Journal of Environmental Sciences
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2023
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IF 6.9
Sijie Zhou,Na Zhu,Pei Lyu,Chunhua Zhang,Zhuan Fu,Junyao Gong,Zhaozixuan Zhou,Liangjun Xia
Semiconductor heterojunction engineering and three-dimensional (3D) architecture construction have been considered highly desirable strategies to enhance photocatalytic performance. Herein, a BiOI/ZnO composite photocatalyst with a 3D flower-like architecture was successfully prepared, which was stably immobilized on three-dimensional porous lignocellulosic biomass Juncus effusus (JE) fiber. The outstanding photocatalytic performance of the BiOI/ZnO-JE fiber was confirmed by the degradation of tetracycline hydrochloride (TC, 90%), ciprofloxacin (CIP, 79%), and norfloxacin (NOR, 81%). The enhanced photocatalytic activities were mainly attributed to the synergistic absorption performance of the lignocellulosic JE and the effective transfer and separation of charges. Moreover, the hydroxyl (·OH) and superoxide radicals (·O 2 − ) are the main reactive species in the photocatalytic process according to the analysis. This work may provide a novel perspective for constructing high-performance lignocellulosic-based photocatalytic materials.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2023
·
IF 5.9
Rui Xi,Jiayan Zhou,Beibei Jiang,Qi Zhang,Kunkun Zhu,Weilin Xu,Dengpeng Song
Biomass adsorbents have received extensive attention for the removal of heavy metals , but most of them had very limited adsorption capacity or needed to be modified with environmentally unfriendly chemicals to achieve acceptable performance. In this study, a green biomass adsorbent was fabricated using an abundant natural cellulosic Juncus effusus (JE) fiber and natural melanin polydopamine (PDA) through a simple mussel-inspired polymerization strategy. JE's unique hollow three-dimensional network structure provided an ideal scaffold substrate with abundant sites for dopamine polymerization deposition. This enabled the modified PDA@JE fibers to be rich in amino, hydroxyl, and other active adsorption sites, thereby endowing the PDA@JE fiber adsorbent with a promising Cr (VI) adsorption capacity of up to 145.8 mg / g. This capacity was significantly higher than that of most previously reported biomass-based adsorbents. Furthermore, 10–20 times the concentration of common interfering ions such as Ca 2+ , Cd 2+ , Cu 2+ , NO 3 - , Cl - , SO 4 2- and PO 4 3- had little effect on the adsorption efficiency. This study provided a green and general mussel-inspired strategy for preparing effective biomass adsorbent, offering a promising approach for utilizing natural cellulosic fibers in eco-friendly applications.
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DOI
高影响因子
CARBOHYDRATE POLYMERS
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2020
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IF 7.182
Zhuan Fu,Sijie Zhou,Liangjun Xia,Yunshan Mao,Liyun Zhu,Yunqi Cheng,Aming Wang,Chunhua Zhang,Weilin Xu
Polycyclic aromatic hydrocarbons (PAHs) from cigarettes are one of the main pollutants affecting public health. Herein, a cellulose cigarette filter with three-dimensional (3D) hierarchically porous structure was fabricated using a natural cellulose Juncus effusus (JE) fiber, whose pore size was well controlled by biocompatible polyvinylpyrrolidone (PVP) using a simple dip-dry method. The adsorption capacity and mechanism of the PVP–JE filter tips (PJF) against PAHs were investigated in detail. Compared with conventional cellulose acetate filter tips (CAF), the cellulose PJF were superior at filtering and adsorbing of PAHs from mainstream smoke with the removal efficiency of 61.79 %, which was 22.57 % higher than that of CAF (39.22 %). The ternary structures including polymer filter membrane, 3D network, and interconnected channels were demonstrated as the main roles for highly effective removal of PAHs. The JE-based cellulose cigarette filter can be a promising candidature to broaden the application range of polysaccharide in pollutant elimination.
研究领域:
环境科学
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公共卫生
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材料科学
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DOI
高影响因子
Journal of Cleaner Production
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2021
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IF 9.297
Bowu Zhao,Luyao Ren,Jianyou Wang,Huixia Lu,Lan Hao
Oily wastewater and oil spills have adverse impacts on aquatic ecosystems and even the human environment. Developing highly efficient nonfluorinated superoleophilic separation materials for oil/water separation is urgently needed. Herein, a natural Juncus effusus pith was directly used as a raw material to prepare novel separation columns via a facile compression strategy. The pith possessed natural superoleophilicity (oil contact angle almost 0°) with inherent oleophilic properties and regular multilayer, porous, network structure. These pith characteristics endowed related separation columns with superior oil selectivity . The pore size of the prepared columns was controlled by adjusting the degree of compression. In this strategy, the separation efficiency the column reached up to 99.99 and 97.7% for eight types of oil/water mixtures and surfactant-stabilized emulsions under gravity, respectively. After repeated column recycling, these columns retained excellent separation performance and the separation mechanism was investigated. No new pollutants and hazardous substances were introduced into the environment in column fabrication and separation processes. Therefore, this study provided the basis for an ecofriendly, low-cost, and scalable strategy for reasonable utilization of natural biomaterials with superoleophilicity, thus exhibiting great potential for the rapid treatment of oil spillage and industrial oily wastewater.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Journal of Cleaner Production
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2020
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IF 7.246
Liangjun Xia,Sijie Zhou,Chunhua Zhang,Zhuan Fu,Aming Wang,Qian Zhang,Yunli Wang,Xin Liu,Xungai Wang,Weilin Xu
The increasing contamination of water from textile dyes is one of the major environmental problems facing humanity, which has stimulated extensive investigation of fabricating adsorbents with high removal efficiency and excellent adsorption capacity towards textile dyes. Nature has engineered some intriguing high-performance materials that may be excellent sustainable materials for water purification use. Herein, we report a novel Juncus effusus (JE)-based adsorbent with a three-dimensional network structure and interconnected channels for dye removal from wastewater. To further enhance its adsorption capacity towards textile dyes, the biodegradable chitosan (CS) was employed for the chemical modification of the JE fiber. The results showed that the CS–JE fibers exhibited a high adsorption capacity towards three types of anionic dyes at the temperature of 296 K: 526.3 mg g −1 for C.I. Acid Yellow 11 (AY11), 452.5 mg g −1 for C.I. Reactive Red 195 (RR195), and 255.1 mg g −1 for C.I. Direct Blue 15 (DB15), which outperforms most of the reported CS-modified adsorbents. The Langmuir model satisfactorily fitted the equilibrium adsorption curves of the CS–JE fibers. Throughout the kinetics studies , the adsorption fitted well with the pseudo-second-order model and exhibited a two-stage of intraparticle diffusion, indicating the adsorption of the investigated dyes onto the CS-JE fiber is rather complex that both the external surface adsorption and intraparticle diffusion occurred simultaneously. Finally, taking advantage of the specific 3D network structure and interconnect channels of the CS-JE fiber, a vertically oriented CS–JE cake was fabricated using CS–JE fibers for continuous filtration of dyes from wastewater. The cake exhibited high flow flux and rapid filtration performance under continuous flow without requiring additional pressure. The present work confirmed that the CS-JE composite can be a promising candidate for wastewater treatment .
研究领域:
环境科学
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材料科学
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DOI
高影响因子
GREEN CHEMISTRY
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2022
·Vol. 24
·期 12
·4812-4823
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IF 11.034
Zhuan Fu,Sijie Zhou,Liangjun Xia,Chunhua Zhang,Na Zhu,Junyao Gong,Xiaofeng Wang,Xin Liu,Li Li,Weilin Xu
Ethanol (EtOH)–water (H2O) mixture, as an environmentally friendly organic solvent, has been widely used in green textile dyeing technologies to reduce water consumption. However, it is essential to develop a sustainable and energy-saving approach for the recovery of the EtOH–H2O mixture to mitigate the global energy crisis. Herein, inspired by the transpiration process of a tree, we designed a bilayer structured solar energy-driven recovery device composed of a solar absorption layer and a liquid transport layer using the lignocellulosic biomass Juncus effusus (JE) and carbon nanotubes (CNTs). Benefiting from the structural design and distinct properties of the 3D hierarchically porous JE fibres, the as-prepared device exhibited an excellent light absorbability (>95.90%) and photothermal conversion capability, and was further used to purify the dye-contaminated EtOH–H2O mixture by steam generation from solar energy. By using this stable recovery device, the evaporation rate towards the EtOH–H2O mixture was up to 2.43 kg m−2 h−1 under one-sun illumination, which is approximately 3.6 times that of natural evaporation. Furthermore, we fabricated a large-scale steam evaporator with a total area of 900 cm2 for the recovery of the EtOH–H2O mixture, which was placed in an outdoor environment for one whole day (0:00–24:00) to evaluate the real-world evaporation and recovery performance. The EtOH content of the collected mixture remained almost invariable after evaporation, showing great potential in industrial production. The lignocellulosic JE-based evaporation device may be a promising solar energy-driven system for the highly efficient recovery of the EtOH–H2O mixture.
研究领域:
能源材料
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环境科学
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Sijie Zhou,Chunhua Zhang,Liangjun Xia,Zhuan Fu,Na Zhu,Junyao Gong,Xiaofeng Wang,Pei Lyu,Li Li,Weilin Xu
Lignocellulosic biomass is a potential biotemplate for disposing the burden of the uncontrollable accumulation of environmental contaminants disrupting the hydrophytic ecosystems. Herein, an efficient solar-driven catalyst was prepared using a natural three-dimensional (3D) porous lignocellulose-based Juncus effusus (JE) fiber for wastewater treatment. Owing to the exquisite 3D microstructure and abundant hydroxyl groups, the two-dimensional lamellar graphitic carbon nitride/graphene oxide (g-C3N4/GO) nanocomposites were successfully synthesized and decorated on the carboxymethylated JE fiber via the electrostatic self-assembly method. The as-prepared g-C3N4/GO-JE (CNG-JE) photocatalyst exhibits excellent light absorption efficiency and a superior ability to accelerate photogenerated electron migration. The outstanding adsorption performance toward pollutants also contributes to the photodegradation property of CNG-JE, showing highly efficient degradation of C.I. Reactive Red 120 (99.8%), C.I. Acid Yellow 11 (99.8%), methylene blue (99.4%), Cr(VI) (98.8%), and tetracycline (87.2%). Most importantly, the lignocellulose-based CNG-JE fibers could be fabricated into a photocatalyst textile due to their flexible and weavable properties. In actual application, the CNG-JE textile can be reused for at least five cycles under the sun, demonstrating that the flexible CNG-JE textile is practical and recyclable. This study may provide a platform for constructing efficient, flexible, and weavable biomass-based porous materials for cost-effective and sustainable catalytic applications.
研究领域:
环境科学
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材料科学
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化学工程
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可持续技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Yu Zhou,Xinyu Song,Shenggang Yan,Chunhua Ni,Li Xu,Liangmin Yu,Xia Li
Biomass-derived carbon has attracted extensive attention because of its unique form, wide range of sources and low cost. However, the construction of efficient biomass-based microwave absorbers with hierarchical structures and multicomponent magnetic/dielectric structures remains a great challenge. Therefore, CoNi-MOF was self-assembled in situ on the plant Juncus effusus by the microwave method, and CoNi/NC/C composites were prepared by in situ pyrolysis in a nitrogen atmosphere. The morphology, electromagnetic parameters, specific surface area and porous structure of the composites were adjusted by controlling the pyrolysis temperature. For a pyrolysis temperature of 600 ℃ and filling of 16 wt%, the composite was found to show an RL min value of − 64.3 dB at 12.88 GHz at a thickness of 2.5 mm, and the effective absorption bandwidth (EAB)reached 7.36 GHz. The excellent microwave absorption performance was attributed to conduction loss, dipole polarization, interface polarization, magnetic loss and balanced impedance matching.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）