Showing papers by "Nanjing Tech University published in 2009"
TL;DR: In this paper, the effect of nonevaporable water on the strength variation of geopolymers was firstly analyzed and it was shown that it is necessary to keep the strength stable and the optimum content was about 7.4%.
476 citations
TL;DR: It was indicated that the collected liquid in the second condenser with HZSM-5 had high qualities and might be used as transport oil.
429 citations
398 citations
TL;DR: In this article, a review of the current research activities on BSCF-based cathodes for intermediate-temperature (IT)-SOFCs is presented and analyzed to provide some guidelines in the search for the new generation of cathode materials for IT-SOFC.
398 citations
TL;DR: A site cation-ordered PrBaCo2O5+δ (PrBC) double perovskite oxide was synthesized and evaluated as the cathode of an intermediate-temperature solid-oxide fuel cell (IT-SOFC) on a samarium-doped ceria (SDC) electrolyte as mentioned in this paper.
320 citations
TL;DR: In this article, the effects of alkali concentration, modulus of the alkali silicate solution and reaction temperature on geopolymerization were studied systematically by isothermal calorimetry, as well as X-ray diffraction and 27Al/29Si MAS NMR results show that the geopolymersization process of metakaolinite under alkali activation condition can be reasonably supposed into three stages: (I) destruction, (II) polymerization and (III) stabilization.
297 citations
TL;DR: Gold nanoparticles strongly absorb both visible light and ultraviolet light to drive an oxidation reaction for a synthetic dye, as well as phenol degradation and selective oxidation of benzyl alcohol under UV light.
270 citations
TL;DR: The study indicated that the Tf-coupled PEG liposomes (Tf-SL) could be as the targeted carriers to facilitate the delivery of the encapsulated anticancer drugs into tumor cells by receptor-mediated way.
247 citations
TL;DR: Microcapsule curcumin remains in antibacterial and antifungal activities after microencapsulation, which can be potential colorant and preservative in food industry.
242 citations
TL;DR: In this article, the relationship between the Zr doping content and structure, chemical stability, carbon dioxide resistivity, sinterability and electrochemical properties of BaZryCe0.2O3−δ (BZCYy), 0.8−yY0.0 and 0.4, are studied systemically using XRD, CO2-TPD, SEM, EIS and I-V polarization characterizations.
236 citations
TL;DR: The data indicated that the addition of polylactic acid can make homogeneous composites scaffold resist significantly higher stress and improve the elastic modulus of the composites, which can make them more beneficial for surgical applications.
TL;DR: In this article, the development of hydrogen storage alloys prepared by an effective method of mechanical alloying and milling is discussed, emphasizing alloys based on Mg or that contain Mg due to their low cost and high hydrogen storage capacity.
TL;DR: The results show that the pretreated materials can be used as good feedstocks for bioethanol production, and that the phosphoric acid-acetone pretreatment can effectively yield a higher ethanol concentration.
TL;DR: A straight forward method for immobilizing Pt-Co alloyed nanoparticles onto nitrogen-doped CNx nanotubes is presented and the as-prepared electrocatalysts exhibit good performance for oxygen reduction reaction in acidic medium.
Abstract: A straight forward method for immobilizing Pt-Co alloyed nanoparticles onto nitrogen-doped CNx nanotubes is presented. The as-prepared electrocatalysts exhibit good performance for oxygen reduction reaction in acidic medium arising from the high-dispersion and alloying effect of the Pt-Co nanoparticles and the intrinsic catalytic capacity of the CNx nanotubes.
TL;DR: In this paper, polyurea microcapsules containing phase change materials were prepared using interfacial polycondensation method and the results show that the microPCMs were synthesized successfully and that, the phase change temperature was about 29°C, the latent heat of fusion was about 80 ǫg −1, the particle diameter was 20-35μm.
TL;DR: It can be concluded that sodium silicate obstructs ultrasound oily sludge deoiling and clearly establishes that 28 kHz ultrasound is superior to 40 kHz ultrasound.
TL;DR: In this article, a perovskite-type La 0.8 Sr 0.2 Cr 0.5 O 3 (LSCM) oxide was synthesized and evaluated as the electrode material of a symmetric solid-oxide fuel cell.
TL;DR: In this article, the effects of reaction temperature and the interactions between CeO2 and Al2O3 on the performance of NO selective catalytic reduction with ammonia were studied, and it was shown that the catalyst containing 9 wt% Al 2 O3 and 13 wt % CeO 2 has the highest activity in the temperature range 250-350 °C at a space velocity of 3000 h−1.
TL;DR: A regulation strategy was proposed which reinforced acetyl-CoA and NADPH supply at a specific fermentation stage and showed an apparent increase of 35% in DHA content and total lipid content.
Abstract: Docosahexaenoic acid (DHA) production in Schizochytrium sp. HX-308 was evaluated by detecting enzymatic activities of ATP:citrate lyase (EC 4.1.3.8), malic enzyme (EC 1.1.1.40) and glucose-6-phosphate dehydrogenase (EC 1.1.1.49) at different fermentation stages. According to the analysis, a regulation strategy was proposed which reinforced acetyl-CoA and NADPH supply at a specific fermentation stage. DHA content of total fatty acids was increased from 35 to 60% by the addition of 4 g/L malic acid at the rapid lipid accumulation stage. Total lipid content also showed an apparent increase of 35% and reached 19 g/L when 40 mL ethanol/L was added at the late lipid accumulation stage.
TL;DR: In this paper, the influence of polypropylene (PP) fiber on the mechanical properties and volume stability of geopolymers was investigated, and the results of scanning electron microscopy (SEM) and the appearances of crack growths confirm that PP fiber can offer a bridging effect over the harmful pores and defects and change the expanding ways of cracks.
Abstract: To improve the environmental benefits and solve the problems of large shrinkage and high brittleness, the partial replacement of calcined kaolin by fly ash as a raw material for geopolymer synthesis and the influences of polypropylene (PP) fiber on the mechanical properties and volume stability were investigated. The results show that compressive strength of the geopolymer containing 33.3%(mass fraction) fly ash by steam curing at 80 °C for 6 d is improved by 35.5%. The 3-day compressive strength, flexural strength and impacting energy of geopolymers containing 0.05%PP fiber increase by 67.8%, 36.1% and 6.25%, while the shrinkage and modulus of compressibility decrease by 38.6% and 31.3%, respectively. The results of scanning electron microscopy (SEM) and the appearances of crack growths confirm that PP fiber can offer a bridging effect over the harmful pores and defects and change the expanding ways of cracks, resulting in a great improvement of strength and toughness.
TL;DR: A two-stage agitation speed control strategy, aimed at achieving high concentration, high yield and high productivity of 2,3-butanediol, was proposed.
TL;DR: It is shown that simple BCP-templated galvanic displacement reactions yield dense arrays of mushroom-shaped gold nanopillars with a period of 50 nm, characterized by high SERS efficiencies.
Abstract: Up to now, little effort has been made to exploit large-area high-throughput patterning by block copolymer (BCP) lithography to generate nanostructured substrates with periods well below 100 nm for surface-enhanced Raman scattering (SERS). We show that simple BCP-templated galvanic displacement reactions yield dense arrays of mushroom-shaped gold nanopillars with a period of 50 nm. The nanoporous BCP films used as templates were obtained by swelling-induced reconstruction of reverse micelle monolayers deposited on silicon wafers. Coupling of adjacent mushroom caps almost impinging on each other combined with their strong local curvature results in a high spatial density of hot spots in the narrow gaps between them. Thus, substrates characterized by high SERS efficiencies are obtained.
TL;DR: In this paper, a simple glycine-nitrate auto-combustion by applying aqueous medium and constricting the reactions in the pores of cellulose fibers was used to synthesize spinel LiTiO.
TL;DR: In this paper, an intermediate-temperature solid oxide fuel cell (IT-SOFC) was investigated using carbon as the fuel for an anode-supported SOFC with scandium-stabilized zirconia electrolyte and a La 0.8 Sr 0.2 MnO 3 cathode by applying a catalystloaded, activated carbon as fuel.
TL;DR: In this article, a new type of composite adsorbents was synthesized by incorporating monoethanol amine (MEA) into β-zeolite, and the results showed that the structure of zeolite was well preserved after MEA modification.
TL;DR: In this article, a cost-effective electrodeposition route for preparation of highly oriented and well-defined ZnO nano/micro-scale structures on indium tin oxide (ITO) glass substrates without a traditionally pre-prepared layer of znO seeds was introduced.
TL;DR: LiFePO 4 /C composite was synthesized by mechanical activation using sucrose as carbon source as mentioned in this paper, and the product showed a capacity of 174µm/g at 0.1C rate and around 117µg at 20C rate with the capacity fade less than 10% after 50 cycles.
TL;DR: The results suggest that chemisorption processes could be the rate-limiting steps in the process of Hg(2+) adsorption.
TL;DR: Simulation results indicate that the preferential orientation of water molecules in coordination shells of these two cations presents an anomalous change in the CNTs and causes a diameter-dependent variation for the interaction energy between the cation and water molecule in its coordination shell.
Abstract: We performed molecular dynamics simulations of the hydration of Na+ and K+ in infinitely long single-walled armchair carbon nanotubes (CNTs) at 298 K. Simulation results indicate that the preferential orientation of water molecules in coordination shells of these two cations presents an anomalous change in the CNTs and causes a diameter-dependent variation for the interaction energy between the cation and water molecules in its coordination shell. In the five CNTs of this work, it is energetically favorable for confining a hydrated K+ inside the two narrow CNTs with diameters of 0.60 and 0.73 nm, whereas the situation is reverse inside the wide CNTs with diameters of 0.87, 1.0, and 1.28 nm. This finding is important for CNT applications in ionic systems that control the selectivity and the ionic flow.
TL;DR: Response surface methodology was employed to optimize medium composition for the production of cyclic adenosine 3',5'-monophosphate (cAMP) with Microbacterium sp.