Article
Materials Science, Multidisciplinary
Yan Chen, Ao Li, Xiuli Fu, Zhijian Peng
Summary: The study successfully prepared novel (N,F)-co-doped TiO2-delta nanofibers and demonstrated their excellent photocatalytic ability in degrading environmental pollutants under visible light irradiation.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Yan Chen, Ao Li, Xiuli Fu, Zhijian Peng
Summary: This study proposes a simple and feasible method for preparing titanium oxide photocatalysts with reduced band gap, high electrical conductivity, and good chemical and structural stability. By co-doping N and F and oxygen deficiency, the visible light absorption and photocatalytic activity can be significantly enhanced. This work provides an important method for designing and fabricating high-performance titanium oxide photocatalysts.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Marta Zaborowska, Weronika Smok, Tomasz Tanski
Summary: The main goal of this study was to produce ceramic nanofibers by electrospinning and thermal treatment, and investigate the effect of calcination temperature on the properties of zirconia nanostructures. The nanofibers showed a crystalline structure with monoclinic and tetragonal phases. The optical band gap was found to be 4.9 eV and 5.6 eV for samples calcined at 500 and 600 degrees C, respectively. The nanofibers with lower energy gap and higher specific surface area exhibited significant photocatalytic activity.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yan Chen, Ao Li, Xiuli Fu, Zhijian Peng
Summary: A novel nanocomposite of (N,F)-co-doped TiO2-delta beads loaded onto C nanofibers was prepared using a three-step process, including electrospinning, solvothermal synthesis, and thermal treatment. The as-prepared nano-composite exhibited excellent photocatalytic activity for the degradation of pollutants under visible light irradiation. This was attributed to the reduced band gap, elemental doping of N and F, improved electrical conduction, and oxygen defects.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Xiaoyan Yuan, Wenrui Huang, Luo Kong, Shouwu Guo, Yongliang Cheng
Summary: Ditungsten carbide (W2C) embedded in carbon nanofibers (W2C/C NFs) shows excellent electrocatalytic performance, especially in alkaline media. The one-dimensional nanostructure and strong coupling of W2C within the carbon matrix synergistically enhance electron transport and active sites, leading to significant improvement in hydrogen evolution reaction (HER) activity.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Hassan M. A. Hassan, Ibrahim Hotan Alsohaimi, M. R. El-Aassar, Mohammed A. El-Hashemy, Mohamed Y. El-Sayed, N. F. Alotaibi, Mohamed A. Betiha, Mohammed Alsuhybani, Raghad Ayed Alenazi
Summary: Electrospun TiO2-graphene oxide nanofibers exhibit improved mechanical properties and have potential applications in water remediation and organic transformation reactions.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Avigail Landman, Shabtai Hadash, Gennady E. Shter, Alon Ben-Azaria, Hen Dotan, Avner Rothschild, Gideon S. Grader
Summary: The study demonstrated the performance of electrospun nickel/nickel hydroxide porous electrodes in decoupled water splitting, showing advantages of high efficiency, high process efficiency, and high current density.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Polymer Science
Ahmed Abutaleb
Summary: Non-noble CuxNi1-x (x = 0, 0.1, 0,2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1) alloy nanoparticles supported on PVDF-HFP nanofibers were successfully fabricated through electrospinning and in situ reduction. The catalysts exhibited the formation of bimetallic NiCu alloy supported on PVDF-HFP and showed better catalytic activity for SBH hydrolysis compared to monometallic counterparts. The Cu-0.7 Ni-0.3/PVDF-HFP catalyst demonstrated the best catalytic performance with low activation energy and satisfying stability.
Review
Energy & Fuels
Prasanta Kumar Panda, Benudhar Sahoo, Seeram Ramakrishna
Summary: The world is searching for clean and green energy alternatives to fossil fuels in order to reduce the greenhouse effect and climate change threats. Promising sources of energy alternatives include solar energy, wind energy, and hydrogen gas-based energy. However, the storage and transportation of hydrogen gas face major challenges due to its low volumetric density and explosive nature. Based on numerous studies, high surface area nanoporous solids like carbon and metal-organic framework (MOF)-based nanofiber materials are found to be suitable for hydrogen storage applications. The production and usage of electrospun polymer nanofibers and MOFs for hydrogen storage and transportation are presented in this article.
Article
Polymer Science
Alberto Rubin Pedrazzo, Claudio Cecone, Sara Morandi, Maela Manzoli, Pierangiola Bracco, Marco Zanetti
Summary: The study investigated the effect of different templating polymers (PVP, PEO, and PVAc) on the morphologies and particle size distributions of SnO2, showing that the final oxide's morphology and crystallite size can be altered by using different polymers.
Article
Chemistry, Physical
Jayasundera Bandara, Chathurika Rajapaksha, C. A. Jayasundera, H. Tan, C. -F. Yan
Summary: Surface-oxygen vacancies were generated to enhance the near-IR light response of SrTiO3 photocatalyst. The hydrogen production rates for SrTiO3-Ov under full solar spectrum, visible and IR radiation were 100, 25 and 10 mlg(-1)h(-1) respectively. The mid-gap Ov and Ti3+ states in SrTiO3-Ov are key factors in the origin of the near-IR responses of the catalyst and the feasibility of using low-photonic-energy IR light to produce hydrogen by water splitting was demonstrated.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Tianjin Zhang, Dianhui Wang, Dezhi Wang, Xinli Liu, Zhuangzhi Wu, Xiao Liu, Wenbin Tang, Yuchen Lan, Changlai Yuan, Fei Liu
Summary: In this study, novel perovskite ferroelectric (1-x)KNbO3-xBi(Ni1/2Ti1/2)O-3 nanofibers were synthesized for the first time using electrospinning, exhibiting optimal photocatalytic activity. First principles calculations revealed the midgap structure in the material, and polarization was found to significantly affect the hydrogen production rate.
APPLIED SURFACE SCIENCE
(2022)
Review
Engineering, Environmental
Rongfu Peng, Shuai Zhang, Yiyuan Yao, Junning Wang, Xinfeng Zhu, Ran Jiang, Jinhui Zhang, Wei Zhang, Chaohai Wang
Summary: Metal-organic frameworks (MOFs) have been widely used in water treatment due to their unique characteristics. However, their application is limited by their form and particle size. Electrospinning can be used to overcome the disadvantages of MOFs and provide a new method for fabricating MOFs fibers.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Khandsuren Badgar, Jozsef Prokisch
Summary: This study aimed to produce electrospun nanofibers from a PVB solution enriched with red and grey selenium nanoparticles. The obtained nanofibers have an average diameter of around 500 nm, a specific surface area of approximately 8 m²/g, and a length of 5093 km/cm³. Depending on the synthesis method, the selenium nanoparticles are located either inside or outside the fiber, making these nanofiber sheets enriched with selenium nanoparticles potential candidates for high-efficiency filter materials and medical applications.
Review
Chemistry, Physical
Longcheng Zhang, Haitao Zhao, Siran Xu, Qian Liu, Tingshuai Li, Yonglan Luo, Shuyan Gao, Xifeng Shi, Abdullah M. Asiri, Xuping Sun
Summary: This review discusses recent progress in electrocatalytic water splitting using advanced electrospun nanomaterials, covering fundamentals, structure design, and electrocatalytic properties. The review highlights the importance of designing 1D nanocatalysts with large surface area, high electronic conductivity, and tunable composition to improve the efficiency of electrochemical water splitting. The future perspectives and challenges in designing next-generation 1D electrospun nanocatalysts for electrochemical water splitting are also outlined.
Article
Environmental Sciences
Hager M. Moustafa, Mohamed S. Mahmoud, Mamdouh M. Nassar
Summary: In this study, nanocomposites of reduced graphene oxide/TiO2 with different percentages were synthesized and characterized. The photocatalytic performance of the nanocomposites for methylene blue decomposition was investigated, and an empirical equation relating the reaction rate constant and dye concentration was proposed. The results showed that the prepared nanocomposites exhibited excellent photocatalytic activity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Debendra Acharya, Ishwor Pathak, Bipeen Dahal, Prakash Chandra Lohani, Roshan Mangal Bhattarai, Alagan Muthurasu, Taewoo Kim, Tae Hoon Ko, Kisan Chhetri, Hak Yong Kim
Summary: The combination of bimetallic oxide nanomaterials and porous carbon materials has significantly contributed to the development of high-performance energy storage devices. Researchers have successfully synthesized porous multimetal nanomaterials using a self-templated metal-organic framework strategy, resulting in excellent electrochemical performance in supercapacitors.
Article
Biochemistry & Molecular Biology
Nasser A. M. Barakat, Osama M. Irfan, Hager M. Moustafa
Summary: H3PO4/KOH combined solution is an effective activation agent for producing activated carbon from rice husk. The mixed agent decomposes chemical compounds on the rice husk char surface and increases the surface area. Both single and mixed activation agents need to have optimized solution volumes for maximum specific capacitance. The proposed activated carbon shows excellent electrochemical performance and stability.
Article
Polymer Science
Nasser A. M. Barakat, Aya Gamil, Ibrahim Ashour, Khalil Abdelrazek Khalil
Summary: Novel (Ca, Mg)CO3&SiO2 NPs-decorated multilayer graphene sheets were successfully prepared from corn stalk pith using a simple alkaline hydrothermal treatment process followed by calcination in an inert atmosphere. The nanocomposite exhibited efficient activity as a photocatalyst for water-splitting reactions under visible light. The study investigated the influence of preparation parameters on the hydrogen evolution rate and found the optimal condition to achieve the maximum hydrogen production rate of 43.35 mmol H-2/gcat.min and an energy-to-hydrogen conversion efficiency of 9%.
Article
Chemistry, Multidisciplinary
Seong-Min Ji, Alagan Muthurasu, Hak Yong Kim
Summary: This work describes a concise method for generating marigold flower-like metal-organic frameworks (MOFs) aided manganese vanadium oxide via a hydrothermal procedure for increased OER activity. As synthesized MOF MnV oxide has a higher surface area due to the 3D flower-like structure, which is reinvented with enhanced electrocatalytic active sites. These distinctive structural features result in remarkable catalytic activity for MOF MnV oxide microflowers towards OER.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Analytical
Mohamed El-Newehy, Badr M. Thamer, Meera Moydeen Abdul Hameed, Hany El-Hamshary
Summary: Poly(vinyl chloride) (PVC) was reinforced with electrospun glass nanofibres (EGN) containing lanthanide-doped aluminate nanoparticles (LANP). The resulting EGN@PVC composites exhibited photochromic and afterglow properties, making them suitable for applications such as smart windows and anti-counterfeiting prints. The EGN@PVC samples showed fluorescence emission with instant reversibility at low concentrations of LANP, while samples with higher phosphor concentrations exhibited persistent phosphorescence emission. The composites also displayed UV-blocking characteristics and improved scratch resistance compared to PVC alone.
Article
Polymer Science
Marwa M. Abdel-Aty, Hassan E. Gomaa, Hany Mohamed Abdu, Radwan A. Almasri, Osama M. Irfan, Nasser A. M. Barakat
Summary: In this study, molybdenum carbide co-catalyst and carbon nanofiber matrix were used to enhance the activity of nickel in methanol electrooxidation. The catalyst was synthesized by calcinating electrospun nanofiber mats composed of molybdenum chloride, nickel acetate, and poly (vinyl alcohol) under vacuum at elevated temperatures. The electrochemical measurements showed that the fabricated composite exhibited specific activity for methanol electrooxidation, with the highest performance achieved using nanofibers obtained from an electrospun solution containing 5% molybdenum precursor.
Review
Energy & Fuels
Kisan Chhetri, Anup Adhikari, Jyotendra Kunwar, Debendra Acharya, Roshan Mangal Bhattarai, Young Sun Mok, Achyut Adhikari, Amar Prasad Yadav, Hak Yong Kim
Summary: Zeolitic Imidazolate Frameworks (ZIFs) and their hybrid composites have shown promising potential in supercapacitors due to their excellent conductivity and high surface area. Pure ZIFs have poor electrochemical performance, but can be improved by mixing with other materials to prepare hybrid composites. ZIFs' porous structure and large surface area make them an ideal template for designing composites with excellent supercapacitor applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Pharmacology & Pharmacy
Zhengchao Yuan, Lixiang Zhang, Hui Zheng, Muhammad Shafiq, Jiahui Song, Binbin Sun, Mohamed EL-Newehy, Hany EL-Hamshary, Yosry Morsi, Chao Huang, Xiumei Mo, Yuan Xu
Summary: This research explored the beneficial effect of electrospun membranes containing zinc oxide nanoparticles (ZnO NPs) on infectious wound healing. The results showed that these membranes had good cytocompatibility, hemostatic effect, and antibacterial effect. They induced rapid hemostasis, wound regeneration, and reduced wound area in animal models. These findings suggest the potential benefits of electrospun membranes containing ZnO NPs for infectious wound healing.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Mohamed El-Newehy, Hany El-Hamshary, Meera Moydeen Abdul Hameed
Summary: Photochromic inks have been widely used for anti-counterfeiting purposes in commercial products, but they have drawbacks such as poor durability and high cost. In this study, novel photochromic nanofibres were developed by immobilizing lanthanide-doped strontium aluminate nanoparticles into cellulose acetate nanofibres. These nanofibres exhibited high reversibility and photostability when exposed to UV light, with different ratios of nanoparticles producing unique emission characteristics.
Article
Materials Science, Multidisciplinary
Mohamed El-Newehy, Badr M. Thamer, Hany El-Hamshary, Meera Moydeen Abdulhameed
Summary: Discharging untreated effluent into water bodies significantly impacts water quality, leading to the spread of waterborne infections and high death rates worldwide. This study aimed to investigate the antimicrobial properties of multi-walled carbon nanotubes (MWCNTs) and their effectiveness in eliminating waterborne bacteria during wastewater treatment. The results showed that MWCNTs exhibited antimicrobial properties and could effectively eliminate selected pathogens, making them a promising solution for controlling waterborne pathogens in wastewater.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Environmental
A. G. Olabi, Mohammad Ali Abdelkareem, Mohamed S. Mahmoud, Khaled Elsaid, Khaled Obaideen, Hegazy Rezk, Tabbi Wilberforce, Tasnim Eisa, Kyu-Jung Chae, Enas Taha Sayed
Summary: The United Nations Sustainable Development Goals (UN-SDGs) offer a unique opportunity to achieve sustainable development and mitigate the impacts of climate change. Decarbonizing the energy system is crucial for achieving energy balance, and green hydrogen has emerged as a promising source in this regard. Therefore, understanding the different production methods, economics, and environmental impacts of green hydrogen is essential for all stakeholders. Additionally, recognizing the role of green hydrogen in achieving the various SDGs is vital for policymakers and decision-makers. This study reviews common hydrogen production methods, investigates the prospects of achieving the SDGs, and presents relevant keywords. Furthermore, it provides a list of indicators (guidelines) to enhance the contribution of green hydrogen to the SDGs and minimize trade-offs.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Review
Biochemistry & Molecular Biology
Xiao Yu, Jie Cui, Yihong Shen, Wanxin Guo, Pengfei Cai, Yujie Chen, Zhengchao Yuan, Mingyue Liu, Mohamed EL-Newehy, Hany EL-Hamshary, Yosry Morsi, Binbin Sun, Muhammad Shafiq, Xiumei Mo
Summary: Tendon is a bundle of collagen fibers connecting muscle to bone, but degeneration and rupture can occur due to overuse or trauma. Developing a scaffold that matches the structure and mechanics of the natural tendon is crucial for successful repair. Various strategies including electrospinning, 3D printing, hydrogels, and microspheres are being explored for tendon repair. With continued advancements in biomaterials and technology, scaffolds have the potential to greatly impact tendon repair applications.
FRONTIERS IN BIOSCIENCE-LANDMARK
(2023)
Article
Materials Science, Biomaterials
Jing Wang, Yuan Liu, Minmin Lv, Xiaoli Zhao, Kwok Fai So, Hui Li, Mohamed EL-Newehy, Hany EL-Hamshary, Yosry Morsi, Xiumei Mo
Summary: An ideal nerve conduit with topological guidance and biochemical and electrical signal transduction mechanisms is needed for the treatment of peripheral nerve injury. In this study, aligned conductive nanofibrous scaffolds were fabricated and loaded with nerve growth factor (NGF) and Lycium barbarum polysaccharides (LBP). LBP accelerated axon regeneration after severe peripheral nerve injury, and the combination of LBP and NGF promoted nerve cell proliferation and neurite outgrowth. Multiwalled carbon nanotubes (MWCNTs) were introduced to increase electrical conductivity and enhance directional growth and neurite extension of neurons. The combination of conductive fibrous scaffolds and electrical stimulation further promoted cell differentiation and axon outgrowth.
REGENERATIVE BIOMATERIALS
(2023)
Article
Materials Science, Biomaterials
Wanxin Guo, Binan Zhao, Muhammad Shafiq, Xiao Yu, Yihong Shen, Jie Cui, Yujie Chen, Pengfei Cai, Zhengchao Yuan, Mohamed EL-Newehy, Hany EL-Hamshary, Yosry Morsi, Binbin Sun, Jianfeng Pan, Xiumei Mo
Summary: The objective of this research was to screen for the effect of different types of bio-elastomers as hemostatic dressings. A PU-TA/Gel sponge was prepared, which showed promising potential in terms of porosity, water absorption ratio, cytocompatibility, hemolysis, clotting time, and wound healing. The sponge rapidly induced stable blood clots and good skin regeneration.
REGENERATIVE BIOMATERIALS
(2023)
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)