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Hindawi Publishing CorporationInternational Journal of PhotoenergyVolume 2008, Article ID 258561, 2 pagesdoi:10.1155/2008/258561
EditorialPreface to the Special Issue on Selected Papers fromthe Second International Conference on SemiconductorPhotochemistry SP-2
Russell F. Howe,1 Peter K. J. Robertson,2 and Andrew Mills3
1 Department of Chemistry, The University of Aberdeen, Old Aberdeen AB24 3UE, UK2 Centre for Research in Energy and the Environment, The Robert Gordon University, Schoolhill, Aberdeen AB10 1FR, UK3 Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building,295 Cathedral Street, Glasgow G1 IXL, UK
Correspondence should be addressed to Peter K. J. Robertson, [email protected]
Received 24 December 2008; Accepted 24 December 2008
Copyright © 2008 Russell F. Howe et al. This is an open access article distributed under the Creative Commons AttributionLicense, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properlycited.
The Second International Conference on SemiconductorPhotochemistry (SP-2) was set up following the highlysuccessful SP-1 meeting held in Glasgow in July 2001. Theconference was scheduled over three days from Monday 23rdJuly to Wednesday 25th of July 2007 (coincidentally thesame days over which SP-1 was held in 2001) at The RobertGordon University in Aberdeen in the north east of Scotland.As with SP-1, the primary objective of the organisers wasto host an inclusive and affordable conference designed toreach as wide an audience as possible. As a result, the meetingagain was organised on a nonprofit basis, with an intenseprogramme and few additional “added extras.” The delegatefee was established at an affordable rate of £150 for fulldelegates and £75 for students which covered attendance ofthe full conference programme, morning and afternoon tea,and lunch. The ability to allow the low registration fee wasfacilitated by the very generous support of the conferencesponsors and we are extremely grateful to these sponsors whoincluded: Degussa-Huels, Millennium Chemicals, JohnsonMatthey, Pilkington Technology, Apache, Halliburton, theRobert Gordon University, the Society of Chemical Indus-try (SCI), and Hindawi Publishing Corporation for theirsupport. This sponsorship was in various forms, including,money (Degussa-Huels, Millennium Chemicals, JohnsonMatthey, Pilkington Technology, and the Society of Chem-ical Industry), the conference venue (The Robert GordonUniversity), conference bags (Halliburton and Apache), andsupport for the conference proceedings (Hindawi PublishingCorporation). The Aberdeen Ambassadors provided an
accommodation booking service covering a range of hotelaccommodation across the city, and alternative accommoda-tion in the university halls of residence was also available.
The programme started each day at 8.30 am and finishedat 18.00. In order to ensure that all participants were ableto attend the whole programme, no parallel sessions werescheduled. On Monday and Tuesday evenings, a postersession was held with some liquid refreshment to “facilitate”the networking process. All those who wanted to lecture weregiven the opportunity to speak, usually for 25 minutes andonly three specially invited lecturers were given extendedlecture slots of 40 minutes. It was very heartening to findthat all the big names in the field agreed unhesitatingly tobe present at the conference, even when offered only a 25-minute slot so as to allow many others, possibly less wellknown, to speak. The conference proved to be exceptionallypopular, attracting 200 participants from 34 nations; andthe papers contained in this special edition provide justsome measure of the diversity of subjects presented anddiscussed. The conference concluded with a civic receptionat the historic Town House in Aberdeen City kindly providedby the Lord Provost and Aberdeen City Council. Plans for SP-3 are already well developed and it is planned to hold this inGlasgow in 12–16th April, 2010 (see http://sp3.ukspc.org.uk/for further details).
Semiconductor photochemistry has been a topic ofintense research interest over the past 25 years, especiallywith respect to studies utilising titanium dioxide. Theresearch activity has significantly diversified from the early
2 International Journal of Photoenergy
work on photomineralisation of contaminants in water. Thisis demonstrated by the range of subjects covered in thisspecial edition which include materials preparation, waterand air purification, antibacterial effects, sensing propertiesof semiconductor films, and reactor engineering.
The properties of titania sol-gel catalysts depend stronglyon the preparation conditions. The factors involved are dis-cussed in the article by Marugan et al. Visible-light activationof titania photocatalysts is a widely sought objective; Irvineet al. describe a new approach to the preparation of suchcatalysts. Although titania has been the most widely studiedphotocatalyst, other transition metal oxides also warrantattention: Liang et al. report the photoelectrochemicalcharacterisation of iron-oxide thin films. Yates et al. describethe visible and UV activity of thin silver films prepared byatmospheric pressure chemical vapour deposition (CVD).Mills and Crow have investigated the factors influencingthe wettability of titania films, while Sheel et al. describethe photoactivity of thin silver films and of silver-titaniacomposite films, particularly for biocidal activity. The thin-film theme is continued by Skubal et al., who reviewedtheir work on self detection and decontamination. The useof oxide semiconductors to detect oxygen through UV-activated luminescence is reported by Mills et al. Dye-sensitized solar cells were reviewed in a plenary presentationby Michael Gratzel; in this volume Holliman et al. describestudies of the uptake of dyes by titania. Mills et al. report anew rapid method for assessing the photocatalytic activityof thin titania films. Reaction pathways in the gas-phasedegradation of decane and methanol have been investigatedby Balcerski et al., using DRIFT spectroscopy, while Pucheret al. have combined adsorption and photocatalysis in areactor for gas cleaning. Flores et al. have assessed thedurability of silver-modified titania catalysts for degradationof dichloroacetic acid. Removal of hydrocarbons from water,with particular emphasis on reactor design, is covered byAdams et al., while photocatalytic degradation of pesticidesis described by Boxall and Muneer. Finally, Mohamed et al.report on the partial oxidation of organic compounds viaphotocatalysis, a rather neglected subject in comparison withcomplete oxidation or degradation.
In conclusion, semiconductor photochemistry remains avery active field of research from which a range of practicalapplications with vast commercial potential is emerging. Itwill be interesting to see how the field has further developedat SP-3 in 2010. This conference will build on the aimsof the previous meetings and feature an additional 1 dayinternational postgraduate symposium so that the youngerresearchers in the field have an opportunity to present.
Russell F. HowePeter K. J. Robertson
Andrew Mills
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