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Petaliform magnesium oxide nanomaterials were prepared by which the basic magnesium carbonate made from light burning powder of low grade magnesite were used as precursor. The XRD results indicated that aqueous magnesium carbonate changed to basic magnesium carbonate (4MgCO3•Mg(OH)2•4H2O) when heating temperature reached 95°C, the SEM confirmed that the morpholoZgy of basic magnesium carbonate (4MgCO3•Mg(OH)2•4H2O) were petaliform, after calcinations the magnesium oxide with the same morphologies as precursors’ were obtained, simultaneously , the products with high activity (iodine value of 197mgI2/g).

Magnesium borate ball of wires, nanowires and petaliforms were prepared via calcination of magnesium borate hydroxide synthesized by hydrothermal route. Results of SEM characterization indicated that the morphology of magnesium borate hydroxide and magnesium borate could be talored via varying reaction temperature, reaction time and water's volume. And pure magnesium borate could be achieved when magnesium borate hydroxide was calcinated at 700°C.

Aluminum borate (Al4B2O9) nanomaterials were synthesized via a sol-gel process using Na2B4O7·10H2O and Al (NO3)3·9H2O. The effect of reaction volume concentration, calcination temperature and feeding modes on the morphology of Aluminum borate was investigated. The material was characterized with SEM and XRD. Results reveal that Al4B2O9 nanowires, nanorods could be synthesized, and its morphology also can be tailored by controlling calcination temperature and feeding modes.