Abstract. Heterogeneous 9-thiourea epiquinine catalysts are prepared by covalently anchoring 9-(3,5-is(trifluoromethyl) phenylthiourea)epiquinine on mesoporous silica surfaces via mercapto linker. It is found that 9-thiourea epiquinine moieties are located comparably on the interior and exterior surfaces of SBA-15 while preferentially on the exterior surface of MCM-41. The heterogeneous 9-thi…
Abstract. This work was to examine the feasibility and efficiency to use bentonite for simultaneous removal of cationic dyes and hydrophobic organic carbons (HOCs) from water. The sorption capacities of crystal violet (CV) on two bentonites and one activated carbon were compared. Simultaneous sorption of CV and 2-naphthol on the two bentonites were tested, and the removal efficiencies of 2-…
Hexagonally patterned arrays of well-aligned, regular ZnO nanopillars with controlled size, shape, and orientation were directly fabricated on zinc foils via a facile wet chemical approach with the assistance of monolayer colloidal crystals (MCC). Two kinds of templates that were derived from MCC, i.e., inverted MCC (IMCC) and connected MCC (CMCC), were employed as masks to define the growth…
Approximately 35–55% of total nitrogen (N) in maize plants is taken up by the root at the reproductive stage. Little is known about how the root of an adult plant responds to heterogeneous nutrient supply. In this study, root morphological and physiological adaptations to nitrate-rich and nitrate-poor patches and corresponding gene expression of ZmNrt2.1 and ZmNrt2.2 of maize seedlings a…