Photoreactivity of ZnO nanoparticles in visible light: Effect of surface states on electron transfer reaction

Sunandan Baruah; Sudarson Sekhar Sinha; Barnali Ghosh; Samir Kumar Pal; A. K. Raychaudhuri; Joydeep Dutta

doi:10.1063/1.3100221

journal article Apr 01, 2009

Photoreactivity of ZnO nanoparticles in visible light: Effect of surface states on electron transfer reaction

Sunandan Baruah

Sudarson Sekhar Sinha Barnali Ghosh

Samir Kumar Pal A. K. Raychaudhuri Joydeep Dutta

Journal of Applied Physics Vol. 105 No. 7 · AIP Publishing

View at Publisher Save 10.1063/1.3100221

Abstract

Wide band gap metal oxide semiconductors such as zinc oxide (ZnO) show visible band photolysis that has been employed, among others, to degrade harmful organic contaminants into harmless mineral acids. Metal oxides show enhanced photocatalytic activity with the increase in electronic defects in the crystallites. By introducing defects into the crystal lattice of ZnO nanoparticles, we observe a redshift in the optical absorption shifting from the ultraviolet region to the visible region (400–700 nm), which is due to the creation of intermediate defect states that inhibit the electron hole recombination process. The defects were introduced by fast nucleation and growth of the nanoparticles by rapid heating using microwave irradiation and subsequent quenching during the precipitation reaction. To elucidate the nature of the photodegradation process, picosecond resolved time correlated single photon count (TCSPC) spectroscopy was carried out to record the electronic transitions resulting from the de-excitation of the electrons to their stable states. Photodegradation and TCSPC studies showed that defect engineered ZnO nanoparticles obtained through fast crystallization during growth lead to a faster initial degradation rate of methylene blue as compared to the conventionally synthesized nanoparticles.

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References

26

[1]

Sep. Purif. Technol. (2004) 10.1016/s1383-5866(03)00176-x

[2]

Catal. Today (1999) 10.1016/s0920-5861(99)00107-8

[3]

Appl. Environ. Microbiol. (1999) 10.1128/aem.65.9.4094-4098.1999

[4]

J. Photochem. Photobiol., A (2000) 10.1016/s1010-6030(99)00205-1

[5]

J. Chem. Technol. Biotechnol. (2001) 10.1002/jctb.532

[6]

Electrochemical Photolysis of Water at a Semiconductor Electrode

Akira Fujishima, KENICHI HONDA

Nature 1972 10.1038/238037a0

[7]

J. Colloid Interface Sci. (2003) 10.1016/s0021-9797(03)00678-7

[8]

Chem. Eng. News (1996)

[9]

J. Phys. Chem. (1996) 10.1021/jp962095q

[10]

GlobalNest: The Int. J. (1999)

[11]

Environ. Sci. Technol. (1994) 10.1021/es00054a007

[12]

Surf. Sci. (1969) 10.1016/0039-6028(69)90251-9

[13]

Appl. Surf. Sci. (2004) 10.1016/j.apsusc.2003.12.012

[14]

Appl. Phys. Lett. (1995) 10.1063/1.114397

[15]

J. Hazard. Mater. (2008) 10.1016/j.jhazmat.2007.12.033

[16]

Chem. Phys. Lett. (2006) 10.1016/j.cplett.2006.02.109

[17]

J. Metastable Nanocryst. Mater. (2005)

[18]

J. Sol-Gel Sci. Technol. (2006) 10.1007/s10971-006-6969-y

[19]

[20]

TiO2-assisted photocatalytic degradation of azo dyes in aqueous solution: kinetic and mechanistic investigations

Ioannis K Konstantinou, Triantafyllos A Albanis

Applied Catalysis B: Environmental 2004 10.1016/j.apcatb.2003.11.010

[21]

J. Photochem. Photobiol., A (1995) 10.1016/1010-6030(94)04030-6

[22]

J. Photochem. Photobiol., A (2001) 10.1016/s1010-6030(01)00398-7

[23]

Catal. Today (2007) 10.1016/j.cattod.2007.02.007

[24]

Nanotechnology (2008) 10.1088/0957-4484/19/44/445704

[25]

J. Lumin. (2000) 10.1016/s0022-2313(99)00482-2

[26]

J. Chem. Phys. (1999) 10.1063/1.480200

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Details

Published: Apr 01, 2009
Vol/Issue: 105(7)

Authors

S

Sunandan Baruah

Asian Institute of Technology 1 Center of Excellence in Nanotechnology, School of Engineering and Technology, , Klong Luang, Pathumthani 12120, Thailand

S

Sudarson Sekhar Sinha

S.N. Bose National Centre for Basic Sciences 2 Unit for Nano Science and Technology, , JD Block, Sector III, Salt Lake, Kolkata 700 098, India

B

Barnali Ghosh

S.N. Bose National Centre for Basic Sciences 2 Unit for Nano Science and Technology, , JD Block, Sector III, Salt Lake, Kolkata 700 098, India

S

Samir Kumar Pal

S.N. Bose National Centre for Basic Sciences 2 Unit for Nano Science and Technology, , JD Block, Sector III, Salt Lake, Kolkata 700 098, India

A

A. K. Raychaudhuri

S.N. Bose National Centre for Basic Sciences 2 Unit for Nano Science and Technology, , JD Block, Sector III, Salt Lake, Kolkata 700 098, India

J

Joydeep Dutta

Asian Institute of Technology 1 Center of Excellence in Nanotechnology, School of Engineering and Technology, , Klong Luang, Pathumthani 12120, Thailand

Cite This Article

Sunandan Baruah, Sudarson Sekhar Sinha, Barnali Ghosh, et al. (2009). Photoreactivity of ZnO nanoparticles in visible light: Effect of surface states on electron transfer reaction. Journal of Applied Physics, 105(7). https://doi.org/10.1063/1.3100221

Photoreactivity of ZnO nanoparticles in visible light: Effect of surface states on electron transfer reaction

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