التفاصيل البيبلوغرافية
| العنوان: |
Controllable synthesis of CdSe QDs@NPC composite improving electron–hole separation and enhancing visible-light photocatalytic activities toward RhB degradation. |
| المؤلفون: |
Jiayu Zhu, Ze Wang, Yafeng Li, Yuanrui Wang |
| المصدر: |
Micro & Nano Letters (Wiley-Blackwell); 2019, Vol. 14 Issue 7, p761-764, 4p |
| مصطلحات موضوعية: |
INDUCTIVELY coupled plasma atomic emission spectrometry, QUANTUM dots, X-ray powder diffraction, X-ray photoelectron spectroscopy |
| مستخلص: |
In this work, NPC (nanoporous carbon) is purposely employed to accommodate the semiconductor CdSe QDs (quantum dots) in the absence of any capping agent to facilitate the visible-light photocatalyst CdSe QDs@NPC composite. CdSe QDs@NPC composite has been achieved by the facile method of the incipient-wetness deposition, and furthermore characterised by powder X-ray diffraction, inductively coupled plasma atomic emission spectroscopy, X-ray photoelectron spectroscopy, Brunauer–Emmett–Teller, transmission electron microscopy (TEM) and high-resolution TEM (HRTEM). The results of TEM and HRTEM show that CdSe QDs are implanted into NPC and bound to several nanometres. Both X-ray diffraction and HRTEM indicate that the as-synthesised CdSe QDs belong to the cubic phase. The photocatalytic performance of CdSe QDs@NPC composite has been evaluated by degrading the RhB under visible-light irradiation. NPC as electron acceptor and transport channel can enhance the synergism of CdSe and NPC by improving the electron–hole separation. Furthermore, the photocatalytic mechanism exhibits that h+ and O2−• species are the decisive, active species in the degradation process of RhB. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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