Nowadays, extensive efforts have been devoted to the fabrication and design of metalbased catalysts with high activity, selectivity, and stability. Theoretical and experimental investigations have empowered the construction of a variety of techniques to tune the catalytic efficiency of catalysts by monitoring their size, morphology, composition, and crystal structure. Multimetal catalysts (MMCs) provide a revolutionary synergistic effect between metals, which is a promising strategy to tune and enhance the catalysts’ productivity and product selectivity. The purpose of this article is to familiarize readers with the most uptodate information regarding the synthesis and classification of MMCs. The key roles of MMCs electrocatalysts in a variety of applications such as CO₂ conversion via electrochemical CO₂ reduction reaction (ECO₂RR), H₂ evolution reaction (HER), O₂ evolution reaction (OER), O₂ reduction reaction (ORR), N₂ reduction reaction (NRR), methanol oxidation reaction (MOR), ethanol oxidation reaction (EOR), formic acid oxidation reaction (FAOR), and urea oxidation reaction (UOR) are summarized. This review also addressed the challenges and prospects for multimetallic catalyst design, characterization, and applications. This review article will provide a clear roadmap for the research and progress of multimetallic catalysts for electrocatalytic applications.

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The genus Mimosa belongs to the Fabaceae family and comprises almost 400 species of herbs, shrubs and ornamental trees. The genus Mimosa is found all over the tropics and subtropics of Asia, Africa, South America, North America and Australia. Traditionally, this genus has been popular for the treatment of jaundice, diarrhea, fever, toothache, wound healing, asthma, leprosy, vaginal and urinary complaints, skin diseases, piles, gastrointestinal disorders, small pox, hepatitis, tumor, HIV, ulcers and ringworm. The review covered literature available from 1959 to 2020 collected from books, scientific journals and electronic searches, such as Science Direct, Web of Science and Google scholar. Various keywords, such as Mimosa, secondary metabolites, medicines, phytochemicals and pharmacological values, were used for the data search. The Mimosa species are acknowledged to be an essential source of secondary metabolites with a wide-ranging biological functions, and up until now, 145 compounds have been isolated from this genus. Pharmacological studies showed that isolated compounds possess significant potential, such as antiprotozoal, antimicrobial, antiviral, antioxidant, and antiproliferative as well as cytotoxic activities. Alkaloids, chalcones, flavonoids, indoles, terpenes, terpenoids, saponins, steroids, amino acids, glycosides, flavanols, phenols, lignoids, polysaccharides, lignins, salts and fatty esters have been isolated from this genus. This review focused on the medicinal aspects of the Mimosa species and may provide a comprehensive understanding of the prospective of this genus as a foundation of medicine, supplement and nourishment. The plants of this genus could be a potential source of medicines in the near future.@en