferred through higher trophic level food webs. However, most studies on microplastic aquatic toxicity have been conducted in laboratory settings, and the impact of microplastics on aquatic species and higher trophic level consumers in natural ecosystems is still relatively unknown. This study provides an overview of microplastic transport pathways, ecotoxicology, food web transfer, and examples of toxic pollutants sorbed onto microplastics in aquatic food webs, aiming to guide future research priorities in understanding microplastic toxicity through aquatic food webs.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Chemistry, Multidisciplinary
M. Faisal, M. M. Alam, Jahir Ahmed, Abdullah M. Asiri, Jari S. Algethami, A. S. Alkorbi, O. Madkhali, Mahmood D. Aljabri, Mohammed M. Rahman, Farid A. Harraz
Summary: This study aims to develop an efficient electrochemical sensor using gold-modified-PPy-C/C3N4 nanocomposites. The structural, crystallographic, and opto-electronic properties of the nanocomposites were evaluated, and the nanocomposites were then coated onto a glassy carbon electrode to create a modified working electrode for nitrite detection. The sensor exhibited linear electrochemical responses and high sensitivity, making it suitable for analyzing environmental samples.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Nayem Hossain, Mohammad Asaduzzaman Chowdhury, Mohamed Kchaou, Ashraful Alam, Mohammed M. Rahman
Summary: This article discusses the potentiality and rising hope of nanoparticles in targeted drug delivery for deactivating malignant biological cells. It describes the working principle of the human immune system and the synthesis procedures of bio-based nanoparticles. The processes of nanoparticle diffusion, drug release, and matrix delivery system are also discussed.
CHEMICAL PHYSICS IMPACT
(2023)
Review
Chemistry, Multidisciplinary
Md. Mahbubur Rahman
Summary: Perovskite solar cells (PSCs) have gained popularity due to their simple structure, low cost, and high efficiency. Integrating PSCs with supercapacitors (SCs) in the form of integrated photo-supercapacitors (IPSs) has attracted attention as a solution to address the intermittent nature of solar radiation. This review provides a comprehensive summary of the current research progress and challenges in PSCs-IPSs and metal halide perovskite (MHPs)-based SCs and PSs.
Article
Thermodynamics
Aminul Islam, Siow Hwa Teo, Md. Tarekul Islam, Easteak Ahamed, Md. Shahinoor Islam, Abdulkareem Ghassan Alsultan, Hadi M. Marwani, Mohammed M. Rahman, Abdullah M. Asiri, Yun Hin Taufiq-Yap, Md. Rabiul Awual
Summary: Renewable energy sources provide more reliable and resilient alternatives to traditional sources, and biodiesel, derived from renewable resources, has a significantly lower carbon footprint. The study focused on efficient biodiesel production using visible light-irradiated Si/MgO heterojunctions and showed that Si/MgO photocatalyst exhibited superior activity. The work provided valuable insights into efficient plasmonic photocatalysis, paving the way for future advancements in high-performance photocatalysts.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Chemistry, Physical
Mohammad Asad, Muhammad Nadeem Arshad, Abdullah M. Asiri, Hadi M. Marwani, Khalid A. Alamry, Mohammad Mahboob Alam, Syed Nazreen, Ahmed A. Elhenawy, Mohammed M. Rahman
Summary: N-Acylated-2-pyrazolines (NA2Pyr) were synthesized using chalcone and hydrazine hydrate, and their structures were determined. A metal ion sensor for lead (Pb2+) was developed by combining a conducting coating binder (PEDOT:PSS) with a NA2Pyr modified electrode (NA2Pyr/GCE). The sensor exhibited high sensitivity and a wide linear dynamic range.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Sirajul Haq, Maria Rashid, Farid Menaa, Nadia Shahzad, Muhammad Imran Shahzad, Sulaiman Y. M. Alfaifi, O. Madkhali, Mahmood D. Aljabri, Misbah Ashravi, Roaa A. Tayeb, Mohammed M. Rahman
Summary: Graphene oxide (GO) was prepared using modified Hummer's method and thermally reduced, while the tri-metallic nanocomposite was prepared by ex-situ hybridization. Calcination at 450 degrees C increased the degree of crystallinity and crystallite size. Morphological changes were examined using scanning electron microscopy (SEM) and surface functional moieties were identified using Fourier transform infrared (FTIR) spectroscopy. The antibacterial and antioxidant activities of the samples increased with sample dose in the reaction.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Umer Shahzad, Hadi M. Marwani, Mohsin Saeed, Abdullah M. Asiri, Mohammed M. Rahman
Summary: Due to their unique two-dimensional layered microstructure, MXenes are considered promising candidates for addressing energy and environmental issues, thanks to their numerous functionalities on the surface and excellent electrical, thermal, and optical features. Altering the dimensions, structure, surface chemistry, and chemical composition of MXenes can enhance their energy conversion and storage capabilities. Therefore, it is crucial to understand the relationship between structure and property from an applied perspective. This study reviews the synthesis, properties, and potential applications of MXenes and discusses their structural, chemical, optical, mechanical, and thermal properties, as well as their applications in photocatalysis, gas sensing, supercapacitors, electrocatalysis, and environmental remediation. It also highlights the progress and future prospects of MXene-based composites, providing valuable insights for scientists in academia and material sciences.
Article
Chemistry, Multidisciplinary
K. Rudresha, A. Zahir Hussain, C. R. Ravikumar, M. R. Anil Kumar, A. Naveen Kumar, A. S. Manjunatha, H. P. Nagaswarupa, Shilpa Amulya, H. C. Ananda Murthy, Mireia Mallandrich Miret, Abul Kalam Azad, O. Madkhali, Mahmood D. Aljabri, Hadi M. Marwani, Mohammed M. Rahman
Summary: Pure CuO and CuO-ZnO nanocomposites were successfully prepared using ultrasound-assisted probe sonication method. The crystallite size of the samples ranged from 25 to 31 nm according to XRD patterns. The energy band gap values of the nanocomposites were calculated to be between 2.15 and 2.48 eV. Photocatalytic degradation of Direct Green and Fast Blue dyes was assessed under UV light irradiation, and improved redox potential output was observed in the electrode crafted with graphite powder in 0.1 N HCl electrolyte solution.
Article
Environmental Sciences
Nadjem Lakhdari, Delloula Lakhdari, Mohammed Berkani, Yasser Vasseghian, Fatsah Moulai, Mohammed M. Rahman, Rabah Boukherroub, Tejraj M. Aminabhavi
Summary: NiFe-PANI nanocomposites were synthesized and used for efficient photocatalytic degradation of diclofenac sodium (DCF) in water sources. The nanocomposites showed a stable and superior photocatalytic efficiency, even after cycles of recycling.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Chemistry, Multidisciplinary
Shariqah Hijazi, Adil Shafi Ganie, Mohammed M. Rahman, Wajaht A. Shah
Summary: In this study, a highly functionalized and florescent carbon-quantum-dot based ferric ion sensor was prepared from a plant extract without using any oxidizing or passivating agent. The sensor demonstrated good surface functionality, hydrophilicity, and optical properties, and showed selective fluorescence quenching behavior towards ferric ions.
ENVIRONMENTAL SCIENCE-NANO
(2023)
