MIPs logo MIPdatabase      MIP2024 Conference banner, website is now open, register on site for important updates   
Custom Search
Reference type: Journal
Authors: Shen XT, Zhu LH, Wang N, Zhang T, Tang HQ
Article Title: Selective photocatalytic degradation of nitrobenzene facilitated by molecular imprinting with a transition state analog.
Publication date: 2014
Journal: Catalysis Today
Volume: 225
Page numbers: 164-170.
DOI: 10.1016/j.cattod.2013.07.011
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0920586113003453

Abstract: Photocatalysis with the aid of molecular imprinted photocatalysts provide a highly selective method to remove highly toxic organic pollutants (HTOPs). However, some HTOPs (e.g., nitrobenzene (NB)) cannot be used directly as template due to their low solubility or high toxicity. For removing such HTOPs, the present work designed novel molecularly imprinted polymers (MIP) coated photocatalysts (TSA-MIP-TiO2) by using transition state analog (TSA) as template. For the target pollutant NB, both 2-nitrophenol (2-NP) and 4-nitrophenol (4-NP) were respectively selected as the TSA template to prepare TSA-MIP-TiO2 (2NP-P25 and 4NP-P25). In comparison with neat Degussa P25 TiO2, the obtained TSA-MIP-TiO2 not only increased the photocatalytic degradation of NB, but also inhibited the accumulation of unwanted intermediates. In the presence of bisphenol A (BPA, 225 μmol L-1) as a non-target pollutant, the photocatalytic degradation rate constants of NB (15 μmol L-1) over 2NP-P25 and 4NP-P25 were about 4.4 and 3.6 times that over neat P25 TiO2, respectively, whereas the BPA degradation over TSA-MIP-TiO2 was slower than that over neat P25. The much enhanced photocatalytic activity and selectivity can be explained by that TSA-MIP-TiO2 possesses specific molecular recognition to the reaction transition state, which decreases the reaction apparent activation energy
Template and target information: transition state analog, TSA, 2-nitrophenol, 2-NP, 4-nitrophenol, 4-NP, nitrobenzene, NB
Author keywords: titanium dioxide, transition state analog, Molecularly imprinted polymers, selectivity, Photocatalysis

  Mister Benzene Drinkies frosty mug  Chemistry peptide mug  Beach bunny periodic table shirt


Join the Society for Molecular Imprinting
Logo of the Society for Molecular Imprinting

New items RSS feed
new items RSS feed  View latest updates

Sign-up for e-mail updates:
Choose between receiving an occasional newsletter or more frequent e-mail alerts.
Click here to go to the sign-up page.

Is your name elemental or peptidic? Enter your name and find out by clicking either of the buttons below!
Other products you may like:
view listings for MIP books on eBay:

Mickey Mouse 90th Anniversary banner