|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Light-controlled synthesis of uniform platinum nano- dendrites with markedly enhanced electrocatalytic activity显示文摘我们报导一在基于锌(II ) 播种途径的 situ 快在白轻照耀下面的卟啉(ZnP ) ,与悦耳的尺寸导致一致的球形的铂 nanodendrites。铂 nanodendrites 展览显著地与商业铂黑色相比向氧减小反应(ORR ) 和甲醇氧化反应(粗腐殖质) 改进了 electrocatalytic 活动。 | Weifeng Si Jia Li Huanqiao Li Shushuang Li Jie Yin Huan Xu Xinwen Guo Tao, Zhang Yujiang Song | 2013 | Nano Research2013，6，10： | 7 |
| 2 | A Novel Model of Predicting Archie's Cementation Factor from Nuclear Magnetic Resonance(NMR) Logs in Low Permeability Reservoirs显示文摘The resistivity experimental measurements of core samples drilled from low permeability reservoirs of Ordos Basin,Northwest China,illustrate that the cementation factors are not agminate,but vary from 1.335 to 1.749.This leads to a challenge for the estimation of water and hydrocarbon saturation.Based on the analysis of Purcell equation and assumption that rock resistivity is determined by the parallel connection of numerous capillary resistances,a theoretical expression of cementation factor in terms of porosity and permeability is established.Then,cementation factor can be calculated if the parameters of porosity and permeability are determined.In the field application,porosity can be easily obtained by conventional logs.However,it is a tough challenge to estimate permeability due to the strong heterogeneity of low permeability reservoirs.Thus,the Schlumberger Doll Research(SDR)model derived from NMR logs has been proposed to estimate permeability.Based on the analysis of the theoretical expressions of cementation factor and SDR model,a novel cementation factor prediction model,which is relevant to porosity and logarithmic mean of NMR T2spectrum(T2lm),is derived.The advantage of this model is that all the input information can be acquired from NMR logs accurately.In order to confirm the credibility of the novel model,the resistivity and corresponding laboratory NMR measurements of 27 core samples are conducted.The credibility of the model is confirmed by comparing the predicted cementation factors with the core analyzed results.The absolute errors for all core samples are lower than 0.071.Once this model is extended to field application,the accuracy of water and hydrocarbon saturation estimation will be significantly improved. | Liang Wang Zhiqiang Mao Yujiang Shi Qin'e Tao Yumei Cheng Yong Song | 2014 | Journal of Earth Science2014，25，1： | 4 |
| 3 | Facile synthesis and electrochemical properties of MnO_2/carbon nanotubes显示文摘The poor electrical conductivity of MnO_2 limits its use as an electrode material.To overcome this limitation,we report an easy and rapid approach to deposit nanosized MnO_2 onto multi-wall carbon nanotubes functionalized with hydroxyl groups(MWCNTs-OH) by chemical reduction of KMnO_4 with MnSO_4 in aqueous solution under ambient conditions.Characterization with XRD and TEM reveals that the obtained MnO_2/MWCNTs-OH composite is nanocrystalline and partially covered by MnO_2 nanosheets with a thickness of 1-3 nm at a MnO_2 loading of 20 wt%.Cyclic voltammetry(CV) and galvanostatic charge-discharge measurements reveal that the MnO_2/MWCNTs-OH composite with a MnO_2 loading of 20 wt% has a relatively high specific capacitance of 234 F/g at a scan rate of 2mV/s and exhibits good cycling stability.Furthermore,the oxygen reduction reaction(ORR) shows that MnO_2/MWCNTs-OH composite may have potential applications as a non-noble metal electrocatalyst in fuel cells and metal-air batteries. | Yang Lv Huanqiao Li Yan Xie Shushuang Li Jia Li Yongheng Xing Yujiang Song | 2014 | Particuology2014，12，4： | 2 |
| 4 | Incremental Unknowns Method for Solving Three-Dimensional Convection-Diffusion Equations显示文摘We use the incremental unknowns method in conjunction with the iterative methods to approximate the solution of the nonsymmetric and positive-definite linear systems generated from a multilevel discretization of three-dimensional convection-diffusion equations. The condition numbers of incremental unknowns matrices associated with the convection-diffusion equations and the number of iterations needed to attain an acceptable accuracy are estimated. Numerical results are presented with two-level approximations, which demonstrate that the incremental unknowns method when combined with some iter- ative methods is very effcient. | Lunji Song Yujiang Wu | 2007 | Numerical Mathematics A Journal of Chinese Universities(English Series)2007，16，1： | 1 |
| 5 | Highly Sen sitive temperature-independent strain sensor based on a long-period fiber grating with a CO2-1aser engraved ro tary structure显示文摘 | Zhu Tao Rao Yujiang Song Yun | 2009 | IEEE Photonics Technology Let- ters2009，21，8： | 1 |
| 6 | 3D printing of personalized polylactic acid scaffold laden with GelMA/autologous auricle cartilage to promote ear reconstruction显示文摘At present,the clinical reconstruction of the auricle usually adopts the strategy of taking autologous costal cartilage.This method has great trauma to patients,poor plasticity and inaccurate shaping.Three-dimensional(3D)printing technology has made a great breakthrough in the clinical application of orthopedic implants.This study explored the combination of 3D printing and tissue engineering to precisely reconstruct the auricle.First,a polylactic acid(PLA)polymer scaffold with a precisely customized patient appearance was fabricated,and then auricle cartilage fragments were loaded into the 3D-printed porous PLA scaffold to promote auricle reconstruction.In vitro,gelatin methacrylamide(GelMA)hydrogels loaded with different sizes of rabbit ear cartilage fragments were studied to assess the regenerative activity of various autologous cartilage fragments.In vivo,rat ear cartilage fragments were placed in an accurately designed porous PLA polymer ear scaffold to promote auricle reconstruction.The results indicated that the chondrocytes in the cartilage fragments could maintain the morphological phenotype in vitro.After three months of implantation observation,it was conducive to promoting the subsequent regeneration of cartilage in vivo.The autologous cartilage fragments combined with 3D printing technology show promising potential in auricle reconstruction. | Xingyu Gui Zhiyu Peng Ping Song Li Chen Xiujuan Xu Hairui Li Pei Tang Yixi Wang Zixuan Su Qingquan Kong Zhenyu Zhang Zhengyong Li Ying Cen Changchun Zhou Yujiang Fan Xingdong Zhang | 2023 | Bio-Design and Manufacturing2023，6，4： | 0 |
| 7 | Pyrolysis of Iron(Ⅲ)porphyrin coated Pt/C toward oxygen reduction reaction in acidic medium显示文摘Design and synthesis of highly active and durable electrocatalysts toward oxygen reduction reaction(ORR)is of particular importance for proton exchange membrane fuel cells(PEMFCs),yet remains a grand challenge.Herein,we report the deposition of iron(Ⅲ)porphyrin(Fe P)on house-made Pt/C by rotary evaporation of the mixture of Fe P and house-made Pt/C dispersed in chloroform,followed by pyrolysis at 650℃ in argon atmosphere.This approach led to the synthesis of new non-precious metal electrocatalyst(NPME)-Pt/C composites(Pt/C-Fe P)with an average nanoparticle diameter of 3.1±1.5 nm without aggregation.According to X-ray photoelectron spectroscopy(XPS),the binding energy of Pt 4f_(7/2) became larger due to the presence of pyrolyzed Fe P.In addition,the electrochemically active surface area(ECSA)of Pt/C-Fe P-650 is 65 m^(2)/g less than that of house-made Pt/C(80.2 m^(2)/g).This implies that the pyrolyzed Fe P may have partially covered the surface of Pt nanoparticles and thus lowering the ECSA.Interestingly,the mass activity(MA)of Pt/C-Fe P turns out to be 349.0 m A/mgPt@0.9 V vs.RHE,which is 2.6 times and 1.5 times of house-made Pt/C and commercial Pt/C,respectively.It is speculated that the electronic interaction and possible synergy between Pt and pyrolyzed Fe P as NPME might have contributed to the ORR activity improvement despite of partial loss of ECSA.During accelerated durability tests(ADTs),the MA of Pt/C-Fe P-650 degrades 64.3% inferior to commercial Pt/C(52.2%).The main reason likely arises from the degradation of pyrolyzed Fe P,which is a bottleneck problem confronting NPMEs. | Yang Lv Huiyuan Liu Jiaqi Qin Rui Gao Yunlong Zhang Yan Xie Jia Li Yujiang Song | 2020 | Progress in Natural Science:Materials International2020，30，6： | 0 |
| 8 | Carbonized Yolk-shell Metal-Organic Frameworks for Electrochemical Conversion of CO_(2) into Ethylene显示文摘With the excessive consumption of fossil fuels and the massive emission of CO_(2),it has led to a series of environmental crises posing a serious threat to sustainable development.Electrochemical CO_(2) reduction reaction( CO_(2)RR)to ethylene helps solve these serious environmental crises.Herein,we report the synthesis of a copper-based electrocatalyst by pyrolysis of yolk-shell structured HKUST-1 with partial substitution of trimesic acid by benzimidazole(nitrogen source).The electrocatalyst exhibits an ethylene Faradic efficiency(FE)of 25.8%and a partial ethylene current density of 23.7 mA/cm^(2),in addition,the electrocatalyst can maintain stable performance during 10 h of electrolysis,which are all better than those of the electrocatalyst without nitrogen dopant.According to electrochemical measurements and X-ray photoelectron spectroscopy(XPS),we propose that the nitrogen dopant plays an effective role in stabilizing Cu(I)species and promoting CO_(2) molecules activation,as well as suppressing the reduction of Cu(I)species during electrolysis.Eventually,the performance of the electrocatalyst toward CO_(2)RR is studied in a flow cell.This work provides a new route for the design of Cu-based electrocatalyst toward electrochemical CO_(2) conversion into ethylene. | WANG Renquan LI Tiantian GAO Rui QIN Jiaqi LI Mengyao GUO Yizheng SONG Yujiang | 2023 | Chemical Research in Chinese Universities2023，39，2： | 0 |
| 9 | Biomaterials and regulatory science显示文摘The fast development of both biomaterials and regulatory science calls for a convergence,which is addressed in this article via their link through medical products of biomaterials and related safety and efficacy evaluation.The updated definition of biomaterials,and concepts of biomaterials-related medical products and so-called medical-grade and implantable materials are firstly introduced.Then a brief overview of the concept and history of regulatory science and its assessment of safety and efficacy of medical products,as well as the currently ongoing biomaterials-related regulatory science programs are presented.Finally,the opportunities provided by regulatory science for biomaterials as well as challenges on how to develop a biomaterials-based regulatory science system are discussed.As the first article in the field to elucidate the relationship between biomaterials and regulatory science,key take-home messages include(1)biomaterials alone are not medical products;(2)regulatory authorities approve/clear final medical products,not biomaterials;(3)there is no definition/regulation on the so-called medical-grade or implantable materials;and(4)safety and efficacy refer to final medical products,not biomaterials alone. | Xu Song Zhonglan Tang Wenbo Liu Kuan Chen Jie Liang Bo Yuan Hai Lin Xiangdong Zhu Yujiang Fan Xinli Shi Peng Zhao Lei Yang Kai Zhang Antonios G.Mikos Xingdong Zhang | 2022 | Journal of Materials Science & Technology2022，，33： | 0 |
| 10 | Pt@h-BN core-shell fuel electrocatalysis confined cell electrocatalysts wit under outer shells显示文摘 | Mengmeng Sun Jinchao Dong Yang Lv Siqin Zhao Caixia Meng Yujiang Song Guoxiong Wang Jianfeng Li Qiang Fu Zhongqun Tian Xinhe Bao | 2018 | Nano Research2018，11，6： | 0 |
| 11 | Highly Active Electrocatalyst Derived from ZIF-8 Decorated with Iron(III) and Cobalt(III) Porphyrin Toward Efficient Oxygen Reduction in Both Alkaline and Acidic Media显示文摘Zeolite imidazole frameworks 8(ZIF-8)and modified ones after pyrolysis are highly promising toward oxygen reduction reaction(ORR).Especially,the compositional modification of ZIF-8 is crucial to the enhancement of ORR performance,yet limited to the substitution of skeletal Zn(II)with other cations or simple physical adsorption of cations.Herein,we report the decoration of ZIF-8 with ORR active hemin(FeP)and Co(III)protoporphyrin(CoP)via the coordination between the peripheral carboxylic group of FeP and CoP with skeletal Zn(II).This allows well control over the quantity of loaded FeP and CoP,critical to the synthesis of advanced electrocatalysts.Subsequent pyrolysis of FeP and CoP co-decorated ZIF-8 leads to highly active ORR electrocatalysts with a half-wave potential(E1/2)of 0.913 V(vs.RHE)in 0.1 mol/L KOH aq.and an E1/2 of 0.803 V(vs.RHE)in 0.1 mol/L HClO4 aq.Moreover,our electrocatalyst shows much more improved and comparable durability in alkaline and acidic media,respectively,during 3000 cycles of cyclic voltammetry(CV)scanning relative to commercial Pt/C. | ZHENG Ruonan ZHAI Zihui QIU Chenxi GAO Rui LV Yang SONG Yujiang | 2022 | Chemical Research in Chinese Universities2022，38，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员