For efficiently measuring copper (II) ions in the acidic media of white wine, a new chemosensor based on rhodamine B coupled to a tetraazamacrocyclic ring (13aneN4CH2NH2) was designed and synthesized by a one-pot reaction using ethanol as a green solvent. The obtained chemosensor was characterized via NMR, UV and fluorescent spectra. It was marked with no color emission under neutral pH conditions, with a pink color emission under acidic conditions, and a magenta color emission under acidic conditions where copper (II) ions were present. The sensitivity towards copper (II) ions was tested and verified over Ca2+, Ag+, Zn2+, Mg2+, Co2+, Ni2+, Fe2+, Pb2+, Cd2+, Fe3+, and Mn2+, with a detection limit of 4.38 × 10−8 M in the fluorescence spectrum.
A one-pot solvothermal method was used to prepare a layered Bi2Te3 nanoplates/graphene composite with outstanding gravimetric and volumetric Na-ion storage performance.
For exploring the interesting solvent effect on structure and morphology, a variety of MgWO4 nanoparticles were prepared by a one-pot solvothermal method with different proportional solvents of water and ethylene glycol. The results showed that monoclinic wolframite crystalline structure of MgWO4 was successfully synthesized, corresponding to two standard cards of MgWO4 (JCPDS No. 27-0789) and MgWO4 (JCPDS No. 19-0776), respectively. The morphology of MgWO4 nanoparticles presents eight different shapes and orderly transforms from one shape to another with increasing water content in mixed EG-water solvents, and a possible mechanism was proposed. The catalytic activities of these MgWO4 nanoparticles on the thermal decomposition of Ammonium Perchlorate (AP) were compared using differential scanning calorimetry (DSC) method, and found to present good change rule with particle size.
A Pt/graphene aerogel hybrid catalyst synthesized via a facile one-pot solvothermal method exhibits 2.86 times higher activity for methanol electrooxidation than that of Pt/graphene and the stability is improved by 10% as compared with Pt/graphene.
Photocatalytic degradation of Rhodamine B (RhB) dye in waste water and enzymatic inhibition study using cauliflower shaped ZnO nanoparticles synthesized by a novel One-pot green synthesis method
