The pH-Controlled Plasmon-Assisted Surface Photocatalysis Reaction of 4-Aminothiophenol to p,p '-Dimercaptoazobenzene on Au, Ag, and Cu Colloids
(2011) In Journal of Physical Chemistry C 115(19). p.9629-9636- Abstract
- In this paper, we report experimentally and theoretically a surface photocatalysis reaction of 4-aminothiophenol (PATP) to p,p'-dimercaptoazobenzene (DMAB) on Au, Ag, and Cu colloids. Surface enhanced Raman scattering (SEAS) spectra of PATP on Au and Cu colloids are significantly different from the normal Raman spectrum of PATP powder. Quantum chemical calculations reveal that PATP on Au and Cu colloids is converted to DMAB by a surface photocatalysis reaction, and all the strongly enhanced Raman peaks are the symmetric Ag vibrational mode by surface plasmon. The pH value effects on surface photocatalysis reaction were also investigated experimentally. It is found that plasmon-assisted surface photocatalysis reaction can be efficiently... (More)
- In this paper, we report experimentally and theoretically a surface photocatalysis reaction of 4-aminothiophenol (PATP) to p,p'-dimercaptoazobenzene (DMAB) on Au, Ag, and Cu colloids. Surface enhanced Raman scattering (SEAS) spectra of PATP on Au and Cu colloids are significantly different from the normal Raman spectrum of PATP powder. Quantum chemical calculations reveal that PATP on Au and Cu colloids is converted to DMAB by a surface photocatalysis reaction, and all the strongly enhanced Raman peaks are the symmetric Ag vibrational mode by surface plasmon. The pH value effects on surface photocatalysis reaction were also investigated experimentally. It is found that plasmon-assisted surface photocatalysis reaction can be efficiently controlled by different pH values. The possibility of protonation of PATP adsorbed on Au and Ag nanoparticles at pH 3 is investigated theoretically. The molecular mechanism is proposed for controlling surface photocatalysis reaction by pH values. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1986842
- author
- Sun, Mengtao ; Huang, Yingzhou ; Xia, Lixin ; Chen, Xiaowei and Xu, Hongxing LU
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Physical Chemistry C
- volume
- 115
- issue
- 19
- pages
- 9629 - 9636
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000290427400041
- scopus:79956147536
- ISSN
- 1932-7447
- DOI
- 10.1021/jp201002v
- language
- English
- LU publication?
- yes
- id
- d66db957-3543-4a11-87a8-f4d957eddbbf (old id 1986842)
- date added to LUP
- 2016-04-01 10:16:56
- date last changed
- 2022-04-27 20:28:01
@article{d66db957-3543-4a11-87a8-f4d957eddbbf, abstract = {{In this paper, we report experimentally and theoretically a surface photocatalysis reaction of 4-aminothiophenol (PATP) to p,p'-dimercaptoazobenzene (DMAB) on Au, Ag, and Cu colloids. Surface enhanced Raman scattering (SEAS) spectra of PATP on Au and Cu colloids are significantly different from the normal Raman spectrum of PATP powder. Quantum chemical calculations reveal that PATP on Au and Cu colloids is converted to DMAB by a surface photocatalysis reaction, and all the strongly enhanced Raman peaks are the symmetric Ag vibrational mode by surface plasmon. The pH value effects on surface photocatalysis reaction were also investigated experimentally. It is found that plasmon-assisted surface photocatalysis reaction can be efficiently controlled by different pH values. The possibility of protonation of PATP adsorbed on Au and Ag nanoparticles at pH 3 is investigated theoretically. The molecular mechanism is proposed for controlling surface photocatalysis reaction by pH values.}}, author = {{Sun, Mengtao and Huang, Yingzhou and Xia, Lixin and Chen, Xiaowei and Xu, Hongxing}}, issn = {{1932-7447}}, language = {{eng}}, number = {{19}}, pages = {{9629--9636}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Journal of Physical Chemistry C}}, title = {{The pH-Controlled Plasmon-Assisted Surface Photocatalysis Reaction of 4-Aminothiophenol to p,p '-Dimercaptoazobenzene on Au, Ag, and Cu Colloids}}, url = {{http://dx.doi.org/10.1021/jp201002v}}, doi = {{10.1021/jp201002v}}, volume = {{115}}, year = {{2011}}, }