Controlled hydrothermal synthesis of ball-flower Ni(OH)2/NiOOH composites assisted by rosin-based betaine zwitterionic surfactant

Abstract

The ball-flower Ni(OH) 2 /NiOOH composites were successfully synthesized via a facile hydrothermal method, using nickel sulfate as precursor and urea as precipitant, and the rosin-based betaine zwitterionic surfactant as annexing agent. The optimum condition of preparing ball-flower Ni(OH) 2 /NiOOH composites was 10 g/L rosinbased betaine zwitterionic surfactant, at 180°C for 8 h. The ball-flower Ni(OH) 2 /NiOOH composites were consisted of nanosheets. X-ray diffraction, Fourier transform infrared spectroscopy, nuclear magnetic resonance, scanning electron microscopy, and surface tension were used to characterize the as-prepared samples. The effect of rosinbased betaine zwitterionic surfactant on the morphology and size of ball-flower Ni(OH) 2 /NiOOH composites were investigated in details. Moreover, a possible formation mechanism was proposed based on the effect of the rosinbased betaine surfactant. The result revealed that the crystallinity of the ball-flower Ni(OH) 2 /NiOOH composites were improved by the rosin-based betaine surfactant, and the morphology and size of Ni(OH) 2 /NiOOH composites could be well controlled in the presence of the rosin-based betaine zwitterionic surfactant.

Molecular Design, Supramolecular Assembly, and Excellent Dye Adsorption Capacity of Natural Rigid Dehydroabietic Acid-Tailored Amide Organogelators

“…The structural information was acquired by 1 H and 13 C NMR, and the signals were assigned based on the literature studies. , …”

“…The structural information was acquired by 1 H and 13 C NMR, and the signals were assigned based on the literature studies. 19,20 DA-1. The signal peaks at 134.72, 145.76, 126.97, 147.11, 147.11 and 123.1 ppm are 6 carbon atoms in the benzene ring.…”