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Crystalline quality assessment, photocurrent response and optical properties of reduced graphene oxide uniformly decorated zinc oxide nanoparticles based on the graphene oxide concentration
| Content Provider | Semantic Scholar |
|---|---|
| Author | Azarang, Majid Shuhaimi, Ahmad Sookhakian, Mehran |
| Copyright Year | 2015 |
| Abstract | Zinc oxide-nanoparticles (ZnONPs)–reduced graphene oxide (rGO) composites with a high degree of crystallinity and a high dispersity were successfully synthesized via a one-pot, facile sol–gel method in a starch environment, during which the formation of zinc oxide nanoparticles, the reduction of graphene oxide and the loading of the ZnONPs onto the rGO surface occur simultaneously. Starch, as a natural capping agent, plays a significant role in controlling the degree of dispersion and coverage of the ZnONPs. The effect of rGO on the crystalline structure and optical properties of the ZnONPs was determined via X-ray diffraction, UV-visible diffused reflectance spectroscopy and photoluminescence spectroscopy. The ZnONPs+rGO composites exhibit excellent potential for photocurrent generation compared with pure ZnONPs under visible light irradiation, provided that efficient photo-induced charge separation and transportation can be achieved at the interface. The maximum photocurrent response, crystalline quality and factor optical properties (NBE/DLE ratio) were obtained for the ZnONPs+rGO composite with a 1.7% mass fraction of rGO, which is twice that achieved on pure ZnONPs. |
| Starting Page | 53117 |
| Ending Page | 53128 |
| Page Count | 12 |
| File Format | PDF HTM / HTML |
| DOI | 10.1039/C5RA06123G |
| Volume Number | 5 |
| Alternate Webpage(s) | https://umexpert.um.edu.my/file/publication/00011485_122063_62454.pdf |
| Alternate Webpage(s) | https://doi.org/10.1039/C5RA06123G |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
