CONSTRUCTION AND BUILDING MATERIALS
·
2024
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IF 7.4
Lan He,Jingjing He,Xinyu Qi,Weijie Wei,Xiaqing Zhang,Jiang Wang,Jin Li,Zhuwei Gao
The pollution of water bodies by oil-containing compounds is increasing. Therefore, new oil-water separation adsorbents are under constant development. In this paper, melamine sponges with three-dimensional flexible porous framework are used to prepare oil-water separation adsorbents. Using a convenient one-step impregnation coating method, the material (THS@MS) was prepared by directly alkylating melamine sponge with a Trimethoxy (1 H, 1 H, 2 H, 2 H-heptadecafluordecyl) silane solution in an acidic (pH=5.5) ethanol solution. The adsorbent was superhydrophobic and had a strong oil adsorption capacity, ranging from 62.03 g/g to 71.33 g/g for various oils and organic compounds. After 50 cycles of oil-water separation, the separation efficiency remained above 95 %. The sponge remained in the superhydrophobic range after multiple separation tests. At this point, the hydrophobicity angle dropped by only a small value of 157.88 ° (compared to 158.57 ° in the original THS@MS test). THS@MS could be used to treat emulsion separations and is highly resistant to strong acid and alkali solutions. Its superhydrophobic properties enhanced self-cleaning ability and provided excellent environmental adaptability. The sponge showed great promise for wide application in real industries.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2019
·
IF 3.073
Meihong Liu,Yiyang Wu,Yuchen Wu,Mingfu Gao,Zhenhua Lü,Sanchuan Yu,Congjie Gao
In this study, hydroxyethyl cellulose (HEC) was cross-flow deposited on flat-sheet polypropylene (PP) porous support and insolubilized by cross-linking using glutaraldehyde (GA) to fabricate cost-effective thin-film composite membrane for aqueous and non-aqueous nanofiltration. Membrane physico-chemical property, permeation performance, as well as tolerance to acid, alkaline and organic solvents were systematically characterized. The obtained HEC/PP composite membrane was found to be effectively modulated in pore size via changing HEC and GA contents and possessed good fabrication reproducibility. The desired HEC/PP composite membrane with an average pore diameter of around 2.21 nm exhibited high fluxes of 41.0 and 8.2 L/m 2 h to pure water and ethanol, respectively, and removals of 99.9%, 99.9% and 96.7% to 50 mg/L dye aqueous solutions of methyl blue, Congo red and sunset yellow, respectively. Soaking tests revealed that the HEC/PP composite membrane possessed good tolerance to acid, alkali and organic solvents of tetrahydrofuran, ethyl acetate and ethanol. Continuous filtration of dye/ethanol solution demonstrated that the HEC/PP membrane possessed excellent long-term durability in ethanol solution, maintaining a stable flux higher than 4.6 L/m 2 h and removals of 95.4% and 84.2% to methyl blue and Congo red, respectively, during the whole filtration of 110 h.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Tianyue Ma,Chunyu Yang,Wei Guo,Huiming Lin,Feng Zhang,Haixia Liu,Le Zhao,Ye Zhang,Yuzhu Wang,Yitong Cui,Jingxiang Zhao,Fengyu Qu
Solar-driven water evaporation provides a promising solution to the energy crisis and environmental issues. Capitalizing on the high photothermal conversion efficiency and excellent resistance to strong acids or strong alkalis of Pt3Ni–S nanowires, we strategically design and prepare a flexible Pt3Ni–S-deposited Teflon (PTFE) membrane for achieving efficient strong acid/alkaline water evaporation under simulated sunlight irradiation (1 sun). By comparing the surface morphology, mechanical properties, and water evaporation performance of the as-prepared three different membranes, we have screened out a high-performance photothermal membrane that has good hydrophobicity (water contact angle = 106°), strong mechanical properties, high light-to-heat conversion efficiency (η = 80%), and excellent durability (10 cycles in a range of pH = 1.2–12). In particular, we explore the mechanism of high surface mechanical properties of the as-prepared membrane using density functional theory. The results demonstrate that the related mechanism can be ascribed to two main reasons: (1) hydrogen bonds can be formed between the 2-pyrrolidone ring and PTFE-3 and (2) the O atom in PTFE-3 carries more negative charge (−0.19 |e|) than PTFE-1 (−0.16 |e|) and PTFE-2 (−0.15 |e|). Our work highlights the great potentials of a Pt3Ni–S-deposited PTFE membrane as a device for implementing solar energy-driven evaporation of industrial wastewater with strong acidity or alkalinity and provides a new strategy for improving the surface mechanical properties of a photothermal membrane.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Mengyue Wang,Wentao Dong,Xi Lu,Qin Yang,Bin Yan
In this work, we developed a high-performance two-component epoxy adhesive from two biobased triple-functional and hexa-functional epoxy monomer from lignin-derived monomer eugenol, and a cellulose-derived furfuryl diamine for metal substrates. Through a tight cross-linked network and rich electronegative structure, the adhesives showed excellent adhesive performance to various metal substrates, especially for Fe. It demonstrated a high lap shear strength up to 19.8 MPa to Fe substrate, surpassing most reported epoxy adhesives. Moreover, these adhesives exhibited excellent long-term adhesion properties in high-temperature and acidic/base aqueous environments. It can maintain more than 95% of the adhesive strength to Fe substrate after soaking in different acid-base environments for 7 days, and achieved a maximum adhesion strength of 16.46 MPa to Fe substrates at 200 °C only 14.2% decrease when compared to that at room temperature. Molecular simulations revealed that these two adhesives could rapidly achieve dynamic equilibrium with Fe (110) surface in 15 and 22 ps which was much shorter than that to Cu and Al, suggesting a stronger binding energy between these adhesive and Fe surfaces and was consistent with the adhesion performance. This work widens the way for high-performance bio-based epoxy adhesives to be used in more demanding environments.
研究领域:
材料科学
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生物化学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Shenghui Ning,Guangyi Tian,Fuchao Yang
With the frequent occurrence of oil spill accidents and the increasing discharge of industrial oily wastewater, oil–water separation has become a global challenge to protect the ecological environment. Simple, fluorine-free preparation of high-throughput superhydrophobic materials is important for realizing efficient separation of oil/water mixtures. Paper-based materials have several advantages, such as low price and renewability, which make them valuable for applications. In this work, we propose a simple and economical two-part immersion technique to prepare superhydrophobic cellulose paper, which is modified with octadecyltrichlorosilane (OTS) directly and then assembled hydrophobic silica. The prepared functionalized paper is not only superhydrophobic (static water contact angle up to 157°) and superoleophilic, but also exhibits acid and alkali resistance and abrasion cycle resistance. After 10 separation cycles for a variety of heavy oil/water mixtures, the separation efficiency was as high as 99.31 % with fluxes greater than 5100 L/(m 2 ·h). This simple, scalable, low-cost superhydrophobic paper shows great potential in the field of oil/water separation.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Chunxia Zhao,Jiaxin Li,Zhuo Chen,Haoran Huang,Jinbo Cheng,Dong Xiang,Zhenyu Li,Yuntao Li,Yuanpeng Wu
The oil spill and industrial oily wastewater in large quantities has caused severe harm to the environment and human health, which make an urgent requirement to develop low-cost, eco-friendly, stable performance and highly efficient oil/water separation materials. Herein, a superhydrophobic/superlipophilic melamine sponge with excellent hydrophobic stability was successfully fabricated via one-step emulsion polymerization . During polymerization, trimethylolpropane triacrylate (TMPTA) and polyethylene imine (PEI) form robust microspheres , and polydimethylsilane (PDMS) cross-links to form hydrophobic coating on the original sponge skeleton. The modified sponge could continuously separate various immiscible oil/water mixtures under harsh conditions (including strong acids, strong bases, salts). Even after 10 consecutive cycles, the separation efficiency for toluene and petroleum ether exceeds 99.87%. In addition, the as-prepared sponge exhibited extraordinarily high oil absorption capacities (with a maximum saturated oil absorption of 107.31 g/g for chloroform) and excellent reversible compressibility (up to 100 compression cycles). More importantly, the pore size of modified sponge was adjusted through a simple mechanical compression strategy so that the compressed sponge met the particle size screening requirements to effectively separate the surfactant-stabilized water-in-oil emulsions. Based on the simple preparation protocol, fluorine-free raw materials, and excellent properties, the MS-TMPTA/PEI-PDMS sponge presented here have extremely promising application potential in oil/water separation.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Cheng Wang,Siqi Huo,Guofeng Ye,Qiu Shi,Zhengping Fang,Hao Wang,Zhitian Liu
To enhance the integrated properties of intumescent fire-resistant coatings (IFRCs) for structural steel, multifunctional phenylboronic acid-decorated zirconium phosphate (ZrP-M) nanosheets were fabricated in this work. The ZrP-M nanosheets featured superior char-forming capacity, flame-retardant effect and hydrophobicity , which simultaneously enhanced the fire resistance, smoke suppression, thermal stability, and water/acid/alkali tolerance of IFRCs. Compared with the unmodified IFRC, the IFRC with 3 wt% ZrP-M (IFRC-4) showed 74.3%, 74.5% and 41.9% reductions in the peak heat release rate (PHRR), total heat release (THR) and total smoke release (TSR). Meanwhile, the IFRC-4 exhibited significantly improved charring capacity and water tolerance, of which the char yield and water contact angle reached 70.9% and 116.9°. The superior fire retardancy and carbonization ability of IFRC-4 enabled it to outperform previous fire-retardant coatings. The introduction of ZrP-M nanosheets also improved the acid and alkali resistance of IFRC. In a fire, the ZrP-M mainly promoted the formation of highly intumescent and compact chars in the condensed phase, thereby strengthening the fire resistance of IFRC. Thus, this work offers an integrated strategy to prepare fire-resistant, smoke-suppressive, thermally-stable and water/acid/alkali-tolerant coatings via introducing versatile ZrP nanosheets, which are expected to find ubiquitous applications in modern construction.
研究领域:
材料科学
·
防火技术
✓ 已验证
DOI
高影响因子
Nanoscale
·
2020
·Vol. 12
·期 45
·23225-23233
·
IF 6.895
Jun-Peng Wu,Wen Liang,Wei-Zhi Song,Li-Na Zhou,Xiao-Xiong Wang,Seeram Ramakrishna,Yun-Ze Long
With the development of technology, environmental problems have become more and more acute and the use of electronic devices in harsh environments has gradually attracted attention. For example, the friction layer of triboelectric nanogenerators (TENGs) may be contaminated and corroded in harsh environments (such as acidic, alkaline or oily environments), resulting in damage or destruction of the TENGs. In this study, we use electrospinning followed by a sintering process to prepare a super-hydrophobic sintered polyvinyl alcohol–polytetrafluoroethylene (S-PVA–PTFE) composite membrane and general industrial oil-absorbing paper to construct a TENG. The maximum power density of the TENG is 261 mW m−2, it can light up 100 blue LEDs, and can power a variety of small electronic devices. Moreover, after 72 h of soaking the friction layer in a strong acid solution followed by a strong alkali solution, the performance of the TENG has no obvious change. The TENG can work stably in an oily working environment. The TENG provides a novel approach for self-powered sensors that work in harsh environments.
研究领域:
材料科学
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能源技术
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环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Lei Han,Yining Hou,Ruihang Zhang,Yang Liu,Yan Xiong,Hao-Ran Zuo,Ming Duan
Membranes constructed via C-C bond formation exhibit superior chemical resistance compared to conventional polyamide (PA) membranes of which the performance often deteriorates under extreme pH conditions, making them promising candidates for dye wastewater treatment. In this study, we developed a novel positively charged nanofiltration (NF) membrane, denoted as PCNM, through redox-initiated interfacial free-radical polymerization. Quaternary ammonium groups were introduced to impart a stable positive charge, significantly enhancing dye separation performance. Membrane morphology and surface roughness were characterized using SEM and AFM. The PCNM membrane demonstrated exceptional rejection (>99%) for all tested cationic dyes, including Crystal violet (CV), Brilliant green (BG), Methylene blue (MEB), and Safranine O (SO) with an outstanding separation factor of 736.6 (CV over Na − SO 4 ). Notably, it retained 99% rejection against CV after 48-hour exposure to 2000 ppm NaClO (96,000 ppm·h), highlighting its outstanding chlorine resistance. Furthermore, the membrane exhibited remarkable pH stability, maintaining 99% rejection against CV after 24-hour immersion in 1 mol/L H 2 SO 4 and 1 mol/L NaOH, respectively. Consequently, this work presents a new strategy for fabricating high-performance positively charged NF membranes via interfacial free-radical polymerization, with significant potential for industrial dye wastewater treatment.
研究领域:
材料科学
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环境工程
·
膜分离技术
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高分子化学
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工业废水处理
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Guanyu Liu,Huiyun Xia,Wenshuo Zhang,Lei Lang,Haipeng Geng,Lifang Song,Yanhui Niu
In recent years, superamphiphobic coatings have been widely used in industrial transportation and environmental treatments because of their unique liquid repellency. In this study, WO3-TiO2 nanorods/SiO2 were used as the constructor of surface microstructures, and 1H,1H,2H,2H-perfluorodecyltriethoxysilane was used as the provider of low surface energy, and a photocatalytic superamphiphobic coating (FTS coating) was prepared. The microstructure and chemical composition of the coating was characterized by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). The coating exhibited excellent photocatalytic activity toward degradation methyl red and nitric oxide (NO), and the degradation efficiency to NO reached 47.8%. Also, the advanced contact angle and the hysteresis angle of water, glycol, glycerol, and olive oil was used to evaluate the superamphiphobicity. After 7 days of ultraviolet (UV) aging, five cycles of airbrush flushing and 48 h of immersion in acid, salt, and alkali solutions, the FTS coating still exhibits excellent amphiphobicity, which lays a foundation for its large-scale applications in the concrete exterior wall. The surface microstructure and the formation of air pockets are a prerequisite for superamphiphobicity, which promotes the liquid on the coating surface into the Cassie-Baxter state. Furthermore, the formation of air pockets is closely related to the gas adsorption capacity and the specific surface area (SBET) of the surface microstructure on the coating surface. The coatings with different SBET constructed and the advanced contact angle were measured. The influence of air pockets on the superamphiphobicity of coatings was studied in combination with the optical microscope. The understanding that SBET further influences superamphiphobicity by affecting the surface air pockets is proposed.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Menghang Qi,Liangsheng Tian,Yutong Wang,Xin Xin,Hang Zhao,Theeranun Siritanon,M.A. Subramanian,Peng Jiang
To alleviate the urban heat island effect, reduce building energy consumption and improve the living environment for residents, the development of highly reflective pigments and coatings is of great significance for sustainable development. In this study, Mg 2.4- x Cr x TiO 4.4+δ (0.1 ≤ x ≤ 0.3) and Mg 2.4- x Co x TiO 4.4 (0.1 ≤ x ≤ 0.4) pigments with intense green/sky blue colors were successfully synthesized through solid state method. The crystal structure, color development mechanism and optical properties of as-synthesized samples are analyzed. The as-prepared pigments demonstrate excellent NIR reflectance with the highest solar reflectance up to 83%. Furthermore, the color coatings with high NIR solar reflectance were successfully prepared by mixing the pigments with acrylic resin. A solar reflectance of 69.81% is achieved among the green/blue coatings. The thermal shielding effect of the coatings in practical applications was tested through chamber simulation experiments. The test temperature of the prepared coating was 8.8 ℃ lower than that of the blank stainless steel plate after radiating with a 250 W infrared lamp for 30 minutes, which proved its good heat insulation performance. Through pickling and alkali washing experiments, the color coordinates of the coatings are very stable, indicating the excellent acid-base resistance in the practical applications.
研究领域:
材料科学
·
无机化学
·
光学性能
·
建筑节能
·
可持续发展
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2015
·Vol. 3
·期 9
·2086-2092
·
IF 4.696
Lianyi Xu,Faqin Tong,Xuemin Lu,Kai Lu,Qinghua Lu
A fluorescent and robust superhydrophobic coating based on a fluorinated polypyrene/silica hybrid (FPSH) film was reported. This hybrid film is composed of an underlying polypyrene film and overlying silica layers. The polypyrene film is electrodeposited on an indium tin oxide glass electrode by cyclic voltammetry to provide a petal-like hierarchical rough structure and strong fluorescence with one-step electrochemical polymerization. Notably, the fluorescence emission of this polypyrene film derives from the excimer forms, reported here for the first time. The silica layers are fabricated by a two-step chemical vapor deposition to obtain a supporting silica backbone and a low-energy surface. Several critical tests were performed on the FPSH films, confirming that the film is not only a thermally stable, anti-acid/alkali, and anti-impact self-cleaning surface, but also presents a strong green fluorescence emission.
研究领域:
材料科学
·
表面工程
·
荧光材料
·
电化学
·
纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）