This study was conducted to assess the water quality affected by different land use patterns in U Minh Ha National Park, Ca Mau, Vietnam. determined characteristics three types (Acacia hybrid, planted melaleuca cajuputi, and natural cajuputi) at plant ages on two acid sulfate soil layers rainy season (8/2018) dry (4/2019) using nine parameters. Multivariate statistical analyses were applied eva...

Aluminum, a trivalent cation unable to undergo redox reactions, is shown to faciliate iron-initiated DOPA oxidation in the melanin pathway under acidic condition of pH 5.5, which is a favored medium for aluminum facilitation of iron-induced lipid peroxidation. In the process of oxidation of DOPA to melanin in the presence of the metal ions, Fe3+ and H2O2 oxidize DOPA to dopachrome (DC), then Al...

The liquid phase esterification of phenyl acetic acid with p-cresol over different metal cation exchanged montmorillonite nanoclays yields p-cresyl phenyl acetate. Different metal cation exchanged montmorillonite nanoclays (M n+ = Al3+, Zn2+, Mn2+, Fe3+, Cu2+) were prepared and the catalytic activity was studied. The esterification reaction was conducted by varying molar ratio of the reactants,...

Abstract Cuadros et al. (2019) used a wide range of data from dioctahedral and trioctahedral Fe3+-bearing, 2:1 phyllosilicates to propose model describing how tetrahedral occupancy by Fe3+ takes place in both phyllosilicates. The partition coefficient approach (Decarreau Petit 2014) focusing on the distribution Al3+ between octahedral sites smectites has been disregarded study (2019). This was ...

This study was initiated to explore a method for producing higher photocatalytic performance in layered double hydroxides (LDHs) through the preparation of ultrathin nanosheets, which would generate surface area (SA). Herein, is detailed fabricating Ni2+-Al3+-LDHs with flower-like morphology assembled from an nanosheet (Ni2+-Al3+-LDHs-U) employing low temperature-reflux together surfactant. The...

Two new symmetrical bis-thiourea, 2,2'-[{(terephthaloylbis(azanediyl)bis(carbonothioyl) bis(azanediyl)}dipropanoic acid] (1A) and 3,3'-[{(terephthaloylbis(azanediyl)bis (carbonothioyl)bis(azanediyl)} dipropanoic acid] (1B) were synthesized by the reaction of terephthaloyl chloride with α- and β-alanine in good yields. Their binding properties were investigated with various metal cations using U...