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
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
Deniz Lim, Goksel Ozkan, Gulay Ozkan
Summary: This study investigates the catalytic hydrolysis of sodium borohydride and ammonia boranes mixtures, focusing on the effect of Zr additive in the catalyst, different catalyst types, molar ratio of the mixture, and temperature. In-situ synthesized Zr-Ni-B catalyst shows better results compared to Ni-B catalyst and improves efficiency at lower temperatures. The addition of Zr increases the surface area of the catalyst. SEM, BET, XPS analyses are used to characterize the catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
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
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
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
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
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, Multidisciplinary
Yuqian Yu, Li Kang, Lixian Sun, Fen Xu, Hongge Pan, Zhen Sang, Chenchen Zhang, Xinlei Jia, Qingli Sui, Yiting Bu, Dan Cai, Yongpeng Xia, Kexiang Zhang, Bin Li
Summary: In this study, a porous titanium oxide cage (PTOC) catalyst was successfully synthesized, and its synergistic effect with PtNi alloy particles resulted in a high hydrogen generation rate and low activation energy. The robust porous structure of PTOC effectively prevented agglomeration issues and ensured the long-term stability of the catalyst.
Article
Chemistry, Physical
Julide Hazal Turkcan, Huseyin Elcicek, Oguz Kaan Ozdemir
Summary: The study found that factors such as temperature, pH, reduction rate, and reducing agent concentration significantly affect the performance of catalysts in hydrogen production through hydrolysis of sodium borohydride. The analysis showed that pH and reduction rate have a greater impact on the hydrogen generation rate than temperature.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Faezeh Mirshafiee, Mehran Rezaei
Summary: In this study, cobalt nanocatalysts supported on Fe3O4@GO were synthesized and used to enhance hydrogen generation from the hydrolysis of sodium borohydride. The Co/Fe3O4@GO catalysts showed high catalytic activity, with a hydrogen generation rate of 4000 mL/min.gcat and good stability when loaded with 30 wt% cobalt. The Box-Behnken design under response surface methodology (RSM) was employed to investigate the effect of parameters on the hydrogen generation rate and identify the optimal reaction conditions. The Co/Fe3O4@GO catalyst exhibited a superior H2 generation rate of 6005 mL/min.gcat and low activation energy of 44.4 kJ/mol under the optimized conditions of temperature, catalyst loading, and NaBH4 concentration. The Co/Fe3O4@GO catalyst holds promise for NaBH4 hydrolysis due to its easy preparation and separation method, high hydrogen generation rate, and low activation energy.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Yu-Jin Lee, Arash Badakhsh, Dongsu Min, Young Suk Jo, Hyuntae Sohn, Chang Won Yoon, Hyangsoo Jeong, Yongmin Kim, Kwang-Bum Kim, Suk Woo Nam
Summary: By incorporating aluminum and utilizing pulsed chronoamperometric electrodeposition, structured cobalt-nickel catalysts were prepared, showing 1.5 times higher catalytic activity compared to porous nickel foam, with only 0.57 wt% cobalt content. The structured cobalt-nickel catalyst exhibited higher stability than the porous nickel foam even after an accelerated durability test.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Riccardo Checchetto, Daniele Rigotti, Alessandro Pegoretti, Antonio Miotello
PURE AND APPLIED CHEMISTRY
(2020)
Review
Chemistry, Multidisciplinary
Suraj Gupta, Maulik K. Patel, Antonio Miotello, Nainesh Patel
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Chemistry, Physical
D. Rigotti, A. Pegoretti, A. Miotello, R. Checchetto
APPLIED SURFACE SCIENCE
(2020)
Article
Engineering, Civil
Nainesh Patel, Mingzhe He, Hassan Hemida, Andrew Quinn
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2019)
Article
Environmental Sciences
Giulia Ischia, Michele Orlandi, Murilo Alexandre Fendrich, Marco Bettonte, Fabio Merzari, Antonio Miotello, Luca Fiori
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2020)
Article
Chemistry, Physical
R. Kadrekar, N. Patel, A. Arya
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Analytical
Luca Basso, Mirko Sacco, Nicola Bazzanella, Massimo Cazzanelli, Alessandro Barge, Michele Orlandi, Angelo Bifone, Antonio Miotello
Review
Chemistry, Multidisciplinary
Luca Basso, Massimo Cazzanelli, Michele Orlandi, Antonio Miotello
APPLIED SCIENCES-BASEL
(2020)
Article
Electrochemistry
R. Fernandes, A. Chunduri, S. Gupta, R. Kadrekar, A. Arya, A. Miotello, N. Patel
ELECTROCHIMICA ACTA
(2020)
Article
Materials Science, Multidisciplinary
Rupali Patel, Nainesh Patel, Nicola Bazzanella, Antonio Miotello
Review
Chemistry, Multidisciplinary
Domenico Leonello, Murilo Alexandre Fendrich, Francesco Parrino, Nainesh Patel, Michele Orlandi, Antonio Miotello
Summary: PFAS substances are among the most critical emerging contaminants, correlated with health issues. Research efforts are focused on developing new technologies to mitigate water contamination problems, with interesting prospects shown by photocatalytic materials active under near UV-visible radiation.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Multidisciplinary
A. Dutta, T. Sivaji, M. Ghosh, R. Fernandes, P. S. De, D. Nayak, R. Sharma
Summary: The study demonstrates that the aqueous corrosion resistance of AlCuFeMn alloy is improved after low-temperature surface oxidation, with the main corrosion types being uniform and pitting, and a copper oxide enriched layer forming during corrosion.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Murilo Fendrich, Yaksh Popat, Michele Orlandi, Alberto Quaranta, Antonio Miotello
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2020)