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Jingbo Li - One of the best experts on this subject based on the ideXlab platform.

  • the synthesis of hierarchical nanostructured mos 2 graphene composites with enhanced visible light photo Degradation Property
    Applied Surface Science, 2017
    Co-Authors: Yongjie Zhao, Xiaowei Zhang, Chengzhi Wang, Yuzhen Zhao, Heping Zhou, Jingbo Li
    Abstract:

    Abstract Novel two-dimensional materials with a layered structure are of special interest for a variety of promising applications. Herein, MoS 2 and MoS 2 /Graphene nanocomposite with hierarchical nanostructure were successfully synthesized employing a one-step hydrothermal method. Photo-Degradation of methylene blue (MB) and rhodamine (RHB) were adopted to assess the photo-Degradation ability of the products. Comparing with bare MoS 2 , the hierarchical MoS 2 /Graphene nanocomposite achieved relatively higher Degradation rate of 99% in 28 min for MB as well in 50 min for RHB. These results verified that this proposed hierarchical nanocomposite is a good photo-Degradation semiconductor. The excellent performance was mainly ascribed to the synergistic effect of MoS 2 and graphene layers. The MoS 2 possessing a band gap of 1.9 eV would provide abundant electron-hole pairs. The graphene layers with excellent electro-conductivity could realize the quick transport of electrons via its extended π-conjugation structure, consequently benefiting the separation of photo-generated carriers. These findings indicate that the graphene layer is a promising candidate as a co-catalyst for MoS 2 photo-catalyst, and also provide useful information for understanding the observed enhanced photocatalytic mechanism in experiments.

  • synthesis of the nanostructured cd4ges6 photocatalysts and their visible light driven photocatalytic Degradation Property
    Journal of Alloys and Compounds, 2014
    Co-Authors: Shengxue Yang, Fengmin Wu, Zhanghui Chen, Juehan Yang, Jingbo Li
    Abstract:

    Abstract This study reports a simple thiourea reduction method to prepare nanostructured Cd4GeS6 with direct band gap. Samples were characterized by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), high resolution transmission electron microscopy (HRTEM), and UV–Vis diffuse reflectance spectra (UV–Vis). The photocatalytic activity of the Cd4GeS6 was evaluated by the Degradation of methylene blue (MB) aqueous under visible light irradiation. The enhanced activities of Cd4GeS6 can be attributed to the direct band gap and large surface area, which is favorable for Degradation of reactants, enhancement of photo-adsorption and transfer of photogenerated carriers.

  • synthesis of the nanostructured cd4ges6 photocatalysts and their visible light driven photocatalytic Degradation Property
    ChemInform, 2014
    Co-Authors: Shengxue Yang, Fengmin Wu, Zhanghui Chen, Juehan Yang, Jingbo Li
    Abstract:

    The hydrothermal reaction of GeO2, Cd(O-Ac)2, and Me-(CH2)15NMe3Br (pH 8 adjusted with NaOH, autoclave, 100 °C, 24 h) yields Cd2Ge2O6, which is subsequently reduced via thiourea decomposition in a horizontal silica tube (400-500 °C, 30 min) to produce nanostructured Cd4GeS6 with a direct band gap.

Shengxue Yang - One of the best experts on this subject based on the ideXlab platform.

Fengmin Wu - One of the best experts on this subject based on the ideXlab platform.

Huixu Xie - One of the best experts on this subject based on the ideXlab platform.

  • enhanced osteoconductivity and osseointegration in calcium polyphosphate bioceramic scaffold via lithium doping for bone regeneration
    ACS Biomaterials Science & Engineering, 2019
    Co-Authors: Yihang Yuan, Qijuan Yuan, Zhangfan Ding, Xu Wang, Huixu Xie
    Abstract:

    Calcium polyphosphate (CPP) is a novel bioceramic bone substitute which is favored because its composition is highly similar to natural bone. According to previous studies, doping ions into CPP is an effective and convenient method for overcoming the shortcomings, such as poor osteoconductivity of CPP. Lithium (Li) is a fairly new additive to bone substitutes that brought attention due to its role in osteogenesis. The present study was conducted to assess whether doping Li into CPP could influence the microstructure, Degradation and osteoinductivity of CPP. The results found that both CPP and Li-doped-CPP (LiCPP) had a single beta-CPP phase, indicating that Li did not affect the crystallized phase. SEM images revealed both scaffolds were porous, while the surface of LiCPP was rougher and more uneven compared to CPP. Also, a better Degradation Property of LiCPP was observed via weight loss and ion release tests. In vitro study found LiCPP extracts had advantages of promoting osteoblasts’ proliferation and ...

  • application of strontium doped calcium polyphosphate bioceramic as scaffolds for bone tissue engineering
    Ceramics International, 2013
    Co-Authors: Huixu Xie, Jianyu Wang, Qianming Che
    Abstract:

    Abstract The critical success factors for bone tissue engineering in clinical applications are scaffolds. Ion doping is one of the most important methods to modify the properties of bioceramics for better angiogenesis abilities, biomechanical properties, and biocompatibility. This paper presents a novel ion doping method applied in calcium polyphosphate (CPP)-based bioceramic scaffolds substituted by strontium ions to form (SCPP) scaffolds for bone tissue regeneration. The microstructure and crystallization of the scaffolds were detected by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Degradation tests were assessed to evaluate the mechanical and chemical stabilities of SCPP in vitro. The cell biocompatibility was measured with respect to the cytotoxicity of the extractions of scaffolds. Bone implantation was performed to evaluate the biodegradability and osteoconductivity of the scaffolds, and the bone formation examined by using X-ray radiography. The results indicated that the obtained SCPP scaffolds had a single CPP phase. The SCPP scaffolds yielded a better Degradation Property than the pure CPP scaffold. The MTT assay and in vivo results reveal that the SCPP scaffolds exhibited a better cell biocompatibility and tissue biocompatibility than CPP and hydroxyapatite (HA) scaffolds. The in vivo immunohistochemistry staining for VEGF also showed that SCPP had a potential to promote the formation of angiogenesis and the regeneration of bone. SCPP scaffold could serve as a potential biomaterial with stimulating angiogenesis in bone tissue engineering and bone repair.

Jason Q Niu - One of the best experts on this subject based on the ideXlab platform.

  • engineering a superwettable polyolefin membrane for highly efficient oil water separation with excellent self cleaning and photo catalysis Degradation Property
    Journal of Membrane Science, 2020
    Co-Authors: Ming Wang, Yaoli Guo, Yingfei Hou, Jason Q Niu
    Abstract:

    Abstract Membrane technology has been intensively applied to the treatment of oily wastewater in recent years. Extensive progress has been made to design super-wetting membranes for separating stratified or emulsified oil/water mixtures. However, the membrane with small pore size is ineffective due to the severe decline of permeation, while the membrane with large pore size exhibits a poor separation efficiency for emulsion separation. Accordingly, a promising separation mechanism has been developed to improve the separation efficiency of the membrane with large pore size relying on the joint effect of demulsification and coalesce. Inspired by this strategy, a negatively charged superhydrophilic membrane is fabricated via the deposition of β-FeOOH nanorods on the commercialized sulfonated polyolefin lithium-ion battery separators (LIBS). The abundant sulfo groups on the polyolefin surface offer enough binding sites to anchor β-FeOOH nanorods. The fabricated membrane is qualified for separating stratified and emulsified oil/water mixtures, predominantly facilitated by the superwettability (underwater oil contact angle of 154° and underwater oil rolling angle of 3°) and the demulsification effect. A comprehensive oil/water separation performance of the composite membrane for the stratified and highly emulsified surfactant-free and surfactant-emulsified oil/water mixtures is obtained, with the respective permeation flux of up to 55503, 4112 and 1260 L m-2 h-1 and the corresponding separation efficiency of 99.9%, 99.2% and 98.7% solely driven by gravity. Moreover, considering the photo-Fenton catalysis of β-FeOOH, the hybrid membrane exhibits an excellent self-cleaning Property, good nanorods coating stability and superior dye Degradation ability. More importantly, LIBS possess some unique advantages of commercial availability, chemical tolerance, good flexibility and excellent mechanical strength, which provides an attempt to explore a novel high-efficiency oil/water separation material.