Sb–SnO2 nanoparticles onto kaolinite rods: assembling process and interfacial investigation

Abstract

In this article, we reported the synthesis of novel Sb-SnO 2 /kaolinite (SK) nanocomposites by assembling antimony-doped tin oxide (ATO) nanoparticles on the surface of kaolinite rods without addition of dispersant. The samples were characterized by X-ray diffraction, transmission electron microscopy (TEM), high-resolution TEM, X-ray photoelectron spectroscopy (XPS), and N 2 adsorption-desorption techniques. The crystal size and loading density of ATO nanoparticles onto kaolinite rods could be controlled through the synthetic conditions. The color and resistivity of the composites varied with the loading density of ATO nanoparticles. Investigations of the interfacial binding between ATO layer and rod surface indicated that surface characteristics could facilitate the deposition of various metal oxides nanoparticles. XPS analysis demonstrated that the entrance of Sb 5? into SnO 2 crystallite led to the improvement of conductivity and the color change of the composites. The formation mechanism for SK composites was also discussed.

Transparent p-type AlN:SnO2 and p-AlN:SnO2/n-SnO2:In2O3 p-n junction fabrication

“…In addition, the additional peak of 74.70 6 0.15 eV also indicates the possible of Al-O-Sn chemical bond. 15 According to the previous XPS analysis of the annealed AlN:SnO 2 thin films, both N 3-O 2À and Al 3þ -Sn 4þ substitution reactions could occur in AlN:SnO 2 thin films annealed at a temperature of over 400 C, which are the main mechanisms creating the electron-hole carriers and causing the carrier polarity transition. The concentration results of AlN:SnO 2 thin films [ Fig.…”

Synthesis and conductive performance of antimony-doped tin oxide-coated TiO2 by the co-precipitation method

“…As mentioned above, the Sb-SnO 2 can be the conductive coating layer of composite materials. In addition, some reports have applied natural minerals as the substrate to synthesize antistatic composite materials, such as Sb-SnO 2 coated talc [9], Sb-SnO 2 coated on kaolinite (SSK) [10], Sb-SnO 2 coated diatomite with porous structure (DATO) [11]. These antistatic composite materials have greater prospect than traditional materials such as metal, carbon black, carbon fiber, metal fiber and metal oxides [12,13].…”

Surface Covering of Antimony-Doped Tin Oxide on Titanium Dioxide and Resistivity Analysis

“…Zhang [6] first reported the synthesis of ATO nanoparticles via the method. The hydrolysis reaction rate of the technique was under control [7,8]; besides, the precipitation reaction was easy to implement, and the costs of reagents and equipment were low, making it desirable for the large-scale production of metallic oxide [9][10][11].…”

“…3) The substrate material and ATO should have similar crystal structure to build strong interfacial bonding, and should have different thermal stabilities to stabilize the structure. The substrates, including montmorillonite [12], kaolinite rods [8], sepiolite [13], silicon dioxide [14], titanium dioxide [15,16] and attapulgite [17], etc., were used early. In the present work, the substrate material was nano-sized rutile titanium and it had the same tetragonal system as SnO2, with nontoxicity [18] and low-cost advantages.…”