CAS Shanghai Institute of Ceramics | Date: 2015-03-18
The present invention relates to a surface modification method for a polyether-ether-ketone material. The method combines physical and chemical methods, and comprises the steps of performing plasma immersion ion implantation on the surface of the polyether-ether-ketone material with argon as an ion source, and then, soaking the polyether-ether-ketone material treated by plasma immersion ion implantation in a hydrogen peroxide aqueous solution, hydrofluoric acid aqueous solution, or ammonia water to make the surface of the modified polyether-ether-ketone material have nanoparticles, shallow nanoporous structures, and/or ravined nanostructures.
CAS Shanghai Institute of Ceramics | Date: 2014-07-25
A high temperature fixture, said fixture comprising: at least three noble metal electrodes, arranged in parallel, among which two adjacent noble metal electrodes are used for clamping a test sample; noble metal wires connected to the noble metal electrodes at one end, and to a test device at the other end for transmitting test signals generated by the test sample to the test device through the noble metal electrodes; and a thermocouple for measuring the temperature of the test materials.
CAS Shanghai Institute of Ceramics | Date: 2017-05-31
A high temperature fixture, said fixture comprising: at least three noble metal electrodes (11, 12, 13) arranged in parallel, among which two adjacent noble metal electrodes (11, 12 13) are used for clamping a test sample; noble metal wires (1, 2, 5) connected to the noble metal electrodes (11, 12, 13) at one end, and to a test device at the other end for transmitting test signals generated by the test sample to the test device through the noble metal electrodes (11, 12, 13); and a thermocouple for measuring the temperature of the test materials.
Zhu Y.-J.,CAS Shanghai Institute of Ceramics |
Chen F.,CAS Shanghai Institute of Ceramics
Chemical Reviews | Year: 2014
Microwaves are the electromagnetic waves with frequencies ranging from 0.3 to 300 GHz and with wavelengths of between 1 mm and 1 m, which are between infrared and radio frequency waves in the electromagnetic spectrum. The commonly used frequency in laboratories and homes for microwave heating is 2.45 GHz. Nowadays, more laboratories of materials science as well as organic and pharmaceutical chemical laboratories have been equipped with microwave reactors. Many early publications on microwave-assisted synthesis were carried out in household microwave ovens, and experimental parameters like microwave power, reaction temperature, and pressure inside the vessel were not precisely known in household microwave ovens. These uncertainties led to poor control over the synthesis and a lack of reproducibility of experiments.
Li Y.,East China University of Science and Technology |
Shi J.,East China University of Science and Technology |
Shi J.,CAS Shanghai Institute of Ceramics
Advanced Materials | Year: 2014
Hollow-structured mesoporous materials (HMMs), as a kind of mesoporous material with unique morphology, have been of great interest in the past decade because of the subtle combination of the hollow architecture with the mesoporous nanostructure. Benefitting from the merits of low density, large void space, large specific surface area, and, especially, the good biocompatibility, HMMs present promising application prospects in various fields, such as adsorption and storage, confined catalysis when catalytically active species are incorporated in the core and/or shell, controlled drug release, targeted drug delivery, and simultaneous diagnosis and therapy of cancers when the surface and/or core of the HMMs are functionalized with functional ligands and/or nanoparticles, and so on. In this review, recent progress in the design, synthesis, functionalization, and applications of hollow mesoporous materials are discussed. Two main synthetic strategies, soft-templating and hard-templating routes, are broadly sorted and described in detail. Progress in the main application aspects of HMMs, such as adsorption and storage, catalysis, and biomedicine, are also discussed in detail in this article, in terms of the unique features of the combined large void space in the core and the mesoporous network in the shell. Functionalization of the core and pore/outer surfaces with functional organic groups and/or nanoparticles, and their performance, are summarized in this article. Finally, an outlook of their prospects and challenges in terms of their controlled synthesis and scaled application is presented. Hollow-structured mesoporous materials (HMMs), a type of mesoporous material with a unique morphology, present promising application prospects in the fields of storage, adsorption and separation, confined catalysis, controlled drug release, and simultaneous diagnosis and therapy of cancers, owing to the subtle combination of the hollow architecture with the mesoporous nanostructure. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Shi J.,CAS Shanghai Institute of Ceramics |
Shi J.,East China University of Science and Technology |
Shi J.,CAS Institute of Process Engineering
Chemical Reviews | Year: 2013
The heterogeneous catalytic performance is largely dependent on the catalyst nanostructures or, in another word, processing technologies, in addition to the intrinsic physical and chemical properties of the constitutive components. Compared to the amorphous framework of mesoporous silica, mesoporous metal oxides synthesized by a hard templatereplicating method usually have a crystallized structure and exhibit excellent catalytic activities, as reported in many documents. The loading or dispersion of catalytically active guest species into the host mesopore network results in mesostructured composites of a crystallized framework and highly dispersed catalytic species in its mesopore network. Mesoporous inorganic oxide materials, in the form of either powder or thin film, with high surface areas, ordered pore structures, finely tunable pore sizes, and flexible wallcompositions have been investigated widely of their chemical synthesis and potential applications in catalysis, adsorption, chemical sensing, electrochemistry, biomedical areas, and so on.
CAS Shanghai Institute of Ceramics | Date: 2016-08-31
A titanium oxide-based supercapacitor electrode material and a method of manufacturing same. A reactive substance of the titanium oxide-based supercapacitor electrode material is a conductive titanium oxide. The conductive titanium oxide is a sub-stoichiometric titanium oxide, reduced titanium dioxide, or doped reduced titanium dioxide obtained by further doping an element in reduced titanium dioxide. The titanium oxide-based supercapacitor electrode material has a carrier concentration greater than 10^(18) cm^(-3), and the titanium oxide-based supercapacitor electrode material has a specific capacitance 20 F/g to 1,740 F/g at a charge/discharge current of 1 A/g.
CAS Shanghai Institute of Ceramics | Date: 2016-03-10
A low temperature co-fired ceramic powder has a chemical composition of xR_(2)O-yRO-zM_(2)O_(3)-wMO_(2), wherein R is Li, Na and/or K, R is Mg, Ca, Sr, Ba, Zn and/or Cu, M is B, Al, Ga, In, Bi, Nd, Sm, and/or La, M is Si, Ge, Sn, Ti, and/or Zr, x0, y0, z20%, w15%, and x+y+z+w=1. The preparation method comprises: weighing constituent powders according to the composition of the ceramic powder, and uniformly mixing these powders as a raw material powder; and presintering the raw material powder in a muffle furnace followed by grinding, the presintering comprising gradiently heating the raw material powder to a maximum temperature of 950 C. by first rising to 350-450 C. and staying thereat for a period, then staying at intervals of 50-100 C. for a period.
CAS Shanghai Institute of Ceramics | Date: 2016-04-13
The present invention relates to a P-type high-performance thermoelectric material featuring reversible phase change, and a preparation method therefor. The thermoelectric material has a chemical composition of Cu_(2)Se_(1-x)I_(x), wherein 0 < x 0.08. The method comprises: weighing elemental copper metal, elemental selenium metal, and cuprous iodide according to the molar ratio (2-x):(1-x):x, and packaging them in a vacuum; raising the temperature to 1150-1170 C in stages and performing a melting treatment for 12-24 hours; lowering the temperature to 600-700 C in stages and then performing an annealing treatment for 5-7 days, the substances being cooled to room temperature in a furnace after the annealing treatment; and performing pressure sintering at 400-500 C.
CAS Shanghai Institute of Ceramics | Date: 2015-04-27
The present invention relates to a hydrothermal method for preparing a doped vanadium dioxide powder, the doped powder having a chemical composition of V_(1-X)M_(X)O_(2), 0