Journal of Materials Chemistry A
·
2024
·
IF 10.7
Busaremu Wulayimujiang,Fang Guo,Qianyu Ma,Yong Wen,Yang Yang,Hongyan Huang,Quanpei Xie,Meng Shen,Jinxin Liu,Si Cheng
Even though membrane separation materials have worked very well for purifying dyestuff wastewater, the short residence time and high pollutant flow rates in the membrane, which can lead to incomplete or insufficient photodegradation, make it currently difficult to separate and photodegrade large-scale or highly concentrated dyestuff wastewater in one step. Herein, we propose an ‘all-in-one’ 3D nanofibrous aerogel architecture (aPAN/MXene@Ag–Ag2S), which can achieve efficient purification of high-concentration dyeing effluents under natural sunlight via two methods: filtration or solar interfacial evaporation. Ag–Ag2S nanoparticles with two different structures are reduced on Ti3C2Tx nanosheets through a UV light-induced in situ reaction, and they function as effective photocatalysts with excellent photothermal ability for solar interfacial evaporation. The special combination of Ag–Ag2S, MXene, and aPAN nanofibers in the aPAN/MXene@Ag–Ag2S aerogels achieved 95% separation and 99.99% photocatalytic degradation efficiencies for oil/water emulsions with methylene blue at a high concentration of 1000 mg L−1, which far exceeds those of recently reported MXene-based catalysts. In particular, wastewater from industrial dyeing could be treated to clean water under natural sunlight. In addition, the evaporation rates of the aPAN/MXene@Ag–Ag2S aerogel for seawater and textile dye wastewater respectively reach 2.69 kg m−2 h−1 and 2.44 kg m−2 h−1 and almost 100% degradation efficiency is achieved. Both the filtered fresh water and the evaporated water produced by solar evaporation meet the requirements of the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant or the World Health Organization (WHO) and the US Environmental Protection Agency (EPA) standards for drinking water, respectively.
研究领域:
环境科学
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材料科学
·
水处理
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光催化
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Xu Zhao,Rongcheng Du,Xuelian Chen,Xiangyue Wei,Yuwei Long,Xuehui Liu,Li Chen,Shimei Xu,Yu-Zhong Wang
High-efficiency and energy-saving conversion of epoxy thermosets into "three-high" (high value, high quality and high performance) products is highly desired from the viewpoints of both environmental protection and resource utilization. Here, we demonstrate a new strategy for mild degradation of epoxy thermosets and in situ preparation of polyurethane foam from degradation solutions. The degradation solution contains the unreacted solvent polyethylene glycol and polyol degradation products after alcoholysis, both of which can react with isocyanate to produce polyurethane. The use of an insoluble catalyst makes it possible to achieve in-situ foaming of the degradation solution, which realizes the direct and full utilization of degradation products. Owing to the rigid epoxy skeleton of the degradation products, the obtained rigid polyurethane foam exhibited high mechanical properties (∼170kPa), good thermal insulation performance (33–35 mW•m −1 •K −1 ), low water absorption (3–5%), regular pore structure and good thermal stability, thus can be a good candidate for building insulation materials.
研究领域:
材料科学
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环境科学
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化学工程
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可持续发展
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Mengdi Hao,Wanqiu Huang,Bin Feng,Mengjing Teng,Chuanfan Ding,Hao Shen,Shaoning Yu,Li Wang
A lack of rapid and dependable microbial identification platforms, as well as insufficient or overdue microbiological surveillance and corresponding resolutions implemented in clinical diagnosis and treatment, agricultural production, and the food industry, can seriously harm human health and reduce productivity in the food industry. Here, a two-dimensional Ni–Co bimetallic metal–organic framework nanozyme (2D-NCM) is prepared for the rapid and efficient discrimination of microbes including clinical pathogens and brewing fungi. The nanozyme 2D-NCM, which is synthesized via a facile layered double hydroxide in situ transformation strategy, exhibits enhanced peroxidase-like activity. The biocatalytic activity of 2D-NCM could be altered to different degrees via different interactions between 2D-NCM and microbes. By selection of diverse compositions of absorbance at different time points, the sensing unit, 2D-NCM, could provide multichannel information for microbial identification. The nanozyme-based platform prevents the tedious synthesis of multiple biosensing receptors and the demand for complicated operation/precise devices, resulting in lower cost, quicker response (within 0.5 h), higher throughput, and simpler handling without washing procedures. This study provides an alternative strategy to construct practicable, facile, and flexible MOF nanozyme based biosensing arrays for the identification of microbes, making an active contribution toward precision medicine, food safety, and environmental protection.
研究领域:
纳米技术
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生物技术
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分析化学
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微生物学
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材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2022
·Vol. 30
·期 1
·611-624
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IF 6.123
Ke Guizhen,Mulla Mujammil Salim,Peng Feifan,Chen Shuhui
With the enhancement of awareness of environmental protection, the green natural dyes gradually come into people’s view again. This subject studied the dyeing performance of natural dye Gardenia on tannic acid modified lyocell fabric. The effect of tannic acid concentration, pH of dyeing solution, dyeing time and dyeing temperature on k/s value and colorimetric data (L*, a*, b*, c*) of the dyed lyocell fabric was investigated. The results showed the color strength and yellowness value increased with the increase in dyeing time (within 60 min), dyeing temperature and tannic acid concentration and the decrease in pH value of dye bath. The dyeing process was optimized by response surface analysis. The experimental results showed that the linear effects of dyeing pH, dyeing temperature and tannic acid concentration on the K/S values of the dyed lyocell fabrics were extremely significant. The results of X-ray diffraction, electron microscopy scanning, fourier transform infrared spectroscopy and water contact angle measurements showed that the morphological structure of the tannic acid-treated dyed lyocell fabrics did not change. The results of practical validation and optimization showed that the optimal process of tannic acid pre-mordanting natural dyes Gardenia dyed lyocell fabric was: dyeing time 60 min, dyeing pH = 3.5, dyeing temperature 90 °C, and the measured K/S value of the dyed specimen under this condition was 7.45. Its color fastness to washing and rubbing was above 3. The successful combination of bio-mordant tannic acid and natural dye Gardenia yellow on lyocell fabric provided a green dyeing method for lyocell fiber.
研究领域:
纺织科学
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环境科学
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材料科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2015
·Vol. 133
·期 3
·
IF 1.768
Lei Zhang,Yingjie Cao,Lei Wang,Lu Shao,Yongping Bai
In the area of pressure sensitive adhesives (PSAs), corona treatment or other preprocessing on the carrier was commonly utilized for the enhancement of the interaction between the adhesive layer and the carrier, with complicated procedures and operations. To make it easy, one-pot emulsion polymerization using n-butyl acrylate, isobornyl methacrylate (IBOMA), 2-hydroxyethyl acrylate and acrylic acid was conducted in the presence of a reactive emulsifier SR-20 to obtain a reinforced adhesive tape. First, the emulsion had good stabilities, especially freeze-thaw stability, which was helpful to the fabrication of PSAs. Second, IBOMA increased the binding strength between adhesive layer and adherend. The properties of the final tapes well fulfilled the requirements of this areas, such as that the 180° peel strength of 125.9 N/m when coated on non-corona surfaces, the tack of 19 #, and the shear holding time of more than 100 h. Third, the tapes produced using the above emulsion could be removed many times, with no PSAs residue on the adherend even when coated on untreated PP, which showed the potential of recycling and environmental protection. Thus, these properties make the polyacrylate emulsion have great potential for practical applications. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 42886.
研究领域:
材料科学
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高分子化学
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胶粘技术
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Jun Bao,Yujia Tang,Hong Nie,Xiaofei Zeng,Qinghe Yang,Shuangqin Zeng,Xiaoyi Sang
Amorphous silica–alumina (ASA) is widely used in chemical industries due to its unique structure and Brønsted acidity. In this study, mesoporous ASA with obviously enhanced Brønsted acidity was synthesized by high-gravity technology. With the increase of Si/Al ratio, the fraction of tetra-coordinated aluminum (AlIV) in the ASA precursors and the concentration of Brønsted acid sites (CBAS) of ASA gradually increased. It was also found that the high-gravity technology could increase CBAS by over 76% compared to the conventional stirred tank reactor at the same Si/Al ratio. This enhanced Brønsted acidity is primarily due to the powerful mixing effect of the rotating packed bed reactor, which facilitates the formation of Si–O–Al bonds and AlIV through a more uniform distribution of silicon and aluminum. Finally, the relationship between the acidity of ASA and its catalytic activity for plastic degradation was investigated. ASA was found to significantly reduce the degradation temperature of polyethylene, polypropylene, and polycarbonate. The polyethylene degradation experiment also showed that increasing the CBAS can effectively improve the pyrolysis activity. This high-performance ASA prepared by a high-gravity technology is expected to be used in catalysts for petrochemical and environmental protection applications.
研究领域:
材料科学
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催化化学
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化学工程
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环境保护
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高分子化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2021
·
IF 3.423
Shujun Chen,Yang Liu,Siyi Chen,Guanglian Zhao,Yuanhui Wu
Novel triazole ultraviolet absorbers (2HBTF) with surface enrichment performance were synthesized and characterized, showing effective protection for substrate surfaces from ultraviolet rays and environmentally friendly behaviour. The enrichment properties of 2HBTF in coating surfaces were detected by X-ray photoelectron spectroscopy, contact angle measurements and longitudinal sections. The results indicated that 2HBTF are mainly distributed in coating surfaces, showing hydrophobic films. Coatings with different UVAs were examined using artificial accelerated UV-ageing test, and the results show that the anti-ultraviolet light (UV) ageing property of coatings is affected by the distribution of these UVAs.
研究领域:
材料科学
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化学工程
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环境保护
✓ 已验证
DOI
高影响因子
Polymers
·
2025
·Vol. 17
·期 9
·1169
·
IF 4.9
Xue Zheng,Yongjin Zou,Cuili Xiang,An Wei,Yuhong Wei,Lixian Sun
Recent research has focused on developing environmentally friendly flame-retardant coatings to improve the fire resistance of wood. In this study, phytic acid–guanazole (PG), a dual-functional compound synthesized through an ionic reaction between phytic acid and guanazole, was added to KH550-modified urea–formaldehyde resin (KUF) as both a curing agent and flame retardant. The−PO43−groups from phytic acid act as an acid source to accelerate char formation during combustion, while the −NH2groups introduced by guanazole release non-combustible gases to dilute oxygen in the air, synergistically enhancing flame retardancy. Additionally, the hygroscopic−PO43−groups absorb free water in the resin, reducing the curing temperature and accelerating coating solidification. The KH550 coupling agent improves compatibility between KUF and PG while introducing silicon, which forms SiO2during combustion to strengthen the char layer and further enhance flame resistance. Evaluations showed that PG outperforms conventional tannic acid (TA) in curing efficiency and fire resistance. Comprehensive analyses, including Differential Scanning Calorimetry (DSC), Limiting Oxygen Index (LOI), vertical flame tests, and cone calorimetry, confirmed PG’s dual functionality. Scanning Electron Microscope (SEM) and Raman spectroscopy revealed that PG-modified coatings form denser post-combustion char layers, directly linked to improved fire resistance. As a multifunctional additive, PG eliminates the need for separate curing agents and utilizes bio-based phytic acid, offering cost-effective and sustainable advantages for industrial applications.
研究领域:
材料科学
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化学工程
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环境保护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 71
·45034-45044
·
IF 3.108
Yajun Deng,Weibin Bai,Jipeng Chen,Xinmei Zhang,Shenji Wang,Jinhuo Lin,Yanlian Xu
Protective corrosion coatings are preferably composed of available, environmentally friendly, and low-volatility organic compounds. Herein, new excellent corrosion graphene/raw lacquer composite coatings were formed, in which waterborne graphene was modified by taking lignin tripolymer (LT) as an aqueous stabilizer and subsequently adding to raw lacquer (RL). Graphene/lacquer composite coatings were achieved by an eco-friendly fabrication process. The structure and thermostability of the lignin derivative were studied by Fourier transform infrared spectroscopy (FT-IR) and thermogravimetry (TG), respectively, while the composition of the LT was characterized by Raman spectrometry. And the experimental result revealed that LT was an effective graphene dispersant (LTG) up to 60 d without any precipitation. Besides, the SEM of the graphene/lacquer coatings revealed that the excellent protection properties were highly attributable to the formation of a very rough surface, because of the highly dispersed nature of the graphene nanoparticles. Also, the corrosion behavior of the composite coatings on a metal substrate were studied by polarization curve analysis and electrochemical impedance spectroscopy (EIS). According to the electrochemical corrosion tests, the lacquer composite coating with 5 wt% LTG dispersion (RL/LTG-5, containing 0.3 wt% graphene) possessed excellent corrosion resistance, making it suitable for protecting bare metal substrates.
研究领域:
材料科学
·
电化学
·
环境保护
✓ 已验证
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Gaoyuan Li,Hongbo Zhao,Yuling Wang,Qingrui Liu,Wenbo Sun,Biyu Huang,Haopeng Zhang,Jirui Qu,Weijian Liu,Xilei Chen,Chuanmei Jiao
The development of adsorbent materials capable of withstanding harsh environmental conditions remains a significant challenge. In this study, a novel flexible polyurethane (FPU) sponge composite (PU@BTC-Abz@Si) was successfully fabricated with outstanding flame retardancy, mechanical robustness, and oil-water separation performance. This was achieved by constructing micro-nano structures on the surface of FPU sponge by in situ self-assembly of dendrimers with π-π stacking interactions, and subsequent grafting with polydimethylsiloxane (PDMS). Notably, the synthesis was accomplished without the incorporation of phosphorus or metal-based flame retardants. Instead, PU@BTC-Abz@Si utilizes a flame-retardant strategy based on π-π stacking, imparting fire safety while minimizing secondary environmental pollution. Compared with pristine FPU sponge, PU@BTC-Abz@Si demonstrated significant reductions in total heat release (THR), total smoke production (TSP), and total carbon monoxide production (TCOP) by 55.4%, 51.9%, and 64.9%, respectively. Furthermore, PU@BTC-Abz@Si exhibited enhanced mechanical stability and high oil-water selectivity. This work offers a sustainable and efficient approach to enhance the functional performance of FPU sponge, with promising implications for environmental protection and fire-safe engineering applications.
研究领域:
材料科学
·
化学工程
·
环境保护
·
消防安全工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2025
·
IF 2.6
Liu Jian,Cheng Wei,Tian Shifu,Tang Liming,Tang Zhipeng,Wang Binbin,Li Chunsun,Jin Yuran,Wang Ming,Li Yuanyuan,Liu Xiangjun,Wang Ji
The recycling of spent LiFePO 4 is of great significance for the sustainable development of the battery industry and environmental protection. In this paper, a multifunctional organic lithium salt was used to repair spent LiFePO 4 in one step. As an inexpensive organic lithium salt, lithium ascorbate can not only serve as a Li supplement but also as a carbon source, achieving both Li supplementation and carbon coating simultaneously. The reducibility of lithium ascorbate can reduce Fe 3+ in spent LiFePO 4 to Fe 2+ , reducing the concentration of Li/Fe anti-side defects. At the same time, lithium ascorbate can also be used as a carbon source to realize carbon coating on spent LiFePO 4 in annealing engineering to improve its conductivity. The R-LFP displays a discharge capacity of 154 mAh g −1 at 0.5 C, compared to 130 mAh g −1 for S-LFP. After 450 cycles, R-LFP retains 91.3% of its capacity, outperforming S-LFP at 80.3%. The method can repair the spent LiFePO 4 through a simple one-step annealing method, which has a short process, high efficiency, and large application prospects.
研究领域:
电池回收
·
材料科学
·
电化学
·
环境保护
·
可持续发展
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Qingqing Zhang,Songyu Zhang,Ren Liu,Jing Luo
Despite significant advances in anti-icing/de-icing coating in recent years, key issues such as lubricant leakage and high de-icing energy consumption still substantially restrict their long-term performance in cold environments. To address this, a long-lasting lubricating coating based on silicone oil-loaded polyaniline (PANI) microspheres is developed. Through innovative structural design and regulation, PANI microspheres achieved “three birds with one stone” effect: photothermal conversion, electrothermal conversion, and lubricating properties. Benefiting from the storage capacity and photothermal conversion of PANI microspheres, the coating could achieve the continuous release of the lubricant under near infrared (NIR) light irradiation, thereby promptly replenishing the lubricating layer. Even after multiple washing-NIR cycles, the coating still retained a low sliding angle (< 10°), highlighting its self-replenishing capability and enabling long-term lubrication. Furthermore, the presence of lubricants imparted long-term antifouling performance to the coating. Additionally, the photothermal and electrothermal conversion capabilities of PANI microspheres endowed the coating with highly efficient de-icing performance. Notably, the coating incorporating 20 wt.% PANI microspheres achieved rapid ice melting within just 7 s under the synergistic effect of NIR light and voltage. This work provided coatings with long-term anti-icing and high-efficiency deicing property, making it suitable for practical use in aerospace, transportation, power facilities, etc.
研究领域:
材料科学
·
表面工程
·
热管理
·
涂层技术
·
环境保护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）