کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
625617 1455425 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
La2Ti2O7: An efficient and stable photocatalyst for the photoreduction of Cr(VI) ions in water
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
La2Ti2O7: An efficient and stable photocatalyst for the photoreduction of Cr(VI) ions in water
چکیده انگلیسی

In the present work, the photocatalytic activity of La2Ti2O7 for the photoreduction of Cr(VI) ions in water was investigated. The results indicated that La2Ti2O7 is an efficient photocatalyst with 98% of reduction efficiency of Cr(VI) ions after 3 h ultraviolet (UV) irradiation. Meanwhile, the stability of La2Ti2O7 in the photocatalysis was investigated by repeatedly performing Cr(VI) photoreducing experiments. It can be found that the photocatalytic activity of La2Ti2O7 remained almost unchanged after nine successive cycles, and the reduction ratio of Cr(VI) ions was still up to 50% in the twentieth cycle. Furthermore, for practical purposes, the photocatalytic reduction of Cr(VI) ions was studied as functions of the solution pH, initial Cr(VI) concentration and additional salts.

Graphical AbstractFigure optionsDownload as PowerPoint slideResearch Highlights
► La2Ti2O7 is a high active photocatalyst for the photoreduction of Cr(VI) ions.
► La2Ti2O7 remained almost unchanged photocatalytic activity after nine cycles.
► La2Ti2O7 is suitable for the elimination of Cr(VI) ions in acidic solution.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 266, Issues 1–3, 31 January 2011, Pages 149–153
نویسندگان
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