RCEES OpenIR  > 环境纳米技术与健康效应重点实验室
Microwave-Induced Interfacial Nanobubbles
Wang, Lei; Miao, Xiaojun; Pan, Gang
2016-11-01
Source PublicationLANGMUIR
Volume32Issue:43Pages:11147-11154
AbstractA new method for generating nanobubbles via microwave irradiation was verified and quantified. AFM measurement showed that nanobubbles with diameters ranging from 200 to 600 nm were generated at a water-HOPG surface by applying microwave radiation to aqueous solutions with 9.0-30.0 mg/L dissolved oxygen. Graphite displays strong microwave absorption and transmits high thermal energy to the surface. Because of the high dielectric constant (20 degrees C, 80 F/m) and dielectric loss factor, water molecules have a strong ability to absorb microwave radiation. The thermal and nonthermal effects of microwave radiation made contributions to decreasing the gas solubility, thus facilitating nanobubble nucleation. The yield of nanobubbles increased about 10-fold when the irradiation time increased from 60 to 120 s at 200 W of microwave radiation. The nanobubble density increased from 0.8 to 15 mu m-2 by improving the working power from 200 to 600 W. An apparent improvement in nanobubbles yield was obtained between 300 and 400 W, and the resulting temperature was 34-52 degrees C. When the initial dissolved oxygen increased from 11.3 to 30.0 mg/L, the density of nanobubbles increased from 1.2 to 13 mu m-2. The generation of nanobubbles could be well controlled by adjusting the gas concentration, microwave power, or irradiation time. The method may be valuable in preparing surface nanobubbles quickly and conveniently for various applications, such as catalysis, hypoxia/anoxia remediation, and templates for preparing nanoscale materials.
Department环境纳米材料实验室
DOI10.1021/acs.langmuir.6b01620
Indexed BySCI
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Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/35997
Collection环境纳米技术与健康效应重点实验室
Recommended Citation
GB/T 7714
Wang, Lei,Miao, Xiaojun,Pan, Gang. Microwave-Induced Interfacial Nanobubbles[J]. LANGMUIR,2016,32(43):11147-11154.
APA Wang, Lei,Miao, Xiaojun,&Pan, Gang.(2016).Microwave-Induced Interfacial Nanobubbles.LANGMUIR,32(43),11147-11154.
MLA Wang, Lei,et al."Microwave-Induced Interfacial Nanobubbles".LANGMUIR 32.43(2016):11147-11154.
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