Mechanoluminescence (ML, also known as triboluminescence or fractoluminescence) is the emission of light due to the application of mechanical stress to a crystal.1 This light is the result of a dielectric breakdown of the intervening gas and the crystal caused by internal electrification at the fracture plane of a piezoelectric crystal. When ML is induced by such mechanical means as grinding, s...

The purpose of the current study is to evaluate formaldehyde degradation ratio with various methods in a batch reactor. In this work, the ozonation, sonolysis (ultrasonic), and ozone sonolysis, sono catalytic ozonation (SCO), and nano zero-valent iron catalyst processes were investigated for removal of formaldehyde. In addition, the influence of important factors such as pH (5–9), ultrasonic po...

The electrical impedance behavior of gellan gum (GG), GG-carbon nanotube, and GG-carbon nanofiber hydrogel composites is reported. It is demonstrated that the impedance behavior of these gels can be modeled using a Warburg element in series with a resistor. Sonolysis (required to disperse the carbon fillers) does not affect GG hydrogel electrical conductivity (1.2 ± 0.1 mS/cm), but has a detrim...

Chemical reactions may experience numerous and varied effects under the influence of ultrasound. This soft radiation, often viewed as a lab trick, induces and improves both physical and chemical transformations by means of efficient agitation, dissolution, mass and heat transfers, and reagents sonolysis, which all arise from the cavitational collapse. An empirical rationale that distinguishes b...

Acoustic cavitation is an effective means of concentrating energy and can be used to drive a variety of chemical reactions. By changing the experimental parameters that control conditions during bubble collapse, different chemical environments can be created. The sonochemical reactions associated with metal carbonyls in alkane solvents are quite diverse and illustrate this phenomena. For exampl...