CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Jingyu Wang,Dezhe Fan,Lizhu Zhang,Dongjie Yang,Xueqing Qiu,Xuliang Lin
Biomass-derived porous carbon is a promising antibiotic adsorption material due to its abundant reserves, low cost, and eco-friendly features. However, most biomass-derived porous carbon exhibits undesirable performance in the adsorption of high-molecular-weight antibiotics, which is attributed to the large mass transfer resistance during the adsorption process. Herein, we employ lignosulfonate (LS) as the biomass carbon source and CaCO 3 as the activator to fabricate lignin-derived hierarchical porous carbon (LPC-CaCO 3 ) which possesses a high surface area (2944 m 2 /g) and a large pore volume (1.406 cm 3 /g). Moreover, we demonstrate uniform mixing and simultaneous pyrolysis of carbon resources and activators are essential to the formation of interconnected pores. Large numbers of connected pores effectively reduce the mass transfer resistance. LPC-CaCO 3 exhibits high adsorption capacity to low-molecular-weight antibiotics (sulfamethazine) and high-molecular-weight antibiotics (tylosin) in both batch and column modes. The adsorption performances of LPC-CaCO 3 to antibiotics, especially high-molecular-weight antibiotics, are superior to most other reported biomass-derived carbons, commercial activated carbons, and petroleum-derived carbons. This work presents an effective strategy to fabricate a high-performance antibiotics adsorbent from biomass resources and provides deep insight into the structure–activity relationship of porous antibiotics adsorbents.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
BIOMACROMOLECULES
·
2023
·
IF 6.2
Yangrui Du,Yangjing Bai,Shiying Lang,Dandan Xing,Li Ma,Kaijun Li,Jinyu Peng,Xinyun Li,Gongyan Liu
Developing a hemostatic sponge that can effectively control bleeding from visceral injuries while guiding in situ tissue regeneration in incompressible wounds remains a challenge. Most of the existing hemostatic sponges degrade slowly, are relatively single-functioning, and cannot cope with complex environments. Herein, a biodegradable rapidly hemostatic sponge (GPZ) was created by dual-dynamic-bond cross-linking among Zn2+, protocatechualdehyde (PA)-containing catechol and aldehyde groups, and gelatin. GPZ had a uniformly distributed interconnected pore structure with excellent fluid absorption. It could effectively absorb the oozing blood and increase the blood concentration while stimulating platelet activation and accelerating blood coagulation. Compared to commercial hemostats, GPZ treatment significantly accelerated hemostasis in the rat liver defect model (∼0.33 min, ≥50% reduction in the hemostatic time) and in the rabbit liver defect model (∼1.02 min, ≥60% reduction in the hemostatic time). Additionally, GPZ had excellent antibacterial and antioxidant properties that effectively protected the wound from infection and excessive inflammation. In the liver regeneration model, GPZ significantly increased the rate of hepatic tissue repair and promoted rapid functional recovery without complications and adverse reactions. Overall, we designed a simple and effective biodegradable rapid hemostatic sponge with good clinical translational potential for treating lethal incompressible bleeding and promoting wound healing.
研究领域:
生物医学工程
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材料科学
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肝脏病学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Binpeng Zhang,Yuting He,Chunshan Zhu,Wanpeng Sun,Han Wang,Dan Liu,Baoqiang Huang,Pinbo Fan
The porous structure of adsorbents is an important factor of their adsorption performance, especially in fixed-bed systems. In this study, we fabricated lignin-derived porous carbon (LPC-Mg) with interconnected pores, which exhibited low resistance for the transport of contaminants in water. The maximum adsorption capacity of LPC-Mg toward Rhodamine B (RhB) and Congo red (CR) was 403.2 and 735.3 mg·g −1 in the batch adsorption mode and 330.5 and 718.6 mg·g −1 in the column adsorption mode. Microporous, hierarchical porous, and commercial activated carbon were used as carbonaceous adsorbents for comparison. The RhB and CR adsorption capacity of LPC-Mg was 1.8–26.6 and 4.0–33.6 times those of other carbonaceous adsorbents at the breakthrough points in fixed-bed systems, respectively. This study developed an effective strategy toward the improvement in the adsorption efficiency of carbon-based adsorbents in fixed-bed systems.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2024
·Vol. 7
·期 2
·1-12
·
IF 23.2
Li Bin,Li Jian,Guo Minghui
Using biomass waste materials to prepare electrode materials with excellent properties is an effective strategy for solving current energy and environmental problems. In this work, coffee grounds were pretreated with Co(NO 3 ) 2 and Ni(NO 3 ) 2 , then KOH was used to activate the pretreated coffee grounds at a high temperature to obtain a foam-like electrode material with interconnected microporous-mesoporous-macroporous hierarchical channels. This preparation method is simple and has low energy consumption, and the resulting material has an ultra-low internal resistance of 0.31 Ω. The specific capacitance of CGC-2 is 302.65 F g −1 at a current density of 1 A g −1 . The low internal resistance and high electrical conductivity of this activated material are attributed to the presence of Co 2+ and Ni 2+ during carbonization, whose catalytic effect leads to a relatively ordered lattice structure. The interconnected structure of the final product is mainly caused by the strong activation function of KOH generating many pores. The prepared material exhibits good rate performance and cycling stability, and it has a Coulombic efficiency of nearly 93%. This work provides a novel idea for using biomass materials to fabricate high-performance electrode materials for supercapacitors. Graphical abstract
研究领域:
储能
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材料科学
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环境科学
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电化学
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纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
·
2019
·Vol. 108
·期 3
·645-653
·
IF 3.221
Teliang Lu,Shenglei Feng,Fupo He,Jiandong Ye
Pore structure plays an important role in the in vivo osteogenesis for bone repair materials. In this study, honeycomb β-tricalcium phosphate (β-TCP) scaffolds were prepared by extrusion method, and gelatin microspheres were used as porogens to modify the pore structure of the scaffolds. The honeycomb β-TCP scaffolds were characterized by channel-like square macropores and unidirectional interconnection. To improve the pore interconnectivity of the scaffold, the spherical pores were formed in the channel walls by burning off the gelatin microspheres. Compared with unidirectional honeycomb β-TCP scaffold, the honeycomb β-TCP scaffold with interconnected pore structure had significantly higher porosity and faster degradation rate, at the expense of the mechanical strength. The in vivo assessment results demonstrated excellent osteogenesis of the honeycomb scaffolds. Moreover, the honeycomb β-TCP scaffold with interconnected pore structure markedly promoted new bone formation in comparison with the unidirectional honeycomb β-TCP scaffold. This work provides a new approach to prepare scaffolds with interconnected pore structure, and the honeycomb β-TCP scaffold with interconnected pore structure is expected to serve as an efficient bone repair material.
研究领域:
生物材料
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组织工程
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骨科
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 23
·10856-10867
·
IF 9.931
Xiangzhong Ren,Moujie Huang,Shan Luo,Yongliang Li,Libo Deng,Hongwei Mi,Lingna Sun,Peixin Zhang
A novel free-standing and binder-free air electrode with excellent electrochemical performance was designed for highly reversible Li–O2 batteries. The 3D hierarchically N, S co-doped macro–mesoporous carbon (NSMmC) was deposited on carbon paper (CP) via a template method, and then uniformly decorated with PdNi nanoparticles. The macropores of the porous carbon can provide enough space to accommodate discharge products, while the interconnected pores and channels efficiently facilitate oxygen and electrolyte diffusion. The introduction of PdNi nanoparticles greatly reduce the charge transfer resistance, resulting in the improvement of electron mobility of the whole cathode. Compared with Pd–NSMmC/CP and NSMmC/CP cathodes, the PdNi–NSMmC/CP cathode shows considerable enhancement of Li–O2 battery performance. The ultrafine and evenly distributed PdNi nanoparticles can not only provide enough catalytic sites, but can also tailor the discharge products into a cage-like morphology, which provides enough channels for electron and lithium ion transport. Moreover, the smaller size of the cage-like Li2O2 makes it decompose more easily, resulting in lower charge overpotential. This study provides a promising strategy to design 3D structured air cathodes for Li–O2 batteries with high electrocatalytic performance.
研究领域:
材料科学
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电化学
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能源存储
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电池技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）