MICROPOROUS AND MESOPOROUS MATERIALS
·
2022
·
IF 5.876
Xiuying Zhu,Mengjie Li,Xiong-Fei Zhang,Jianfeng Yao
Iron-based metal-organic framework (MIL-100) with intrinsic high surface area and low cost is extremely attractive in the field of organic pollutant remediation. Herein, delignified balsa wood is utilized as substrate/support for the in situ growth and dispersion of MIL-100 particles. Results demonstrate that the MIL-100 particles adhere tightly to the support and a hierarchal architecture is constructed. The MIL-100@Wood composite can be used as adsorbent and filter for the alleviation of organic contamination. With 25.4 wt% of MIL-100 loading, the MIL-100 decorated delignified wood (MD-Wood) exhibits a tetracycline (TC) adsorption capacity of 109.9 mg/g. The composite MD-Wood can be easily fabricated into an all-in-one filter and this filter presents an effective treatable volume of 1100 mL of TC solution (20 mg/L). The MD-Wood is further deposited with Ag particles and the Ag@MD-Wood can be directly applied for the flow catalytic reduction of 4-nitrophenol. Moreover, the composite woods are facile to regenerate and possess superior reusability and stability.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2016
·
IF 4.917
Ken-Lin Chang,Xi-Mei Chen,Xiao-Qin Wang,Ye-Ju Han,Laddawan Potprommanee,Jing-yong Liu,Yu-Ling Liao,Xun-an Ning,Shui-yu Sun,Qing Huang
This work describes an environmentally friendly method for pretreating rice straw by using 1-Allyl-3-methylimidazolium chloride ([AMIM]Cl) as an ionic liquid (IL) assisted by surfactants. The impacts of surfactant type (including nonionic-, anionic-, cationic- and bio-surfactant) on the ionic liquid pretreatment were investigated. The bio-surfactant + IL-pretreated rice straw showed significant lignin removal (26.14%) and exhibited higher cellulose conversion (36.21%) than the untreated (16.16%) rice straw. The cellulose conversion of the rice straw pretreated with bio-surfactant + IL was the highest and the lowest was observed for pretreated with cationic-surfactant + IL. Untreated and pretreated rice straw was thoroughly characterized through SEM and AFM. In conclusion, the results provided an effective and environmental method for pretreating lignocellulosic substrates by using green solvent (ionic liquid) and biodegradable bio-surfactant.
研究领域:
生物化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2021
·
IF 9.501
Lian Song,Xiong-Fei Zhang,Zhongguo Wang,Tianran Zheng,Jianfeng Yao
Wood-based solar desalination is emerged as one of the promising methods to address the water shortage problem. Herein, a wood evaporator was designed by a two-layer structure: a hydrophobic top layer (Fe 3 O 4 ) and a superhydrophilic delignified wood bottom layer. The Fe 3 O 4 coated delignified wood (Fe-D-Wood) demonstrates an evaporation rate of 1.3 kg m −2 h −1 and a conversion efficiency of 73%. Fe 3 O 4 with a narrow bandgap (0.8 eV) affords a broad light absorption and polyvinyl alcohol (PVA) enhances the affinity between Fe 3 O 4 and wood substrate, and the wood evaporator presents a good anti-fouling property. Two reasons contribute to such self-regenerating ability: i) salts are difficult to deposit on the hydrophobic layer, and ii) the rapid water uptake promotes the re-dissolution of salts into bulk water. Such wood-based evaporator holds great potential for practical desalination applications .
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2023
·Vol. 30
·期 9
·5607-5622
·
IF 5.7
Zhang Kecan,Li Jing,He Liang,Zhou Huajing,Guan Qingqing,Chen Keli,Shan Shaoyun,Hu Tianding
Cellulose nano/microfibres (CNFs/CMFs) with high aspect ratio were essential for mechanical strength and flexibility properties. In this study, the tobacco stem was employed as raw material for delignification with soda-oxygen (SO). By comparison with the caustic soda-anthraquinone (SAQ) treatment, based on process performance including pulp yield, residual lignin and fibre characteristics, the two-stage delignification process with total alkali 15% was selected for further preparing CNFs/CMFs with ultrasonication. Results showed that the aspect ratio of highly homogeneous CNFs/CMFs could achieve as ultra-high as 17,645. FTIR and XRD results showed that hemicellulose and lignin in CNFs/CMFs were widely removed, and the crystallinity was about 62%. TGA results exhibited that the degradation temperature was significantly enhanced to 330.2 °C. Finally, the CNF/CMF-based film was prepared and its folding endurance, tensile breaking strength, and burst strength could achieve 136, 61.28 N m/g, 278 kPa m 2 /g. The production of CNFs/CMFs from underutilized tobacco stems provided the potential to add value for industrial waste.
研究领域:
材料科学
·
生物质利用
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Jinchao Zhang,Zhijun Hu,Yi Hou,Chaojun Wu,Wei Ding
Moisture-induced electricity generation is an emerging sustainable technology for alleviating the ever-growing energy crisis. Wood is a promising biobased hydrovoltaic material due to its natural porosity and hydrophilicity. In this work, we developed an efficient wood hydrogel-based moist-electric generator (WHMEG) by combining a wood porous structure and ionic hydrogels. The ionically conductive wood hydrogel was fabricated by infiltrating poly(vinyl alcohol) (PVA)/poly(acrylic acid) (PAA) hydrogels into the porous structure of delignified wood. The balsa wood exposed more hydrophilic cellulose and porous channels after delignification (DL), creating favorable conditions for the filling and cross-linking of the hydrogel networks. The filling of PAA/PVA ionic hydrogels significantly improved the ionic conductivity of wood, from 3.78 × 10–4 S/cm in raw wood to 5.39 × 10–4 S/cm in the wood hydrogel with an 8 h delignification (longitudinal direction), which created favorable conditions for ion diffusion and migration. When exposed to atmospheric moisture, driven by the synergistic effect of asymmetric moisture adsorption and ion migration, a single WHMEG device (DL for 8 h) with dimensions of 1 cm × 1 cm could generate an open-circuit voltage of ∼525 mV and a short-circuit current of ∼1.85 μA in the ambient environment (∼25 °C and 65 ± 5% relative humidity). Our findings contribute to the development of energy-harvesting systems from sustainable wood materials.
研究领域:
材料科学
·
能源技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Zhongguo Wang,Fengyue Yin,Xiong-Fei Zhang,Tianran Zheng,Jianfeng Yao
Particulate matter (PM) pullution has emerged as a global concern. Herein, delignified wood functionalized with metal–organic frameworks (MOFs) was investigated for efficient PM removal. In particular, the lignin removal was realized by a deep-eutectic-solvent assisted process. By integrating three different MOFs into the porous wood matrix, wood-based filters with hierarchical structure were fabricated. The MOF particles including ZIF-8, MOF-199 and UiO-66 were deposited on the filters through in situ growth approach, thereby leading to a uniform MOF dispersion and strong wood-MOF adhesion. The ZIF-8 functionalized wood filter exhibited the highest PM removal performance, with PM 2.5 and PM 10 removal efficiencies of 89.8% and 91.6%, respectively. The superior PM capture ability of ZIF-8@Wood is attributed to the suitable surface property and sophisticated channels/pores. The gas transport pathways and PM capture mechanisms within wood filter were discussed in detail. This cost-effective and environmentally friendly filtration device provides a novel material platform for PM removal, and it could be extended for hazardous gas capture and volatile organic compound adsorption.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Guiying Zhu,Chaozheng Liu,Changli Zhang,Jiangtao Shi,Changtong Mei,Mingzhu Pan,Zhipeng Liu
Achieving room-temperature phosphorescence (RTP) relies heavily on stabilizing the triplet states of organic phosphors through the confinement effect. However, the development of efficient confinement templates with adjustable cavity sizes, environmental friendliness, and ease of processing remains an immense challenge. Herein, we present the exploration of delignified wood (DW) as a confinement template to successfully achieve the RTP of organic dyes. Our findings demonstrate that encapsulating organic dyes within the adjustable nanopores of DW enables the generation of their RTP. Mechanistic investigations revealed that the DW matrix plays a crucial role in stabilizing the triplet state of organic dyes through effective nanospace confinement, hydrogen-bonding interactions, and efficient shielding against moisture and oxygen. Notably, the wood-based RTP composites exhibit exceptional processability, facilitating the precise fabrication of data security and encryption devices by using three-dimensional (3D) printing technology. This research establishes fundamental design principles and versatile strategies for developing environmentally friendly and sustainable organic RTP materials.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2024
·
IF 12.7
Xinpu Li,Hanzhou Ye,Xiang Zhao,Yanjun Li,Ge Wang
The development of thin-type bamboo bundle laminated veneer lumber (T-BLVL) represents a significant advancement in environmentally friendly and sustainable building materials . However, the application of T-BLVL is still hindered by poor dimensional stability and low mechanical strength . In this study, the delignified thin-type bamboo bundle laminated veneer lumber (D-T-BLVL) was prepared through the partial delignification of bamboo bundles and the synergistic effects of phenolic resin (PF). These effects included gluing, strengthening, and waterproofing. D-T-BLVL exhibited high strength, dimensional stability, and a remarkable thickness of only 5 mm. After the removal of 26 % lignin, the porosity of bamboo bundles increased by 117 % compared with natural bamboo bundles, facilitating enhanced PF infiltration. D-T-BLVL exhibited a bending strength of 281.84 MPa, representing an 83.75 % increase over that of T-BLVL (153.38 MPa). Additionally, the water absorption thickness expansion rate of D-T-BLVL (3.37 %) was only approximately 1/4 times that of T-BLVL (13.30 %). The development of D-T-BLVL provides valuable guidance for developing wind turbines , infrastructures, and other advanced technologies.
研究领域:
材料科学
·
林业工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2016
·Vol. 52
·期 6
·3321-3329
·
IF 2.302
Gan Wentao,Gao Likun,Xiao Shaoliang,Zhang Wenbo,Zhan Xianxu,Li Jian
Wood is one of the key renewable resources due to its excellent structure and physical properties. Functionalized wood and wood-based materials not only possess important engineering applications but also great potential in some new technology fields, such as electronics, optics, and energy. Endowing these functional wood-based materials with magnetic properties has an important significance for exploring lightweight building materials or electronic devices. In this study, we report the fabrication of a transparent magnetic wood (TMW) based on filling the index-matching methyl methacrylate and magnetic Fe 3 O 4 nanoparticles into the delignified wood template. The presence of the polymer and Fe 3 O 4 nanoparticles within the wood structure is monitored by scanning electron microscopy, energy-dispersive X-ray analysis, and Fourier transformation infrared spectroscopy. The resulting TMW possesses moderate transparency and magnetic properties combining with outstanding mechanical performance. Moreover, the influence of the concentration of Fe 3 O 4 nanoparticles on the final optical, magnetic, and mechanical properties of TMW is also discussed. This work provides a potential strategy to develop wood-based materials for magneto-optical application.
研究领域:
材料科学
·
林业工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
VACUUM
·
2022
·
IF 4.11
Shenjie Han,Jin Wang,Luming Wang
In this paper, lignocellulosic carbon material (LCM) was prepared by carbonizing the delignified wood (DW), which was fabricated by delignification and freeze drying. LCM was characterized by field emission scanning electron microscopy , nitrogen adsorption measurements, X-ray diffraction, Fourier-transform infrared spectroscopy, thermogravimetric analysis (TGA), and water contact angle measurements. LCM with average pore diameter of 3.2 ± 0.1 nm maintained honeycomb-like skeleton after the pyrolysis and demonstrated Type IV N 2 adsorption–desorption isotherm. LCM showed Type H4 hysteresis loop. With high porosity, strong hydrophobicity , flame retardancy, and electrical conductivity , LCM had great application potential in adsorbents and waterproof, fireproofing, and electronic devices.
研究领域:
材料科学
·
林业工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ENERGY
·
2023
·
IF 9
Hao Yue,Yangcen Ou,Jiuao Wang,Haibo Wang,Zongliang Du,Xiaosheng Du,Xu Cheng
The development of form-stable phase-change material (PCM) with solar-thermal harvest, electromagnetic interference (EMI) shielding, and flame-retardancy is crucial for efficient building energy management and conservation. Herein, novel Ti 3 C 2 T x MXene/delignified wood supported form-stable phase-change composites (PMPCMs) with superior solar-thermal conversion efficiency, highly EMI shielding effects, and excellent flame-retardancy were fabricated by alkaline boiling delignification , ammonium dihydrogen phosphate (ADP) and MXene deposition, and melted n -octadecane impregnation. Benefiting from the powerful surface tension and capillary force of the wood-based support materials, PMPCMs can effectively encapsulate the melted n -alkane molecules and inhibit their leakage. The differential scanning calorimetry results showed that PMPCMs possessed superior n -octadecane encapsulation yield and high thermal energy storage density (166.9–191.6 J/g). Decorating delignified wood by MXene significantly improved the solar-thermal storage efficiency (up to 88.4 %) and EMI shielding performance of PMPCMs. The average EMI shielding effectiveness of PMPCM-10 was enhanced to 34.12 dB in X-band frequency range of 8.2–12.4 GHz. Moreover, with the introduction of the flame-retardant ADP, the peak heat release rate (pHRR) and total heat release (THR) of PMPCMs decreased noticeably, demonstrating the enhanced flame retardancy of delignified wood supported phase-change composites. In summary, PMPCMs exhibited superior application prospects in building energy management and electromagnetic shielding fields.
研究领域:
材料科学
·
能源工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2019
·Vol. 11
·期 2
·331
·
IF 3.164
Huiyang Bian,Xinxing Wu,Jing Luo,Yongzhen Qiao,Guigan Fang,Hongqi Dai
Developing economical and sustainable fractionation technology of lignocellulose cell walls is the key to reaping the full benefits of lignocellulosic biomass. This study evaluated the potential of metal chloride-assistedp-toluenesulfonic acid (p-TsOH) hydrolysis at low temperatures and under acid concentration for the co-production of sugars and lignocellulosic nanofibrils (LCNF). The results indicated that three metal chlorides obviously facilitated lignin solubilization, thereby enhancing the enzymatic hydrolysis efficiency and subsequent cellulose nanofibrillation. The CuCl2-assisted hydrotropic pretreatment was most suitable for delignification, resulting in a relatively higher enzymatic hydrolysis efficiency of 53.2%. It was observed that the higher residual lignin absorbed on the fiber surface, which exerted inhibitory effects on the enzymatic hydrolysis, while the lower lignin content substrates resulted in less entangled LCNF with thinner diameters. The metal chloride-assisted rapid and low-temperature fractionation process has a significant potential in achieving the energy-efficient and cost-effective valorization of lignocellulosic biomass.Keywords:hydrotropic treatment;metal chloride;delignification;enzymatic saccharification;lignocellulosic nanofibrils
研究领域:
生物技术
·
材料科学
✓ 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）