Article
Chemistry, Physical
Burcu Kiren, Nezihe Ayas
Summary: Hydrogen is expected to play a crucial role as an environmentally friendly and flexible energy carrier in future energy systems. This study investigates the effects of catalyst composition and reaction conditions on hydrogen yield in the hydrolysis of NaBH4, and identifies that a catalyst with 40 wt% Ni content exhibits the best performance under specific conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
O. V. Netskina, E. S. Tayban, V. A. Rogov, A. M. Ozerova, S. A. Mukha, V. I. Simagina, O. V. Komova
Summary: In the study, it was found that cobalt catalysts are more active than nickel catalysts in the hydrolysis of sodium borohydride. One reason for the lower activity of nickel catalysts is the presence of hydrogen on its surface, which interferes with reactant adsorption. The addition of cobalt to nickel catalysts can enhance hydrogen generation rate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
A. Kytsya, V Berezovets, Yu Verbovytskyy, L. Bazylyak, V Kordan, I Zavaliy, V. A. Yartys
Summary: In this study, Ni-Co bimetallic nanoparticles were successfully synthesized, and the effects of different Ni contents on particle size and polydispersity were observed. Ni50Co50 showed the highest catalytic activity for the hydrolysis of alkaline NaBH4 solutions. The kinetic studies revealed that the hydrolysis rate increased with higher NaBH4 concentration and decreased with higher pH value of the solution. The activation energy of the reaction decreased with decreasing NaBH4 and catalyst contents.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Valentina G. Minkina, Stanislav I. Shabunya, Vladimir I. Kalinin, Vladimir V. Martynenko
Summary: This study investigated the catalytic hydrolysis of aqueous NaBH4 solutions and found that the catalyst used showed stable catalytic activity. It was also observed that conducting the hydrolysis under near adiabatic conditions significantly reduced the hydrolysis time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Minoo Bagheri, Yeganeh Amidi, Mohammad Yaser Masoomi
Summary: In this study, quasi-ZIF-67 (Q-ZIF-67) with large-scale structural defects was synthesized via controlled thermal partial deligandation. Q-ZIF-67 exhibited enhanced catalytic activity for hydrolysis of NaBH4, generating hydrogen at a high rate under mild conditions. Mechanistic studies revealed the importance of strong acidity for efficient hydrogen generation.
Article
Chemistry, Physical
Tulin Avci Hansu
Summary: A novel RuW/MWCNT catalyst was synthesized successfully for the hydrolysis reaction of NaBH4. The addition of W to Ru on MWCNT support increased the catalyst activity. Surface characterization of the catalyst was performed using SEM-EDX, XRD, XPS, and TEM analysis methods. The hydrolysis performance of RuW/MWCNT catalyst was investigated by studying parameters including temperature, catalyst amount, NaBH4 concentration, and NaOH concentration.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Xiaoteng Min, Dan Chai, Kunpeng Ding, Rui Li, Xiongwen Zhang
Summary: This paper studied the hydrogen generation from the hydrolysis of solid sodium borohydride. A NiCoP/RC catalyst was prepared to accelerate the hydrolysis process. The hydrogen generation rate, reaction temperature, hydrogen output, and water-hydrogen ratio were recorded. Compared to the commonly used cobalt chloride catalyst, the NiCoP/RC catalyst showed superior catalytic activity. The study also discussed the use of citric acid to neutralize alkaline by-products and proposed intermittent water feeding to improve both hydrogen output and water utilization.
Article
Chemistry, Physical
Ferhat O. Baydaroglu, Ercan Ozdemir, Ayse G. Gurek
Summary: In this study, we synthesized surfactant-directed polypyrrole-supported Co-W-B nanoparticles as an efficient catalyst for the hydrolysis of NaBH4. This catalyst showed higher catalytic activity compared to conventional cobalt boride catalysts and exhibited good stability over five cycles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Neslihan Erat, Gamze Bozkurt, Abdulkadir Ozer
Summary: This paper presents the catalytic effect of Co doping on different oxide supports (single, bimetallic, and trimetallic) for the hydrolysis of NaBH4 aqueous solutions. The Co/CuO-NiO-Al2O3 catalyst shows high reaction activity at 25 degrees C and exhibits good reusability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Geo Jong Kim, Hyun Tae Hwang
Summary: Hydrogen from sodium borohydride can be generated by thermolysis or hydrolysis, but both methods have drawbacks such as high temperatures required or safety concerns. A new process, thermal hydrolysis of SBH, is proposed to address these issues and achieve efficient hydrogen production.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Tuqa Majeed Hameed Al-Msrhad, Yilser Devrim, Arife Uzundurukan, Yagmur Budak
Summary: The study investigated hydrogen generation from NaBH4 hydrolysis catalyzed by bimetallic PdRu supported on MWCNT-GNP hybrid material, showing high catalytic activity, low activation energy, and good cycle stability. The catalyst exhibited promising potential for commercial PEMFC applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Review
Chemistry, Physical
Dongyan Xu, Yan Zhang, Qingjie Guo
Summary: This review summarizes recent advances in metallic and nonmetallic catalysts for the alcoholysis of NaBH4, discusses the advantages and disadvantages of various catalysts, and explores the catalytic mechanisms related to NaBH4 methanolysis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Wenkai Huang, Fuhua Xu, Xiang Liu
Summary: Adding nonprecious metal Co or Ni to Ru enhances the H2 generation efficiency synergistically, while alloying with Fe or Cu impedes it. Among them, Co-Ru/C exhibits the highest catalytic activity for H2 generation, with a TOF of 117.69 mol(H2)•molRu-1•min-1, significantly higher than Ru/C's 57.08 mol(H2)•molRu-1•min-1. Moreover, Co-Ru/C shows a TOF of 436.51 mol(H2)•molRu-1•min-1 (96.7 L(H2)•gRu-1•min-1) in the presence of NaOH.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Chao Tang, Guolang Zhou, Jianmei Chen, Jingzhou Yin, Yuxin Li, Cheng Liu, Qiaoqi Li, Tianshi Wang, Ziqiang Wang, Shizheng Wen, Benlin Dai, Feihu Mu, Lili Zhang
Summary: Developing nonprecious metal catalysts with fast charge transferability, abundant active sites, and easy recovery is important for hydrogen production from sodium borohydride hydrolysis in alkaline solutions. The magnetically separated nitrogen-doped carbon-supported cobalt oxide (Co x O y @NC) nanoparticles were successfully prepared by converting pyrazine-based covalent organic frameworks (COFs). The Co x O y @NC catalyst exhibited good conductivity and charge transfer ability due to its porous structure and nitrogen-rich characteristics. The H-2 generation rate reached a maximum of 2082.13 mL/min/g from NaBH4, and the catalyst also exhibited good magnetic separation capability.
Article
Chemistry, Physical
Jifeng Deng, Kurbannisa Kadeer, Chaoyuan Hu, Zewei Xie, Yu Shi, Xiao Liu, Lei Xie, Jinrong Xu, Jie Zheng, Xingguo Li
Summary: In this study, a sponge catalyst for hydrogen generation from liquid hydrogen carriers was developed. The commercial melamine formaldehyde (MF) sponge was modified by grafting polyvinyl alcohol (PVA) through acid-catalyzed acetalization with formaldehyde. The resulting polyvinyl formal/MF (PVF/MF) composite sponge exhibited excellent characteristics as a catalyst, including high activity, high hydrogen storage density, easy catalyst recycling, and quasi-solid state behavior during H-2 generation, as demonstrated in the applications of NaBH4 solution and thermal dehydrogenation of perhydro N-ethylcarbazole.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Rajeev V. Hegde, Tiow-Gan Ong, Ram Ambre, Arvind H. Jadhav, Siddappa A. Patil, Ramesh B. Dateer
Summary: This study achieved regioselective C2 arylation of indoles, benzothiophene, and benzofuran without directing group using affordable Pd NPs and NHC-Pd@MNPs catalyst. The reusable catalyst efficiently produced C2 arylated heterocycles in good to excellent yield, with potential for gram-scale synthesis. The reaction mechanism was supported by control experiments and literature precedents.
Review
Chemistry, Physical
Divya Prasad, Komal N. Patil, Nitin K. Chaudhari, Hern Kim, Bhari Mallanna Nagaraja, Arvind H. Jadhav
Summary: This review focuses on the utilization of metal complexes as catalytic systems for the conversion of CO2 and epoxides into cyclic carbonates. The selective catalytic activities and mechanistic understandings of these complexes are discussed based on experimental and theoretical evidence.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2022)
Article
Materials Science, Biomaterials
Hasham S. Sofi, Towseef Akram, Nadeem Shabir, Rajesh Vasita, Arvind H. Jadhav, Faheem A. Sheikh
Summary: Cellulose nanofibers with good biocompatibility, hydrophilicity, and antimicrobial properties were easily fabricated. The nanofibers were characterized for their compatibility with fibroblasts and showed potential for tissue engineering applications. Additionally, degradation studies indicated faster degradation in enzymes compared to PBS, showcasing the nanofibers' potential in biomedical fields.
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Sushil R. Mathapati, Komal N. Patil, Sujit S. Mathakari, Appasaheb W. Suryawanshi, Arvind H. Jadhav
Summary: This study describes the synthesis of a series of benzimidazoles, benzoxazoles, and benzothiazoles using 1,2-phenylenediamine, 2-aminothiophenol, or 2-aminophenol as starting materials and aryl, aliphatic and heteroaryl aldehydes as reactants. The use of 5 mol % fluorophosphoric acid as a catalyst in ethanol solvent at room temperature led to efficient synthesis with shorter reaction times, simple work-up techniques, high yields, and easy availability as key advantages of this approach.
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
(2021)
Review
Chemistry, Multidisciplinary
Walid Nabgan, Aishah Abdul Jalil, Bahador Nabgan, Arvind H. Jadhav, Muhammad Ikram, Anwar Ul-Hamid, Mohamad Wijayanuddin Ali, Nurul Sahida Hassan
Summary: The article discusses the challenges of biodiesel production, focusing on biodiesel feedstock, production costs, and sustainability. Different catalysts and potential solutions for improving biodiesel production efficiency are also suggested.
Review
Chemistry, Physical
Navya Anna Raju, Divya Prasad, Puneethkumar M. Srinivasappa, Ankush V. Biradar, Sandeep Suryabhan Gholap, Akshaya K. Samal, Bhari Mallanna Nagaraja, Arvind H. Jadhav
Summary: This review presents recent progress in the synthesis of cyclic carbonates through the cycloaddition reaction of CO2 with epoxides using silica-modified catalysts. Different classes of silica-based catalysts, including DFNS, MCM-41, SBA-15, and various ionic liquid-functionalized, metal-containing, and miscellaneous silica-based catalysts, are reviewed and discussed. The high surface area and diverse properties of silica-modified catalysts enable co-operative catalysis, resulting in superior conversion, selectivity, and yield compared to other homogeneous catalysts. The influence of reaction parameters and mechanistic details are given specific attention, and future opportunities for advanced silica-modified catalysts in CO2 conversion are highlighted.
SUSTAINABLE ENERGY & FUELS
(2022)
Article
Chemistry, Multidisciplinary
Walid Nabgan, Bahador Nabgan, Tuan Amran Tuan Abdullah, Muhammad Ikram, Arvind H. Jadhav, Aishah Abdul Jalil, Mohamad Wijayanuddin Ali
Summary: Solvent-based recycling of plastic shows significant improvement in pyrolysis-catalytic steam reforming. This study utilized plastic waste dissolved in phenol as feed for catalytic cracking and steam reforming reactions, generating valuable liquid fuels and hydrogen. The incorporation of Pd into Ni/TNPs nanocatalyst enhanced the redox properties and hydrogen yield, making it a promising catalyst for MPW-phenol cracking and steam reforming reactions.
Article
Energy & Fuels
Komal N. Patil, Pratik V. Shinde, Puneethkumar M. Srinivasappa, Walid Nabgan, Nitin K. Choudhari, Chandra Sekhar Rout, Arvind H. Jadhav
Summary: This perspective discusses the challenges in designing electrocatalysts for the oxygen evolution reaction (OER) in order to achieve energy sustainability. The authors propose the fabrication of a ternary hybrid composite electrocatalyst using carbon-based materials and earth-abundant metal oxides. They report the development of a MoO3/NiO/activated carbon (MoNiAC) ternary hybrid catalyst using a facile synthesis method. The catalyst exhibits superior OER activity, promising kinetics, and robustness, making it a potential candidate for large-scale applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Divya Prasad, Puneethkumar M. Srinivasappa, Navya Anna Raju, Akshaya K. Samal, Arvind H. Jadhav
Summary: This study developed mesoporous trimetallic oxide scaffolds (TOSs) as heterogeneous catalysts for the solvent-free transformation of CO2 into various value-added products, which showed strong metal-metal and metal-oxygen interactions in a 3D interconnected hierarchical porous network. The CoMgCe-TOS catalyst exhibited high selectivity and recyclability for the cyclization of o-phenylenediamines and CO2 to produce benzimidazoles, as well as high activity for the synthesis of cyclic carbonates. This work provides a new and greener route for the synthesis of benzimidazoles and organic carbonates.
Article
Nanoscience & Nanotechnology
Puneethkumar M. Srinivasappa, Divya Prasad, Nitin K. Chaudhari, Akshaya K. Samal, Ranjit Thapa, Erakulan E. Siddharthan, Arvind H. Jadhav
Summary: In this study, a stable porous trimetallic oxide foam (PTOF) was used as a new catalyst for the selective one-pot fixation of CO2 into oxazolidinone. The PTOF catalyst displayed highly efficient and selective catalytic activity, achieving 100% conversion of aniline with 96% selectivity and yield towards the oxazolidinone product under mild and solvent-free reaction conditions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Swarnalata Swain, Asif Iqbal, Sayali Ashok Patil, Ranjit Thapa, Manav Saxena, Arvind H. Jadhav, Akshaya K. Samal
Summary: This work presents a novel strategy for synthesizing shape-dependent alloy nanostructures with solid substrates, resulting in significant improvements in electrocatalytic performance. The authors used an aqueous medium approach to synthesize octahedral PdXCuY alloy with different Pd:Cu ratios to better understand their electrocatalytic potential. ZrO2, GONs, and hBNNs solid substrates were used to decorate the optimized Pd3Cu7 catalyst, leading to enhanced hydrogen evolution reaction (HER) activity. The Pd3Cu7@hBNNs catalyst exhibited the lowest overpotential and Tafel values, indicating its excellent performance. Density functional theory calculations further supported the superior performance of Pd3Cu7@hBNNs in achieving the Volmer-Heyrovsky mechanism path.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Green & Sustainable Science & Technology
Rumysa Saleem Khan, Anjum Hamid Rather, Taha Umair Wani, Muheeb Rafiq, Sami-Ullah Rather, Arvind H. Jadhav, M. Hemavathi, Muzafar A. Kanjwal, Faheem A. Sheikh
Summary: In this study, silk fibroin and silver nanoparticles were successfully coated on polyurethane fibers to enhance their biocompatibility and antibacterial activity. The treated fibers showed improved water contact angle and moisture regain. The composite materials exhibited good mineralization and antimicrobial ability, as well as enhanced cell proliferation and attachment.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Chemistry, Multidisciplinary
Suman Kusuma, Dipak B. Bawiskar, Chob Singh, Pratheep Panneerselvam, Pradipta Sinha, Akshaya K. Samal, Arvind H. Jadhav
Summary: In this study, a novel approach for the synthesis of benzimidazole and its derivatives using engineered MgO supported on dendritic fibrous nano silica (MgO@DFNS) as a sustainable heterogeneous catalyst was reported. The catalyst exhibited desired characteristics and produced clean reactions with excellent yields in a shorter time. The applicability of the catalyst was demonstrated through the testing of reaction parameters and the reaction of different substrates. Additionally, the catalyst showed recyclability and maintained stable activity for multiple cycles.
Review
Chemistry, Physical
N. R. Hemanth, Ranjit D. Mohili, Monika Patel, Arvind H. Jadhav, Kwangyeol Lee, Nitin K. Chaudhari
Summary: The rational design of novel nanostructured materials is crucial for improving electrochemical storage and conversion performance. Nanostructured materials, particularly nanosponges, with their unique structure and properties, have shown promising results in improving electrode performance and reducing metal usage.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Suman Kusuma, Komal N. Patil, Puneethkumar M. Srinivasappa, Nitin Chaudhari, Ajay Soni, Walid Nabgan, Arvind H. Jadhav
Summary: The study introduces a method for the synthesis of 1,5-benzodiazepine derivatives using ferrocene-supported activated carbon as a catalyst, demonstrating high reactivity and selectivity under solvent-free conditions. Through thorough investigation of reaction parameters, good product yields were achieved.
