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To improve indoor air quality, a type of highly selective desiccant with core–shell structure, which can adsorb more moisture and less toluene, was developed for heat and moisture recovery. Three desiccants (MS-NH 2 -MAS, MS-NH 2 -PAAS, and MS-NH 2 -PSS) with different shells were successfully prepared by selective amine-functionalization of mesoporous silica (MS) external...
Adsorption behaviors of fulvic acid (FA) and humic acid (HA) on kaolinite, smectite and vermiculite were investigated. To explore the adsorption mechanism, characterization of both the adsorption FA/HA-clay complexes and suspensions was conducted by utilizing multiple analytical techniques including liquid-state 1 H nuclear magnetic resonance spectroscopy, high performance size exclusion chromatography,...
Fe 3 O 4 @mesoporous SiO 2 core–shell composite microspheres (MS), synthesized by a typical solvothermal reaction and PEI functionalized MS (MS-PEI), have been investigated for humic acid (HA) adsorption. The structure of microspheres was characterized using scanning electron microscope, transmission electron microscope, energy dispersive X-ray, N 2 adsorption–desorption,...
We have investigated the behavior of mixed wormlike micelles (WLM) of cationic surfactants with hydrophobic moieties of the same nature but differing in chain length. Hexadecyltrimethylammonium bromide (C 16 TAB) with n=16 carbon atoms in the alkyl chain mixed with other trimethylammonium bromide (C n TAB) surfactants with shorter hydrophobic tails (n=14, 12, 10, and 8) in presence...
A new and simple equation, with only one parameter, was developed to model the equilibrium surface tension of the air/cetyltrimethylammonium bromide (CTAB) solution interface. The new equilibrium model provides a single best-fitted prediction, instead of several solutions obtained by the conventional Szyszkowski equation. Subsequently, the equation was used to develop a new dynamic model, which does...
In the present work, SnSe nanosheets were prepared via a reaction at the oil–water interface in the solvothermal process at low temperature (130°C), which did not involve any templates and amines such as oleylamine. X-ray diffraction, transmission electron microscope, absorption spectrum and nitrogen adsorption were used to characterize the products. The results indicated that the SnSe nanosheets...
The interaction of iron oxide nanoparticles with casein micelles was studied using Dynamic Light Scattering (DLS) size measurement, Ultraviolet–visible (UV–vis) spectroscopy, Fourier Transform InfraRed (FTIR) spectroscopy, ThermoGravimetric Analysis (TGA), rheology and phase contrast microscopy. The whole milk and skimmed milk treated nanocomplex show an absorption peak at 196nm, due to the peptide...
Complex fluids with high concentrations of crystallizing fatty acids are important for consumer skin care products. These fluids exhibit solid-like elastic behavior at rest, but yield and flow under an applied strain. Such behavior is characteristic of isotropic, space-filling networks. The processing determines the microstructure of these systems, which in turn influences their macroscopic rheological...
High quality PbSe and PbTe nanocrystals were synthesized with non-injection one-pot method which could be scale up easily. The use of traditional dangerous pyrophoric trioctylphosphine (TOP) and tributylphosphine (TBP) reagents was avoided. The crystal size was controlled by the reaction time and temperature, and the shape (sphere and cube) was controlled by the use of different combinations of surfactants...
Ordered mesoporous silica (MS) materials were prepared using Pluronic P123 (triblock copolymer poly(ethylene glycol)–block–poly(propylene glycol)–block–poly(ethylene glycol)) and poly(ethylene glycol) as dual templates, and functionalized with (3-aminopropyl)triethoxysilane using the postsynthesis-grafting method. Fourier-transform infrared spectroscopy, 29 Si and 13 C cross-polarization...
Novel bromopropyl functionalized silica nanofiber films were successfully fabricated by electrospinning the mixture of tetraethylorthosilicate (TEOS) and polyvinyl alcohol (PVA), followed by calcination and subsequent surface modification with 3-bromopropyl trichlorosilane (BPTCS). A polychlorinated chemical of dieldrin detected from the surface water frequently was selected as a model pollutant to...
Au@Pt core–shell nanoparticles were successfully synthesized by successive reduction of HAuCl 4 and H 2 PtCl 6 and were then assembled on Vulcan XC-72 carbon surface (noted as Au@Pt/C). The morphology and distribution of Au@Pt nanoparticles were characterized by UV–vis spectroscopy, transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDS) and the...
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