SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Yingying Yin,Lei Zhu,Tianchao Guo,Xurong Qiao,Shaopeng Gan,Xiao Chang,Xiaofang Li,Fujun Xia,Qingzhong Xue
The development of efficient oil/water separation membranes is highly significant for reducing severe environmental pollution nowadays. Constructing hierarchical structures with double-scale roughness and inverted trapezoidal geometry is an alternative rational design to fabricate low oil-adhesive membranes. Based on this design concept, a Cu mesh vertically wrapped with novel microphone-like Cu-CAT-1 hierarchical microstructures with double-scale roughness was tactfully prepared by a local concentration effect, which was referred to as CCMOF. The CCMOF possessed superior anti-oil-fouling performance and an outstanding water-absorbing capacity (180.3% larger than that of the pristine Cu mesh) due to its ingenious microphone-like structures and its high affinity for water. Therefore, it could separate various types of oil/water mixtures with a considerably high flux of over 25,000 L m −2 h −1 and an extremely low oil content in filtrate of below 10 ppm. The design concept of this work offered a simple idea to design low oil-adhesive membranes for efficient oil/water separation.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
Chemistry-An Asian Journal
·
2017
·Vol. 12
·期 6
·655-664
·
IF 4.083
Tuan-Wei Sun,Ying-Jie Zhu,Feng Chen,Yong-Gang Zhang
Graphical A perfectly good paper : A composite biopaper made of ultralong hydroxyapatite nanowires (UHANWs) and collagen (Col) exhibits high flexibility, superior mechanical properties, high cytocompatibility, and excellent cellular attachment performance as compared with the pure collagen and hydroxyapatite nanorods/Col membranes, and is promising for applications in various biomedical fields such as guided bone regeneration. Highly flexible hydroxyapatite/collagen (HAP/Col) composite membranes are regarded to be significant for guided bone regeneration application owing to their similar chemical composition to that of natural bone, excellent bioactivity and good osteoconductivity. However, the mechanical strength of the HAP/Col composite membranes is usually weak, which leads to difficult surgical operations and low mechanical stability during the bone healing process. Herein, highly flexible ultralong hydroxyapatite nanowires/collagen (UHANWs/Col) composite biopaper sheets with weight fractions of UHANWs ranging from 0 to 100 % are facilely synthesized. The UHANWs are able to weave with each other to construct a three-dimensional fabric structure in the collagen matrix, providing a strong interaction between UHANWs and an intermolecular force between UHANWs and the collagen matrix. The as-prepared UHANWs/Col composite biopaper exhibits improved mechanical properties and high flexibility. More importantly, the as-prepared highly flexible 70 wt % UHANWs/Col composite biopaper exhibits an excellent cytocompatibility and outstanding cellular attachment performance as compared with the pure collagen and 70 wt % HAP nanorods/Col membranes. In consideration of its superior mechanical properties and outstanding cellular attachment performance, the as-prepared UHANWs/Col composite biopaper is promising for applications in various biomedical fields such as guided bone regeneration.
研究领域:
生物医学材料
·
组织工程
✓ 已验证
DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2025
·
IF 8.9
Yi-liang Zou,Chao-qun Wu,Guo-rui Zhang,Xiao-dong Qi,Yong Wang
Electromagnetic interference (EMI) shielding and infrared (IR) stealth technologies play crucial role in modern industrial and military fields. However, the secondary pollution of electromagnetic waves (EMWs) generated by reflection-dominated EMI shielding materials is undesirable. Therefore, preparing eco-friendly coatings that integrate electromagnetic protection and thermal camouflage while reducing the EMWs reflectivity through simple methods is of great significance. This paper proposes a straightforward strategy: using tannic acid (TA)-modified MXene as the conductive fillers and waterborne polyurethane (WPU) as the matrix, gradient structure is spontaneously formed within the coatings via a one-step spraying method. The resulting composite coatings achieve excellent EMI shielding effectiveness (37.4 dB) and high absorption coefficient (0.41). Under the synergistic protection of WPU and TA, composite coatings maintain superb EMI shielding performance (retention rate exceeding 93 %) in harsh environments. Due to the low IR emissivity of MXene, composite coatings also exhibit satisfactory IR stealth performance under different temperature fields, which not only achieve ideal camouflage of human body and significant reduction of detection signal in the medium (60 ℃) and high (120 ℃) temperature environments. Finally, benefiting from the adhesive properties of WPU, composite coatings perform outstandingly in both qualitative and quantitative adhesion tests. This study provides important references for the design and fabrication of multifunctional protective coatings in commercial and military applications.
研究领域:
材料科学
·
电磁兼容技术
·
红外技术
·
涂层技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Jingyi Chen,Yuankang Guo,Yajie He,Meizhen Yin,Xiangge Du,Jixing Xia,Jie Shen,Min Dong,Shuo Yan
Botanical pesticides are promising alternatives for sustainable pest management due to their environmental compatibility, biodegradability, and multitarget mechanisms that help delay pest resistance. Unfortunately, most botanical pesticides face challenges such as limited water solubility and poor foliar adhesion, thereby limiting their large-scale field application. Herein, the star polycation (SPc) nanocarrier and X-100 surfactant were introduced to successfully develop an efficient nanodelivery platform for veratramine (VAM). The SPc could spontaneously assemble with VAM via a hydrogen bond and van der Waals force, and the integration of Triton X-100 stabilized the nanoscale size (84 nm) to prepare a VAM nanopesticide. Interestingly, this optimized system reduced the contact angle and increased the retention of VAM on plant leaves while remarkably facilitating its systemic transport through roots and leaves. Compared to commercial VAM, the VAM nanopesticide showed stronger contact and stomach toxicity against multiple pest species such as aphids, thrips, and mites, which exhibited fast-acting properties in the field with high control efficacy even at 7 d after the spraying. Subsequently, the RNA-seq and biological experiments demonstrated that the application of VAM nanopesticide influenced various pathways in aphids, inducing starch and sucrose metabolism, protein digestion and absorption, etc., with inhibitory effects on the biosynthesis of trehalose and protein. Importantly, the application of the VAM nanopesticide did not adversely influence the predatory lady beetles or cowpea seedlings, confirming its safety in actual applications. Overall, our work addressed the formulation instability and environmental loss of VAM while ensuring its ecological safety, which offered a scalable nanoplatform to optimize botanical pesticides for enhanced efficacy and minimized ecological risks.
研究领域:
农学
·
纳米技术
·
昆虫学
·
植物保护
·
环境毒理学
·
生物信息学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2022
·
IF 8.035
Qiming Zhuo,Wenli Liu,Penghui Wang,Jiushuai Deng,Peng Xi,Yuzhe Hua
The precise separation of macerals is the premise and foundation for the efficient utilization of coal resources, and flotation is the separation method with the greatest industrial potential. The differences in the surface hydrophobicity of macerals provide the basis for flotation, but the complexity of their surface properties makes separation challenging. In this study, sub-bituminous coal was used to obtain vitrinite and inertinite , and a detailed analysis was carried out on the samples. The surface morphologies of vitrinite and inertinite were observed in the QI TM (quantitative imaging) mode of AFM (atomic force microscope) to explore the adsorption of the reagents. The effect of the reagents on the interaction forces between the coal particles and bubbles was measured to reveal the change in hydrophobicity. The attachment performance of macerals under different reagent treatments was investigated using a laboratory-built apparatus. Overall, the results demonstrated that the difference in zeta potential between vitrinite and inertinite was a viable approach for separating the macerals. CTAB adsorption on coal samples changed the surface morphology and the interaction force between particles and bubbles. Interestingly, CTAB adsorption on the gas–liquid interface decreased the interaction force. Vitrinite and inertinite attachment performances were enhanced when Al 3+ and SDS were used simultaneously.
研究领域:
矿物加工
·
表面化学
·
煤炭科学
·
材料科学
✓ 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）