Article
Materials Science, Multidisciplinary
Adel Soleimani, Farhid Farahmandghavi, Jalil Morshedian, Jaber Keyvan Rad
Summary: Antibacterial composite polymers with ion-exchangeable zeolite were successfully developed for food packaging. The addition of hydrogen ions improved color stability and transparency. The dispersion of silver ions was improved by the presence of polyethylene-graft-maleic anhydride, while the presence of ethylene vinyl alcohol copolymer led to a droplet-matrix morphology. The composite materials exhibited remarkable antibacterial activity against Escherichia coli and Staphylococcus aureus bacteria.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Adel Soleimani, Farhid Farahmandghavi, Jalil Morshedian, Jaber Keyvan Rad
Summary: In this study, antibacterial composite polymers were prepared for food packaging to inhibit the growth of foodborne pathogens. The results showed that the composite films had reliable optical properties, good antibacterial activity, and potential for advanced antibacterial food packaging.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Physical
Tao Sun, Jiaxiang Wei, Chunyu Zhou, Yuanhui Wang, Zhu Shu, Jun Zhou, Jieyu Chen
Summary: By studying the effect of exchangeable cations on TiO2 photocatalysts supported by zeolite, it was found that the photocatalytic hydrogen evolution activity was significantly enhanced. The photocatalyst with Ca2+ cations showed the highest hydrogen evolution rate and exhibited higher solid-acid concentration and larger surface area, providing more proton sources and active sites for the reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Seohee Yun, Yongjae Lee
Summary: Birnessite is a layered manganese oxide mineral with various interlayer cations and water molecules. Cation substitution can alter its crystal structure and chemical properties. The distribution of interlayer cations and water molecules affects the interlayer spacing and the oxidation state of Mn.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Veselina M. Georgieva, Elliott L. Bruce, Ruxandra G. Chitac, Magdalena M. Lozinska, Anna M. Hall, Claire A. Murray, Ronald Smith, Alessandro Turrina, Paul A. Wright
Summary: The study investigated various forms of merlinoite zeolites and found that the narrow-pore structures formed during dehydration exhibit cooperative adsorption behavior towards CO2, with the pressure and adsorption rate depending on the replacement of different metal ions and the changes in unit cell structure.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Maamon A. Farea, Gita B. Bhanuse, Hamed Y. Mohammed, Mohammed O. Farea, Mohyeddine Sallam, Sumedh M. Shirsat, Meng-Lin Tsai, Mahendra D. Shirsat
Summary: An ultra-high sensitive and selective carbon monoxide (CO) gas sensor was developed using PPy/TiO2 nanocomposite. Compared to the pure PPy sensor, the PPy/TiO2 sensor exhibited a 4-fold enhanced sensitivity with high selectivity. The inclusion of TiO2 in PPy plays a crucial role in improving the performance of the gas sensor.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Applied
Volker Mauer, Hilke Petersen, Christian Blaeker, Christoph Pasel, Claudia Weidenthaler, Dieter Bathen
Summary: This study systematically investigated the energetic properties of cations on LTA zeolites, finding that Ca2+ cations have energetically more valuable adsorption sites compared to Na+ cations. The interaction with the zeolite framework was identified to provide the largest contribution to the energetic values of the various cation sites. The results show an increase in capacity and heat of adsorption up to an exchange rate of 68.6%, followed by a decrease at higher exchange rates.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Organic
I. N. Pavlova, O. S. Travkina, G. F. Garieva, B. I. Kutepov
Summary: The study focuses on the adsorption characteristics of dispersed LSX and X zeolites in Na, Li, K, and Ca forms with high phase purity and almost 100% degree of crystallinity, as well as compares their adsorption of carbon dioxide under different conditions.
PETROLEUM CHEMISTRY
(2021)
Article
Chemistry, Physical
Magdalena Jablonska, Kinga Gora-Marek, Miha Grilc, Paolo Cleto Bruzzese, David Poppitz, Kamila Pyra, Michael Liebau, Andreas Poeppl, Blaz Likozar, Roger Glaeser
Summary: Comparative studies on micro-/mesoporous Cu-containing zeolites ZSM-5 treated by NaOH, TPAOH, or NaOH/TPAOH revealed that Cu-ZSM-5 catalyst showed the highest activity. Co-cations promoted the formation of [Cu-O-Cu](2+) dimers binding strongly with NOx, with a desorption energy barrier of at least 80 kJ mol(-1).
Article
Chemistry, Physical
Tarik Ammouli, Jean-Louis Paillaud, Habiba Nouali, Regis Stephan, Marie-Christine Hanf, Philippe Sonnet, Irena Deroche
Summary: In this study, a combination of atomic-scale computational techniques and experiments was used to investigate water adsorption in potassium-exchanged X-type faujasite. The DFT calculations revealed a heterogeneous adsorbent surface and identified preferential adsorption sites for water molecules. GEMC technique was employed to simulate water adsorption isotherm, and canonical MC simulation was used to describe the microscopic mechanisms of water adsorption at different uptake levels in the K-X zeolite. Results showed that the adsorbed water molecules were primarily located in sodalite cages at low loading, shifting to supercages at higher hydration ratios. Additionally, coordination of water molecules with potassium cations at crystallographic site III (or III') was favored over site II at all hydration ratios.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Engineering, Electrical & Electronic
Vinay Kishnani, Gulshan Verma, Rohit K. Pippara, Anshul Yadav, Pankaj Singh Chauhan, Ankur Gupta
Summary: This study reported an excellent gas sensing performance of nanocomposite films prepared with different materials for carbon monoxide gas sensing. The fabricated SnO2/PANI/Pd film showed the highest sensitivity at ambient temperature, indicating a bright future for gas sensing applications with incredibly high sensitivity towards CO gas.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Multidisciplinary
Nguyen Hoang Luan, Doan Thi Thuy Trang, Nguyen Minh Thuan, Nguyen Thi My Linh, Nguyen Thi Truc Phuong, Ngo Tran Hoang Duong, Nguyen Van Dung, Tran Thuy Tuyet Mai, Nguyen Quang Long
Summary: This study produced shaped zeolite X and Fe3+ ion-exchanged zeolite X in the form of cylinder pellets, with geopolymer as binder. The geopolymerization process maintained the structure of zeolite X. BET analysis showed that GZXFeL3 pellets had higher CO2 adsorption capacities compared to GZX3 pellets. After multiple cycles of adsorption - desorption, the CO2 adsorption capacity of GZXFeL3 pellets decreased by about 10%.
SEPARATION SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Christian Blaeker, Volker Mauer, Christoph Pasel, Frieder Dreisbach, Dieter Bathen
Summary: The aim of this study is to investigate the influence of single, double and triple bonds in hydrocarbons on the mechanisms of adsorption on zeolites. The adsorption behavior of ethane, ethene and ethyne on different adsorbents is studied using adsorption calorimetry. The results show that the number and distribution of cations in zeolites have a significant impact on the adsorption process.
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Hongli Wu, Lu Yao, Chunlian Ding, Xiaoyong Jiang, Weizao Liu
Summary: The Cu-ion exchanged X zeolite catalyst prepared from blast furnace slag, with its ultra-high specific surface area and similar Si/Al ratio to X zeolite, exhibits excellent NH3-SCR activity in the temperature range of 150 degree Celsius to 500 degree Celsius, achieving about 95% of NOx conversion.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Engineering, Environmental
Xiaoyong Jiang, Jie Yang, Ya Liang, Handan Zhang, Yuanqi Zhou, Ren Shan, Qingcai Liu, Weizao Liu, Lu Yao
Summary: Copper ion exchanged zeolite catalysts (Cu-X) prepared from blast furnace slag showed excellent catalytic activity and sulfur tolerance, achieving 84% NO conversion in the presence of 50 ppm SO2. However, excessive copper inhibited the chemical adsorption of SO2 on the active sites.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Md. Azharul Islam, M. J. Ahmed, W. A. Khanday, M. Asif, B. H. Hameed
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2017)
Article
Engineering, Chemical
F. Marrakchi, Muthanna J. Ahmed, W. A. Khanday, M. Asif, B. H. Hameed
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2017)
Article
Energy & Fuels
W. A. Khanday, B. H. Hameed
Article
Agricultural Engineering
W. A. Khanday, M. J. Ahmed, P. U. Okoye, Esam H. Hummadi, B. H. Hameed
BIORESOURCE TECHNOLOGY
(2019)
Article
Green & Sustainable Science & Technology
Patrick U. Okoye, Song Wang, Waheed Ahmad Khanday, Sanxi Li, Tao Tang, Linnan Zhang
Article
Engineering, Environmental
Waheed Ahmad Khanday, Suhail Ahmad Khanday, Mohd Abbas Shah, Mohammed Danish, Patrick U. Okoye
Summary: The microporous erionite-activated carbon (E-AC) composite showed promising potential in removing the doxycycline antibiotic from water, with high monolayer adsorption capacity and efficient removal efficiency. The novel composite synthesis aimed to enhance surface area and increase pollutant removal capacity, paving the way for more cost-effective adsorbents in wastewater treatment.
ENVIRONMENTAL PROCESSES-AN INTERNATIONAL JOURNAL
(2021)
Review
Energy & Fuels
Jude A. Okolie, Jorge Ivan Escobar, Great Umenweke, Waheed Khanday, Patrick U. Okoye
Summary: The use of carbon-based and biomass-derived catalysts for biodiesel production enhances synthesis efficiency. Microfluidic and acoustic reactors can accelerate reaction rates and reduce energy consumption.
Review
Chemistry, Physical
Soumya Ghosh, Alhadji Malloum, Charne Bornman, Amina Othmani, Christian Osagie, Zahra Kashitarash Esfahani, Waheed Ahmad Khanday, Shabnam Ahmadi, Mohammad Hadi Dehghani
Summary: This review reports the efficiency of aniline adsorption from wastewater, with particular focus on the use of Azo-linked porous organic polymers as effective adsorbents. Temperature is identified as the most influential factor affecting adsorption efficiency. Molecular simulations have been conducted to explore potential adsorbents, but there are still unresolved issues to address.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Energy & Fuels
Md Azharul Islam, B. H. Hameed, M. J. Ahmed, W. A. Khanday, Moonis Ali Khan, F. Marrakchi
Summary: Turning fish wastes into value-added products is an economic and eco-friendly approach. In this study, porous carbon-based material derived from fish scale was prepared and its performance in adsorbing tetracycline antibiotic was evaluated. The results showed that the material had high adsorption capacity and rate for tetracycline.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Materials Science, Multidisciplinary
Mohammed Danish, Zhou Pin, Lou Ziyang, Tanweer Ahmad, Shahnaz Majeed, Ahmad Naim Ahmad Yahya, Waheed Ahmad Khanday, H. P. S. Abdul Khalil
Summary: Banana trunk waste was used to produce activated carbons with improved surface area and phosphorus atom dispersion. The production process was optimized through a chemical activation method using phosphoric acid. The activated carbon showed a porous surface with high carbon content and good thermal stability.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Review
Environmental Sciences
Amina Othmani, Abudukeremu Kadier, Raghuveer Singh, Chinenye Adaobi Igwegbe, Mohamed Bouzid, Md Osim Aquatar, Waheed Ahmad Khanday, Million Ebba Bote, Fouad Damiri, Omur Gokkus, Farooq Sher
Summary: This paper provides a comprehensive review of the literature on electrocoagulation (EC) fundamentals, reactor design, process implementation, current challenges, and performance enhancement through coupling EC with important pollutant degradation processes (DPs). The results suggest that optimizing treatment time, current density, pulse frequency, shaking speed, and spaced electrode can improve the efficiency of pollutant removal. Coupling EC with other DPs can further enhance the removal efficiency of organic pollutants and heavy metals.
ENVIRONMENTAL RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Mohammad Rezaei Ardani, Ai Ling Pang, Ujjwal Pal, Muhammad Aniq Shazni Mohammad Haniff, Ahmad Ghadafi Ismail, Azrul Azlan Hamzah, Waheed Ahmad Khanday, Mohsen Ahmadipour
Summary: Nanocomposites of TiO2-MWCNTs were successfully synthesized using ultrasonic-assisted technique. The study investigated the impact of different weight percentages of MWCNTs on the optical, structural, and morphological properties of TiO2. The TiO2/7 wt% MWCNTs nanocomposite exhibited higher photocatalytic performance and lower optical bandgap energy compared to pure TiO2.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Waheed Ahmad Khanday, Suhail Ahmad Khanday, Mohammed Danish, Radha Tomar
Summary: Erionite zeolite was successfully converted into various ion-exchanged forms to be used as catalysts, with excellent activity and stability in the synthesis of 2-methylquinoxaline.
APPLIED SURFACE SCIENCE ADVANCES
(2022)
Article
Engineering, Chemical
Waheed Ahmad Khanday, Suhail Ahmad Khanday, Mohammed Danish
DESALINATION AND WATER TREATMENT
(2020)
Article
Water Resources
Mohammed Danish, Tanweer Ahmad, W. N. A. W. Nadhari, Mehraj Ahmad, Waheed Ahmad Khanday, Lou Ziyang, Zhou Pin
APPLIED WATER SCIENCE
(2018)
