TY - JOUR
T1 - A review of solar and visible light active TiO2 photocatalysis for treating bacteria, cyanotoxins and contaminants of emerging concern
AU - Fagan, Rachel
AU - McCormack, Declan E.
AU - Dionysiou, Dionysios D.
AU - Pillai, Suresh C.
N1 - Funding Information:
Prof. Suresh C. Pillai obtained his PhD in the area of Nanotechnology from Trinity College Dublin and then performed a postdoctoral research at California Institute of Technology (Caltech), USA. Upon completion of this appointment he returned to Trinity College Dublin as a Research Fellow before joining CREST-DIT as a Senior Research Manager in April 2004. Suresh joined in IT Sligo as a Senior Lecturer in Environmental Nanotechnology in October 2013. He is an elected fellow of the UK's Royal Microscopical Society (FRMS) and the Institute of Materials, Minerals and Mining (FIMMM). Suresh was responsible for acquiring more than €3 million direct R&D funding. He has published several scientific articles in leading peer reviewed journals and has presented in several international conferences. He has delivered over forty international invited talks including several key-note and plenary talks. He was also the recipient of the “Hothouse Commercialisation Award 2009” from the Minister of Science, Technology and Innovation and also the recipient of the “Enterprise Ireland Research Commercialisation Award 2009”. He has also been nominated for the “One to Watch” award 2009 for commercialising R&D work (Enterprise Ireland). He has worked as the national delegate and technical expert for ISO standardization committee and European standardization (CEN) committee on photocatalytic materials.
Funding Information:
This work was carried out as part of the US-Ireland collaborative Initiative on ‘Degradation Mechanism of Cyanotoxins Using Novel Visible Light-Activated Titania (TiO 2 ) Photocatalysts.’ The National Science Foundation funded the University of Cincinnati ( NSF CBET-Award1033317 ) and Science Foundation Ireland (SFI) provided funding to DIT and Institute of Technology Sligo, Ireland (SFI Grant number 10/US/I1822(T) ). D. D. Dionysiou also acknowledges support from the University of Cincinnati through a UNESCO co-Chair Professor position on “Water Access and Sustainability”.
Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2016/2/1
Y1 - 2016/2/1
N2 - Research into the development of solar and visible light active photocatalysts has been significantly increased in recent years due to its wide range of applications in treating contaminants of emerging concern (CECs), endocrine disrupting compounds (EDCs), bacteria and cyanotoxins. Solar photocatalysis is found to be highly effective in treating a wide range of CECs from sources such as pharmaceuticals, steroids, antibiotics, phthalates, disinfectants, pesticides, fragrances (musk), preservatives and additives. Similarly, a number of EDCs including polycyclic aromatic hydrocarbons (PAHs), alkylphenols (APs), bisphenol A (BPA), organotins (OTs), volatile organic compounds (VOCs), natural and synthetic estrogenic and androgenic chemicals, pesticides, and heavy metals can be removed from contaminated water by using solar photocatalysis. Photocatalysis was also found effective in treating a wide range of bacteria such as Staphylococcus aureus, Bacillus subtilis, Escherichia coli, Salmonella typhi and Micrococcus lylae. The current review also compares the effectiveness of various visible light activated TiO2 photocatalysts for treating these pollutants. Doping or co-doping of TiO2 using nitrogen, nitrogen-silver, sulphur, carbon, copper and also incorporation of graphene nano-sheets are discussed. The use of immobilised TiO2 for improving the photocatalytic activity is also presented. Decorating titania photocatalyst with graphene oxide (GO) is of particular interest due to GO's ability to increase the photocatalytic activity of TiO2. The use GO to increase the photocatalytic activity of TiO2 against microcystin-LR (MC-LR) under UV-A and solar irciation is discussed. The enhanced photocatalytic activity of GO-TiO2 compared to the control material is attributed to the effective inhibition of the electron-hole recombination by controlling the interfacial charge transfer process. It is concluded that there is a critical need for further improvement of the efficiency of these materials if they are to be considered for bulk industrial use.
AB - Research into the development of solar and visible light active photocatalysts has been significantly increased in recent years due to its wide range of applications in treating contaminants of emerging concern (CECs), endocrine disrupting compounds (EDCs), bacteria and cyanotoxins. Solar photocatalysis is found to be highly effective in treating a wide range of CECs from sources such as pharmaceuticals, steroids, antibiotics, phthalates, disinfectants, pesticides, fragrances (musk), preservatives and additives. Similarly, a number of EDCs including polycyclic aromatic hydrocarbons (PAHs), alkylphenols (APs), bisphenol A (BPA), organotins (OTs), volatile organic compounds (VOCs), natural and synthetic estrogenic and androgenic chemicals, pesticides, and heavy metals can be removed from contaminated water by using solar photocatalysis. Photocatalysis was also found effective in treating a wide range of bacteria such as Staphylococcus aureus, Bacillus subtilis, Escherichia coli, Salmonella typhi and Micrococcus lylae. The current review also compares the effectiveness of various visible light activated TiO2 photocatalysts for treating these pollutants. Doping or co-doping of TiO2 using nitrogen, nitrogen-silver, sulphur, carbon, copper and also incorporation of graphene nano-sheets are discussed. The use of immobilised TiO2 for improving the photocatalytic activity is also presented. Decorating titania photocatalyst with graphene oxide (GO) is of particular interest due to GO's ability to increase the photocatalytic activity of TiO2. The use GO to increase the photocatalytic activity of TiO2 against microcystin-LR (MC-LR) under UV-A and solar irciation is discussed. The enhanced photocatalytic activity of GO-TiO2 compared to the control material is attributed to the effective inhibition of the electron-hole recombination by controlling the interfacial charge transfer process. It is concluded that there is a critical need for further improvement of the efficiency of these materials if they are to be considered for bulk industrial use.
KW - Antibiotics
KW - Disinfection
KW - Emerging contaminants
KW - Graphene
KW - Photocatalytic
KW - Steroids
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U2 - 10.1016/j.mssp.2015.07.052
DO - 10.1016/j.mssp.2015.07.052
M3 - Review article
AN - SCOPUS:84958905561
SN - 1369-8001
VL - 42
SP - 2
EP - 14
JO - Materials Science in Semiconductor Processing
JF - Materials Science in Semiconductor Processing
ER -