Article
Engineering, Environmental
Yunpei Cui, Teng Wang, Jiayou Liu, Lizhen Hu, Qianqian Nie, Zhongchao Tan, Hesheng Yu
Summary: Composite materials (GQDs/BWO) were prepared by combining graphene quantum dots (GQDs) with bismuth tungstate (Bi2WO6) to enhance photocatalytic degradation of nitric oxide. The introduction of GQDs in the composite catalyst significantly improved the photocatalytic performance, attributed to enhanced electron-hole separation efficiency and inhibition of recombination, resulting from increased surface area and light absorption.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Li Zhang, Yuhan Li, Qin Li, Jiajie Fan, Sonia A. C. Carabineiro, Kangle Lv
Summary: This review summarizes the methods and strategies for modifying Bi-based photocatalysts, including defect regulation, exposed facet control, etc. It focuses on the application and reaction mechanisms of BiOCl photocatalysts.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Xiaoping Tao, Hongpeng Zhou, Chengbo Zhang, Na Ta, Rengui Li, Can Li
Summary: A novel triclinic-phase bismuth chromate (Bi2CrO6) with wide light-harvesting ranges and suitable band structures has been reported as a promising semiconductor photocatalyst. It exhibits excellent photocatalytic water oxidation and hydrogen production performance under visible light, and can be used to construct a stable visible-light-driven Z-scheme overall water splitting system. This work provides a potential semiconductor material for photocatalytic and photo-electrochemical solar energy conversion with wide-range light harvesting capability.
ADVANCED MATERIALS
(2023)
Article
Environmental Sciences
Srinivasan Balakumar, Narayanan Mahesh, M. Kamaraj, S. Shyamalagowri, J. Manjunathan, S. Murugesan, J. Aravind, P. Suresh Babu
Summary: Semiconductor photocatalysis is considered a viable solution for addressing environmental pollution. Bismuth (Bi) metal oxides have shown great potential as direct plasmonic photocatalysts or cocatalysts, enhancing charge separation and improving photocatalytic activity. Bi-based photocatalysts have gained attention for their applications in pollutant remediation and energy concepts. This article discusses and summarizes the unique properties, synthesis methods, and major Bi-based Z-scheme photocatalysts for water treatment. It also reviews the impact of Bi2XO6 in energy storage devices and solar energy conversion, and briefly explores the future development and challenges of Z-scheme-based Bi2XO6 photocatalysts.
Review
Environmental Sciences
Michael Zuarez-Chamba, Saravanan Rajendran, Miguel Herrera-Robledo, A. K. Priya, Carlos Navas-Cardenas
Summary: Bi-based photocatalysts have been shown to be effective for water disinfection under natural solar light. This study summarizes the latest research on using different Bi-based micro and nano structures for photocatalytic inactivation of pathogenic bacteria under visible light irradiation. The study analyzes the mechanisms of photocatalytic bacterial inactivation and explores various modifications to improve their performance. Factors that affect the photocatalytic activity of these materials in real conditions and at a large scale have been studied. The study also explores current alternatives for enhancing antibacterial activity and reusing Bi-based materials.
ENVIRONMENTAL RESEARCH
(2022)
Review
Chemistry, Inorganic & Nuclear
Shailja Mittal, Seema Garg, Hema Bhandari, Vivek Sharma
Summary: Fuel crisis and atmospheric pollution have been major environmental issues. Photocatalysis is a promising method for solving these issues, especially using Bismuth Ferrite (BiFeO3) as a catalyst. Its unique properties make it effective in remediation of air and water pollutants.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Wangchen Huo, Weina Xu, Ziyang Guo, Yuxin Zhang, Fan Dong
Summary: By adjusting the halogen ratio in bismuth oxyhalides, the thermodynamic energy barrier for photocatalytic nitric oxide oxidation can be lowered, while establishing a relationship between lattice strain and surface reaction process.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Energy & Fuels
Priyadarshi K. Ray, Ritik Mohanty, Kulamani Parida
Summary: The composites of NiCo LDH and graphene show superior performance in supercapacitor application, with high specific energy, specific capacitance, and specific power.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Polymer Science
Chien-Hong Lin, Ming-Yen Chien, Yi-Cih Chuang, Chao-Chi Lai, Yi-Ming Sun, Ting-Yu Liu
Summary: The addition of graphene oxide nanosheets significantly improves the mechanical properties of the PSF membrane, enhances the coulombic efficiency of the VRFB, and demonstrates long-term chemical stability.
Article
Chemistry, Physical
Mengdi Wang, Xingyu Liu, Xiang Wu
Summary: It is crucial to design catalysts with unique spatial structures and excellent electrochemical performance. Although non-noble metal catalysts are less active than Pt-based ones, their catalytic ability can be enhanced by the synergistic effect of different components. In this study, several dendritic-like CoP@NiCo-LDH hetero-catalysts were synthesized using a multi-step growth route. The CoP@NiCo LDH-100 samples exhibited superior performance in OER and HER compared to commercial IrO2 (OER) and Pt/C (HER) in alkaline electrolyte. Density functional theory (DFT) calculation showed that the composites had low adsorption energy and tunable charge redistribution at the interface. The enhanced conductivity of the catalyst was confirmed by an increased Fermi-level PDOS value. The upward shift of the D-band center facilitated the desorption of intermediates and accelerated the hydrolysis dissociation process, leading to improved HER activity and reduced overall electrolysis voltage.
Article
Environmental Sciences
Malathi Arumugam, Kamala-Kannan Seralathan, Supareak Praserthdam, Muhammad Tahir, Piyasan Praserthdam
Summary: In this study, a novel graphene aerogel/bismuth oxyiodide (GA/BiOI) composite photocatalyst was successfully synthesized and tested for the efficient removal of methyl orange (MO) from wastewater under visible light. The composite exhibited enhanced photocatalytic activity, stability, and potential as an eco-friendly photocatalyst.
Article
Chemistry, Multidisciplinary
S. Rai, R. Bhujel, M. Khadka, R. L. Chetry, B. P. Swain, J. Biswas
Summary: In this study, ZnO/reduced graphene oxide (ZnG) nanohybrid was successfully fabricated using a non-hazardous material, ascorbic acid. The nanohybrid exhibited excellent morphology, structure, and performance, with a specific capacitance value of 345 Fg(-1) and good capacitance retention after 1,000 cycles in an electrolyte of 0.5 M H2SO4.
MATERIALS TODAY CHEMISTRY
(2021)
Review
Chemistry, Physical
Kejia Wu, Minglong Cao, Qiang Zeng, Xuehui Li
Summary: Lignin, as a major component of woody biomass, is a natural organic polymer and the only abundant natural renewable resource with aromatic nucleus. Chemical catalysis induced depolymerization and photocatalysis and electrocatalysis are effective methods for lignin utilization. In this contribution, the radical and (photo)electron transfer induced reaction mechanisms of lignin depolymerization are discussed, along with the challenges and opportunities of photo(electro)catalysis in lignin valorization.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
M. Mohebinia, X. Xing, G. Yang, D. Wang, C. Solares-Bockmon, Z. Ren, J. Bao
Summary: Enhancing water oxidation through the introduction of an oxygen evolution reaction (OER) cocatalyst improves the efficiency of photocatalytic synthesis of ammonia. In this study, cobalt oxyhydroxide was employed as an OER cocatalyst to enhance ammonia generation, and a significant improvement in the ammonia production rate was achieved. The correlation between OER from water and ammonia generation was observed, indicating the potential of this strategy for better N-2 fixation photocatalyst design.
MATERIALS TODAY CHEMISTRY
(2022)
Review
Chemistry, Physical
Sanjay Kumar, Himanshi, Jyoti Prakash, Ankit Verma, Suman, Rohit Jasrotia, Abhishek Kandwal, Ritesh Verma, Sachin Kumar Godara, M. A. Majeed Khan, Saad. M. M. Alshehri, Jahangeer Ahmed
Summary: Graphene-based materials, known for their remarkable electrical, mechanical, and optical traits, have gained significant scientific interest in modern technology research. In this review paper, different synthesis methods for extracting graphene and its derivatives are discussed, along with their structural, mechanical, and optical characteristics. The application of graphene-based composites in environmental purification techniques such as filtration, adsorption, and photocatalysis is extensively reviewed, highlighting the challenges and opportunities for advanced environmental applications.
Article
Environmental Sciences
Asif Khan, Muhammad Naeem, Ivar Zekker, Muhammad Balal Arian, Greg Michalski, Abbas Khan, Nasrullah Shah, Syed Zeeshan, Hameed Ul Haq, Fazle Subhan, Muhammad Ikram, Muhammad Ishaq Ali Shah, Idrees Khan, Luqman Ali Shah, Muhammad Zahoor, Amama Khurshed
Summary: This study analyzed the eutrophication caused by nitrate as an important water pollutant in different water sources in Pakistan. Statistical approaches were used to determine the association of nitrate with other parameters in groundwater. Different physicochemical parameters were studied, and hierarchical cluster analysis was conducted to find links between groundwater quality factors.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Energy & Fuels
Khawaja Haider Ali, Mohammad Abusara, Asif Ali Tahir, Saptarshi Das
Summary: Real-time energy management in grid-connected microgrids is challenging due to intermittent renewable energy sources, load variations, and variable grid tariffs. This paper proposes a novel dual-layer Q-learning strategy, where the first layer produces directive commands offline using forecasted data, and the second layer refines these commands every 15 minutes by considering real-time changes in the RES and load demand.
Article
Chemistry, Physical
Aasif Helal, Mohammed Ahmed Sanhoob, Bosirul Hoque, Muhammad Usman, Md. Hasan Zahir
Summary: In this paper, a bimetallic Metal-Organic Framework (MOF) CoNiBTC was used to fabricate bimetallic nanoalloys CoNi@C evenly dispersed in carbon shells. The nanomaterials were characterized by various techniques and used as catalysts for the synthesis of benzimidazole and methanation of CO2 with high yields and selectivity.
Article
Engineering, Environmental
Haidong Bian, Zhixuan Chen, Tongyuan Chen, Muhammad Humayun, Binbin Zhou, Wenchao Liao, Zhangjian Li, Zheming Zhang, Chundong Wang, Chen Liu
Summary: In this study, an anodization technique was introduced to quickly construct Co-Mo-based bimetallic oxides with simplified process and reduced time and energy consumption. The prepared Co/CoO/Co2Mo3O8 exhibited enhanced HER performance compared to Co(OH)2/CoMoO4 and CoO/CoMoO4, showing low overpotential and high Tafel slope in 1 M KOH. The recovered Co/CoO/Co2Mo3O8 also demonstrated reproductive HER performance, indicating the high efficiency and sustainability of the proposed anodization strategy. These findings provide a new and efficient route to construct high-stable bi-metallic or multi-metallic oxides for large-scale energy conversion applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Inorganic & Nuclear
Chundong Wang, Muhammad Humayun, Damien P. Debecker, Ying Wu
Summary: This article focuses on the concept of layered double hydroxides (LDHs) confining single atoms for oxygen evolution reaction (OER) and summarizes recent advances in the rational design of LDHs with confined single atoms for OER. The article introduces the structure and fundamentals of OER in LDHs and discusses the use of in situ X-ray absorption spectroscopy for studying the metal-support interaction and identifying active sites during OER. The conclusion and future perspectives are also provided.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Muhammad Waseem, Fahad Iqbal, Muhammad Humayun, Muhammad Umais Latif, Tayyaba Javed, Megersa Kebede Leta
Summary: This study assessed soil erosion risk in the Jhelum River watershed in Azad Jammu and Kashmir (AJ&K) using the Revised Universal Soil Loss Equation (RUSLE). The RUSLE parameters were computed and integrated with physical factors to generate soil erosion risk and intensity maps. The findings of this study will guide the management of the Mangla watershed.
APPLIED SCIENCES-BASEL
(2023)
Article
Nanoscience & Nanotechnology
Manzoor Hussain, Touseef Rehan, Mazhar Ul-Islam, Omer Shehzad, Abbas Khan, Muhammad Wajid Ullah, Ayesha Baig, Guang Yang, Nasrullah Shah
Summary: A core-shell particles latex composite hydrogel (PEG-CS) was prepared for controlled drug release of ciprofloxacin. Compared to the control PEGDA-based hydrogel, the PEG-CS hydrogel exhibited higher drug loading efficiency. The kinetic and equilibrium adsorption models suggested that the drug loading followed pseudo-second-order kinetics and the Langmuir adsorption isotherm, respectively. The findings indicate that the fabricated PEG-CS hydrogel could be an efficient material for sustained drug release.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Protity Saha, Syed Shaheen Shah, Muhammad Ali, M. Nasiruzzaman Shaikh, Md. Abdul Aziz, A. J. Saleh Ahammad
Summary: In recent years, there has been a growing demand for efficient energy storage solutions due to the rapid growth in renewable energy applications. Rechargeable zinc-air batteries (ZABs) have emerged as an attractive choice for green energy storage technology. Cobalt oxide-based electrocatalysts on the air electrode have received significant attention for their exceptional features. This review focuses on the latest advancements in cobalt oxide-based electrocatalysts with bifunctional properties for high-performing ZABs, along with an introduction of fundamental aspects of ZABs and an examination of morphological variations and synthesis processes.
Article
Chemistry, Inorganic & Nuclear
Abdelaziz Abboudi, Sabrina Iaiche, Abdelkader Djelloul, Abdelouahed Chala, Fouzi Kezzoula, Faycal Bensouici, Mohamed Bououdina, Muhammad Humayun
Summary: Bare titanium oxide (TiO2) and fluorine (F) doped TiO2 thin films were successfully fabricated on soda lime glass substrates using the sol-gel dip-coating technique. The influence of hydrofluoric acid (HF) concentration on the structural, optical, and photocatalytic properties of the films was investigated. Characterization techniques such as X-ray diffraction, scanning electron microscopy, X-ray photo-electron spectroscopy, energy dispersive X-ray spectroscopy, atomic force microscopy, and UV-visible spectrophotometry were employed. The results showed the presence of highly crystalline anatase phase TiO2, cracked surfaces in the SEM images, and a decrease in roughness with increasing HF concentration in the AFM images.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Review
Green & Sustainable Science & Technology
Adeel Bashir, Sikandar Khan, Naveed Iqbal, Salem Bashmal, Sami Ullah, Muhammad Usman
Summary: Unmanned underwater vehicles (UUVs) are increasingly popular due to their advantages in various applications. However, they also face challenges in communication, navigation, power requirements, maintenance, and payload limitations. Designing a controller that can ensure optimal performance under these conditions is a challenging task. This paper presents a comprehensive review and comparison of different control system design algorithms for UUVs, analyzing the advantages and disadvantages of each algorithm to facilitate the selection of a suitable algorithm for UUV control system design.
Review
Energy & Fuels
Dan Tang, Guang-Lei Tan, Guo-Wei Li, Jin-Guang Liang, Shah Masood Ahmad, Ayesha Bahadur, Muhammad Humayun, Habib Ullah, Abbas Khan, M. Bououdina
Summary: Hydrogen is a clean, versatile, and energy-dense fuel that has the potential to play a key role in a low-carbon energy future. This paper reviews the state-of-the-art in hydrogen generation methods and storage technologies, including water electrolysis, gasification, dark fermentation, steam reforming, photocatalytic water splitting, and water thermolysis for generation, and compression, liquefaction, liquid organic carriers, and solid-state storage for storage. The development of efficient and cost-effective hydrogen generation and storage technologies is essential for the widespread adoption of hydrogen as a clean energy source.
JOURNAL OF ENERGY STORAGE
(2023)
Review
Chemistry, Analytical
Mariana Bocsa, Stelian Pintea, Ildiko Lung, Ocsana Opris, Adina Stegarescu, Muhammad Humayun, Mohamed Bououdina, Maria-Loredana Soran, Stefano Bellucci
Summary: Water contamination is a global issue that requires action to prevent pollution and decontaminate water sources. Biochar is an environmentally friendly material that can be used to remove pollutants from water. Additionally, biochar can be used to remove phosphorus from wastewater, which is crucial for agricultural activities.
Article
Chemistry, Multidisciplinary
Saima Qureshi, Duncan Gregory, Asif Ali Tahir, Safeer Ahmed
Summary: A ZrO2 added alpha-Fe2O3 photoanode that can split water at low applied potential was reported. The modified alpha-Fe2O3 photoanode showed increased photocurrent density and oxygen production compared to the pristine hematite photoanode.
Review
Chemistry, Multidisciplinary
Abdul Jabbar Khan, Muhammad Sajjad, Shaukat Khan, Muhammad Khan, Abdul Mateen, Syed Shaheen Shah, Numan Arshid, Liang He, Zeyu Ma, Ling Gao, Guowei Zhao
Summary: As supercapacitor technology advances, there is a growing demand for electrode materials with high energy/power densities and cycling stability. Tellurium and telluride-based materials, with their high conductivity and volumetric capacity, have garnered increasing interest in energy storage applications. This review provides a comprehensive understanding of their properties, charge storage mechanisms, synthesis strategies, and applications in supercapacitors. The challenges and prospects for improving telluride-based supercapacitive performance are also discussed.
Article
Chemistry, Physical
Ibrahim Khan, Syed Shaheen Shah, Abdulmajeed Hendi, Muhammad Ashraf, Younghyun Cho, Shahid Ali, Sanghyuk Wooh
Summary: Hybrid supercapacitors, functioning as both batteries and supercapacitors, have limitations in large-scale applications due to low conductivity and electrical stability. A carbon coating over mixed-phase titanium dioxide, formed by introducing carbon-rich polyacrylonitrile block copolymer, improves the performance and cycling stability of the hybrid supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
