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 October 15 （9 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='The photocatalytic reaction (excitation wavelength, greater than 300 nm) of neat alcohols (ethanol or 2-propanol) by metal-loaded titanium(IV) oxide (TiO2) was conducted under argon at room temperature. The dehydrogenation products hydrogen (H2) and acetaldehyde (or acetone in the case of 2-propanol) were found in the absence of additives. The corresponding acetals, ethers, and alkanes were obtained by the addition of concentrated hydrochloric acid (HCl). The measurement of the product yields during the post-irradiation dark reaction in the presence of photocatalyst (TiO2) loaded with platinum(IV) oxide (PtO2) revealed that the production of ether and ethane and the regeneration of ethanol proceed by the hydrogenation of acetal over loaded metal, presumably via a hemiacetal intermediate. X-ray diffraction (XRD) analyses showed that the loaded PtO2 is reduced to platinum metal during the course of the photocatalytic reaction. For the production of ether from HCl-acidified ethanol, Pd-loaded catalysts, especially prepared by precipitation-reduction, exhibit the highest activity of several metal-loaded TiO2 catalysts. From XRD and X-ray photoelectron spectroscopy studies of Pd-loaded TiO2 particles, it was shown that the smaller the size of the Pd particles, the higher the selectivity for ether production from the acidified ethanol suspension. The application of this photocatalytic O-alkylation to the synthesis of cyclic ethers was demonstrated.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ ACE・1993 (full paper)　《79》 NEWSYS［accepted 1992/10/15］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD><B>Ohtani, B.</B>; Kakimoto, M.; Nishimoto, S.-i.; Kagiya, T., Photocatalytic Reaction of Neat Alcohols by Metal-loaded Titanium(IV) Oxide Particles, <I>J. Photochem. Photobiol. A:Chem.</I>, <B>70</B>, 265-272 (1993).* [<A HREF='http://dx.doi.org/10.1016/1010-6030(93)85052-A'>DOI</A>] ●アルコールを溶媒兼反応基質とする光触媒反応について，助触媒としての酸化白金の役割と反応機構をあきらかにした．</TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333 TITLE='We have synthesized S (S4+)-doped and N (N3-)-doped TiO2 photocatalysts. S-doped and N-doped TiO2 loaded with Fe2O3 nanoparticles have also been prepared. These photocatalysts showed activity under a wide range of wavelengths of irradiation. Action spectra of photochemical reaction rate as a function of the incident light wavelength for oxidation of acetic acid on S-doped TiO2 was studied.The photocatalytic activities of S-doped and N-doped TiO2 photocatalysts loaded with Fe2O3 nanoparticles for oxidation of acetic acid in aqueous phase and acetaldehyde in gas phase are markedly improved compared to those of doped TiO2 without loading｜of Fe2O3 nanoparticles under a wide range of incident light wavelengths. The optimum amount of Fe2O3 nanoparticles loaded on S-doped TiO2 particles was different from that on N-doped TiO2 for oxidation of organic compounds. The relationship between reaction rate of photocatalytic oxidation of acetaldehyde on doped TiO2 loaded with Fe2O3 nanoparticles and amount of Fe2O3 nanoparticles is discussed.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ NSJ・2007 (full paper)　《76》 ACTION［published 2007/10/15］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD>Nishijima, K.; <B>Ohtani, B.</B>; <B>Yan, X.</B>; Kamai, T.-a.; Chiyoya, T.; Tsubota, T.; <B>Murakami, N.</B>; Ohno, T.*, Incident light dependence for photocatalytic degradation of acetaldehyde and acetic acid on S-doped and N-doped TiO<SUB>2</SUB> photocatalyst, <I>Chem. Phys.</I>, <B>339</B>, 64-72 (2007).* [<A HREF='http://dx.doi.org/10.1016/j.chemphys.2007.06.014'>DOI</A>] ●イオウ/窒素ドープ酸化チタンによる光触媒反応の作用スペクトル解析をふくむ共同研究</TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333 TITLE='コアとなる光触媒微粒子をシリカなどの薄膜シェルに内包させ，かつ，コアとシェルの間に空隙をもつ「中空コア─シェル型」光触媒を調製した．これを用いると，裸のコアだけからなる粒子や，コアとシェルが密着して空隙がない粒子では見られない，高効率で選択的な光触媒反応が進行することを見いだした．この「中空コア─シェル型」光触媒を中心にして光触媒反応による有機合成の試みについて解説する．'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=「」></A>■ ZFC・2007 (特集) REVIEW［published 2007/10/15］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD>大谷文章・鳥本司・池田茂，構造を制御した光触媒による有機合成の試み，月刊ファインケミカル，36，57-65（2007） [<A HREF='https://www.cmcbooks.co.jp/products/detail.php?product_id=3927'>LINK</A>]</TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333 TITLE='Overall water splitting was accomplished using a RuO2-TaON and Pt-TaON mixture with IO3-/I- redox couple under visible light (lambda &lt; 500 nm).  This is the first example of overall water splitting base on an oxynitride photocatalyst including a transition-metal element with d0-electronic configuration.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ ABD02・2008 (letter)　《151》 NEWSYS［received 2007/10/15］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD><B>Higashi, M.</B>; <B>Abe, R.</B>; Ishikawa, A.; Takata, T.; <B>Ohtani, B.</B>; Domen, K.*, Z-scheme overall water splitting on modified-TaON photocatalysts under visible light (lambda &lt; 500 nm), <I>Chem. Lett.</I>, <B>37</B>, 138-139 (2008).* [<A HREF='http://dx.doi.org/10.1246/cl.2008.138'>DOI</A>] ●修飾タンタル酸窒化物（TaON）によるZ-スキーム型光触媒反応による水の完全分解の速報．東正信博士が東京大学在籍中の研究を中心にしてまとめた論文．大谷教授と堂免一成教授（東京大学/信州大学）の共著の論文2つのうちの1つ．</TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333 TITLE='Samples of TiO2, calcined at 350 ℃, 400 ℃, 450 ℃ and 500 ℃, have been prepared without and with water rinsing. The crystallite sizes were determined to be below 32 nm for all types of samples.  Temperature dependence of magnetic resonance spectra of the obtained samples has been investigated.  The electron paramagnetic resonance (EPR) spectra of free radicals were recorded for all samples, non-rinsed and water-rinsed, centered between geff=2.0027(3) and geff=2.0032(3) with linewidths ΔHpp=5(1) G and ΔHpp=8(1) G. The temperature dependence of the EPR integrated intensities has shown the presence of different relaxation processes operating in high temperature range, which could have arisen due to different concentrations of conducting electrons. For the water-rinsed sample annealed at 400 ℃ the ferromagnetic resonance (FMR) spectrum of magnetic agglomerates was recorded.  Very intense reorientation processes of a correlated spin system have been observed in different temperature ranges. The EPR spectra of trivalent titanium ions were registered in all samples. The number of oxygen vacancies could have increased, possibly involving complexes and agglomerates containing trivalent titanium ions.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ MRWSK・2012 (full paper)　《18》 ACTION［published 2012/10/15］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD>Guskos, N.; Guskos, A.; Zolnierkiwicz, G.; Typek, J.; Berczynski, P.; <B>Dolat, D. D.</B>; Grzmil, B.; <B>Ohtani, B.</B>; Morawski, A. W., EPR, spectroscopic and photocatalytic properties of N-modified TiO<SUB>2</SUB> prepared by different annealing and water-rinsing processes, <I>Mater. Chem. Phys.</I>, <B>136</B>, 889-896 (2012).* [<A HREF='http://dx.doi.org/10.1016/j.matchemphys.2012.07.062'>DOI</A>] ●窒素ドープ酸化チタンによる光触媒反応の作用スペクトル解析をふくむ国際共同研究</TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333 TITLE='Hollow core-shell particles of a titania core and a silica shell, the latter of which was highly porous, water-swollen and not directly connected to the former, were synthesized by a multistep process including carbon and silica coatings followed by calcination of the carbon-layer combustion. The core-shell particles suspended in aqueous solutions of L-lysine showed improved stereoselectivity in photocatalytic redox-combined synthesis of L-pipecolinic acid (L-PCA), maintaining L-lysine conversion and PCA selectivity, compared with that by bare titania particles, presumably due to the acidic microenvironment of the titania core to control the position of oxidation by positive holes as the first step of the redox-combined process. Modification of the silica layers to acidify them was also beneficial for improvement of optical purity of the product, PCA.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ SHEEL・2012 (regular paper)　《12》 REDOXC［published 2012/10/15］</FONT> <IMG SRC='/image/misc/huscap.png' HEIGHT=15 VARIGN=bottom></SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD><B>Chandren, S.</B>; <B>Ohtani, B.</B>, Preparation, characterization and photocatalytic performance of titania particles encapsulated in hollow silica shells as an efficient photocatalyst for redox-combined stereoselective synthesis of <I>L</I>-pipecolinic acid from <I>L</I>-lysine, <I>J. Photochem. Photobiol. A: Chem.</I>, <B>246</B>, 50-59 (2012).* [<A HREF='http://dx.doi.org/10.1016/j.jphotochem.2012.07.007'>DOI</A>] [<A HREF='http://hdl.handle.net/2115/50408'>HUSCAP</A>] ●中空コアシェル構造酸化チタン光触媒によるL-リシンの脱アミノ環化反応において，シリカシェルと酸化チタンコアの空隙を制御することによって，反応速度や生成物選択性が変化することなく，L-ピペコリン酸の光学活性を向上させることに成功した．シリカシェルが水懸濁状態で膨潤してスポンジ状となり，酸化チタン表面近傍まで拡張して反応場のpHを低下させるという反応機構を提案した．</TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333 TITLE='Water splitting into H2 and O2 under visible light was achieved using simple organic dyes such as coumarin and carbazole as photosensitizers on an n-type semiconductor for H2 evolution, a tungsten(VI) oxide (WO3) photocatalyst for O2 evolution, and a triiodide/iodide (I3-/I-) redox couple as a shuttle electron mediator between them. The results on electrochemical measurements revealed that the oxidized states of the dye molecules having an oligothiophene moiety (two or more thiophene rings) in their structures are relatively stable even in water and possess sufficiently long lifetimes to exhibit reversible oxidation-reduction cycles, while the carbazole system required more thiophene rings than the coumarin one to be substantially stabilized. The long lifetimes of the oxidized states enabled these dye molecules to be regenerated to the original states by accepting an electron from the I- electron donor even in an aqueous solution, achieving sustained H2 and I3- production from an aqueous KI solution under visible light irradiation when they were combined with an appropriate n-type semiconductor, ion-exchangeable layered niobate H4Nb6O17. The use of H4Nb6O17 loaded with Pt cocatalyst inside the interlayer allowed the water reduction to proceed preferentially with a steady rate even in the presence of a considerable amount of I3- in the solution, due to the inhibited access of I3- to the reduction site, Pt particles inside, by the electrostatic repulsion between the I3- anions and the negatively charged (Nb6O17)4- layers. It was also revealed that the WO3 particles coloaded with Pt and IrO2 catalysts exhibited higher rates of O2 evolution than the WO3 particles loaded only with Pt in aqueous solutions containing a considerable amount of I-, which competitively consumes the holes and lowers the rate of O2 evolution on WO3 photocatalysts. The enhanced O2 evolution is certainly due to the improved selectivity of holes toward water oxidation on IrO2 cocatalyst, instead of undesirable oxidation of I-. Simultaneous evolution of H2 and O2 under visible light was then achieved by combining the Pt/H4Nb6O17 semiconductor sensitized with the dye molecules having an oligothiophene moiety, which can stably generate H2 and I3- from an aqueous KI solution, with the IrO2-Pt-loaded WO3 photocatalyst that can reduce the I3- back to I- and oxidize water to O2.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ DYESP・2013 (article)　《237》 VISIBL_D［accepted 2013/10/15］</FONT> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD><B>Abe, R.</B>*; <B>Shinmei, K.</B>; Koumura, N.; Hara, K.; <B>Ohtani, B.</B>, Visible-Light-Induced Water Splitting Based on Two-step Photoexcitation between Dye-Sensitized Layered Niobate and Tungsten Oxide Photocatalysts in the Presence of Triiodide/Iodide Shuttle Redox Mediator, <I>J. Am. Chem. Soc.</I>, <B>135</B>, 16872-16884 (2013).* [<A HREF='http://dx.doi.org/10.1021/ja4048637'>DOI</A>]</TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333 TITLE='The mechanism of formation of hierarchical &quot;flake-ball&quot;-structured bismuth tungstate (BTO) particles was studied on the basis of structural analyses and was revealed to be growth of plate-like BTO crystallites on the tungsten oxide/BTO-modified surface of bismuth hydroxide particles by supplying tungsten and bismuth from the outside and inside of the core particles, respectively.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ BTSTL・2015 (letter)　《8》 VISIBL_B［published online 2015/10/15］</FONT><IMG SRC='/image/misc/oaLogo.png' HEIGHT=15 VARIGN=bottom> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD><B>Hori, H.</B>; <B>Takase, M.</B>*; <B>Amano, F.</B>; <B>Ohtani, B.</B>, Mechanism of the formation of hierarchical-structured bismuth tungstate photocatalyst particles through counter-flow supply of bismuth and tungsten sources, <I>Chem. Lett.</I>, <B>44</B>, 1723-1725 (2015).* [<A HREF='http://dx.doi.org/10.1246/cl.150893'>DOI</A>] ●これまで多数報告されてきたタングステン酸ビスマスフレークボール粒子が中空構造であることをあきらかにし，その生成機構を検討した速報．反応時間とともに形態が変化する詳細なメカニズムはフルペーパー（BTSTF）で報告．</TD></TR></TABLE></CENTER><CENTER><TABLE WIDTH=100% BORDER=1 CELLPADDING=3 CELLSPACING=0 BORDERCOLOR=#663333 TITLE='Modified titania photocatalyst powder samples were prepared using the sol-gel method for copper (Cu) and cerium (Ce) doping and impregnation for platinum (Pt) loading. Their bulk crystalline structures were investigated using X-ray diffractometry (XRD) with the Rietveld analysis. The surface/bulk structure, surface properties, and morphologies were observed using reversed double-beam photoacoustic spectroscopy (RDB-PAS), nitrogen adsorption, and scanning electron microscopy, respectively. The results from the XRD revealed that all samples were mainly anatase (ca. 80% or higher) with small amounts of rutile and non-crystalline components. The specific surface areas of all samples were in the range of 115-155 m2 g−1. Ce and Cu species were mainly distributed, while Pt was potentially loaded as a partially oxidized form on the titania surface. The results from the RDB-PAS indicated the changing of the energy-resolved distribution of electron traps (ERDT) from the original titania surface upon doping of the metals (Cu, Ce, and Pt), which altered their catalytic activities. The metals photocatalytic activities with UV irradiation were measured in two representative reactions; (a) CO2 evolution from acetic acid under the aerobic condition and (b) H2 evolution from deaerated aqueous methanol. In reaction (a), the Cu and/or Ce modification gave almost the same or slightly lower activity compared to the non-modified titania samples, while platinum loading yielded ca. 5-6 times higher activity. For reaction (b), the photocatalytic tests were divided into two sets; without (b1) and with (b2) Pt deposition during the reaction. Similar enhancements of activity from the Pt loading sample (and by Cu modification) were observed in reaction (b1) without in-situ platinum deposition, while the unmodified and Ce-doped samples were almost inactive. For the activities of reaction (b2) with in-situ platinum deposition, the unmodified samples showed the highest activity while the Cu-modified samples showed significantly lower activity.'><TR BGCOLOR=#663333><TD COLSPAN= VALIGN=middle popup_e> <SPAN CLASS=large><FONT COLOR=white><A NAME=''></A>■ PREEY・2019 (Article)　《7》 ETRAPD［received 2019/10/15］</FONT><IMG SRC='/image/misc/oaLogo.png' HEIGHT=15 VARIGN=bottom> </SPAN></TD></TR><TR><TD VALIGN=middle BGCOLOR=#FFFFDD><B>Unwiset, P.</B>; <B>Chen, G.</B>; <B>Ohtani, B.</B>; Chayakul Chanapattharapol, K.*, Correlation of the Photocatalytic Activities of Cu, Ce and/or Pt-Modified Titania Particles with their Bulk and Surface Structures Studied by Reversed Double-Beam Photoacoustic Spectroscopy, <I>Catalysts</I>, <B>9</B>, 1010 (2019).* [<A HREF='http://dx.doi.org/10.3390/catal9121010'>DOI</A>] ●銅，セリウムあるいは白金で表面を修飾した酸化チタンの逆二重励起光音響分光法による電子トラップ密度のエネルギー分布解析をふくむ各種の手法でのキャラクタリゼーションと光触媒活性に関するタイコンケーン大学との国際共同研究．</TD></TR></TABLE></CENTER>" )