محبوبترین نویسندگان :
نویسندگان مقالات پربازدید :
کاتالیزور کاربردی a: عمومی 2012
جزئیات رویداد
اینستاگرام تی پی بین
همایش ، رویداد ، ژورنال
حوزه های تحت پوشش رویداد

  • microwave-assisted synthesis of cds intercalated k4nb6o17 and its photocatalytic activity for hydrogen production

    نویسندگان :
    کلمات کلیدی :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 985
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     cds intercalated k4nb6o17 (designated as k4nb6o17/cds) composite photocatalysts were synthesized using a microwave-assisted synthesis. the composite particles were characterized by x-ray diffraction (xrd), scanning electron microscopy (sem), x-ray fluorescence spectrometry (xrf), energy dispersive x-ray (eds), ultraviolet–visible diffuse reflection spectra (uv–vis) and photoluminescence measurements (pl). the photocatalytic properties of these catalysts for hydrogen production were also investigated in the presence of na2s and na2so3 sacrificial reagents. the k4nb6o17/cds catalysts synthesized using microwave irradiation were found to possess higher crystallinity than their counterparts, synthesized using conventional methods. the absorption edge of k4nb6o17 was shifted to the visible light region after the intercalation of cds. compared to the conventional synthesis method, the use of microwave irradiation sharply shortened the intercalation time. furthermore, the k4nb6o17/cds sample prepared via microwave irradiation exhibited higher activities for photocatalytic hydrogen production under both uv light and visible light irradiation, and the amounts of hydrogen produced were 265.95 mmol/(g cat) and 5.68 mmol/(g cat) after 3 h of irradiation, respectively. the mechanism of separation of the photogenerated electrons and holes at the k4nb6o17/cds composite was discussed.

سوال خود را در مورد این مقاله مطرح نمایید :

با انتخاب دکمه ثبت پرسش، موافقت خود را با قوانین انتشار محتوا در وبسایت تی پی بین اعلام می کنم
مقالات جدیدترین رویدادها
مقالات جدیدترین ژورنال ها