VISIBLE LIGHT PHOTODEGRADATION OF PHENOL USING NANOSCALE TIO2 AND ZNO IMPREGNATED WITH MERBROMIN DYE: A MECHANISTIC INVESTIGATION

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

JANITABAR DARZI SIMIN; MOVAHEDI MARYAM

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Iranian Journal of Chemistry and Chemical Engineering Year:2014 | Volume:33 | Issue:2 Page(s): 55-64

Download Full-Text

View:

466

Download:

243

Cites:

Information Journal Paper

Title

VISIBLE LIGHT PHOTODEGRADATION OF PHENOL USING NANOSCALE TIO2 AND ZNO IMPREGNATED WITH MERBROMIN DYE: A MECHANISTIC INVESTIGATION

Author(s)

JANITABAR DARZI SIMIN | MOVAHEDI MARYAM | Issue Writer Certificate

Keywords

DYE MODIFICATION

PHOTOCATALYST

TIO2

ZNO

PHENOL DEGRADATION

Abstract

ZnO and TIO2 nanoparticles were impregnated with merbromin dye and used as modified PHOTOCATALYSTs for degradation of phenol. Dye-modified ZNO and TIO2 showed significantly higher photocatalytic activity than neat ZNO and TIO2 under visible light illumination. Moreover, the prepared dye-modified ZNO showed superior photocatalytic efficiency in degradation of phenol compared to the dye-modified TIO2. In a period of 4 hours, dye-modified ZNO removed phenol almost completely while dye-modified TIO2 degraded it only to 47%. A cooperative working mechanism involving the possible photoactivation of both surface bound dye and semiconductor is proposed for the dye-modified systems. The suggested pathway is based on charge-transfer formalism. Furthermore, the study proposes some reasons for difference in reactivity of the dye-modified ZNO and TIO2 catalysts. Less aggregation of dye molecules on the surface of ZNO compared to TIO2 causes more prolonged lifetime of excited state of the dye on the surface of ZNO. Also, energy gap between the conduction band of semiconductor and LUMO level of merbromin in dye-modified ZNO is larger than dye-modified TIO2. Both above lead to more effective electron injection from the dye to ZNO which is hypothesized to be mainly responsible for the enhancement of the reaction rate of PHENOL DEGRADATION.

Cites

References

Cite

APA: Copy

JANITABAR DARZI, SIMIN, & MOVAHEDI, MARYAM. (2014). VISIBLE LIGHT PHOTODEGRADATION OF PHENOL USING NANOSCALE TIO2 AND ZNO IMPREGNATED WITH MERBROMIN DYE: A MECHANISTIC INVESTIGATION. IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE), 33(2), 55-64. SID. https://sid.ir/paper/631426/en

Vancouver: Copy

JANITABAR DARZI SIMIN, MOVAHEDI MARYAM. VISIBLE LIGHT PHOTODEGRADATION OF PHENOL USING NANOSCALE TIO2 AND ZNO IMPREGNATED WITH MERBROMIN DYE: A MECHANISTIC INVESTIGATION. IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE)[Internet]. 2014;33(2):55-64. Available from: https://sid.ir/paper/631426/en

IEEE: Copy

SIMIN JANITABAR DARZI, and MARYAM MOVAHEDI, “VISIBLE LIGHT PHOTODEGRADATION OF PHENOL USING NANOSCALE TIO2 AND ZNO IMPREGNATED WITH MERBROMIN DYE: A MECHANISTIC INVESTIGATION,” IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE), vol. 33, no. 2, pp. 55–64, 2014, [Online]. Available: https://sid.ir/paper/631426/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops