检索结果-南通市图书馆

Cd3(C3N3S3)2 coordination polymer/graphene nanoarchitectures for enhanced photocatalytic H2O2 production under visible light

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2017年第9期62卷 610-618页

作者： Jie Xu Zhenye Chen Hongwen Zhang Guibin Lin Huaxiang Lin Xuxu Wang Jinlin Long State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350116China The Institute of Scientific and Industrial Research(sanken) Osaka UniversityOsaka 567-0047Japan

For a long time, there has been global concern over the environment and energy problems. Recently, the problems, which have brought about serious effect on the global living condition, have been in the ‘‘spotlight" and given impetus to the universal's efforts to head for the same direction: stem the worst warming and strive for the renewable energy source. Hydrogen peroxide(H_2O_2) is undoubtedly a good choice,which holds the promise as a clean, efficient, safe and transferrable energy carrier. Octahedral coordination polymer, Cd_3(C_3N_3S_3)_2, was found to be a robust photocatalyst for H_2O_2 generation under visible light irradiation. To further improve the H_2O_2 generation efficiency, adhering the octahedron to reduced graphene(rGO) was applied as the strategy herein. The study shows that by adhering Cd_3(C_3N_3S_3)_2to rGO, the formation of H_2O_2 is 2.5-fold enhanced and its deformation is concurrently suppressed. This work not only demonstrates the effectiveness of adhering Cd_3(C_3N_3S_3)_2polymer to rGO for the improvement of the polymer's photocatalytic performance, but also proposes a general way for the fabrication of graphene/coordination compound hybrids for maximizing their synergy.

关键词： Photocatalysis Coordination polymer rGO Cd3(C3N3S3)2 H2O2 generation

Fabrication of a TiO2-P25/（TiO2-P25+TiO2 nanotubes） junction for dye sensitized solar cells

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2016年第4期26卷 375-379页

作者： Nguyen Huy Hao Gobinda Gyawali Tohru Sekino Soo Wohn Lee Research Center for Eco-multifunctional Nano Materials Sun Moon University The Institute of Scientific and Industrial Research (ISIR-sanken) Osaka University Department of Environmental and Bio-chemical Engineering Sun Moon University

The dye sensitized solar cell（DSSC）, which converts solar light into electric energy, is expected to be a promising renewable energy source for today's world. In this work, dye sensitized solar cells, one containing a single layer and one containing a double layer, were fabricated. In the double layer DSSC structure, the under-layer was TiO2-P25 film, and the top layer consisted of a mixture of TiO2-P25 and TiO2nanotubes. The results indicated that the efficiency of the DSSC with the double layer structure was a significant improvement in comparison to the DSSC consisting of only a single film layer. The addition of TiO2-P25 in the top layer caused an improvement in the adsorption of dye molecules on the film rather than on the TiO2nanotubes only. The presence of the TiO2nanotubes together with TiO2-P25 in the top layer revealed the enhancement in harvesting the incident light and an improvement of electron transport through the film.

关键词： TiO2 nanotube Hydrothermal method DSSC Efficiency Double layer

Electro-optic 3D snapshot of a laser wakefield accelerated kilo-ampere electron bunch

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第5期13卷 823-834页

作者： Kai Huang Zhan Jin Nobuhiko Nakanii Tomonao Hosokai Masaki Kando Kansai Institute for Photon Science(KPSI) National Institutes for Quantum Science and Technology(QST)KyotoJapan. Laser Accelerator R&D Innovative Light Sources DivisionRIKEN SPring-8 CenterHyogoJapan. sanken Osaka UniversityOsakaJapan

Laser wakefield acceleration,as an advanced accelerator concept,has attracted great attentions for its ultrahigh acceleration gradient and the capability to produce high brightness electron *** three-dimensional(3D)density serves as an evaluation metric for the particle bunch quality and is intrinsically related to the applications of an *** its significance,this parameter has not been experimentally measured in the investigation of laser wakefield *** report on an electro-optic 3D snapshot of a laser wakefield electron bunch at a position outside the *** 3D shape of the electron bunch was detected by simultaneously performing optical transition radiation imaging and electro-optic *** 3D structures to a few micrometer levels were reconstructed using a genetic *** electron bunch possessed a transverse size of less than 30 *** current profile shows a multi-peak *** main peak had a duration of1 *** maximum electron 3D number density was~9×10^(21)m^(-3).This research demonstrates a feasible way of 3D density monitoring on femtosecond kilo-ampere electron bunches,at any position of a beam transport line for relevant applications.

关键词： laser acceleration field

Dication-accelerated anion transport inside micropores for the rapid decontamination of pertechnetate

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2022年第4期33卷 19-32页

作者： Peng Zhang Yi-Zhi Chen Han-Qin Weng Zi-Fang Guo Jia-Liang Chen Xing Zhao Guo-An Ye Ming-Zhang Lin School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China Department of Beam Material Science SANKENThe Institute of Scientific and Industrial ResearchOsaka University8-1 MihogaokaIbarakiOsaka 567-0047Japan Radiochemistry Department of China Institute of Atomic Energy China Institute of Atomic EnergyBeijing 102413China

Over 70%of the treated contaminated water at the Fukushima Daiichi Nuclear Power Station contains radionuclides beyond the regulatory standard for discharge that need to be ***-99(^(99)Tc),mainly in the form of pertechnetate Tc(VII)O_(4)^(-),is one of the main sources of long-term radiotoxicity that jeopardizes the environment and human ***,we used a series of dicationic pyridinium(DCP)derivative groups(–Py^(+)C_(n)H_(2n)N^(+)Me_(3),n=2,3,and 5)to modify commercial Reillex 425 resins containing tertiary pyridyl groups to improve the adsorption performance of rhenium(Re,an analog of radioactive Tc)and *** the quaternary pyridinium and ammonium sites in one DCP group can adsorb ReO_(4)^(-) simultaneously,DCP-modified Reillex 425(Reillex-Cn)exhibited high maximum adsorption capacities for Re under neutral *** capacities reached 344.8,416.7,and 588.2 mg g^(-)1 for Reillex 425-C2,Reillex 425-C3,and Reillex 425-C5,*** diffusion of ReO_(4)^(-)/TcO_(4)^(-) in Reillex 425-Cn was verified to be the rate-limiting step of ***,adsorption can be adjusted by the length of the alkyl spacers between the two positively charged N sites in DCP.–Py^(+)C_(2)H_(4)N^(+)Me_(3) significantly enhanced intraparticle diffusion compared to–Py^(+)C_(5)H_(10)N^(+)Me_(3).The two positive sites in–Py^(+)C_(2)H_(4)N^(+)Me_(3) would be laterally distributed,leading to a smaller steric hindrance for ReO_(4)–/TcO_(4)^(-) transport inside the microporous ***,the longer alkyl spacers in–Py^(+)C_(5)H_(10)N^(+)Me_(3) formed hydrophobic microphases,repulsing the hydrated ReO_(4)–/TcO_(4)^(-) ***,the adsorptions of both ReO_(4)^(-) and TcO_(4)^(-) on Reillex 425-C2 were faster than those on Reillex ***,Reillex 425-Cn exhibited an exothermic nature,good selectivity,excellent reusability,and strong salinity *** study provides a simple strategy to enhance the Tc removal performance

关键词： Quaternary pyridinium Dicationic pyridyl derivatives Pertechnetate Intraparticle diffusion

Supersonic gas jet stabilization in laser–plasma acceleration

在线全文

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2023年第6期11卷 256-263页

作者： Zhen-Zhe Lei Yan-Jun Gu Zhan Jin Shingo Sato Alexei Zhidkov Alexandre Rondepierre Kai Huang Nobuhiko Nakanii Izuru Daito Masakai Kando Tomonao Hosokai sanken(Institute of Scientific and Industrial Research) Osaka UniversityIbarakiOsakaJapan Kansai Institute for Photon Science(KPSI) National Institutes for Quantum Science and Technology(QST)Kizugawa-cityKyotoJapan RIKEN SPring-8 Center SayoHyogoJapan

Supersonic gas jets generated via a conical nozzle are widely applied in the laser wakefield acceleration of *** stability of the gas jet is critical to the electron injection and the reproducibility of the wakefield *** we discussed the role of the stilling chamber in a modified converging-diverging nozzle to dissipate the turbulence and to stabilize the gas *** the fluid dynamics simulations and the Mach-Zehnder interferometer measurements,the instability originating from the nonlinear turbulence is studied and the mechanism to suppress the instability is *** the numerical and experimental results prove that the carefully designed nozzle with a stilling chamber is able to reduce the perturbation by more than 10% compared with a simple-conical nozzle.

关键词： shock injection hydrodynamic stability laser wakefield acceleration laser-plasma interaction

Change in elastic properties during room-temperature aging in body-centered cubic Mg-Li and Mg-Li-Al single crystals

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2022年第14期109卷 49-53页

作者： Ruxia Liu Shota Higashino Koji Hagihara Lianmeng Zhang Tohru Sekino Masakazu Tane sanken(The Institute of Scientific and Industrial Research) Osaka University8-1 MihogaokaIbarakiOsaka 567-0047Japan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China Graduate School of Engineering Osaka City University3-3-138 SugimotoOsaka558-8585Japan Department of Physical Science and Engineering Nagoya Institute of TechnologyNagoya 466-8555Japan

Biodegradable materials,with many advantages over conventionally used non-biodegradable materials,have received much attention owing to the elimination of the need for a secondary surgery for the removal of implants after *** with other biodegradable ceramics and/or polymers,Mg alloys are considered to be the most promising biodegradable orthopedic materials because they feature not only high specific strength and compressive yield strength but also a low Young’s modulus,which is comparable to that of human bones(10-30 GPa)[1,2].

关键词： strength aging alloys

Effects of Bi-dopant and co-catalysts upon hole surface trapping on La_(2)Ti_(2)O_(7) nanosheet photocatalysts in overall solar water splitting

在线全文

学校读者我要写书评

暂无评论

Nano Research 2022年第1期15卷 438-445页

作者： Xiaoyan Cai Liang Mao Mamoru Fujitsuka Tetsuro Majima Sujan Kasani Nianqiang Wu Junying Zhang School of Materials Science and Physics Jiangsu Province Engineering Laboratory of High Efficient Energy Storage Technology and EquipmentChina University of Mining and TechnologyXuzhou 221116China School of Physics Beihang UniversityBeijing 100191China The Institute of Scientific and Industrial Research(sanken) Osaka UniversityMihogaoka 8-1IbarakiOsaka 567-0047Japan Department of Mechanical and Aerospace Engineering West Virginia UniversityMorgantownWV 26506-6106USA Department of Chemical Engineering University of Massachusetts AmherstAmherstMA 01003-9303USA

Pristine and Bi-doped lanthanum titanium oxide(La_(2)Ti_(2)O_(7))nanosheets have been synthesized as photocatalysts for overall solar water *** surface hole trap is a critical factor that limits the photocatalytic activity of pristine La_(2)Ti_(2)O_(7)-Deposition of cobalt phosphate(Co-Pi)and platinum(Pt)nanoparticles on La_(2)Ti_(2)O_(7) cannot remove the surface traps although they are essential for enabling the oxygen and hydrogen evolution *** is interesting that doping bismuth(Bi)into La_(2)Ti_(2)O_(7) nanosheets has eliminated the surface traps due to surface enrichment of *** Co-Pi/Bi-La_(2)Ti_(2)O_(7)/Pt nanosheets exhibit increasing photocatalytic activity toward overall water splitting with increasing the Bi-dopant level up to 5 at.%.Further increasing the Bi-dopant level leads to the formation of localized states above the valence band,leading to the lifetime reduction of photogenerated charge-carriers,and jeopardizing the photocatalytic *** work proposes an effective strategy to address the surface trapping and surface catalysis issues in the nanostructured metal oxide photocatalysts.

关键词： photocatalyst water splitting surface trap co-catalyst solar fuel

Designed fabrication of active tumor targeting covalent organic framework nanotherapeutics via a simple post-synthetic strategy

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2023年第5期16卷 7085-7094页

作者： Yue Yu Guoxin Zhang Zhongping Li Jia Wang Yang Liu Rahul Bhardwaj Renu Wadhwa Yuki Nagao Mototada Shichiri Ran Gao Biomedical Research Institute National Institute of Advanced Industrial Science and Technology(AIST)Osaka 563-8577Japan AIST-INDIA DAILAB DBT-AIST International Center for Translational&Environmental Research(DAICENTER)AISTTsukubaIbaraki 305-8565Japan Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases NHC Key Laboratory of Human Disease Comparative MedicineNational Human Diseases Animal Model Resource CenterInstitute of Laboratory Animal ScienceChinese Academy of Medical Sciences(CAMS)&Peking Union Medical CollageBeijing 100021China School of Materials Science Japan Advanced Institute of Science and TechnologyIshikawa 923-1211Japan Department of Chemical and Biomolecular Engineering Yonsei University50 Yonsei-roSeodaemun-guSeoul 120-749Republic of Korea Flexible 3D System Integration Laboratory SANKENOsaka UniversityOsaka 567-0047Japan

Developing agents that can accurately differentiate tumors from normal healthy tissues is of utmost importance for safe cancer *** targeting has been considered as an effective technique for tumor *** this work,we demonstrate a folate-functionalized nanoscale covalent organic framework(FATD nCOF)highly specific to cancer cells through active targeting of their enriched folate receptors(FRs).The FATD nCOF prepared by simple post-synthetic modification of the COF surface defeats disperses well in water and exhibits a high loading capacity for various anticancer *** biocompatible FATD nCOF is selectively internalized by FR-harboring cancer cells and consequently augments the efficacy of the loaded drug,Withaferin A(Wi-A),for targeted cancer cell *** biomolecular mechanism studies,Wi-A-loaded FATD(FATD@Wi-A)nanocomposites show remarkably a higher rate of apoptosis in FR-enriched cancer *** analyses of FR-positive and FR-negative tumor xenografts reveal enhanced selective antitumor activity of FATD@Wi-A *** together,the study findings suggest that FATD nCOF holds great promise for active targeting of tumors in *** simple yet effective technology might be valuable for creating new state-of-the-art COFs for chemical and biomedical applications.

关键词： covalent organic framework active targeting folate receptor drug delivery cancer therapy

Generation of polarized electron beams through self-injection in the interaction of a laser with a pre-polarized plasma

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2024年第3期12卷 62-68页

作者： L.R.Yin X.F.Li Y.J.Gu N.Cao Q.Kong M.Büscher S.M.Weng M.Chen Z.M.Sheng Key Laboratory of Nuclear Physics and Ion-beam Application(MoE) Institute of Modern PhysicsDepartment of Nuclear Science and TechnologyFudan UniversityShanghaiChina State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghaiChina sanken(Institute of Scientific and Industrial Research) Osaka UniversityOsakaJapan Sichuan Research Institute Shanghai Jiao Tong UniversityChengduChina Peter Grünberg Institut(PGI-6) Forschungszentrum JülichJülichGermany Institut für Laser-und Plasmaphysik Heinrich-Heine-Universität DüsseldorfDüsseldorfGermany Key Laboratory for Laser Plasmas(MoE) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghaiChina Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghaiChina Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghaiChina

Polarized electron beam production via laser wakefield acceleration in pre-polarized plasma is investigated by particlein-cell *** evolution of the electron beam polarization is studied based on the Thomas±Bargmann±Michel±Telegdi equation for the transverse and longitudinal self-injection,and the depolarization process is found to be influenced by the injection *** the case of transverse self-injection,as found typically in the bubble regime,the spin precession of the accelerated electrons is mainly influenced by the ***,in the case of longitudinal injection in the quasi-1D regime(for example,*** et al.,***.110,135002(2013)),the direction of electron spin oscillates in the laser *** the electrons move around the laser axis,the net influence of the laser field is nearly zero and the contribution of the wakefield can be ***,an ultra-short electron beam with polarization of 99%can be obtained using longitudinal self-injection.

关键词： laser wakefield acceleration longitudinal self-injection particle-in-cell simulation polarized electron beam