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Recent Advances in Fibrous Materials for Hydroelectricity Generation

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Nano-Micro Letters 2025年第2期17卷 109-133页

作者： Can Ge Duo Xu Xiao Feng Xing Yang Zheheng Song Yuhang Song Jingyu Chen Yingcun Liu Chong Gao Yong Du Zhe Sun Weilin Xu Jian Fang College of textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

Solution blow spinning mass production of mullite nanofiber from environment friendly aqueous Al–Si solutions

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Progress in Natural Science:Materials International 2023年第5期33卷 691-700页

作者： Xinpeng Jin Jiugang Li Chi Zhang Keshuai Liu Chong He Wenbin Li School of textile Science and Engineering Wuhan Textile University State Key Laboratory of New textile Materials and Advanced Processing Technologies Wuhan Textile University

Achieving large-scale production of high-performance mullite ceramic nanofibers posed a formidable ***, an air heating-solution blow spinning technique was designed for the mass fabrication of mullite nanofibers at high speeds, ranging from 6 to 60 ml/h. Spinnable aqueous Al–Si solution systems, employing various aluminum sources, were systematically investigated. The optimization of the solution blow spinning apparatus involved the incorporation of a hot air blow device capable of dispensing streams of hot, dry air. Comprehensive investigations were conducted to examine the impact of variables such as spinning solution viscosity, spinning rate, and spinning distance on the resulting mullite fiber diameter and morphology. Following sintering at 1200°C, mullite fiber cotton was successfully synthesized, exhibiting diameters spanning from 500 nm to 5 μm. These mullite nanofiber cotton demonstrated exceptional attributes, including robust temperature stability(up to 1300°C), remarkable thermal insulation properties and superior filtration efficiency.

关键词： Solution blow spinning Mullite nanofiber Aqueous solution Thermal insulation

Blow spinning mass production of melamine@polyacrylonitrile composite nanofibers with enhanced flame-retardant and strengths

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Progress in Natural Science:Materials International 2023年第5期33卷 634-643页

作者： Jiahao He Wenlu Zhang Xinpeng Jin Chong He Wenbin Li School of textile Science and Engineering Wuhan Textile University State Key Laboratory of New textile Materials and Advanced Processing Technologies Wuhan Textile University

To achieve the scalable production of high-performance melamine-based flame retardant nanofibers, solution blowing spinning technology was employed into the continuous spinning of melamine(MA)@polyacrylonitrile(PAN) composite fibers. Propelled by the compressed air current, spinnable MA@PAN solutions can be shaped into nanofiber with a high flow rate over 50 m L/h. Among different melamine-based materials,melamine phosphate(MPP) exhibited excellent solubility in the solution, exceeding 30 wt%, ensuring that the MPP@PAN nanofiber products demonstrated exceptionally robust flame-retardant performance. Furthermore,through fiber textile needle punching technology, loose fiber sponge can be organized into enhanced fiber blankets. These MPP@PAN nanofiber products exhibited outstanding flame retardant and thermal insulation properties, rendering them pivotal as the flame-retardant materials in extreme environments.

关键词： Composites Flame retardance Nanofibers High temperature materials Mechanical properties

A comparison between Ce(Ⅲ) and Ce(Ⅳ) ions in photocatalytic degradation of organic pollutants

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Journal of Rare Earths 2015年第3期33卷 249-254页

作者：程强施薇段炼孙彬哲李晓霞徐爱华 School of Environmental Engineering Wuhan Textile University School of Chemistry and Chemical Engineering Wuhan Textile University

Nano cerium oxides are efficient photocatalysts for pollutants degradation with highly dispersed Ce（III） ions as the suggested active species to promote the reaction, while Ce（IV） species do not behave as a catalyst. In this paper, to understand the mechanism of Ce-based photocatalysts, we studied the comparison of simple cerium ions, Ce（III） and Ce（IV） in aqueous solution for organic pollutants degradation under UV irradiation. Orange II（AOII）, methyl orange, and p-nitrophenol were selected as the target pollutants. The formation and contribution of reactive oxygen species, the kinetics of Ce（IV） photoreduction and Ce（III） photooxidation, and the influence of solution p H were investigated in detail. It was found that at low p H Ce（IV） ions showed a higher activity for hydroxyl radicals production and AOII degradation than Ce（III） ions, which could be attributed to its fast reduction rate to Ce（III）. However, its activity dramatically decreased when solution p H increased, and was also strongly influenced by the type of pollutants; while Ce（III） exhibited high degradation efficiency of all the tested pollutants over a wide pH range.

关键词： cerium ions photodegradation hydroxyl radical organic pollutants rare earths

Preparation of Chiral Silica Nanostructures with Radial Pores through Single-templating Approach

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Journal of wuhan university of Technology(Materials Science) 2023年第6期38卷 1293-1298页

作者： ZHA Xinlin FAN Hui CHEN Yuanli Key Laboratory of textile Fiber and Products(wuhan textile university) Ministry of EducationWuhan 430073China

A chiral low-molecular-weight gelator(LMWG) L-16Ala5PyPF6 was synthesized from L-alanine, which can cause physical gel in n-propanol, ethyl acetate, butylene oxide, water, benzene, 1,4-dioxane and chloroform. The sol-gel reactions were carried out in a mixture of stronger ammonia water and n-propanol at the volume ratio of 2:8. Single-handed twisted silica nanostructures with pore channels vertical to the wall surfaces were first prepared through a single-templating approach comparing with the reported double template method. The formation mechanism of radial pore structure was studied by transmission electron microscopy at different reaction time intervals, which indicated that the radial pore structure was formed via a structural transition in the sol-gel transcription process.

关键词： sol-gel preparation radial pores vertical pore channels single-handed structural transition

Activation of sulfite by metal-organic framework-derived cobalt nanoparticles for organic pollutants removal

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Journal of Environmental Sciences 2023年第2期124卷 350-359页

作者： Xianjie Feng Deming Wu Xueyi Shen Yu Guo Yangyang Lv Aihua Xu Xiaoxia Li Hubei Key Laboratory of Biomass Fibers and Eco-dyeing and Finishing Wuhan Textile UniversityWuhan 430200China School of Chemistry and Chemical Engineering Wuhan Textile UniversityWuhan 430200China School of Environmental Engineering Wuhan Textile UniversityWuhan 430200China

Sulfite(SO_(3)^(2−))activation is one of the most potential sulfate-radical-based advanced oxidation processes,and the catalysts with high efficiency and low-cost are greatly *** this study,the cobalt nanoparticles embedded in nitrogen-doped graphite layers(Co@NC),were used to activate SO32−for removal of Methyl Orange in aqueous *** Co@NC catalysts were synthesized via pyrolysis of Co^(2+)-based metal-organic framework(Co-MOF),where CoO was firstly formed at 400℃ and then partially reduced to Co nanoparticles embedded in carbon layers at 800℃.The Co@NC catalysts were more active than other cobaltbased catalysts such as Co^(2+),Co_(3)O_(4) and CoFe_(2)O_(4),due to the synergistic effect of metallic Co and CoxOy.A series of chain reaction between Co species and dissolved oxygen was established,with the production and transformation of SO_(3)•−,SO_(5)^(2−),and subsequent active radicals SO_(4)•−and HO•.In addition,HCO_(3)−was found to play a key role in the reaction by complexing with Co species on the surface of the *** results provide a new promising strategy by using the Co@NC catalyst for SO3_(2)−oxidation to promote organic pollutants degradation.

关键词： Sulfite activation Co-MOF(Co^(2+)-based metal organic frameworks) Nitrogen-doped carbon Bicarbonate Sulfate radical

A scalable versatile methodology to construct micro/nano open-cell polypropylene foam with high oil adsorption capacity and speed

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Nano Research 2024年第4期17卷 2814-2823页

作者： Chenguang Yang Dechang Tao Kun Yan Zhiyao Li Qingshi Guo Wenwen Wang Dong Wang Key Laboratory of textile Fiber and Products(wuhan textile university) Ministry of EducationWuhan Textile UniversityWuhan 430200China College of Chemistry Chemical Engineering and BiotechnologyDonghua UniversityShanghai 201620China

Oil pollution is a serious environmental and natural resource *** adsorption materials for oil–water separation have limitations in terms of their preparation cost,reusability,and mechanical *** the conventional adsorption materials,super-hydrophobic/super-lipophilic materials are easily contaminated by *** this study,polypropylene(PP)is used as a foam substrate to prepare an open-cell PP foam via hot pressing,supercritical CO_(2) foaming,and electron beam(EB)*** impact of EB irradiation dose on the open-cell content of PP foam can lead to cell wall rupture,resulting in an open-cell structure that enhances oil-water separation *** an absorbed radiation dose of 200 kGy,the PP foams exhibit optimal oil–water separation performance,cyclic compression stability,heat insulation,and preparation *** open-cell content of PP foam is increased to 86.5%,the adsorption capacity for diesel oil is 42.8 g/g,and the adsorption efficiency remains at 99.6%after 100 cycles of oil desorption in a complex pH ***,cracks and nano-voids simultaneously promote the capillary action of oil,and the oil transport rate is 0.0713 g/(g·s).This study provides a new concept for the preparation of open-cell polymer foams that can meet the demand for high oil-absorption capacity under complex acid-base pH conditions.

关键词： open-cell polypropylene(PP)foam electron beam irradiation oil/water separation cyclic compression complex acid-base pH conditions

Activated carbon fiber mediates efficient activation of peroxymonosulfate systems:Modulation of manganese oxides and cycling of manganese species

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Chinese Chemical Letters 2023年第12期34卷 275-280页

作者： Lixi Xiao Yuwei Deng Huo Zhou Fengjun Lu Chong Ke Yuxuan Ye Xuanyuan Pei Dongsheng Xia Fei Pan School of Environmental Engineering Wuhan Textile UniversityWuhan 430200China State Key Laboratory of New textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200China

Manganese oxides show a strong catalytic activity in the peroxymonosulfate(PMS)advanced oxidation process but have poor chemical stability and a propensity to cause the aggregation of ***,a novel composite material(abbreviated as MnO_(x)@ACF)was synthesized,characterized,and *** carbon fiber(ACF)was selected as a carrier,which modulated the composition of manganese *** results showed that MnO_(x)@ACF had a strong adsorption ability and successfully activated PMS to degrade tetracycline hydrochloride(TCH),with a removal eficiency of 89.0%in 30 *** factors such as pH and coexisting ion species were investigated,and a five-cycle test was *** oxygen(^(1)O_(2))was predominated in the MnO_(x)@ACF/PMS system.A possible explanatory pathway of TCH was proposed based on the results of the high performance liquid chromatography-mass *** was concluded that this study provides a novel insight into the activation of PMS for the degradation of organic matter by carbon-loaded multivalent manganese oxides.

关键词： Activated carbon fiber Mn_(3)O_(4) MnO_(2) Singlet oxygen

Effect of Polyvinyl Alcohol in Inner Aqueous Phase on Stability of Millimeter-scale Capsules

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Journal of wuhan university of Technology(Materials Science) 2024年第2期39卷 506-511页

作者：黄乐平 LI Shidong ZHANG Jiabei PAN Chenchen 赵瑾朝 School of Material Science and Engineering Wuhan Textile UniversityWuhan 430200China Hubei Provincial Engineering Laboratory for Clean Production and High Value Utilization of Bio-Based textile Materials Wuhan Textile UniversityWuhan 430200China

The millimeter-scale capsules with controllable morphology,ultra-low permeability and excellent mechanical stability were fabricated by *** of inner phase was adjusted to control the morphology and properties of the *** detail,as the concentration of polyvinyl alcohol(PVA)increased from 0 to 8% in the inner phase of the capsules,the diameter of capsules decreased from 3.33 ± 0.01mm to 2.97 ± 0.01 mm,the shell thickness of capsules decreased from 0.183 ± 0.004 mm to 0.155 ± 0.003 *** the capsules had round shape and high ***,the capsules with 2% PVA in the inner phase had remarkably decreased water permeability and good morphological ***,the end-time of water losing of the capsules was up to 49 days,while the dehydrated capsules maintained spherical appearance,and crushing force of the capsules was up to 13.73 ± 0.79 N,which ensured stability during processing and *** research provides a new strategy for stable encapsulation of small molecules.

关键词： capsule millimeter-scale millifluidics polyvinyl alcohol viscosity