document.write( "<CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=5 CELLSPACING=0 BORDERCOLOR=#663333><TR BGCOLOR=#663333><TD HEIGHT=30 ALIGN=right><FONT COLOR=white SIZE=+1>Today's Paper</FONT>　<FONT COLOR=lightgrey> published (online)/received/accepted/etc on April 24 （3 publications）《WoS citation》<INPUT TYPE=button VALUE='Publication Page' ONCLICK=location.href='/cgi-bin/publication/db_publication_e.cgi?check_05=CHECKED&order=descent&showCitation=CHECKED'></FONT></TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333 TITLE='Polypropylene (PP) film (thickness 44-47 μm) containing 0・25 wt% of titanium dioxide (TiO2) powder was photoirradiated for times up to 200 h at room temperature in air. Among the TiO2 powders used in this work, extrafine particles of P-25 TiO2 (Nippon Aerosil) alone led to the degradation of the film, as detected by change in color, whitening, and marked decrease in the elongation at break. Transmission electron microscopic measurement revealed that voids around the P-25 particles in the film were produced by TiO2-photocatalytic oxidation, causing the whitening and decrease of mechanical characteristics.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ PPP・1989 (full paper)　《41》 NEWSYS［published online 2003/04/24］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD><B>Ohtani, B.</B>; Adzuma, S.; Miyadzu, H.; Nishimoto, S.-i.; Kagiya, T., Photocatalytic Degradation of Polypropylene Film by Dispersed Titanium Dioxide Particles, <I>Polym. Degrad. Stabil.</I>, <B>23</B>, 271-278 (1989).* [<A HREF='http://dx.doi.org/10.1016/0141-3910(89)90101-8'>DOI</A>] ●ポリプロピレンフィルムの分解</TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333 TITLE='Photocatalytic reaction at 298 K by platinum-loaded titanium(IV) oxide (TiO2−Pt) particles suspended in deaerated aqueous solutions of 2-propanol or (S)-lysine (Lys) was investigated. The TiO2 catalysts with various amounts of Pt loadings were prepared by impregnation from aqueous chloroplatinic acid solution onto a commercial TiO2 (Degussa P-25) followed by hydrogen reduction at 753 K. The physical properties of deposited Pt, e.g., particle size, surface area, and electronic state, were studied respectively by transmission electron microscopy, volumetric gas adsorption measurement, and X-ray photoelectron spectroscopy as well as infrared spectroscopy of adsorbed carbon monoxide. The increase in Pt amount mainly resulted in an increase of the number of Pt deposits, not of their size. The catalysts were suspended in the aqueous solutions and photoirradiated at a wavelength &gt;300 nm under an argon (Ar) atmosphere. The overall rate of photocatalytic reactions for both 2-propanol and Lys, corresponding to the rate of consumption of these substrates, was negligible without Pt loading, increased drastically with the loading up to ca. 0.3%, and was almost constant or a little decreased by the further loadings. However, the rate of formation of pipecolinic acid (PCA) from Lys was improved gradually with a increase of Pt loading up to ca. 2 wt %. These dependences were discussed as a function of Pt surface area, which is employed as a measure that includes the properties of both number and size of Pt deposits. For the photocatalytic dehydrogenation of 2-propanol, the rate dependence could be interpreted semiquantitatively with the model that only the TiO2 particles loaded with at least one Pt deposit can photocatalyze, but the reaction rate is independent of the number of Pt deposits. Therefore, the overall rate is proportional to the number of Pt-loaded TiO2 particles. On the other hand, for the interpretation of the rate of PCA and H2 productions, the number of Pt deposits on each TiO2 particle had to be taken into account. The efficient production of PCA at higher Pt loadings was attributed to the reduction of a Schiff base intermediate produced via oxidation of Lys with positive holes and subsequent intramolecular condensation at the Pt deposit that is close to the site for the oxidation. Otherwise, photoexcited electrons are consumed for H2 production and the intermediate remains unreduced or undergoes further oxidation. It was suggested that the intermediate produced at the TiO2 surface sites within a distance of several nanometers from the Pt deposit undergoes efficient reduction to PCA. Thus, the importance of the distribution of Pt deposits for the preparation of highly active and selective TiO2−Pt photocatalyst has been clearly demonstrated.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ IWA・1997 (full paper)　《256》 ACTIVE［published online 1997/04/24］</FONT> <IMG SRC='/image/misc/huscap.png' HEIGHT=15 VARIGN=bottom></SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD><B>Ohtani, B.</B>*; Iwai, K.; Nishimoto, S.-i.; Sato, S., Role of Platinum Deposits on Titanium(IV) Oxide Particles: Structural and Kinetic Analyses of Photocatalytic Reaction in Aqueous Alcohol and Amino Acid Solutions, <I>J. Phys. Chem. B.</I>, <B>101</B>, 3349-3359 (1997).* [<A HREF='http://dx.doi.org/10.1021/jp962060q'>DOI</A>] [<A HREF='http://hdl.handle.net/2115/52792'>HUSCAP</A>] ●担持白金粒子の分布が反応速度にあたえる影響を解析し，P25のような数十ナノメートルの酸化チタン粒子の場合，メタノール脱水素反応ではひとつの酸化チタン粒子に1つの白金粒子が担持されていれば十分であるが，リシンからのピペコリン酸合成では高密度に白金粒子が担持されている方が活性と選択性が向上することを見いだした．粒子サイズや「ひとつの粒子上の助触媒粒子の数」という概念を導入した最初の論文．</TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=「」></A>■ REMI4・2020 (解説) REVIEW［received 2020/04/24］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD>大谷文章，光触媒研究レミニセンス（4）作用スペクトルと光強度依存性，会報光触媒，61，60-93（2020）</TD></TR></TABLE></CENTER>" )