Porous Silica Particles as Oil Absorbents: Comparison of Meso‐, Macro‐, and Meso/Macro‐Structures

Kim, Kwang-Dae; Cho, Youn Kyoung; Han, Sang Wook; Park, Eun Ji; Kim, Dae Han; Jeong, Myung-Geun; Kim, Young Dok; Moon, Jong-Woo; Hong, Eunmi; Lim, Dong Chan

doi:10.1002/bkcs.10330

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…Subsequently, 4 g of cleaned sand grains was placed on mesh basket above 2 g of fluidic PDMS in a stainless steel container. The CVD was done by heating the system to 300 °C ±20 [ 42 ] for 0.5, 1, 2, 3, and 6 h to obtain the sand@PDMS. After the mentioned durations, the thin layer of PDMS was formed on the surface of sand grains.…”

Section: Methodsmentioning

confidence: 99%

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Preparation of Robust Superhydrophobic Sand by Chemical Vapor Deposition of Polydimethylsiloxane for Oil/Water Separation

Mosayebi

Azizian

Noei

2020

Macro Materials & Eng

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In recent years, oil has been released by industrial activities into the aquatic environment and threatened human's and creatures’ health, hence researchers are seeking to find proper methods to separate oil from water. Superhydrophobic surfaces are promising materials for oil/water separation. In the present work, polydimethylsiloxane (PDMS) is loaded on the surface of sand grains by chemical vapor deposition method. The preparation method is a single‐step and simple method and just needs small amounts of a single component (PDMS). The prepared sample is characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), and energy dispersive X‐Ray (EDS) methods, also water contact angle is measured. The water contact angle is about 152±1° and the surface shows superhydrophobic property which can be used as an efficient filter for oil/water separation. The oil/water separation efficiency is high (98%) and almost constant after 25 cycles. The obtained superhydrophobic sand is stable in harsh and corrosive conditions for instance acidic and basic solutions.

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Section: Methodsmentioning

confidence: 99%

“…The stainless steel reactor used for the CVD was equipped with a temperature adjusting system which is composed of heating band, power supply, thermocouple, and temperature controller device. [ 42 ]…”

Section: Methodsmentioning

confidence: 99%

Preparation of Robust Superhydrophobic Sand by Chemical Vapor Deposition of Polydimethylsiloxane for Oil/Water Separation

Mosayebi

Azizian

Noei

2020

Macro Materials & Eng

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A Journey from Structured Emulsion Templates to Multifunctional Aerogels

Isari,

Ghaffarkhah,

Hashemi

et al. 2024

Adv Funct Materials

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Interfacial jamming and assembly, facilitated by nanoparticle surfactant (NPS) complexation, demonstrate a remarkable efficacy in stabilizing multiphase systems, evident in structured liquid streams and structured Pickering emulsions. However, the utilization of structured liquid templates to tune multiple porosity levels of ultra‐flyweight aerogels is barely discussed. In this study, a structured Pickering emulsion is prepared through mixing an aqueous dispersion of graphene oxide (GO) with an organic (hexane) solution containing an active ligand. The emulsion is jetted into the same organic phase, resulting in “dual jamming”. This process produced worm‐like aerogels with porosity that can be precisely tailored at four different levels: i) voids between filaments, ii) cavities produced by evaporation of trapped hexane droplets, iii) pores generated from sublimation of water in the bulk of GO emulsion, and iv) microscopic regions trapped between GO flakes or fractures/holes within GO nanosheets. These aerogels exhibit ultra‐low density (1.67–2.3 mg cm−3), high compressibility, and shape recovery. The multi‐scale porosity, created by structural design, endows aerogels with a record‐level fluid sorption capacity (e.g., 615 g g−1 for chloroform). Additionally, the aerogels demonstrate an absorption‐dominant electromagnetic interference (EMI) shielding mechanism, achieving a remarkable specific EMI shielding (SSE/t) of 67 178 dB cm2 g−1.

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Fabrication of superhydrophobic fibre and its application to selective oil spill removal

Lee

Kim

Han

et al. 2016

Chemical Engineering Journal

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Porous Silica Particles as Oil Absorbents: Comparison of Meso‐, Macro‐, and Meso/Macro‐Structures

Cited by 5 publications

References 29 publications

Preparation of Robust Superhydrophobic Sand by Chemical Vapor Deposition of Polydimethylsiloxane for Oil/Water Separation

Preparation of Robust Superhydrophobic Sand by Chemical Vapor Deposition of Polydimethylsiloxane for Oil/Water Separation

A Journey from Structured Emulsion Templates to Multifunctional Aerogels

Fabrication of superhydrophobic fibre and its application to selective oil spill removal

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