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 July 10 （8 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='Slightly yello-colored poly(vinyl alcohol) (PVA) films were prepared at room temperature by cast-drying of aqueous PVA solution containing methyl viologen (MV2+) salt (dichloride and difluoroborate) and methyl pyrrolidone (MP). The electronic absorption spectrum showed broad absorption with a maximum at 416 nm which could not be observed in the spectra of each component. The counteranions of MV2+, e.g. chloride and fluoroborate, were not responsible for this absorption. Absorption spectroscopic analyses revealed the formation of a charge-transfer (CT) complex between MV2+ and MP, with a molar ratio of 1:2, in the PVA matrix. The equilibrium constant and the extinction coefficient of the CT absorption at the maximum were determined to be 0.048 mmol−2 g-film2 and 6250 cm−1 mmol−1 g-film respectively. Visible light irradiation induced the reduction of MV2+ into intensely blue-colored cation radical (MV・+) even under aerated conditions. Negligible influence of the counteranion of MV2+ on the visible light (greater than 370 nm) induced reduction was detected. The action spectrum of the MV・+ formation, obtained by monochromatic irradiation, corresponded to the original absorption spectrum of the CT complex. The quantum yield for the MV2+ reduction was 0.007 for the irradiation at a wavelength of 405 nm.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ DOS・1991 (full paper)　《1》 OTHERS［received 1990/07/10］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD><B>Ohtani, B.</B>; Ye, M.; Miyadzu, H.; Nishimoto, S.-i.; Kagiya, T., Visible light Induced Reduction of Methyl Viologen in Poly(vinyl Alcohol) Film Containing N-Methyl-2-pyrrolidone, <I>J. Photochem. Photobiol. A: Chem.</I>, <B>56</B>, 359-364 (1991).* [<A HREF='http://dx.doi.org/10.1016/1010-6030(91)80035-G'>DOI</A>] ●N-メチル-2-ピロリドンとメチルビオロゲンをふくむポリビニルアルコール膜中で，電荷移動錯体が形成され，その可視光光吸収によって，メチルビオロゲンカチオンラジカルが生成することから，可視光に対するドジメータとなることをしめした．</TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333 TITLE='Photoirradiation of the light ow wavelength &gt; 300 nm onto suspension of titanium(IV) oxide (TiO2, anatase, TiO2(A), and rutile TiO2(R)) in aqueous solution of silver salts and aliphatic alcohols led to the evolution of molecular oxygen (O2), the deposition of silver metal (Ag) ont the surface of TiO2, and the oxidation of alcohols.  The product distribution was studied by using some aliphatic alcohols (methanol, ethanol, 2-propanol and tert-butylalcohol) and inorganic and organic silver salts (sulfate, perchlorate, nitrate, fluoride and acetate).  Kinetic analyses were performed with aqueous suspension containing 2-propanol and silver sulfate.  Dependence of the formation rates of products (O2, acetone and Ag) on the concentration of 2-propanol in suspension (Cp) was analyzed on the assumption of a mechanism including reductive and oxidative trappings of pairs of photoexcited electron (e-)-positive hole (h+) by surface-adsorbed substrates, which react with the pair to produce free active species, e- and h+, with sufficient ability for subsequent redox reactions.  It is presumed that coverage of surface sites with 2-propanol via Langmuirian adsorption determines the distribution of free h+ generated by the reductive trapping by silver ion (Ag+).  The Cp dependence of the rate in TiO2(A) suspension was consistent with the proposed mechanism and some kinetic and adsorption parameters were obtained.  For the results in TiO2(R) suspension, it was necessary to suppose additional oxidation sites for not acetone but O2 production, suggesting the characteristics in the O2 evolution mechanism of TiO2(R).  Dependence of the rate of acetone formation on the concentration of silver ion (Ca) was also analyzed for both TiO2 suspensions.  By using the parameters obtained from the Cp dependence, the apparent Cadependence could be reasonably reproduced according to the proposed mechanism.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ PAG・1993 (full paper)　《122》 MECHAN［received 1992/07/10］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD><B>Ohtani, B.</B>*; Nishimoto, S.-i., Effect of Surface Adsorptions of Aliphatic Alcohols and Silver Ion on the Photocatalytic Activity of TiO<SUB>2</SUB> Suspended in Aqueous Solutions, <I>J. Phys. Chem.</I>, <B>97</B>, 920-926 (1993).* [<A HREF='http://dx.doi.org/10.1021/j100106a018'>DOI</A>] ●銀イオンおよび2-プロパノールの吸着量に注目して反応速度を解析し，反応速度が吸着量支配であることを明らかにした．</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)　《263》 ACTIVE［received 1996/07/10］</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 TITLE='Layer-by-layer self-assembly of composite thin films of cadmium sulfide (CdS) nanoparticle and alkanedithiol was achieved on a gold substrate by an alternate immersion into solutions of dithiols (1,6-hexanedithiol and 1,10-decanedithiol) and solution containing CdS nanoparticles (ca. 3 nm in diameter). The layer-by-layer structure was confirmed by angle-resolved X-ray photoelectron spectroscopy (XPS) at each composite-film preparation step. The proposed structure and mechanism of self-assembly were in agreement with our previous results obtained by Fourier transform infrared reflection-absorption spectroscopy.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ NAK・1997 (letter)　《59》 FUNCTI_B［received 1997/07/10］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD>Nakanishi, T.; <B>Ohtani, B.</B>; Shimazu, K.; Uosaki, K., Layer-by-layer Self-assembly of Composite Films of CdS Nanoparticle and Alkanedithiol on Gold: an X-ray Photoelectron Spectroscopic Characterization, <I>Chem. Phys. Lett.</I>, <B>278</B>, 233-237 (1997).* [<A HREF='http://dx.doi.org/10.1016/S0009-2614(97)01069-5'>DOI</A>]</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>■ HKT・2007 (解説) REVIEW［published 2007/07/10］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD>大谷文章・阿部竜，可視光誘起光触媒反応　─白金担持酸化タングステン光触媒を用いる高効率可視光有機物分解─，光触媒，23，58-63（2007） [<A HREF='http://pfma.main.jp/DLFile/2014KaihouContents.pdf'>LINK</A>]</TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333 TITLE='Regarding catalytic and plasmonic properties of gold nanoparticles (NPs), the novel area of research on photocatalytic gold properties has been recently started. In contrast with catalytically active gold NPs, where nanosized gold is recommended, our results showed that polydispersity of deposited gold NPs on semiconducting support was beneficial for photocatalytic activity under visible light irradiation. It is thought that wide size/shape distribution of gold NPs, and thus the ability of absorption of light in a wide wavelengths range is responsible for the high level of photoactivity. Though desirable absorption properties of plasmonic photocatalysts can be easily obtained by preparation of nanoparticles of different sizes and shapes, their photocatalytic activities under visible light irradiation are still low and should be enanced. The improvement of photocatalytic activities under visible light irradiation was achieved by enlargement of interfacial contact between titania and NPs of noble metals, extension of photoabsorption ranges (by preparation of NPs of various sizes and shapes or composed of two kinds of noble metals), and by deposition of noble metals NPs on faceted titania, i.e., octahedral (OAPs) and decahedral (DAPs). Plasmonic photocatalysts composed of titania and NPs of silver, gold or copper showed also high antiseptic properties under visible light irradiation, due to possible synergism of antiseptic properties of noble metals and photodisinfection properties of photocatalyst, since reactive oxygen species or photogenerated holes are formed on the surface of irradiated semiconductor.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ PLASM・2014 (full paper) VISIBL_A［accepted 2014/07/10］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD><B>Kowalska, E.</B>; <B>Wei, Z.</B>; <B>Karabiyik, B.</B>; <B>Janczarek, M.</B>; <B>Endo-Kimura, M.</B>; <B>Wang, K.</B>; <B>Rokicka, P.</B>; <B>Markowska-Szczupak, A.</B>; <B>Ohtani, B.</B>, Development of plasmonic photocatalysts for environmental application, <I>Adv. Sci. Tech.</I>, <B>93</B>, 174-183 (2014).* [<A HREF='http://dx.doi.org/10.4028/www.scientific.net/AST.93.174'>DOI</A>] [<A HREF='http://www.ttp.net/978-3-03835-306-5.html'>LINK</A>]</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>■ QUART・2020 (四分法) REVIEW［published 2020/07/10］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD>大谷文章，四分法，粉体工学会誌，57，309（2020）</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>■ BHYDR・2023 (Chapter) BOOKPT［received 2022/07/10］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD><B>Ohtani, B.</B>; <B>Akanda, M. A.</B>; <B>Amalia, F. R.</B>; <B>Takashima, M.</B>, Fundamentals and Concepts of Photocatalytic Hydrogen Evolution, <I>Photocatalytic Hydrogen Production for Sustainable Energy</I>, published (2023). [<A HREF='https://www.wiley.com/en-us/Photocatalytic＋Hydrogen＋Production＋for＋Sustainable＋Energy-p-9783527349838'>LINK</A>]</TD></TR></TABLE></CENTER>" )