Facile Synthesis of Phosphogypsum-Based Whiskers by Low Temperature Hydrothermal Route with CTAB Addition

Lin Lin Zhuang; Ming Ding; Cheng Liang Han

doi:10.4028/www.scientific.net/MSF.852.1450

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HomeMaterials Science ForumMaterials Science Forum Vol. 852Facile Synthesis of Phosphogypsum-Based Whiskers...

Facile Synthesis of Phosphogypsum-Based Whiskers by Low Temperature Hydrothermal Route with CTAB Addition

Abstract:

CaSO₄·0.5H₂O whiskers were successfully synthesized by hydrothermal process, in which phosphogypsum (PG) was employed as precursors. The effect of the hexadecyltrimethylammonium bromide (CTAB) on the formation of phosphogypsum-based CaSO₄·0.5H₂O whiskers was investigated in details. Results indicated that the average diameter and length of as-prepared CaSO₄·0.5H₂O whiskers with rough surface were about 0.15-2.5μm and 10-50 μm, respectively. The added CTAB templates would effectively guided the selective growth of CaSO₄·0.5H₂O particles which led to formation of whiskers with high aspect ratios.