Selective photoreduction of nitrobenzene to aniline on TiO2 nanoparticles modified with amino acid.
The photoreduction of nitrobenzene (NB) on TiO(2) nanoparticles modified with asparagine (Asp), serine (Ser), phenylalanine (Phe) and tyrosine (Tyr), which were found to bind to TiO(2) via carboxyl group, have been investigated under high-pressure mercury irradiation. Modification of TiO(2) with Asp, Ser and Phe resulted in enhanced photocatalytic degradation rate of NB and high selective activity to aniline (AN) compared to using bare TiO(2). Furthermore, NB degradation followed a reductive approach over Asp, Ser, Phe-modified TiO(2) whether in additional of methanol or not. The result indicates that modification of TiO(2) with electron-donating groups is an effective way to enhance photoreduction of nitroaromatic compounds.
Key Lab of Biofunctional Materials of Jiangsu Province, Analysis and Testing Center, Nanjing Normal University, Nanjing 210097, PR China.
Heyong
H
Huang
Jiahong
J
Zhou
Hailong
H
Liu
Yanhuai
Y
Zhou
Yuying
Y
Feng
D000327:Adsorption; D000596:Amino Acids / Q000737:chemistry*; D000814:Aniline Compounds / Q000737:chemistry*; D002384:Catalysis; D002851:Chromatography, High Pressure Liquid; D008401:Gas Chromatography-Mass Spectrometry; D053758:Nanoparticles / Q000737:chemistry*; D009578:Nitrobenzenes / Q000737:chemistry*; D010084:Oxidation-Reduction; D010777:Photochemistry; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
D000596:Amino Acids; D000814:Aniline Compounds; D009578:Nitrobenzenes; C009495:titanium dioxide; D014025:Titanium; C036077:nitrobenzene