کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1785404 1023379 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improvement of water softening efficiency in capacitive deionization by ultra purification process of reduced graphene oxide
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Improvement of water softening efficiency in capacitive deionization by ultra purification process of reduced graphene oxide
چکیده انگلیسی


• Ultra purified GO and rGO prepared by modifying Hummer method.
• Electrosorption capacity achieve 3.54 mg g−1.
• These results show the possibility of rGO as CDI electrode.

Capacitive deionization (CDI) is the next generation of water desalination and softening technology by using relatively low capacitive current of electrochemical double layer. Among various carbon-based materials used for making electrode, reduced graphene oxide (rGO) has been intensively studied due to its excellent electrical conductivity and high surface area. Although Hummer method for making graphene oxide (GO) and rGO is a simple process, it remains some impurities in inherent GO and rGO which affect negatively to the CDI performance. In this work, we successfully prepared ultra purified GO and rGO by modifying Hummer method in order to remove entirely excess elements degrading the CDI performance. The electrosorption capacity of ultra purified rGO is considerably better than that of previous rGO, and maximum removal achieves 3.54 mg g−1 at applied voltage of 2.0 V. Thus, this result could be comparable to other researches in CDI process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 15, Issue 11, November 2015, Pages 1397–1401
نویسندگان
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