Mechanical reinforcement of bioceramics scaffolds via fracture energy dissipation induced by sliding action of MoS2 nanoplatelets

Shuai, Cijun; Sun, Hang; Gao, Chengde; Feng, Pei; Guo, Wang; Yang, Youwen; Zhao, Meixia; Yang, Sheng; Yuan, Fulai; Peng, Shuping

doi:10.1016/j.jmbbm.2017.07.027

Cited by 14 publications

(12 citation statements)

References 42 publications

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“…Based on the above results, the charge transfer mechanism in MoS 2 -grafted faceted TiO 2 is illustrated in Figure 7a,b. Firstly, according to the previous reports, the purchased commercial MoS 2 was readily 2H-MoS 2 with a hexagonal structure [36,37]. Theoretically, this type MoS 2 in the faceted heterostructures should not be simply considered as co-catalysts for hydrogen generation.…”

Section: Resultsmentioning

confidence: 99%

Interfacial Charge Transfer in MoS2/TiO2 Heterostructured Photocatalysts: The Impact of Crystal Facets and Defects

Wei

Lau

et al. 2019

Molecules

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One of the most challenging issues in photocatalytic hydrogen evolution is to efficiently separate photocharge carriers. Although MoS2 loading could effectively improve the photoactivity of TiO2, a fundamental understanding of the charge transfer process between TiO2 and MoS2 is still lacking. Herein, TiO2 photocatalysts with different exposed facets were used to construct MoS2/TiO2 heterostructures. XPS, ESR, together with PL measurements evidenced the Type II electron transfer from MoS2 to {001}-TiO2. Differently, electron-rich characteristic of {101}-faceted TiO2 were beneficial for the direct Z-scheme recombination of electrons in TiO2 with holes in MoS2. This synergetic effect between facet engineering and oxygen vacancies resulted in more than one order of magnitude enhanced hydrogen evolution rate. This finding revealed the elevating mechanism of constructing high-performance MoS2/TiO2 heterojunction based on facet and defect engineering.

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Section: Resultsmentioning

confidence: 99%

Interfacial Charge Transfer in MoS2/TiO2 Heterostructured Photocatalysts: The Impact of Crystal Facets and Defects

Wei

Lau

et al. 2019

Molecules

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“…Shuhai et alreported that molybdenum disulfide nanoplatelets (MSNPs) provide high mechanical strength to implants and increase the fracture energy dissipation, form a bioactive layer in simulated body fluid (SBF), and support cell adhesion and proliferation. 54 A number of reports confirm that MoS 2 can induce bone tissue regeneration in suitable conditions. 13,55,56 3.8.…”

Section: Radiological Examinationsmentioning

confidence: 97%

Enhanced Osteogenesis by Molybdenum Disulfide Nanosheet Reinforced Hydroxyapatite Nanocomposite Scaffolds

Yadav

Mishra

Singh

et al. 2019

ACS Biomater. Sci. Eng.

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The advances in the arena of biomedical engineering enable us to fabricate novel biomaterials that provide a suitable platform for rapid bone regeneration. Herein, we have investigated the in vitro and in vivo osteogenic differentiation, proliferation, and bone regeneration capability of molybdenum disulfide nanosheets (MoS 2 NSs) reinforced HAP nanocomposite scaffolds. The MG-63 cells were incubated with HAP and HAP/MoS 2 NSs nanocomposite and followed for various cellular activities. The cells incubated with HAP@2 shows higher cell adhesion, cell proliferation, and alkaline phosphatase activity (ALP) in contrast to HAP. The in vivo and in vitro results of the increased ALP level confirm that HAP@2 promotes osteogenic differentiation. This improved osteogenesis was validated with upregulation of osteogenic marker viz. transcription factor, RUNX-2 (∼34 fold), collagen-1 (∼15 fold), osteopontin (∼11 fold), osteocalcin (∼20 fold), and bone morphogenetic protein-2 (∼12 fold) after 12 week postimplantation in comparison to drilled. The X-ray imaging demonstrates that HAP@2 implants promote rapid osteogenesis and bioresorbability than HAP and drilled. The outcomes of the present study provide a promising tool for the regeneration of bone deformities, without using any external growth factor.

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“…In this regard, Shuai et al, demonstrated that MoS 2 nanoparticles support cell adhesion and proliferation and exhibit favorable biocompatibility. 63 In another study, Wang et al, revealed MoS2 thin films compared with conventional TCPs have a larger surface areas for neural stem cell attachment and show a good electrical conductivity. 40…”

Section: Discussionmentioning

confidence: 99%

Decellularized human amniotic membrane reinforced by MoS₂-Polycaprolactone nanofibers, a novel conductive scaffold for cardiac tissue engineering

et al. 2022

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In order to regenerate myocardial tissues with functional characteristics, we need to copy some properties of the myocardium, such as its extracellular matrix and electrical conductivity. In this study, we synthesized nanosheets of Molybdenum disulfide (MoS2), and integrated them into polycaprolactone (PCL) and electrospun on the surface of decellularized human amniotic membrane (DHAM) with the purpose of improving the scaffolds mechanical properties and electrical conductivity. For in vitro studies, we seeded the mouse embryonic cardiac cells, mouse Embryonic Cardiac Cells (mECCs), on the scaffolds and then studied the MoS2 nanocomposites by scanning electron microscopy and Raman spectroscopy. In addition, we characterized the DHAM/PCL and DHAM/PCL-MoS2 by SEM, transmission electron microscopy, water contact angle measurement, electrical conductivity, and tensile test. Besides, we confirmed the scaffolds are biocompatible by 3-(4, 5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide, MTT assay. Furthermore, by means of SEM images, it was shown that mECCs attached to the DHAM/PCL-MoS2 scaffold have more cell aggregations and elongated morphology. Furthermore, through the Real-Time PCR and immunostaining studies, we found out cardiac genes were maturated and upregulated, and they also included GATA-4, c-TnT, NKX 2.5, and alpha-myosin heavy chain in cells cultured on DHAM/PCL-MoS2 scaffold in comparison to DHAM/PCL and DHAM. Therefore, in terms of cardiac tissue engineering, DHAM nanofibrous scaffolds reinforced by PCL-MoS2 can be suggested as a proper candidate.

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Mechanical reinforcement of bioceramics scaffolds via fracture energy dissipation induced by sliding action of MoS2 nanoplatelets

Cited by 14 publications

References 42 publications

Interfacial Charge Transfer in MoS2/TiO2 Heterostructured Photocatalysts: The Impact of Crystal Facets and Defects

Interfacial Charge Transfer in MoS2/TiO2 Heterostructured Photocatalysts: The Impact of Crystal Facets and Defects

Enhanced Osteogenesis by Molybdenum Disulfide Nanosheet Reinforced Hydroxyapatite Nanocomposite Scaffolds

Decellularized human amniotic membrane reinforced by MoS₂-Polycaprolactone nanofibers, a novel conductive scaffold for cardiac tissue engineering

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Mechanical reinforcement of bioceramics scaffolds via fracture energy dissipation induced by sliding action of MoS2 nanoplatelets

Cited by 14 publications

References 42 publications

Interfacial Charge Transfer in MoS2/TiO2 Heterostructured Photocatalysts: The Impact of Crystal Facets and Defects

Interfacial Charge Transfer in MoS2/TiO2 Heterostructured Photocatalysts: The Impact of Crystal Facets and Defects

Enhanced Osteogenesis by Molybdenum Disulfide Nanosheet Reinforced Hydroxyapatite Nanocomposite Scaffolds

Decellularized human amniotic membrane reinforced by MoS2-Polycaprolactone nanofibers, a novel conductive scaffold for cardiac tissue engineering

Contact Info

Product

Resources

About

Decellularized human amniotic membrane reinforced by MoS₂-Polycaprolactone nanofibers, a novel conductive scaffold for cardiac tissue engineering