ArticleRSC advances2026
Utilization of Indonesian coal fly ash as a silica precursor for mesoporous silica based slow-release fertilizer.
Article in RSC advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
6 authors.
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Abstract
This study explores the utilization of coal fly ash (FA) as a silica source for the synthesis of mesoporous silica (MS) for slow-release fertilizers (SRF). Initially, the FA was washed with concentrated hydrochloric acid to produce silica with 77.95% purity. The extracted silica was treated with sodium hydroxide at 80 °C to form sodium silicates. The synthesis of MS utilized 2 w/w% cetyltrimethylammonium bromide (CTAB) as a template at various pH values (6, 8, and 10) and a hydrothermal method at 100 °C for 24 h, resulting in uniform particle sizes and improved surface areas. MS synthesized with CTAB at pH 10 (MSFA_CTAB10) shows the largest surface area of 1351 m
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