Roll-to-roll fabrication of superhydrophobic pads covered with nanofur for the efficient clean-up of oil spills

• Patrick Weiser,
• Robin Kietz,
• Marc Schneider,
• Matthias Worgull and
• Hendrik Hölscher

Beilstein J. Nanotechnol. 2022, 13, 1228–1239, doi:10.3762/bjnano.13.102

• polymeric pads are 48 mm in diameter and filled with an oil-absorbing material. On the outside, they are covered with superhydrophobic and oleophilic nanofur, which repels water and attracts oil at the same time. In order to utilize this feature in an efficient way and to allow for continuous oil absorption

• contact angle measurements, especially on hydrophobic surfaces, can further distort the measured values [30]. The quality of the nanofur in terms of its hydrophobicity and oil absorption quantity depends on several processing factors including length of the hairs, their density, and their overall

• account [30]. To illustrate the superhydrophobic properties of the nanofur, the video in Supporting Information File 1 shows water drops on a polypropylene sheet rolling around as the sheet is tilted. The high contact angle can be seen even with the naked eye. Since oil absorption is one of the

Topochemical engineering of composite hybrid fibers using layered double hydroxides and abietic acid

• Liji Sobhana,
• Lokesh Kesavan,
• Jan Gustafsson and
• Pedro Fardim

Beilstein J. Nanotechnol. 2019, 10, 589–605, doi:10.3762/bjnano.10.60

• purity, bonding, and morphology. These fibers further were tested for water contact angle (hydrophobicity), oil absorption (lipophilicity), tensile strength and ISO brightness measurements. The performance of C-HF was compared with unmodified reference fibers (REF), fibers composed with only AA (C-F) and

• these materials show different properties with regard to water repellency, oil absorption, tensile strength, and optical brightness. Composing renewable materials such as cellulose and abietic acid for customized product development is in the line of interests of circular-economy initiatives implemented

• our earlier reported work. Those methods are 1) pulp disintegration, 2) LDH preparation in the presence of pulp fibers, 3) water contact angle measurements, 4) oil absorption measurements, 5) tensile strength measurements, 6) fiber handsheet making. The remainder of the protocols are reported here for

Ultralight super-hydrophobic carbon aerogels based on cellulose nanofibers/poly(vinyl alcohol)/graphene oxide (CNFs/PVA/GO) for highly effective oil–water separation

• Zhaoyang Xu,
• Huan Zhou,
• Sicong Tan,
• Xiangdong Jiang,
• Weibing Wu,
• Jiangtao Shi and
• Peng Chen

Beilstein J. Nanotechnol. 2018, 9, 508–519, doi:10.3762/bjnano.9.49

• ° (super-hydrophobic) and high oil absorption capacity (97 times its own weight). The carbonization treatment of the CNF/PVA/GO aerogel not only improved the hydrophobic properties but also enhanced the adsorption capacity and specific surface area. Given the many good performance characteristics and the

• facile preparation process of carbon aerogels, these materials are viable candidates for use in oil–water separation and environmental protection. Keywords: 3D network structure; carbon aerogel; cellulose nanofibers; graphene oxide; oil absorption; poly(vinyl alcohol); Introduction In recent years, oil

• properties but also exhibit some drawbacks such as poor hydrophobic properties and low oil absorption capacity. Therefore, a carbonization treatment of the CNF/PVA/GO aerogels was required to improve their properties. In this work, we present a facile process for preparing carbon aerogels exhibiting super