“…As a new type of functional material, magnesium borate (Mg 2 B 2 O 5 ) whisker is widely used in metal and alloy compounds [1,2], polymers, composites and catalysts [3][4][5]. Several techniques have been developed to synthesise Mg 2 B 2 O 5 , including the mechano-chemical method [6], the high temperature molten salt method [7], the microwave solid phase method [8], the sol-gel method [9], the hydrothermal precursor method [10], the chemical vapour deposition method [11,12] and hydrothermal synthesis [13].…”