Abutaleb Ahmed
Chemical Engineering Department, College of Engineering, Jazan University, Gizan 45142, Saudi Arabia.
Polymers (Basel). 2021 Jul 13;13(14):2290. doi: 10.3390/polym13142290.
Hydrogen (H) is a promising renewable energy source that can replace fossil fuels since it can solve several environmental and economic issues. However, the widespread usage of H is constrained by its storage and safety issues. Many researchers consider solid materials with an excellent capacity for H storage and generation as the solution for most H-related issues. Among solid materials, ammonia borane (abbreviated hereafter as AB) is considered one of the best hydrogen storage materials due to its extraordinary H content and small density. However, the process must be conducted in the presence of efficient catalysts to obtain a reasonable amount of generated H. Electrospun nanofibrous catalysts are a new class of efficient catalysts that involves the usage of polymers. Here, a comprehensive review of the ceramic-supported electrospun NF catalysts for AB hydrolysis is presented, with a special focus on catalytic and photolytic performance and preparation steps. Photocatalytic AB hydrolysis was discussed in detail due to its importance and promising results. AB photocatalytic hydrolysis mechanisms under light were also explained. Electrospun catalysts show excellent activity for AB hydrolysis with good recyclability. Kinetics studies show that the AB hydrolysis reaction is independent of AB concentration and the first-order reaction of NF catalysts.
氢（H）是一种很有前景的可再生能源，因其能解决若干环境和经济问题，故可替代化石燃料。然而，氢的广泛使用受到其储存和安全问题的制约。许多研究人员认为，具有出色储氢和产氢能力的固体材料是解决大多数与氢相关问题的办法。在固体材料中，氨硼烷（以下简称AB）因其超高的氢含量和低密度，被认为是最佳储氢材料之一。然而，该过程必须在高效催化剂的存在下进行，才能获得适量的产氢。电纺纳米纤维催化剂是一类新型高效催化剂，涉及聚合物的使用。在此，对用于AB水解的陶瓷负载电纺纳米纤维催化剂进行全面综述，特别关注催化和光解性能以及制备步骤。由于光催化AB水解的重要性和良好效果，对其进行了详细讨论。还解释了光照下AB光催化水解的机理。电纺催化剂对AB水解表现出优异的活性和良好的可回收性。动力学研究表明，AB水解反应与AB浓度无关，是纳米纤维催化剂的一级反应。
