**1. Introduction**

Magnesium is the third most abundant element by mass in Earth's surface composition. Magnesium-based materials are preferable, especially for their lightweight. Magnesium is found in nature as the combination of oxygen to form different minerals such as sulfates, carbonates, nitrates, and borates [1, 2]. Some kinds of magnesium compounds can be soluble, such as magnesium sulfate, magnesium nitrate, and

magnesium bromide. These compounds are generally hygroscopic. Other types of magnesium compounds are known as insoluble, such as magnesium borate, magnesium oxide, and magnesium phosphate. The salt group of magnesium is effective in the corrosive behavior of magnesium compounds [3]. Being insoluble in water makes magnesium borates production easier with developed technology, such as hybrid synthesis methods, the use of microwave and ultrasound technologies.

As a magnesium-based compound, magnesium borate can be utilized in the applications of X-ray screening, radiation permeation, catalysis of organic reactions, strengthening of plastics, and ion-battery systems. The studies on magnesium borates are generally focused on synthesis techniques. The common aim of the developed synthesis methods is to decrease energy consumption. However, the characteristics of the prepared sample are related to the designed experimental setup. A thorough understanding of the relationship between synthesis procedures and characteristics of the novel borates obtained will help increased the use of the correct form of magnesium borate in industry.
