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1. Enzymatic preparation of hydrophobic biomass with one-pot synthesis and the oil removal performance

Author:
Dan Peng; Wenjie Li; Xujun Liang; Liuchun Zheng; Xuetao Guo
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 105-116
ISSN:
1001-0742
Subject:
agricultural wastes; biomass; biosorbents; contact angle; corn stover; human health; hydrophobicity; laccase; lignin; oils; pith; pollution; sorbents; sorption; surfactants; synthesis; van der Waals forces; wastewater; China
Abstract:
... Oil pollution is causing deleterious damage to aquatic ecosystems and human health. The utilization of agricultural waste such as corn stalk (CS) to produce biosorbents has been considered an ecofriendly and efficient approach for removing oil. However, most previous studies focused on the modification of the whole CS, which is inefficient due to the heterogeneity of CS. In this study, corn stalk ...
DOI:
10.1016/j.jes.2021.10.019

2. A 2-D analytical model for the wetting behavior of various microtextured surfaces

Author:
P. Xu; J.R. Bai; P. Zhou; L.L. Wang; X.N. Sun; L. Wei; Q.F. Zhou
Source:
Colloids and surfaces 2022 v.636 pp. 127853
ISSN:
0927-7757
Subject:
Gibbs free energy; contact angle; energy; hydrophilicity; hydrophobicity; hysteresis; liquids; microstructure; models; vapors; wettability
Abstract:
... In this work, a physical model for various microtextured surfaces was proposed to investigate their wettability, and in particular, superhydrophobicity. Using such an analytical model, the thermodynamic states, and specifically, free energy and free energy barriers of the concerned surfaces such as trapezoidal, vertical and inverse-trapezoidal surfaces, which were correlated the contact angle and ...
DOI:
10.1016/j.colsurfa.2021.127853

3. A bioinspired approach to fabricate fluorescent nanotubes with strong water adhesion by soft template electropolymerization and post-grafting

Author:
Ananya Sathanikan; Giacomo Ceccone; Jorge Bañuls-Ciscar; Miaobo Pan; Fadwa Kamal; Talia Bsaibess; Anne Gaucher; Damien Prim; Rachel Méallet-Renault; Pascal Colpo; Sonia Amigoni; Frédéric Guittard; Thierry Darmanin
Source:
Journal of colloid and interface science 2022 v.606 pp. 236-247
ISSN:
0021-9797
Subject:
X-ray photoelectron spectroscopy; adhesion; contact angle; energy; equations; fluorescence; hydrophobicity; liquids; nanotubes; polymerization; polymers
Abstract:
... In this original work, we aim to control both the surface wetting and fluorescence properties of extremely ordered and porous conducting polymer nanotubes prepared by soft template electropolymerization and post-grafting. For reaching this aim, various substituents of different hydrophobicity and fluorescence were post-grafted and the post-grafting yields were evaluated by surface analyses. We sho ...
DOI:
10.1016/j.jcis.2021.08.013

4. A biorefinery approach for the conversion of Cynara cardunculus biomass to active films

Author:
Seyedeh Fatemeh Mirpoor; Simona Varriale; Raffaele Porta; Daniele Naviglio; Mariachiara Spennato; Lucia Gardossi; C. Valeria L. Giosafatto; Cinzia Pezzella
Source:
Food hydrocolloids 2022 v.122 pp. 107099
ISSN:
0268-005X
Subject:
Cynara cardunculus; antioxidant activity; biomass; biorefining; cardoons; contact angle; glycerol; hydrocolloids; hydrophobicity; leaf extracts; microstructure; oxygen; perennials; phenol; plasticizers; water solubility
Abstract:
... Cardoon (Cynara cardunculus), an herbaceous perennial plant able to grow with high productivity in dry and hot regions, as well as in unproductive soils, was used as a biomass source for the production of both bioactive compounds derived from leaves and proteins extracted from seeds. Naviglio® technology was found as an efficient method to obtain a cardoon leaf extract (CLE) characterized by high ...
DOI:
10.1016/j.foodhyd.2021.107099

5. A comparative study between two novel silicone/graphene-based nanostructured surfaces for maritime antifouling

Author:
Mohamed S. Selim; Nesreen A. Fatthallah; Shimaa A. Higazy; Zhifeng Hao; Ping Jing Mo
Source:
Journal of colloid and interface science 2022 v.606 pp. 367-383
ISSN:
0021-9797
Subject:
antibacterial properties; biodegradability; boehmite; comparative study; contact angle; crystal structure; field experimentation; graphene; graphene oxide; hot water treatment; hydrophobicity; image analysis; nanocomposites; nanorods; polydimethylsiloxane; roughness; seawater; surface area
Abstract:
... Two novel superhydrophobic nanocomposite series of polydimethylsiloxane (PDMS) enriched with reduced graphene oxide (RGO) and graphene oxide/boehmite nanorods (GO-γ-AlOOH) nanofillers were synthesized as maritime fouling-release (FR) surfaces. Controlling the nanofillers' structures and distribution in the silicone matrix influenced the self-cleaning and antifouling properties. γ-AlOOH nanorods ha ...
DOI:
10.1016/j.jcis.2021.08.026

6. A comparative study of mechanical and chemical durability of non-wetting superhydrophobic and lubricant-infused surfaces

Author:
S.M.A. Mousavi; R. Pitchumani
Source:
Colloids and surfaces 2022 v.643 pp. 128711
ISSN:
0927-7757
Subject:
comparative study; contact angle; corrosion; durability; electroplating; hydrophobicity; marine environment
Abstract:
... Fabrication of bioinspired non-wetting superhydrophobic surfaces (SHS) and lubricant-infused surfaces (LIS) has been studied extensively on a variety of materials. In contrast, durability of the surfaces exposed to harsh mechanical and chemical environments has been the subject of little attention. This study considers the mechanical and chemical durability of SHS and LIS copper surfaces fabricate ...
DOI:
10.1016/j.colsurfa.2022.128711

7. A comprehensive evaluation for microfluidic fuel cells from anti-vibration viewpoint using phase field theory

Author:
Tiancheng Ouyang; Jingxian Chen; Wenjun Liu; Peihang Xu; Jie Lu; Zhongkai Zhao
Source:
Renewable energy 2022 v.189 pp. 676-693
ISSN:
0960-1481
Subject:
anodes; carbon dioxide; contact angle; electronic equipment; fuel cells; liquids; mathematical theory; models; vibration
Abstract:
... Microfluidic fuel cell is an underlying clean power in the future, it is regarded as a new developing direction of power source in portable electronic device with its considerable power output and cleanness, but some challenges hinder it in putting into practical application. Vibration and two-phase flow are the two non-negligible factors which have an impact on the liquid-feed microfluidic fuel c ...
DOI:
10.1016/j.renene.2022.03.067

8. A contribution to flotation technique as a reliable wettability alteration measurement method for carbonate minerals in separation processes involving hydrocarbons, low salinity water and nanofluids

Author:
Mehdi Sadeghi; Rohallah Hashemi; Hamidreza Shahverdi
Source:
Colloids and surfaces 2022 v.633 pp. 127912
ISSN:
0927-7757
Subject:
carbonates; contact angle; hydrophilicity; nanofluids; oils; salinity; seawater; wettability
Abstract:
... A reliable flotation method was developed and experimentally evaluated as a fast and repeatable quantitative wettability measurement technique for Enhanced Oil Recovery (EOR) purposes by comparing its performance with the well-known and reliable method of contact angle measurement. In both methods, oil-wet carbonate specimens were contacted with brines of different salinities and nanoparticle conc ...
DOI:
10.1016/j.colsurfa.2021.127912

9. A durable superhydrophobic porous polymer coated sponge for efficient separation of immiscible oil/water mixtures and oil-in-water emulsions

Author:
Li Gong; Hongxia Zhu; Wenhao Wu; Daohui Lin; Kun Yang
Source:
Journal of hazardous materials 2022 v.425 pp. 127980
ISSN:
0304-3894
Subject:
absorbents; absorption; contact angle; durability; hydrophobicity; melamine; oils; polymers; skeleton; surface area
Abstract:
... Oil spills and organic solvents leakages have led to serious environmental problems, which calls for the emerging materials for the separation of oil/organic solvents from water effectively. Herein, a superhydrophobic/superoleophilic, SHMP-1@Sponge, with water contact angle (WCA) of 156° and oil contact angle of 0°, was fabricated by dip coating polymer SHMP-1 powder onto the skeleton of 3D melami ...
DOI:
10.1016/j.jhazmat.2021.127980

10. A facile and effective strategy to develop a super-hydrophobic/super-oleophilic fiberglass filter membrane for efficient micron-scale water-in-oil emulsion separation

Author:
Yujie Zhou; Lantao He; Linxi Wang; Gaoxiang Chen; Jianhong Luo
Source:
RSC advances 2022 v.12 no.6 pp. 3227-3237
ISSN:
2046-2069
Subject:
UHT treatment; contact angle; crosslinking; emulsions; energy; fiberglass; hydrophobicity; nanospheres; nanowires; particle size; silica
Abstract:
... In order to achieve efficient micron-scale water-in-oil emulsion separation, a facile and effective strategy is developed to prepare a super-hydrophobic/super-oleophilic fiberglass filter membrane (FGm). Methyl-trichlorosilane (MTS) is successfully cross-linked on the surface of the fiberglass filter membrane (FGm) and aggregates into a 3D nanowire array to provide low surface energy. Nano fumed h ...
DOI:
10.1039/d1ra08841f

11. A facile and fast preparation of robust superhydrophobic brass mesh coated with Cu(OH)2 nanowires by pulse electrodeposition for continuous highly efficient oil/water separation

Author:
Yonghui Zhang; Jiangwen Liu; Ligeng Ouyang; Kai Zhang; Guie Xie; Shuzhen Jiang
Source:
Colloids and surfaces 2022 v.634 pp. 127968
ISSN:
0927-7757
Subject:
abrasion resistance; contact angle; electroplating; gravity; hydrophobicity; nanowires; oils; wastewater
Abstract:
... Effective separation of industrial oily wastewater and oil leak has long been treated as an important link to ensure rapid and harmonious development of economy and society. In this article, a robust superhydrophobic/superlipophilic brass mesh with micro/nano dual-scale structures was successfully fabricated by a fast pulse electrodeposition followed by a two-step simple and nonfluorinated immersi ...
DOI:
10.1016/j.colsurfa.2021.127968

12. A facile method to prepare superhydrophobic nanocellulose-based aerogel with high thermal insulation performance via a two-step impregnation process

Author:
Caihong Chen; Chao Li; Deyou Yu; Minghua Wu
Source:
Cellulose 2022 v.29 no.1 pp. 245-257
ISSN:
0969-0239
Subject:
aerogels; air; cellulose; cellulose nanofibers; contact angle; freeze drying; hydrolysis; hydrophobicity; insulating materials; risk; silicon; siloxanes; thermal conductivity
Abstract:
... Nanocellulose aerogel is the third generation aerogel, and its highly interconnected porous network structure makes it an extraordinary thermal insulation material. However, there are abundant hydroxyl groups on the surface of cellulose nanofibrils, which causes the nanocellulose aeogels to absorb moisture in the air and the environment easily, thereby destroying their porous network structure and ...
DOI:
10.1007/s10570-021-04275-x

13. A fast and efficient method for the efficient recovery of crude oil from spent hydrodesulphurization catalyst

Author:
Jing Gao; Meng Hao; Tao Wu; Yujiang Li
Source:
Colloids and surfaces 2022 v.642 pp. 128650
ISSN:
0927-7757
Subject:
acetone; carbon; catalysts; chemical structure; combustion; contact angle; energy; gas chromatography-mass spectrometry; heat; hexane; methylene chloride; oils; particle size; petroleum; rheometers; solvents; temperature; viscosity; xylene
Abstract:
... The deoiling process is a critical issue in catalyst regeneration and recovery of precious metals from spent catalysts. This study developed a fast and efficient method to recover crude oil from spent hydrodesulphurization (HDS) catalysts. We employed four solvents (p-xylene, acetone, dichloromethane, and n-hexane) with different polar and aromatic properties to remove crude oil from the spent cat ...
DOI:
10.1016/j.colsurfa.2022.128650

14. A high-stable and sensitive colorimetric nanofiber sensor based on PCL incorporating anthocyanins for shrimp freshness

Author:
Li Liu; Junjun Zhang; Xiaobo Zou; Muhammad Arslan; Jiyong Shi; Xiaodong Zhai; Jianbo Xiao; Xin Wang; Xiaowei Huang; Zhihua Li; Yanxiao Li
Source:
Food chemistry 2022 v.377 pp. 131909
ISSN:
0308-8146
Subject:
Clitoria ternatea; ammonia; anthocyanins; color; colorimetry; contact angle; food chemistry; freshness; hydrophobicity; nanofibers; pH; permeability; shrimp; spoilage; water vapor
Abstract:
... A novel bilayer colorimetric film incorporating polycaprolactone (PCL) with clitoria ternatea Linn anthocyanin (CA) via electrospinning was designed. The PCL nanofibers layer acted as a protective layer against harsh environments as the strong hydrophobic with the WCA (water contact angle) values of 101.79°. The PCL-CA layer worked as an indicator for its significant color changes for pH. The sens ...
DOI:
10.1016/j.foodchem.2021.131909

15. A high-stable soybean-oil-based epoxy acrylate emulsion stabilized by silanized nanocrystalline cellulose as a sustainable paper coating for enhanced water vapor barrier

Author:
Xuwang Tian; Min Wu; Zhiwei Wang; Jian Zhang; Peng Lu
Source:
Journal of colloid and interface science 2022 v.610 pp. 1043-1056
ISSN:
0021-9797
Subject:
cellulose; chemical reactions; contact angle; dispersibility; emulsifiers; emulsions; epoxides; hydrophobicity; nanocrystals; oil-water interface; paper; polymers; soybean oil; surface tension; value added; viscoelasticity; water vapor; wettability
Abstract:
... Soybean-oil-based polymer is a promising bio-based water barrier coating on paper packaging but the application is challenged due to its poor water dispersibility. In this present study, 3-aminopropyltriethoxysilane (APTES) modified nanocrystalline cellulose (NCC) was used to implement a stable dispersion of acrylated epoxidized soybean oil (AESO) in water and thus synergistically improved the wat ...
DOI:
10.1016/j.jcis.2021.11.149

16. A hydrophobic-hydrophilic MXene/PVDF composite hollow fiber membrane with enhanced antifouling properties for seawater desalination

Author:
Tao Zhang; Xin Guo; Brusly Solomon; Mohsen Sharifpur; Li-Zhi Zhang
Source:
Journal of membrane science 2022 v.644 pp. 120146
ISSN:
0376-7388
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; air; contact angle; desalination; energy; hydrophilicity; hydrophobicity; moisture diffusivity; pollutants; reaction mechanisms; seawater; solar energy; surface roughness; thermoplastics
Abstract:
... Hollow fiber membrane-based humidification-dehumidification desalination of seawater is a low-carbon freshwater-harvesting technology that can be powered by low-grade solar energy. Polyvinylidene fluoride (PVDF) can be easily fabricated into membranes and is considered the most promising material for industrial seawater desalination. However, membrane fouling and wetting have always been major obs ...
DOI:
10.1016/j.memsci.2021.120146

17. A multi-function textile with pH-induced switch wettability transition for controllable oil−water separation

Author:
Long Feng; Yimiao Hou; Qingqing Hao; Mingxing Chen; Shuo Wang; Xuemin Hu; Wenxiu Yang
Source:
Textile research journal 2022 v.92 no.9-10 pp. 1357-1368
ISSN:
1746-7748
Subject:
contact angle; coprecipitation; durability; ecology; hydrophilicity; hydrophobicity; magnetism; nonwoven fabrics; oil spills; oils; photocatalysis; photolysis; polyamides; polyethylene terephthalates; research; sewage; wastewater; wettability
Abstract:
... The deterioration of water ecology caused by the discharge of oil spill wastewater, industrial sewage, and municipal sewage has attracted wide attention worldwide. Thus, it is significant to design a simple, environmentally friendly approach to separate oil–water mixtures. In this work, three different fabrics with pH-induced wettability transition were prepared by a dip-coating process for oil an ...
DOI:
10.1177/00405175211056981

18. A multifunction superhydrophobic surface with excellent mechanical/chemical/physical robustness

Author:
Zuozhu Yin; Dongpeng Zhou; Min Li; Xiaoxiang Chen; Mingshan Xue; Junfei Ou; Yidan Luo; Zhen Hong
Source:
Colloids and surfaces 2022 v.637 pp. 128258
ISSN:
0927-7757
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; abrasives; contact angle; corrosion; energy; hydrophobicity; polytetrafluoroethylene; roughness; sand; temperature; tensile strength; ultrasonic treatment; ultraviolet radiation
Abstract:
... Superhydrophobic surfaces have many advantages in wetting fields. However, the lack of easyily production methods and limited mechanical/chemical/physical robustness remain the two most pertinent barriers to the scalability, large-area production, and widespread use of superhydrophobic materials. In this work, a mechanical/chemical/physical robustness superhydrophobic coating sample consisting of ...
DOI:
10.1016/j.colsurfa.2022.128258

19. A multifunctional and environmentally safe superhydrophobic membrane with superior oil/water separation, photocatalytic degradation and anti-biofouling performance

Author:
Zuozhu Yin; Feng Yuan; Mingshan Xue; Yahui Xue; Yu Xie; Junfei Ou; Yidan Luo; Zhen Hong; Chan Xie
Source:
Journal of colloid and interface science 2022 v.611 pp. 93-104
ISSN:
0021-9797
Subject:
adhesion; antimicrobial properties; aqueous solutions; contact angle; cost effectiveness; human health; hydrophobicity; methylene blue; oils; photocatalysis; stearic acid; toxicity; ultraviolet radiation; wastewater; wastewater treatment; water solubility
Abstract:
... Wastewater is typically complicated with spilled oil, water soluble toxic dyes and microorganisms, making it hard to be processed and causing a significant threat to the environmental safety and human health. In this paper, we demonstrate a simple solution immersion method to obtain a multifunctional cellulose-based membrane (CBM) that possesses both superhydrophobicity with a water contact angle ...
DOI:
10.1016/j.jcis.2021.12.070

20. A new antibacterial insight of herbal chitosan-based membranes using thyme and garlic medicinal plant extracts

Author:
Hengameh Ahmadi; Mohsen Jahanshahi; Majid Peyravi; Ghasem Najafpour Darzi
Source:
Journal of cleaner production 2022 v.334 pp. 130114
ISSN:
0959-6526
Subject:
antifouling activities; chemical oxygen demand; chitosan; contact angle; garlic; medicinal plants; thyme; toxicity
Abstract:
... In order to overcome the problems caused by the release of toxic biocidal agents, both thyme and garlic as herbal antibacterial extracts were applied for the preparation of two novel chitosan-based membranes (TE-CS/PES and GE-CS/PES) by the surface modification of polyethersulfone (PES) membranes. Several analyses such as FESEM, contact angle, AFM, and FTIR confirmed that the chitosan layer was su ...
DOI:
10.1016/j.jclepro.2021.130114