Article
Chemistry, Inorganic & Nuclear
Yongyang Zhu, Hao Zhong, Liuzhang Ouyang, Jiangwen Liu, Hui Wang, Huaiyu Shao, Min Zhu
Summary: In this study, an energy-saving and cost-efficient process for the (re)generation of NaBH4 was reported by ball milling hydrated borax with a Mg-Al alloy under ambient conditions. The introduction of abundant and readily available Al can increase air stability of the reducing agent, and a high yield up to 85.2% could be achieved by using Mg17Al12 due to its hardness and brittleness.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Yongyang Zhu, Yin Wang, Liming Zeng, Daifeng Wu, Cifu Lu, Xu-Sheng Yang, Qing Zhou, Renheng Tang, Fangming Xiao
Summary: MgH2@M(BH4)x composites were synthesized by ball milling MgH2 with cheap metaborates, and the MgH2-4 mol% NaBO2 composite achieved the best hydrolysis performance, releasing 1597.2 mL g-1 of hydrogen in 60 minutes.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Ceramics
Enlei Zhang, Rui Xu, Lijie Wang, Jiaojiao Chen, Bengui Zhang, Guosheng Wang
Summary: This work focuses on the hydrogen production from sodium borohydride (NaBH4) hydrolysis using homogeneous copper ferrite (CuFe2O4) nanocubes. The nanocubes, produced without the use of surfactants, exhibited good catalytic activity and recyclability in the hydrolysis process. The hydrogen production rate reached up to 1.5 L/min/g at 303K, which is significantly higher than other CuFe2O4 materials. The effects of NaOH concentration, NaBH4 concentration, and reaction temperature were investigated, and the nanocubes were found to have a low activation energy of 41.53 kJ/mol.
CERAMICS INTERNATIONAL
(2023)
Review
Energy & Fuels
Wan Jefrey Basirun, Syed Tawab Shah, Md. Shalauddin, Shamima Akhter, Nazzatush Shimar Jamaludin, Adeeb Hayyan
Summary: The recycling of sodium borohydride is a major challenge for the hydrogen economy. Mechano-chemical, thermo-chemical, and electrochemical methods are reported for recycling sodium metaborate into sodium borohydride. Electrochemical behavior of borohydride and metaborate in alkaline solutions is described. Challenges, suggestions, and future outlook of electro-reduction for the recycling of metaborate into borohydride are highlighted.
Article
Chemistry, Physical
Fahriye Donmez, Nezihe Ayas
Summary: In this study, Ni/TiO2 catalysts were synthesized using the sol-gel technique and characterized through various methods, while the effects of different factors on hydrogen production performance were investigated. It was found that high hydrogen yield and production rate could be achieved under specific reaction conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
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.
Review
Chemistry, Multidisciplinary
Junfeng Zhou, Tze-Gang Hsu, Junpeng Wang
Summary: The accumulation of plastic waste has resulted in severe environmental pollution due to inadequate recycling. While mechanical recycling can address this issue, it often compromises the material's molecular weight and mechanical properties, making it unsuitable for mixed materials. Chemical recycling, on the other hand, breaks down polymers into smaller constituents, enabling the creation of high-quality materials comparable to virgin polymers, and it can be applied to mixed materials. Mechanochemical degradation and recycling combine the advantages of mechanical techniques and chemical recycling to achieve efficient and scalable polymer recycling. This article serves as a summary of recent advancements in mechanochemical degradation and recycling of synthetic polymers, both commercially available and specially designed for more effective mechanochemical degradation. It also highlights the limitations of mechanochemical degradation and provides perspectives on overcoming these challenges towards a circular polymer economy.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Taylor V. Fetrow, Scott R. Daly
Summary: Phosphinodiboranates are a class of borohydrides that have limited coordination complexes known with transition metals, lanthanides, and actinides. Mechanochemistry was found to be effective in overcoming the limited solution reactivity of K(H3BPPh2BH3) by exchanging the Bu-t groups attached to phosphorus with R = Ph or H. Despite limitations, mechanochemistry can be used to rapidly synthesize molecular coordination complexes that are difficult to prepare using traditional solution methods.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Frances Pope, Jeffrey Jonk, Millie Fowler, Petrus C. M. Laan, Norbert J. Geels, Larissa Drangai, Vitaly Gitis, Gadi Rothenberg
Summary: The safety concern of using large amounts of compressed or liquid hydrogen in a transition to a hydrogen economy can be addressed by using chitosan as a catalyst support. Chitosan spheres encapsulating cobalt catalysts remain stable at high reaction pH, and show high catalytic activity and reusability.
Article
Chemistry, Multidisciplinary
Md Mahiuddin, Bungo Ochiai
Summary: Lemon juice serves as an effective reducing and capping agent for the synthesis of BiNPs in basic aqueous media, which are stable and catalyze the reduction of 4-nitrophenol to 4-aminophenol by NaBH4.
Article
Chemistry, Physical
Merve Altinsoy, Ayhan Abdullah Ceyhan
Summary: In this study, a cobalt-doped catalyst was prepared from chicken eggshell powder for the hydrolysis of sodium borohydride. The effects of various parameters on the hydrolysis process were examined. The prepared catalyst showed a high hydrogen generation rate and good reusability, making it advantageous for use in sodium borohydride hydrolysis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Organic
Timothy D. Schoch, Mukulesh Mondal, Jimmie D. Weaver
Summary: An economical method using NaBH4 for removing fluorine from highly fluorinated arenes was presented. A novel organic dye based on carbazole phthalonitrile was synthesized in two steps, demonstrating its photoactivity and ability to facilitate isomerization.
Article
Chemistry, Physical
Fumika Tsuji, Akira Nasu, Atsushi Sakuda, Masahiro Tatsumisago, Akitoshi Hayashi
Summary: In this study, Na3PS4 electrolytes with partial substitution of P5+ with W6+ were investigated for all-solid-state sodium batteries. The Na2.85P0.85W0.15S4 electrolyte exhibited higher ionic conductivity and showed potential for improving battery performance.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Jialu Xu, Xiaolan Duan, Pengfei Zhang, Qiang Niu, Sheng Dai
Summary: This study developed a mechanochemical extrusion approach to convert PET waste into functional carbon materials, providing a sustainable solution to fight against plastic pollution.
Article
Multidisciplinary Sciences
Xing Shen, Quan Zhou, Miao Han, Xingguo Qi, Bo Li, Qiangqiang Zhang, Junmei Zhao, Chao Yang, Huizhou Liu, Yong-Sheng Hu
Summary: By employing a solvent-free mechanochemical protocol, sodium vanadium fluorophosphates have been successfully synthesized with improved electrochemical performance, demonstrating promise for industrial application in sodium-ion batteries.
NATURE COMMUNICATIONS
(2021)
