Article
Engineering, Environmental
Wen He, Han Qiang, Shuang Liang, Feiyu Guo, Rui Wang, Jizhou Cao, Zhihao Guo, Qunyan Pang, Bairen Wei, Jiawei Sun
Summary: A novel strategy to convert natural wood into aerogel-based electrode material with high performance has been developed. This nanocellulose-based material possesses high specific surface area, biodegradability, and superior mechanical strength, and meets the requirements of high-energy density storage devices for thick electrodes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yiwen Zhang, Min Zhang, Zhengbo Han, Shijun Huang, Daqiang Yuan, Weiping Su
Summary: A porous organic polymer-supported Pd catalyst was reported, which can efficiently convert methane to a methanol precursor at 80 degrees Celsius under atmospheric pressure, with high catalytic activity and reusability for at least five runs. The catalyst has good affinity for methane uptake and homogeneous distribution of Pd2+ on the support, contributing to its high catalytic performance in methane conversion.
Article
Chemistry, Physical
Yu Hao, Shaohua Chen, Luming Wu, Rui Chen, Pingchuan Sun, Tiehong Chen
Summary: The hierarchically porous silica was synthesized using a polyelectrolyte-surfactant mesomorphous complex templating method, and then used as a carrier to prepare Pt/xCe/NKM-5 catalyst for toluene catalytic combustion. The Pt/30Ce/NKM-5 catalyst exhibited the most excellent catalytic activity, attributed to the synergy effect of the hierarchical pore structure and the metal-support interaction.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Yuqing Li, Sha Liu, Shan Tao, Yan Zhu, Qiming Zhao
Summary: A novel metal-free, reusable, and green catalytic system comprising hydrothermal carbon microspheres supporting N-hydroxyphthalimide was developed and successfully employed in the aerobic oxidation of alcohol, achieving superior performance and versatile catalytic effect for diversified alcohols.
Article
Multidisciplinary Sciences
Rola Mohammad Al Soubaihi, Khaled Mohammad Saoud, Ahmed Awadallah-F, Ahmed Mohamed Elkhatat, Shaheen A. Al-Muhtaseb, Joydeep Dutta
Summary: The oxidation of CO to CO2 via molecular rearrangements induced by catalytic metal atoms with oxygen intermediates is extensively studied in heterogeneous catalysis. This reaction is essential for reducing greenhouse gas emissions, particularly in low-temperature CO oxidation in vehicle catalytic converters. The catalytic activity of the palladium-supported silica aerogel (Pd/SiO2) catalyst was enhanced after the first cycle, attributed to the reconditioning of its pores. The presence of oxide forms of palladium in the SiO2 structure influenced the catalyst's performance by increasing the frequency of active sites. Additionally, the adsorption of CO2 onto Pd/SiO2 was evaluated, and the Langmuir model was employed to study the equilibrium adsorption behavior. Overall, the mesoporous Pd/SiO2 aerogel shows promise as a material for CO removal and CO2 capture at low temperatures.
Article
Energy & Fuels
M. Selim Cogenli, Ayse Bayrakceken Yurtcan
Summary: Supported catalysts are widely used in fuel cells, and platinum nanoparticles are preferred as they have superior properties. Carbon black has commonly been used as a support material, but it is easily affected by the operating conditions. Graphene aerogels (GA) have recently been discovered to be important graphene-based materials in nanotechnology and are being investigated as support materials. In this study, carbon black was used together with GA and heteroatom-doped GA to synthesize three different hybrid carbon-supported Pt nanoparticles. The Pt/BGA-C catalyst showed the highest catalytic activity for both formic acid and methanol oxidation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Xuejiao Zhou, Sichen Li, Maolin Zhang, Xiaoyan Yuan, Junwu Wen, He Xi, Hongjing Wu, Xiaohua Ma
Summary: In this study, MXene/PEO aerogels with a two-hierarchically porous structure were successfully fabricated. The 3D porous network of MXene/PEO aerogels was assembled by MXene layers featuring a secondary pore structure, which is unique compared to previous studies. The microstructure of MXene/PEO aerogels, and thus their complex permittivity and impedance matching, can be controlled by the amount of added PEO. The resulting MXene/PEO aerogels exhibited excellent electromagnetic wave absorption performance, with a broad effective absorption bandwidth of 5.20 GHz and a minimum reflection loss value of -50.8 dB.
Article
Chemistry, Physical
Yi Song, Wei Li, Yanan Ma, Shaoru Tang, Haimeng Wang, Qian Wang
Summary: A facile strategy to fabricate hierarchical porous carbon nanospheres with isolated single-atom iron sites was presented, showing excellent electrocatalytic performance towards oxygen reduction reaction. The catalyst exhibited superior performance compared to commercial Pt/C catalysts and showed promising potential for applications in metal-air batteries and fuel cells for sustainable energy conversion and storage.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Environmental
Min-Yeong Kim, Honghyun Park, Ju-Yeong Lee, Da Jung Park, Joo-Yul Lee, Nosang Vincent Myung, Kyu Hwan Lee
Summary: Three-dimensional hierarchically porous nanoelectrodes consisting of Pd nanoparticles embedded in PEI-reduced graphene oxide aerogel have been engineered for the detection of BPA and H2O2. The abundance of positive charges in PEI enables the formation of 3D porous structures by tethering to RGA, while the amine groups in PEI anchor the Pd NPs, ensuring their uniform dispersion and preserving the 3D porous structure. The unique structure provides highly electrocatalytically active sites for BPA oxidation and H2O2 reduction. The modified electrode exhibits low detection limits and excellent reusability when applied to real environmental and biological samples.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Li Zhang, Haitao Yu, Shengguang Gao, Huaqing Wang, Zhiwei He, Kun Huang
Summary: Pd nanoparticles supported by yolk-shell magnetic porous organic nanospheres exhibit high catalytic performance and excellent magnetic recyclability, allowing for rapid separation and recovery in various reactions using external magnetic fields.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Ralitsa Velinova, Anton Naydenov, Diana Kichukova, Ventsislav Tumbalev, Genoveva Atanasova, Daniela Kovacheva, Ivanka Spassova
Summary: This work presents Pd-containing catalysts for the complete oxidation of VOCs with enhanced low-temperature activity. The catalysts, composed of reduced graphene oxide (RGO) and alumina, show long-term stability and the ability to completely oxidize various VOCs and CO at low temperatures (100-350°C). The optimal Pd/PdO ratio for high activity and stability is found to be close to 1:1.
Article
Chemistry, Multidisciplinary
Li Zhou, Shuren He, Xiaohong Xu, Guangwu Li, Chuancheng Jia
Summary: This article presents a convenient strategy for constructing atomically dispersed palladium catalyst on layered potassium titanate, which enhances the interaction between the TiO6 layer and palladium atoms. The presence of K+ ions prevents agglomeration and promotes the activation of molecular oxygen, thereby enhancing catalytic oxidation activity.
Article
Engineering, Environmental
Yan Qin, Chunlong Xue, Haoran Yu, Yutong Wen, Lina Zhang, Ying Li
Summary: This paper presents a novel hierarchical graphene aerogel with inter-connected micro-/nano-scale pore structure generated by a bubble and nanoparticles template, showing high absorption and mechanical performance. Due to its high compressibility and adhesion properties, it has great potential for efficient organic solvent recovery and fog water collection.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Rukiye Babacan Tosun, Kadriye Ozlem Hamaloglu, Cengiz Kavakli, Pinar Akkas Kavakli, Ali Tuncel
Summary: A reusable catalyst with dual active center was synthesized for the first time, using iridium oxide nanoparticles immobilized on monodisperse porous manganese oxide microspheres. The catalyst showed maximum activity in water oxidation when synthesized with Mn5O8 microspheres, and the catalytic activity was correlated with the oxidation states of manganese oxide. Oxygen evolution up to 244 mmol was achieved in 30 min, with maximum TON and TOF numbers obtained as 298 and 557 h(-1) respectively, demonstrating excellent reusability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Shuang Zong, Juan Du, Aibing Chen, Xueqing Gao, Xinying Liu, Linda L. Jewell
Summary: This study demonstrates a green and straightforward silica-assisted strategy to construct hierarchically porous carbon nanofibers (HPCF) with tunable morphologies. The optimized HPCF material exhibits high specific surface area and gravimetric capacitance, as well as ultra-long cycling stability in a supercapacitor. Furthermore, it shows great potential for practical applications, as evidenced by effortlessly lighting up light-emitting diodes.
JOURNAL OF POWER SOURCES
(2022)
Article
Engineering, Environmental
Rola Mohammad Al Soubaihi, Khaled Mohammad Saoud, Joydeep Dutta
Summary: This study reports on the low-temperature carbon monoxide (CO) oxidation using a silver/silica aerogel (Ag/SiO2 AG) catalyst. The catalyst was prepared via a sol-gel synthesis followed by supercritical ethanol drying, resulting in a highly stable and sinterproof catalyst with easy reactant diffusion. The Ag/SiO2 AG catalyst exhibited enhanced catalytic activity due to the prevention of silver nanoparticles agglomeration and the facilitation of well-dispersed active sites, leading to improved mass heat transfer. The catalyst's pretreatment conditions played a crucial role in achieving high CO conversion efficiency at low light-off temperatures, and the active sites responsible for the enhanced catalytic behavior were identified as Ag0.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Xingyan Zhang, Maria Isabel Alvarado-Avila, You Liu, Dongkun Yu, Fei Ye, Joydeep Dutta
Summary: This study presents a simple growth strategy to obtain hierarchical P(Ni, Co, Fe) modified electrodes by phosphating a core/shell composite of nickel-cobalt (NiCo) Prussian blue analogues. The hybrid electrode exhibits high specific capacitance, excellent rate capability, and improved cycling stability. Furthermore, it shows excellent performance in the oxygen evolution reaction and overall water splitting.
ELECTROCHIMICA ACTA
(2023)
Article
Electrochemistry
Johan Nordstrand, Esteban Toledo-Carrillo, Joydeep Dutta
Summary: Capacitive deionization (CDI) is a promising technique for purifying water by eliminating ions. Recent experiments have shown a natural imbalance in anion/cation adsorption even for solutions containing only sodium and chloride, and suggested a connection with Faradaic leakages. This study presents a new circuit model that considers leakages, separately accounts for leakages on both electrodes, and incorporates different leakage resistances. The model allows analysis and quantification of the influence of leakage resistance and other material properties on adsorption imbalance. Based on these findings, a multi-electrode (ME) device design is proposed to tune or eliminate the adsorption imbalance by distributing voltage across the electrodes appropriately.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Johan Nordstrand, Lea Zuili, Joydeep Dutta
Summary: Electrochemical deionization devices, such as capacitive deionization (CDI), are essential for global freshwater requirements, particularly for desalination of brackish water. The current study extends an electrolytic capacitor (ELC) model to improve stability and efficiency of CDI systems. The newly implemented strategies and theoretical extensions allow for the first fully coupled and spatiotemporal three-dimensional (3D) CDI model. The study investigates a flow-through CDI device structure and finds that asymmetric designs may still perform reasonably well in normal operating conditions.
Article
Thermodynamics
Wujun Wang, Fei Ye, Joydeep Dutta, Bjorn Laumert
Summary: Spectral hemispherical emissivity is a critical property for radiation heat transfer in high-temperature solar thermal applications. This study systematically investigates the photothermal performances and stability of oxidized surfaces of three commonly used chromia-forming alloys. The results indicate the potential of these alloys, especially SS 253MA, for solar-thermal applications.
APPLIED THERMAL ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Santosh Kumar, Jyotismita Konwar, Manashi Das Purkayastha, Sweety Kalita, Avik Mukherjee, Joydeep Dutta
Summary: Food processing waste and by-products can be utilized for manufacturing high-value products, such as pectin extraction from citrus fruit peel and fruit pomace. Conventional extraction methods using acid, alkali, and chelating agents have been used extensively, but advanced extraction technologies like enzyme, microwave, and supercritical water extraction are preferred due to their energy efficiency and high-quality product. This review compares the efficiency, quality, and functionality of different extraction techniques.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Dongkun Yu, Indra Bhusan Basumatary, Santosh Kumar, Fei Ye, Joydeep Dutta
Summary: Benzophenone-3 grafted chitosan (CS-BP-3) was synthesized and used as an antibacterial coating for the first time. The grafting mechanism, chemical structure, and thermal stability of CS-BP-3 were studied. The CS-BP-3 coating demonstrated UV blocking property, surface features, optical and thermal stability, and antibacterial activity against both Gram-negative and Gram-positive bacteria, making it potentially applicable in food packaging.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Electrochemistry
Johan Nordstrand, Joydeep Dutta
Summary: In this study, a flow-through bipolar CDI design is presented, which significantly improves salt adsorption rate and ion transport compared to previous designs. The removal of internal compartments lowers resistance, resulting in advantages that outweigh the potential energy cost.
ELECTROCHIMICA ACTA
(2023)
Article
Nuclear Science & Technology
Ramzan Akhtar, Shahid Latif, Syed Aizaz Ali Shah, Shaukat Saeed, Abdul Aziz
Summary: Amberlite IRN-78 resin with iron was used as a hybrid resin for silica removal from borated water in nuclear power plants. The hybrid resin contained 0.84 wt % iron compounds. In batch experiments, 1 g of the hybrid resin removed 60 mg silica from 1 ppm borated water in 120 min. The efficiency of the hybrid material depended on resin quantity, silica concentration, and pH, and Freundlich and Temkin isothermal adsorption played dominant roles.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Fozia Bibi, Rafaqat Hussain, Naseem Iqbal, Shaukat Saeed, Muhammad Waseem, Eslam B. Elkaeed, Murefah Mana Al-Anazy, Sirajul Haq
Summary: This study synthesized magnetic activated carbon (MAC) as an efficient adsorbent material using the hydrothermal method. The adsorption behavior of As(III) onto MAC was examined, and it was found that MCNa had a removal efficiency of 99%. The pseudo 2nd-order kinetics and Langmuir model were applicable to the adsorption process.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Editorial Material
Environmental Sciences
George Triantafyllou, George Triantaphyllidis, Annika Pollani, Jun She, Joydeep Dutta, Michael St. John, Marco Faimali, Roy Brouwer, Pavel Stoev
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Rola Mohammad Al Soubaihi, Khaled Mohammad Saoud, Ahmed Awadallah-F, Ahmed Mohamed Elkhatat, Shaheen A. Al-Muhtaseb, Joydeep Dutta
Summary: The oxidation of CO to CO2 via molecular rearrangements induced by catalytic metal atoms with oxygen intermediates is extensively studied in heterogeneous catalysis. This reaction is essential for reducing greenhouse gas emissions, particularly in low-temperature CO oxidation in vehicle catalytic converters. The catalytic activity of the palladium-supported silica aerogel (Pd/SiO2) catalyst was enhanced after the first cycle, attributed to the reconditioning of its pores. The presence of oxide forms of palladium in the SiO2 structure influenced the catalyst's performance by increasing the frequency of active sites. Additionally, the adsorption of CO2 onto Pd/SiO2 was evaluated, and the Langmuir model was employed to study the equilibrium adsorption behavior. Overall, the mesoporous Pd/SiO2 aerogel shows promise as a material for CO removal and CO2 capture at low temperatures.
Article
Chemistry, Physical
Biswanath Das, Esteban A. Toledo-Carrillo, Guoqi Li, Jonas Stahle, Thomas Thersleff, Jianhong Chen, Lin Li, Fei Ye, Adam Slabon, Mats Gothelid, Tsu-Chien Weng, Jodie A. Yuwono, Priyank V. Kumar, Oscar Verho, Markus D. Karkas, Joydeep Dutta, Bjorn Akermark
Summary: In this study, a bifunctional and electrochemically regenerable molecular electrode was successfully developed for the stable production of hydrogen. By anchoring a highly active ruthenium electrocatalyst onto modified fluorine-doped carbon cloth, the electrode exhibited high activity for both oxygen evolution reaction and hydrogen evolution reaction in acidic conditions. The electrode design showed excellent electrochemical regeneration performance after prolonged use.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Maria Isabel Alvarado-Avila, Stefano De Luca, Ulrica Edlund, Fei Ye, Joydeep Dutta
Summary: This study proposes a sustainable method for hydrogen production using sunlight and cellulose as sacrificial agents during the photocatalytic water splitting process. The concentration of cellulose, pH of the system, and Pt loading were found to be important parameters affecting hydrogen production efficiency. The presence of specific molecular elements such as hemicellulose and xyloglucan significantly increased the hydrogen production rate. Carboxymethylation and TEMPO-oxidation of cellulosic biomass resulted in more stable suspensions with higher rates of hydrogen production. The results suggest that cellulosic biomass can be an attractive alternative for the photocatalytic splitting of water for hydrogen production.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Applied
Dongkun Yu, Indra Bhusan Basumatary, You Liu, Xingyan Zhang, Santosh Kumar, Fei Ye, Joydeep Dutta
Summary: This study reports a method to enhance the antimicrobial properties of chitosan coating by loading photocatalyst ZnO-SnOx nanoparticles onto chitosan matrix. The results show that ZnO-SnOx has a better inhibitory effect on bacteria compared to chitosan alone, making the chitosan nanocomposite coating a potential material for food packaging.
PROGRESS IN ORGANIC COATINGS
(2024)
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)
