Abstract: The utilization of industrial solid wastes as building materials has been thought of as the best
way to solve the problems caused by high waste production, high resource consumption and high
pollution that is inherent with the primary industries of China. However, due to the low level of usage by
previous technologies, these serious problems of the primary industries still persist. Hence, it is urgent to
seek an effective way to solve these problems. In this paper, based on the understanding of the theory of
simulation to formation of rock and the research advances of sialite technology, it is concluded that sialite
technology can achieve the effective usage of industrial solid wastes.
Abstract: Crystalline TiO2 thin films coated on silica glass fibers and nano-powders were prepared by
adding H3BO3 into an (NH4)2TiF6 solution supersaturated with anatase nano-crystalline TiO2 at 40°C.
The effect of the deposition conditions on the surface morphology, section morphology, growth patterns,
thicknesses of the deposited TiO2 thin films were investigated. Growth rate and particle size of the thin
films were controlled by the deposition conditions. As a result, a well-combined and durable TiO2 thin
films on silica glass fibers surface obtained under definite optimizing experimental conditions and
Abstract: In order to investigate the effects of doping boron on the self-cleaning properties of TiO2 thin
films, sol-gel method was employed to prepare TiO2 films with various amount of boron on the glass
substrates. Atomic Force Microscope (AFM) and X-ray diffraction (XRD) were carried out to investigate
the effects of boron on the microstructure and crystallization behavior of the thin films. The
photocatalytic activity and the hydrophilicity of the films were also measured. The results showed that the
photocatalytic activity of TiO2 films was improved by doping boron, and its hydrophilicity wasn’t
destroyed. This can be ascribed to the enhancement of the surface energy, which was caused by the
reduction of the crystal grain size of TiO2.
Abstract: Based on the slip casting and the preparation of sialon synthesized from clay, fly ash and
gangue by the carbothermal reduction nitridation, the influences of compositions, dispersant additive and
sintering process on the properties of materials have been investigated in present work. The experimental
results indicate that disposal of fly ash via a pickling process can greatly reduce the content of iron, and
the effect is obvious with increasing the concentrations of hydrochloric acid and pickling temperature.
Therefore the component of the final product can be purified. It is also noted that the final density of the
sintered body using colloidal process is superior to that of using conventional dry pressing, although the
slightly higher green density is observed in dry pressing body because of high compaction pressure.
Abstract: The Ce4+-modified titania nanofilm was deposited onto mild steels by the sol-gel method. The
effect of the film on protecting mild steels from oxidation was studied by means of oxidation test, SEM
and XRD. It was found that the anti-oxidation effect is increased by Ce4+ modifying and with increasing
layer number. When oxidized below 600 oC, the Ce4+-modified double-layer titania nanofilm possesses
an excellent anti-oxidation performance that is comparable with that of the stainless steel.
Abstract: We demonstrate here a self-formation phenomenon of hierarchy with multiple-scaled porosity.
Macrochanneled structures, labelled as CMI-7, with openings ranging from 0.5 to 5.0 microns and
wormhole-like mesoporous walls with various ceramic compositions, such as ZrO2, TiO2, Al2O3, Y2O3,
ZrO2-SiO2, ZrO2-TiO2, ZrO2-Y2O3,…, aluminosilicates, aluminophosphates, silicoaluminophosphates,
metallophosphates, can be prepared by just controlling the hydrolysis and polycondensation rates of the
pre-selected ceramic sources. The macrochannels (funnel-like or straight) are well parallel each other and
perpendicular to the tangent of the particles’ surface. These hierarchical porous ceramics can be used in
catalysis, separation and for immobilization of biological molecules and even microorganisms for
filtration and bioreactor applications.
Abstract: The anodized TiO2 ceramic film was post-treated by photoreduction and ion sputtering,
respectively, to deposit platinum on the surface of the films. Surface morphology, the main elements of
the films and platinum distribution on the film surface were investigated by scanning electron microscopy
and energy dispersive spectroscopy. The phase composition of the films was examined by X-ray
diffraction. The photocatalytic activity was compared through the effect of the films on photocatalytic
(PC) degradation rate of the humic acid. The results showed that both films were composed of Pt5Ti3,
rutile (R) TiO2 and anatase (A) TiO2, and the content of TiO2 (R) of the film prepared by photoreduction
was a little more than that of the film by ion sputtering. Compared with Pt on the Pt-TiO2 ceramic film by
photoreduction, Pt on the Pt-TiO2 film by ion sputtering dispersed more evenly and the grains were much
smaller. Pt particulates in the film post-treated by ion sputtering were more strongly combined with the
film than those by photoreduction. Besides, the PC degradation rate of humic acid by both Pt-TiO2 films
were higher than that by TiO2 film, and Pt-TiO2 film by ion sputtering had higher catalytic activity and
longer using life than that by photoreduction.
Abstract: La3+ and Co2+ co-doped titania nanoparticles were prepared from reacting TiOSO4, La(NO3)3
and Co(NO3)2 with NH4OH in water/Triton X-100/n-hexanol/cyclohexane microemulsions. The structure,
surface morphology and the specific surface area of the samples were characterized. The photocatalytic
efficiency of as-prepared TiO2 was tested by photodegrading methyl orange. The results showed that
doping with La3+ and Co2+ could suppress the growth of TiO2 grains and increase the specific surface area;
When the calcination temperature increased from 300°C to 900°C, the average crystallite size of the
particles increased from 7.3nm to 35.6 nm andthe specific surface area of the particles decreased rapidly
from 205.5m2/g to 41.2m2/g. The synthesized amorphous particles wer transformed into anatase phase at
300°C, and further into rutile phase at 900°C. UV-Vis diffuse reflectance spectrum revealed that La3+ and
Co2+ co-doped TiO2 absorbed UV light and visible light, while pure TiO2 could only absorb UV light. In
the experiments of photodegrading methyl orange, it was proved that La3+ and Co2+ co-doped TiO2 had
high photocatalytic activity under UV light and visible light, while pure TiO2 showed photocatalytic
activity just under UV light.
Abstract: Rare-earth doped porous nanocrystalline TiO2 films were prepared via sol-gel method. The
effect of preparation conditions on the properties of the resulting thin films, such as structure, surface
topography and photocatalysis properties was analyzed. It indicated that appropriate doping of rare-earth
element improves the photocatalysis ability of the thin titanium oxide films. The thin titanium oxide films
have good photocatalysis properties in visible light region because of the red shift of energy level. It also
revealed that uni-doped of cobalt is better than that of cobalt and lanthanum, while co-doping of cerium,
cobalt and lanthanum may cause the best photocatalysis properties.
Abstract: Micro-porous TiO2 ceramic films have been grown on titanium plates by the micro-plasma
oxidation method with the electrolyte of H2SO4. The influence of La3+ ion addition in the electrolyte on
the photo-catalytic activities was investigated. The results showed that titanium dioxide thin films
produced with La3+ addition electrolyte exhibit higher photo-activity than pure electrolyte for the
oxidation of rhodamine B. The removal of rhodamine B reaches 90% for 30 min when La3+ addition
concentrate is 0.05 g/L. Experimental results of X-ray diffraction and atom force microscopy show that
the increase in activity is related to change in the lattice parameters and cell volume.