The effect of SiO2 particles upon stabilization of foam

One-Step Synthesis of Hierarchical Micro-Mesoporous SiO2/Reduced Graphene Oxide Nanocomposites for Adsorption of Aqueous Cr(VI)

“…It can be seen that graphite and GO samples exhibit two sharp and intense peaks centered at 26.5 ∘ (Figure 3(a)) and 9.4 ∘ (Figure 3(b)), respectively. Both of them are the typical (002) diffraction peaks consistent with previous studies [8,22]. According to Bragg equation (2 sin = ), the corresponding lattice parameter of GO is determined to be 0.94 nm, which is larger than that of graphite (0.334 nm), due to the existence of oxygen functional groups.…”

“…Due to their advantages such as environmental friendliness, hydrophilicity, chemical resistance, high strength, and low cost [22][23][24], SiO 2 nanoparticles are undoubtedly a good candidate to decorate graphene materials to overcome the shortage of individual sheets. Thus, SiO 2 /RGO nanocomposites were selected as the promising adsorbents in this study.…”

An Approach to Understanding Cohesive Slurry Settling, Mobilization, and Hydrogen Gas Retention in Pulsed Jet Mixed Vessels

“…The literature contains a number of studies on how particles affect the stability of froths and foams (relevant examples include Garrett 1979;Aronson 1986;Dippenaar 1982aDippenaar , 1982bTang et al 1989;Berg 1989a, 1989b;Hudales and Stein 1990;Koczo et al 1994;Aveyard et al 1994;Kulkarni et al 1.11 1977) and the similar situation of emulsions (Van Boekel and Walstra 1981;Hassander et al 1989;Levine et al 1989aLevine et al , 1989bSharma 1994, 1995). In these studies, particles both increased and decreased the stability of the bubbles, and the role of the particles depended on subtle differences in the bubble (droplet)/particle interactions.…”

Foaming and gas holdup of esterified nanoparticle dispersions in the presence of sodium chloride

“…Tests on the filtered supernatant of 3 wt% Si-OC 8 H 17 dispersions showed a slight increase in the foaminess compared to pure water containing 10 −5 M NaCl (˙ = 0.204 s [14]), suggesting that the presence of impurity or chemical reagents affected the foaminess. The slightly higher foaminess of the continuous phase was not unexpected considering the possibility of the presence of very low concentration of residual acetone, the presence of the buffer solution, and the probable partial dissolution of the particles in alkaline conditions [53,10]. Overall, the presence of particles, at a concentration of 3 wt%, seemed to have only a minor effect on the foaminess.…”