کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9451386 | 1307814 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dissolution studies on TiO2 with organics
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
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چکیده انگلیسی
In this work the effect of organic reducing reagents, namely, ascorbic acid, oxalic acid and l-cysteine on dissolution of commercial TiO2 has been investigated. Kinetic studies showed that a maximum of about 45% of TiO2 was dissolved by ascorbic acid in 4Â h when oxide:acid molar ratio was kept at 1:2. The dissolution of TiO2 increased with increase in ascorbic acid and oxalic acid concentration up to 0.15Â M in 4Â h (corresponding to molar ratio of oxide to acid of 1:3) and further addition did not affect the dissolution. Nearly 45% TiO2 dissolution was obtained with ascorbic acid alone while oxalic acid yielded 40% dissolution. When oxalic acid was added along with ascorbic acid in equi-molar concentrations, dissolution of TiO2 was enhanced to 60% in 2.5Â h but when cysteine was added to ascorbic acid the dissolution was about 50% in just 1Â h.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 61, Issue 4, October 2005, Pages 585-588
Journal: Chemosphere - Volume 61, Issue 4, October 2005, Pages 585-588
نویسندگان
Amitava Mukherjee, Ashok M. Raichur, Jayant M. Modak,