Article
Agricultural Engineering
Varuna Watwe, Sunil Kulkarni, Preeti Kulkarni
Summary: This study proposes the development of a low-cost, renewable, and porous adsorbent derived from Ficus benjamina leaves for removing cationic dyes from wastewater. The adsorbent was characterized and found to have small pore size, high volume, and large surface area. The optimal pH for adsorption varied for different dyes, and the adsorption mechanism was determined to be a two-body interaction. The pulverized dry leaves of Ficus benjamina showed great potential as a batch adsorbent for cationic dyes in wastewater.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Environmental Sciences
Saeed Ullah Jan, Aziz Ahmad, Adnan Ali Khan, Saad Melhi, Iftikhar Ahmad, Guohua Sun, Cheng-Meng Chen, Rashid Ahmad
Summary: The high-porosity coal-based activated carbon is effective in adsorbing azo dye, with high surface charge and maximum dye uptake under acidic conditions. Thermodynamic parameters indicate a spontaneous, endothermic, and feasible adsorption mechanism. Computational study shows that dye sorption onto AC in a specific configuration is more effective, confirmed by atomic charge transfer phenomenon.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Bingbing Yu, Yao Chen, Lijun Zhu, Mengmeng Ban, Li Yang, Yeda Zeng, Shijie Li, Chunzhi Tang, Danyan Zhang, Xiaoqing Chen
Summary: The purpose of this research was to develop an efficient and non-destructive method using magnetic chitosan microspheres (MCM) for decolorizing polysaccharides extracted from Isaria cicadae Miquel. The optimal decolorization parameters were determined to be MCM amount of 8.0%, adsorption temperature of 48 degrees C, adsorption time of 82 min, and pH of 7. The adsorption mechanism involved multiple-diffusion steps and the MCM adsorption process was found to be spontaneous and endothermic.
Article
Environmental Sciences
Venkata Subbaiah Munagapati, Hsin-Yu Wen, Yarramuthi Vijaya, Jet-Chau Wen, Jhy-Horng Wen, Zhong Tian, Guda Mallikarjuna Reddy, Jarem Raul Garcia
Summary: The study focused on utilizing avocado seed to synthesize an adsorbent for removing Acid Yellow 17 and Amaranth anionic dyes from aqueous solutions. The research filled a gap in the literature by introducing a chemically modified adsorbent synthesis, significantly enhancing the adsorption efficiency of the selected dyes.
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2021)
Article
Biochemistry & Molecular Biology
Ubaid Ur Rahman, Muhammad Humayun, Abbas Khan, Saima Farooq, Muhammad Sadiq, Mohamed Bououdina, Nasrullah Shah
Summary: This research focuses on the isolation and modification of cellulose for the removal of organic pollutants. The cellulose fibers collected from Olive Europa plant were purified and divided into three parts: thermally activated cellulose, chemically modified cellulose, and un-functionalized cellulose. Thermally activated cellulose showed the highest efficiency in removing the dye.
Article
Engineering, Chemical
Xiaodong Yang, Xueqin Shao, Jin Tong, Jinfeng Zhou, Ying Feng, Rui Chen, Qiang Yang, Ye Han, Xizhen Yang, Lili Wang, Xuewen Ma, Zhongqing Fan, Zhi Song, Andrew R. Zimmerman, Bin Gao
Summary: This study investigated a facile and environmentally-friendly method to synthesize a porous Na-bentonite/hickory-biochar composite sorbent from hickory waste biomass. The composite sorbents showed increased microporosity and O-containing functional groups. The composite prepared with 10% biomass by weight and at 600°C exhibited the highest adsorption capacity for Eriochrome Blue Black R (EBBR) anionic organic dyes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Environmental Sciences
Avik Kumar Dhar, Humayra Akhter Himu, Maitry Bhattacharjee, Md Golam Mostufa, Fahmida Parvin
Summary: In recent decades, the release of pollutants into aquatic systems from increased industrial, agricultural, and domestic activities has created a need for reliable and environmentally friendly methods of removal. Bentonite clays have emerged as a cost-effective and sustainable solution in wastewater treatment, offering superior properties such as high adsorption capacity and chemical stability.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Xiuwu Liu, Yuxing Wang, Xiaoyuan Cui, Shijie Zhu, Jilin Cao
Summary: A low-cost adsorbent made from natural and modified gibbsite was evaluated for defluoridation. The best conditions for fluorine removal were determined, and the performances of natural and modified gibbsite were examined using various analytical methods. The pseudo-second-order kinetic model was found to accurately describe the defluorination process of both types of gibbsite.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2021)
Article
Chemistry, Multidisciplinary
Xuefeng Tong, Jingjing Zhang, Qibin Chen, Honglai Liu
Summary: The ZIF-8-GMCS composite effectively removed Congo red from aqueous solution, with a higher maximum adsorption capacity than most magnetic adsorbents. The adsorption process was mainly influenced by electrostatic, hydrogen bonding, coordination, and pi-pi stacking interactions.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Environmental Sciences
Monalisha Behera, Nisha Kumari, Kaisar Raza, Ritu Singh
Summary: A novel magnetite nanochain adsorbent functionalized with glutathione was prepared through a wet reduction method and successfully used for the removal of dyes from aqueous solutions. The adsorbent showed excellent removal efficiency and reusability.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Textiles
Yang Liu, Liangjun Xia, Heng Guo, Aming Wang, Jinbang Hu, Wen Zhang, Weilin Xu, Yunli Wang
Summary: This study carried out salt-free dyeing experiments on carboxymethyl cotton fabric modified with sodium chloroacetate, and demonstrated the successful adsorption of cationic dyes on the modified cotton fabric, although the dyeing fastness was low. The adsorption thermodynamics and kinetics were investigated, with the findings showing that the adsorption kinetics followed the pseudo-second-order kinetic model and the adsorption isotherm was of the Langmuir type.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Engineering, Chemical
Ruba Munir, Khuram Ali, Syed Abbas Zilqurnain Naqvi, Muhammad Aamer Maqsood, Muhammad Zeeshan Bashir, Saima Noreen
Summary: The study successfully synthesized zinc oxide, copper oxide, manganese dioxide, and magnesium oxide nanoparticles from Leucaena leucocephala leaves for the removal of Reactive Golden Yellow-145 and Direct Red-31 dyes. The nanoparticles showed high adsorption capacities for both dyes. The study also investigated the effects of surfactants and electrolytes on dye adsorption.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Gholamreza Ebrahimzadeh-Rajaei
Summary: This study investigated the adsorption of reactive red-P2B dye on montmorillonite clay as a cost-effective inorganic adsorbent. The montmorillonite clay was characterized using various analytical techniques. Factors such as pH, adsorbent dosage, initial concentration, and contact time were evaluated. The adsorption capacity of the dye decreased with increasing pH and temperature, and the Freundlich model provided the best fit for the adsorption data.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Chemical
Qiushi Jiang, Chaoyue Zhao, Zhaolian Han, Guixia Yang, Nan Qu, Lianzhi Sun, Weiping Li, Mingyu Wang, Zhiqiang Cheng
Summary: This study successfully synthesized three amino-functionalized polyacrylonitrile/bentonite composite membranes and investigated their adsorption process for the removal of Pb2+ and Congo Red from water. The functionalized membrane materials had more functional groups and stronger wettability. The modified PAN/BT membranes exhibited excellent adsorption capacities and were in accordance with the Langmuir model and pseudo-second-order kinetics. The N-PAN/BT membranes showed selective adsorption potential for anionic and cationic dyes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Haijie He, Erpei Xu, Zhanhong Qiu, Tao Wu, Shifang Wang, Yuhua Lu, Guannian Chen
Summary: This study investigated the adsorption of phenol onto cetyltrimethylammonium bromide modified bentonite (OMB). The results showed that the adsorption rate of phenol was positively correlated with the initial concentration, and the maximum adsorption capacity was 10.1 mg/g. The pseudo-second-order kinetic model was found to better describe the adsorption kinetics. Additionally, the properties of OMB samples with different adsorption times were analyzed using SEM and XRD.
Article
Chemistry, Analytical
Muhammad Altaf Nazir, Tayyaba Najam, Kinza Zarin, Khurram Shahzad, Muhammad Sufyan Javed, Muhammad Jamshaid, Muhammad Aswad Bashir, Syed Shoaib Ahmad Shah, Aziz Ur Rehman
Summary: ZIF-67 and Ni-doped ZIF-67 are robust and porous adsorbents that can effectively adsorb organic dyes from water, with the Ni-doped ZIF-67 nanocomposite showing the best adsorption performance under mild acidic conditions.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Environmental Sciences
Iqra Mahboob, Iqrash Shafiq, Sumeer Shafique, Parveen Akhter, Mamoona Munir, Muhammad Saeed, Muhammad Shahid Nazir, Um-e-Salma Amjad, Farrukh Jamil, Nabeel Ahmad, Young -Kwon Park, Murid Hussain
Summary: A novel Ag3VO4/KIT-6 nanocomposite photocatalyst with high surface area and visible light response has been successfully fabricated. The nanocomposite exhibited superior degradation capability for Congo Red, reaching up to 96.49%, which was around three times the pure Ag3VO4. The synthesized material followed a pseudo first order kinetic model for the degradation process. The study also investigated the commercial applicability and proposed a possible degradation pathway for Congo Red.
Article
Energy & Fuels
Mamoona Munir, Muhammad Saeed, Mushtaq Ahmad, Amir Waseem, Mustafa Alsaady, Saira Asif, Anas Ahmed, Mohd Shariq Khan, Awais Bokhari, Muhammad Mubashir, Lai Fatt Chuah, Pau Loke Show
Summary: The study explores the potential of Carthamus lanatus L. seed oil as a non-edible waste feedstock for biodiesel production using a novel, green, and recyclable catalyst. The biodiesel produced meets international standards and exhibits excellent reusability. This research highlights the importance of sustainable and green technologies in addressing global energy and environmental challenges.
Review
Chemistry, Physical
Muhammad Sufyan Javed, Tayyaba Najam, Iftikhar Hussain, Muhammad Idrees, Awais Ahmad, Muhammad Imran, Syed Shoaib Ahmad Shah, Rafael Luque, Weihua Han
Summary: Zn-ion hybrid supercapacitors (ZHSCs) combine Zn-ion batteries with supercapacitors to meet the energy and power needs of portable devices and electric automobiles. This review provides an in-depth investigation and summarization of the charge storage mechanisms, advantages/disadvantages, recent development of cathode materials, and new design of device fabrications for ZHSCs, highlighting the importance of developing new cathode materials.
ADVANCED ENERGY MATERIALS
(2023)
Review
Biochemistry & Molecular Biology
Syed Shoaib Ahmad Shah, Naseem Ahmad Khan, Muhammad Imran, Muhammad Rashid, Muhammad Khurram Tufail, Aziz ur Rehman, Georgia Balkourani, Manzar Sohail, Tayyaba Najam, Panagiotis Tsiakaras
Summary: The hydrogen evolution reaction (HER) is a promising technology for delivering clean energy using renewable sources. The use of transition metal tellurides (TMTs) and transition metal phosphides (TMPs) as electrocatalysts has emerged as a highly efficient, low-cost, and stable alternative to platinum-based catalysts. This review focuses on the progress made in the past decade, providing a detailed summary of their development and offering guidelines for the design of new electrocatalysts for energy conversion and storage technologies.
Article
Chemistry, Analytical
Misbah Malik, Sobhy M. Ibrahim, Asif A. Tahir, Muhammad Altaf Nazir, Syed Shoaib Ahmad Shah, Muhammad Ahmad Wattoo, Rehana Kousar, Aziz Ur Rehman
Summary: The photocatalytic degradation of nicotine in aqueous medium was studied using g-C3N4/ZnO-W/Sn-x composites. The synthesized composites showed a proficient blending of g-C3N4, metal oxide and the metal used as dopant. The optical analysis demonstrated band gap tailoring with increased dopant metal content, which inhibited electron hole pair recombination and resulted in increased production of ROS species, leading to significant increase in photoactive nicotine degradation.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Muhammad Saeed, Aswa Firdous, Muhammad Saleh Zaman, Fatima Izhar, Mubeshar Riaz, Sabah Haider, Muzamil Majeed, Shahzaib Tariq
Summary: Nowadays, the desulfurization of fuel oil has become a global concern due to strict industrial and environmental regulations. Hydrodesulfurization (HDS) is commonly used in oil refineries for low sulfur oil production, but it is not effective for the removal of specific sulfur compounds. Therefore, alternative methods such as adsorptive desulfurization (ADS) and oxidative desulfurization (ODS) have been developed, with metal-organic frameworks (MOFs) and their composites showing promise as catalysts and adsorbents.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Misbah Malik, Sobhy M. Ibrahim, Muhammad Altaf Nazir, Asif A. Tahir, Muhammad Khurram Tufail, Syed Shoaib Ahmad Shah, Aqsa Anum, Muhammad Ahmad Wattoo, Aziz Ur Rehman
Summary: Robust hybrid g-C3N4/ZnO-W/Co-x heterojunction composites were synthesized using simple and low-cost coprecipitation methods. Characterization techniques such as FTIR, XRD, FESEM, and EDX were used to investigate the fabricated catalyst. The as-synthesized g-C3N4/ZnO-W/Co-0.010 composite showed impressive photocatalytic performance, achieving 90% degradation of methylene blue (MB) under visible light within 90 minutes of irradiation. Furthermore, the synthesized composites exhibited good recyclability and mechanical stability over five cycles.
Article
Engineering, Environmental
Muhammad Aizaz Ud Din, Syed Shoaib Ahmad Shah, Muhammad Sufyan Javed, Manzar Sohail, Aziz ur Rehman, Muhammad Altaf Nazir, Mohammed A. Assiri, Tayyaba Najam, Nanpu Cheng
Summary: Single atom catalysts (SACs) have high catalytic performance and selectivity. MXenes, as a new 2D material with rich chelating sites, serve as ideal supports for SACs. This paper summarizes the structural characteristics and preparation strategies of MXene, and discusses its energy conversion applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Syed Shoaib Ahmad Shah, Muhammad Altaf Nazir, Azhar Mahmood, Manzar Sohail, Aziz Ur Rehman, Muhammad Khurram Tufail, Tayyaba Najam, Muhammad Sufyan Javed, Sayed M. Eldin, Md Rezaur Rahman, Mohammed M. Rahman
Summary: This article summarizes the recent trends in developing 2D electrically conductive MOFs and their potential applications in various fields, providing future perspectives.
Article
Chemistry, Inorganic & Nuclear
Aqsa Anum, Sobhy M. Ibrahim, Asif A. Tahir, Muhammad Altaf Nazir, Misbah Malik, Syed Shoaib Ahmad Shah, Amber Ehsan, Muhammad Ahmad Wattoo, Aziz Ur Rehman
Summary: Nicotine, discharged into the environment due to its widespread use, has become a global issue. A magnetic sulfur doped metal-organic framework-235 has been synthesized and applied as a photocatalyst for the elimination of nicotine. The Ni-Mo.S2/MOF-235@g-C3N4 photocatalyst showed the highest activity, eliminating 98% of the sample.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Tasmia Irshad, Muhammad Saeed, Vaneeza Aiman, Muntaha Ali, Hadia Ahsan, Shahzad Ameen, Mamoona Munir
Summary: This review explores the synthesis of metal-organic framework (MOF)-based electrode materials, their synthetic methods, and applications in batteries. The findings demonstrate that MOFs have the potential to revolutionize the field of batteries and open new possibilities for next-generation batteries with improved performance and safety. However, further research is needed to overcome challenges and fully realize the potential of MOFs in batteries.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Muhammad Bilal, Amna Altaf, Ehmen Bint-E-Khalid, Hafiza Komal Zafar, Nimrah Tahir, Ayman Nafady, Md A. Wahab, Syed Shoaib Ahmad Shah, Tayyaba Najam, Manzar Sohail
Summary: Developing an efficient and non-precious bifunctional catalyst for water splitting and organic effluent degradation is a challenging task. This study presents a highly efficient bifunctional nanocatalyst based on NiCo2O4, synthesized using a simple co-precipitation method. The optimized catalyst exhibited excellent catalytic activity for the electrochemical oxygen evolution reaction (OER) and simultaneous methylene blue (MB) dye degradation. The results suggest that this catalyst holds great promise for addressing the challenges of wastewater treatment and energy generation.
Article
Chemistry, Multidisciplinary
Muhammad Zeeshan Abid, Khezina Rafiq, Abdul Rauf, Syed Shoaib Ahmad Shah, Rongchao Jin, Ejaz Hussain
Summary: In this work, a Co/Na synergism in Co@Na-BiVO4 microstructures was found to enhance the photocatalytic performance of bismuth vanadate (BiVO4) catalysts. The Co@Na-BiVO4 photocatalysts exhibited higher activity than bare BiVO4, Co-BiVO4, or Na-BiVO4 due to the synergistic role of Co and Na contents, leading to improved charge separation and more efficient electron transportation to the active sites during the photoreaction.
NANOSCALE ADVANCES
(2023)
Article
Multidisciplinary Sciences
Sabah Haider, Maria Zaib, Umar Farooq, Muhammad Saeed, Muhammad Salman, Rabia Akram Bajwa
Summary: Electrochemical sensors based on carbon paste electrodes modified with Zinc oxide (ZC) and Zinc Oxide-Copper-Benzene Tricarboxylic acid (ZBC) were fabricated for voltammetric estimation of toxic Cd (II) ions. The synthesized materials were characterized and mixed with appropriate amounts of graphite powder and paraffin oil to generate a variety of modified carbon paste electrodes. The optimized conditions for Cd(II) ions determination were determined using potentiostat workstation. ZBC showed better performance than ZC, with lower LOQ and LOD, larger surface area, and smaller electrode modifier amount.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Applied
Lulu Wan, Gan Ye, Yuying Chang, Zhaohan Yang, Guangming Shi, Qiuli Zhang, Jin Wang
Summary: This study developed an efficient approach to upgrade the oxidative desulfurization (ODS) performance of Zr-MOFs with proton stimulation. Experimental results showed that the introduction of protons can significantly improve the ODS efficiency. This work provides a facile and efficient strategy for enhancing the ODS performance of pristine MOFs.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Qiqi Lu, Xiu-Zhi Wei, Qi Zhang, Xinghua Zhang, Lungang Chen, Jianguo Liu, Yubao Chen, Longlong Ma
Summary: The application of Pd-M bimetallic clusters in the selective hydrogenation reaction was investigated, and the Pd0.6Ni@S-1 catalyst was found to exhibit high selectivity in the conversion of phenylacetylene to styrene. The confinement effect of zeolite inhibited over-hydrogenation and improved the stability of the catalysts. Furthermore, the solvent properties also influenced the product distribution.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Review
Chemistry, Applied
Bo Li, Lumin Hong, Changdi Jing, Xianyang Yue, Huabo Huang, Qianqian Jiang, Jianguo Tang
Summary: MOF materials with adjustable pore structure and polymetallic sites have been explored as electrocatalysts for OER. Bimetallic materials show higher electrocatalytic activity than monometallic materials, while carbon-coated and doped MOF catalysts exhibit stable and good OER activity. The synergistic interaction between polymetallic active sites effectively improves the intrinsic activity of MOF on OER.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shichun Gu, Ruyi Wang, Junxiong Zhang, Hairong Dong, Liping Deng, Xue Wang, Yapeng He
Summary: In this study, monodispersed hollow mesoporous organosilica nanospheres with controlled core cavity and mesoporous shell were successfully synthesized. These hollow nanospheres showed a high adsorption capacity for Pb2+ in water solution and exhibited acceptable recycling and stability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Lucie Havelkova, Bogdana Bashta, Michaela Vankova, Jiri Zednik, Jiri Brus, Jan Svoboda, Alice Vagenknechtova, Jan Sedlacek
Summary: An atom-economic one-step chain-growth coordination homopolymerization providing high yields of functionalized hyper-cross-linked polyacetylenes with a permanent micro/mesoporous texture and a BET area of up to 1062 m2/g is reported. The homopolymerization is highly compatible with the heteroatom groups of the monomers and allows the preparation of well-defined porous networks with a wide spectrum of univalent groups.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Shirui Pang, Yuxin Liu, Zhe Zhang, Yuxin Li, Chunguang Li, Zhan Shi, Shouhua Feng
Summary: This study focuses on using a functional separator to suppress the shuttle effect of soluble lithium polysulfides in Li-S batteries. It is found that the functionalized sulfonic acid group not only accelerates the conduction of lithium ions, but also repels polysulfide anions through electrostatic interactions. The performance of the batteries is significantly improved with the use of this functionalized separator.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Pingping Li, Lei Han, Donghun Kim, Kemal Celebi
Summary: This study presents a fast synthetic strategy for the preparation of high-quality platelike MFI crystals using a thin-wall tubular reactor. The strategy is efficient, time-saving, and can be optimized, making it applicable to the preparation and optimization of other important materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Haitao Yin, Wei Wang, Yuxin Li, Hu Wen, Shuang Chen, Nanzhe Jiang
Summary: This study presents a template-free and solid-state-like crystallisation method for the synthesis of ZSM-5 zeolite, which can be scaled-up in production. Mechanical mixing of starting material components improves the dispersion of materials, leading to ZSM-5 zeolite with high crystallinity and size uniformity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Congli Li, Jiang Wang, Zhenfei Wang, Jinxiang Dong, Qi Shi
Summary: This study investigates the evolution and autoreduction behavior of Cu species in CuCl/NaY adsorbent during vacuum thermal activation. It is found that Cu species migrate from supercages to the nearby plane of the six-membered ring connecting the supercage and sod cage during vacuum activation. At 150 degrees C, vacuum autoreduction occurs, resulting in the formation of Cu+Cl- species. The results provide reference for the preparation of pi-complex adsorbents.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Irena Khatrin, Iman Abdullah, Alan J. Mccue, Yuni K. Krisnandi
Summary: Hierarchical porous system with two types of mesopores provides a solution to the diffusion limitation in conventional zeolites. Cobalt oxide impregnated hierarchical ZSM-5 zeolite samples with intra- and inter-crystalline mesopores were synthesized using two different strategies. The physicochemical properties of the modified catalysts were analyzed, revealing distinct features given by the two mesoporous configurations. Catalytic activity analysis showed that Co-oxide/ZSM-5 with inter-crystalline mesopores exhibited higher activity in methane partial oxidation reaction compared to Co-oxide/ZSM-5 with intra-crystalline mesopores.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Nataliia Reinders, Martin Durovic, Pavla Honcova, Zaneta Dohnalova, Jana Luxova, Stanislav Slang, Jhonatan Rodriguez-Pereira, Petra S. Sulcova
Summary: This study presents a new method for preparing a microporous Ni2P/C catalyst with high catalytic activity. The redox reaction and carbon matrix formation during high-temperature treatment contribute to the stability and activity of the catalyst. Experimental and analytical results suggest that the microporous structure of the composite plays a crucial role in its catalytic performance. These findings are important for practical applications of efficient hydrogen production by water electrolysis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Ana Raquel Bertao, Viktoriya Ivasiv, Cristina Almeida-Aguiar, Patricia R. Correia, Antonio M. Fonseca, Manuel Banobre-Lopez, Fatima Baltazar, Isabel C. Neves
Summary: This study developed a zeolite-based delivery system (ZDS) using silver and 5-Fluorouracil as antimicrobial and antineoplastic agents. The ZDS was characterized and its antimicrobial properties were investigated, showing better antibacterial effectiveness for the ZDS containing both silver and 5-FU.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Naonobu Katada, Nobuki Ozawa, Etsushi Tsuji, Keigo Kanehara, Akiho Otsuka, Taiga Sakamoto, Kirari Umezawa, Hitoshi Matsubara, Satoshi Suganuma, Momoji Kubo
Summary: First principles calculations were used to investigate the pathway for methylation of benzene with methane catalyzed by MFI type zeolite-supported Co species. The strong adsorption of benzene on Co is found to lower the activation energy for methane dissociation and promote the formation of toluene precursor. The activation energy of methane dissociation is also affected by the Al-Al distance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Yuan Liu, An T. Ta, Kyoung Chul Park, Shenyang Hu, Natalia B. Shustova, Simon R. Phillpot
Summary: We use density functional theory to investigate the interactions of cerium, americium, and curium cations with crown ethers. Our results demonstrate that crown ethers can capture cerium, americium, and curium ions, and modifying the crown ether structure by substituting nitrogen atoms for oxygen atoms significantly increases their binding energies with radionuclides.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
Article
Chemistry, Applied
Zhengwu Peng, Shixing Wang, Yihui Wu, Xiang Liu, Hongliang Liu, Dekun Zhang, Likang Fu
Summary: An efficient adsorbent for recovery of germanium was prepared and characterized in this study. The adsorption behavior of Ge(IV) on the adsorbent was analyzed, and the results showed that it follows pseudo-secondary kinetic model and Langmuir isotherm model. The adsorbent exhibited good anionic anti-interference ability and can still maintain high adsorption efficiency after repeated adsorption.
MICROPOROUS AND MESOPOROUS MATERIALS
(2024)
