CHEMICAL ENGINEERING JOURNAL
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2018
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IF 6.735
Luhua Jiang,Yunguo Liu,Guangming Zeng,Shaobo Liu,Wei Que,Jiang Li,Meifang Li,Jun Wen
Increasingly applications of graphene nanomaterials have resulted in their release into the water environments where lot kinds of chemicals and inorganic nanoparticles co-exist. In this work, the influences of two common inorganic nanoparticles (INPs), namely SiO 2 and Al 2 O 3 , on the adsorption of 17β-estradiol (E2) onto graphene oxide (GO) were examined by using batch adsorption experiments in combination with microscopic, spectroscopic, and computational methods. Results exhibited that the presence of INPs significantly inhibited the adsorption and increased the time to reach adsorption equilibrium for the adsorption of E2 onto GO. Besides, the impact of Al 2 O 3 was greater than that of SiO 2 due to the enhanced electrostatic attraction between positively charged Al 2 O 3 and negatively charged GO. Derjaguin-Landau-Verwey-Overbeek calculation revealed that GO tended to first homoaggregate and then heteroaggregate with SiO 2 . However, oppositely charged Al 2 O 3 and GO were likely to heteroaggregation rather than homoaggregation. This was also demonstrated by the zeta potential measurement, and scanning electron microscope. These observations highlighted the significant influence of INPs on the adsorption of contaminants onto GO, and also provided new insights into the fate and transport of GO and pollutants in natural water environments.
研究领域:
环境科学
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纳米生物学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 3
·期 3
·1042-1048
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IF 0
Zehong Cheng,Benzhao He,Li Zhou
Two dimensional MoS2 nanosheets decorated with inorganic nanoparticles (INPs) are emerging as novel MoS2-based nanohybrids for tuning the intrinsic attributes of both components for fundamental research and technological applications. However, the design and fabrication of MoS2–INP nanohybrids with a tailor-made structure and functions remain a significant challenge. Herein we report a general and controllable protocol for the one-step synthesis of various MoS2–INP nanohybrids by employing carboxylic MoS2 (MoS2–COOH) nanosheets as a versatile support. The obtained MoS2–INP nanohybrids exhibit good dispersibility, high reactivity and excellent processability. The size, morphology and coverage density of INPs on the surface of MoS2–COOH can be readily controlled by tuning the feed ratio. Control experiments reveal that the presence of carboxylic functional groups plays a key role in controlling the structure and properties of the resulting MoS2–INP nanohybrids. In addition, ternary MoS2-based nanohybrids can also be readily prepared by this approach, as exemplified by the synthesis of MoS2–Fe3O4/Pt nanohybrids, which simultaneously exhibit excellent catalytic performance toward the reduction of 4-nitrophenol and favorable magnetic separation capability. Considering the simple fabrication process, high controllability of this protocol and excellent performance of the product, the present work opens up enormous opportunities for the large-scale production of diverse MoS2-based nanohybrids for many technological applications.
研究领域:
材料科学
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纳米技术
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化学工程
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DOI
POLYMER COMPOSITES
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2022
·Vol. 43
·期 11
·7871-7881
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IF 3.531
Dongdong Zeng,Yuhang Su,Jiaqi Dong,Xiaojun Ma,Lili Yu,Youjun Lv
In this study, four typical biocomposites from lignin blended with poly-3-hydroxybutyrate-3-hydroxyhexanoate (PHBH) using inorganic nanoparticles (INPs) (SiO 2 , MMT, CaCO 3 , and BN) as fillers were evaluated, which enhanced the thermal, mechanical, and barrier properties of composites. The results revealed that the selection of suitable INPs doped into the lignin/PHBH (L/P) composites was an important approach to achieve available function. MMT/L/P nanocomposites were significantly higher than those of untreated L/P composites in thermal stability (T max exceed 10%) and barrier properties (water vapor and oxygen resistance increased by 48% and 46%), and BN particles increased the initial thermal decomposition temperature by 8%. The elongation at break of CaCO 3 /L/P and BN/L/P composites were increased by 344% and 319%, while SiO 2 /L/P composites had the best tensile strength (18.8 MPa). Besides, the INPs/L/P nanocomposites in this paper exhibited excellent ultraviolet (UV) resistance and might become potential anti-UV packaging materials for grease foods.
研究领域:
材料科学
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生物工程
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DOI
高影响因子
Polymer Chemistry
·
2021
·Vol. 12
·期 29
·4184-4192
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IF 5.582
Qunli Yu,Nan Sun,Dengwen Hu,Yaping Wang,Xiaohua Chang,Nan Yan,Yutian Zhu,Yongjin Li
In this work, we proposed an effective route, i.e., three-dimensional (3D) confined co-assembly of block copolymers (BCPs) and inorganic nanoparticles (NPs) within organic emulsion droplets, to efficiently encapsulate high-density and large-size NPs into the wall of BCP vesicles. Attributed to the interfacial instability, the aqueous phase could spontaneously enter into the organic emulsion droplets, thus inducing the formation of BCP vesicles encapsulated with NPs. Moreover, it is found that the encapsulation of NPs into the vesicle wall is mainly dominated by the ratio (DN/dw0) of the NP diameter (DN) to the layer thickness of the affinitive blocks (dw0). Utilizing the 3D confined co-assembly of polystyrene-block-poly(4-vinylpyridine) and PS-coated gold nanoparticles (AuNPs) with different diameters, the high-efficiency encapsulation of AuNPs in the BCP vesicle wall at a DN/dw0 value of 0.66 can be achieved, which is greater than the previous reported critical value (i.e., DN/dw0 ≈ 0.5). Although the conformational entropy loss of the polymer chains increases with the introduction of AuNPs, the NPs can still be successfully encapsulated into the vesicle wall because the oil–water interface can suppress the diffusion of NPs to the aqueous phase. However, as the DN/dw0 value is further increased to 1.04, AuNPs will be repelled out of the vesicles because of the extremely strong entropic repulsion arising from the drastic loss in conformational entropy of PS blocks, thus forming some spherical hybrid micelles independently. Our results provide a new and facile route to realize the efficient encapsulation of large size NPs into polymeric vesicles.
研究领域:
材料科学
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纳米技术
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产品关联
DOI
高影响因子
Science China-Materials
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2023
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IF 8.1
Liu Lin,Shi Junpeng,Peng Shanshan,Zhong Hongyun,Lin Peng,Wang Jinyuan,Sun Xia,Song Liang,Yuan Quan,Zhang Yun
The near-infrared-II (NIR-II) lanthanide-doped inorganic nanoparticles (NPs) have received considerable attention because of their low photon scattering and autofluorescence for deep tissue penetration. These NIR-II NPs have a “rigid” and physiologically inert crystal lattice (such as NaYF 4 :Yb,Er) and cannot be degraded in vivo , limiting their biomedical applications. Changing the chemical structure to achieve the transition from “rigid” to “soft” crystals is a feasible method for realizing their biodegradable applications. Herein, we developed a type of biodegradable NIR-IIb lanthanide-doped inorganic NPs, Na 3 ZrF 7 :Yb,Er,Ce (NZF). By optimizing the regulation of Na and doping with Ce 3+ , the NIR-IIb down-conversion luminescence (DCL) intensity of NZF NPs increased 37 times compared with Na 3 ZrF 7 :Yb,Er. Additionally, because of their “soft” crystal lattice features, water can destroy their crystal structure, and the degradation products can be excreted from the organs and tissues. Furthermore, NZF NPs exhibit red-emitting up-conversion luminescence (UCL). After surface modifications, we performed the proof of concept in biodegradable bioimaging applications and photodynamic therapy based on their NIR-IIb DCL and red-emitting UCL. These findings will benefit the future biomedical applications of lanthanide-doped inorganic NPs.
研究领域:
材料科学
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纳米技术
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生物医学工程
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诊疗学
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产品关联
DOI
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2022
·Vol. 307
·期 10
·2200251
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IF 4.402
Xinxin Liu,Minmin Chang,Hui Zhang,Junli Ren
A variety of 0D nanoparticles (MgO, ZnO, Al 2 O 3 , Fe 2 O 3 , SiO 2 , and TiO 2 ) as nanofiller materials are introduced into polyacrylamide- g -carboxymethyl xylan (PAM- g -CMX) composite hydrogel. The effects of different shapes and different sizes of nanoparticles on the properties of hydrogels are investigated. The properties of nanocomposite hydrogels are analyzed by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy (SEM), rheological analysis, swelling analysis, and mechanical test. Composite hydrogels with nanoparticles exhibit uniform pore structure and smaller pore size in SEM images, resulting in a reduced equilibrium swelling ratio. In addition, the results show that the hydroxyl groups on the surface of the nanoparticles forms hydrogen bonds with the amino groups and carboxyl groups in the PAM- g -CMX cross-linked network which improve the mechanical strength of nanocomposite hydrogels. The hydrogel with 20 nm MgO has the maximum compressive strength (550.9 kPa), tensile strength (28.6 kPa), and the longest elongation (813%) owing to the spherical shape and small size of MnO (20 nm). The hydrogels with nanoparticles maintain the originated 90% strength after 30 cycles of compressive test. The hydrogels with nanoparticles will offer new insights for xylan application.
研究领域:
材料科学
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聚合物化学
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纳米技术
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复合材料
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yichao Chen,Ruidong Ming,Jingyi Wang,Zhuohao Bao,Linxin Lu,Zhengliang Du,Yiheng Song,Xianze Yin,Xianjie Wen
Addressing industrial fluorine waste disposal while enhancing fluorinated triboelectric materials constitutes dual critical challenges. By compounding oxygen-free CaF 2 nanoparticles synthesized from solidified fluoride ions with PVDF, this study achieves simultaneous environmental remediation and triboelectric enhancement. The synergistic mechanisms include: (1) Intrinsic negative triboelectric polarity enhancement (work function increased from 4.97 to 5.31 eV); (2) Aggregated state modulation ( β -phase: 76.8 % to 90.8 %; crystallinity: 43.5 % to 48.9 %); (3) Interfacial polarization (>25 % dielectric constant increase at 1 kHz). The 20 wt% CaF 2 /PVDF composite film exhibits 128 V open-circuit voltage, 43 nC transferred charge, and 403.3 mW/m 2 power density - representing 2.79-fold enhancement over pure PVDF. The composite maintains >95 % output stability through 3000 bending cycles and functions effectively as wearable strain sensors for human motion monitoring. This integrated strategy establishes a sustainable paradigm merging waste valorization with high-performance triboelectric material design.
研究领域:
材料科学
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纳米技术
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能量收集
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可穿戴电子
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环境修复
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聚合物复合材料
✓ 已验证
产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2022
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IF 6.056
Dehai Yu,Qi Luo,Chuanyuan Yang,Chen Yang,Shan Li,Zhe Wang,Qiang Wang,Wenxia Liu,Huili Wang,Dandan Ji
Compared with traditional surfactant-stabilised emulsions, Pickering emulsions, stabilised by clay nanoparticles, have the advantages of strong interface stability, strong versatility, and low toxicity. Moreover, they have excellent application potential in the fields of food and medicine. In this study, a food-grade Pickering emulsion stabiliser was prepared by physically adsorbing the cationic surfactant ethyl lauroyl arginate (LAE) on the surface of nano-montmorillonite (NMMT). Different LAE/NMMT combinations were assessed for their capacity to stabilise an oil-in-water emulsion at a low solid concentration (0.5%, w/v). The controllability of the droplet diameter and stability of the Pickering emulsions can be realised by changing the content of LAE. Scanning electron microscopy (SEM), atomic force microscopy (AFM), and laser confocal microscopy (CLSM) confirmed the successful preparation of sunflower oil Pickering emulsion droplets stabilised by LAE/NMMT (0.0075%/1%). Additionally, the LAE/NMMT studied in this work could be used as a highly effective antibacterial surfactant with inorganic nanoparticles to efficiently stabilise Pickering emulsions, thus expanding the potential of preparing edible Pickering emulsion formulae.
研究领域:
食品科学
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胶体化学
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材料科学
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纳米技术
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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）