Interfacial Bridging Strategy for Charge Extraction/Injection in the BiVO4/CoSn-Layered Double Hydroxide p–n Heterojunction Approach Using Graphene Quantum Dots for Enhanced Water Oxidation Kinetics

2021 ◽  
pp. 8947-8955
Author(s):  
Suhaib Alam ◽  
Mohammad Qureshi
Keyword(s):  
Quantum Dots ◽  
Layered Double Hydroxide ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Graphene Quantum Dots ◽  
Charge Extraction ◽  
Bridging Strategy ◽  
Double Hydroxide

rBMSC osteogenic differentiation enhanced by graphene quantum dots loaded with immunomodulatory layered double hydroxide nanoparticles

2021 ◽  
Author(s):  
Zhaojie Wang ◽  
Huiyi Yang ◽  
Yuxin Bai ◽  
Liming Cheng ◽  
Rongrong Zhu
Keyword(s):  
Quantum Dots ◽  
Osteogenic Differentiation ◽  
Bone Tissue ◽  
Layered Double Hydroxide ◽  
Therapeutic Potential ◽  
Graphene Quantum Dots ◽  
Allogeneic Bone ◽  
Alizarin Red ◽  
Alkaline Phosphatase Staining ◽  
Double Hydroxide

Abstract Bone tissue defects caused by disease, trauma, aging or genetic factors emerged as one of the main factors that endanger human health. At present, advanced development of bone tissue engineering and regenerative medicine focused on the biomaterials regulated stem cell for responsive differentiation. In vivo transplantation of allogeneic bone materials has the needs of both osteogenic and immune regulation function. In this study, we utilized the extensively proved biocompatible layered double hydroxide (LDH) nanoparticles as the nanocarrier of graphene quantum dots (GQD), the functional loading was validated by characteristics analysis of scanning electron microscopy, surface zeta potential, X-ray diffraction and fourier transform infrared spectroscopy. Further, we investigated the cellular uptake of nanoparticles in rat bone marrow derived mesenchymal stem cells, the significant enhanced endocytosis was occurred in LDH-GQD treated groups. The enhanced osteogenic differentiation abilities of LDH-GQD were systematically investigated through alkaline phosphatase staining, alizarin red staining and qPCR analysis. In addition, the anti-inflammatory regulation of LDH facilitated the phenotypic transition of macrophage in LDH-GQD nanocomposites. Overall, the successful construction and functional validation of nanomaterials in this study will provide clinical therapeutic potential in bone defects regeneration.

Bio-template assisted hierarchical ZnO superstructures coupled with graphene quantum dots for enhanced water oxidation kinetics

Solar Energy ◽  
2020 ◽  
Vol 199 ◽  
pp. 39-46 ◽  
Author(s):  
Suhaib Alam ◽  
Tushar Kanta Sahu ◽  
Devipriya Gogoi ◽  
Nageswara Rao Peela ◽  
Mohammad Qureshi
Keyword(s):  
Quantum Dots ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Graphene Quantum Dots

Nitrogen-doped graphene quantum dots anchored on NiFe layered double-hydroxide nanosheets catalyze the oxygen evolution reaction

2020 ◽  
Vol 44 (41) ◽  
pp. 17744-17752
Author(s):  
Qibing Dong ◽  
Chao Shuai ◽  
Zunli Mo ◽  
Zhenyu Liu ◽  
Guigui Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Oxygen Evolution Reaction ◽  
Graphene Quantum Dots ◽  
Catalytic Performance ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene ◽  
Double Hydroxide

N-GQDs/NiFe-LDH layered nanosheet structure has excellent OER catalytic performance.

Assembly of Ni–Al layered double hydroxide and oxide graphene quantum dots for supercapacitors

2018 ◽  
Vol 33 (24) ◽  
pp. 4215-4223 ◽  
Author(s):  
Yuwan Han ◽  
Ning Liu ◽  
Nan Wang ◽  
Zhanhang He ◽  
Qingchao Liu
Keyword(s):  
Quantum Dots ◽  
Layered Double Hydroxide ◽  
Graphene Quantum Dots ◽  
Image Position ◽  
Double Hydroxide

Abstract

Novel Cobalt–Iron–Vanadium Layered Double Hydroxide Nanosheet Arrays for Superior Water Oxidation Performance

2019 ◽  
Vol 7 (19) ◽  
pp. 16828-16834 ◽  
Author(s):  
Yiming Hu ◽  
Zhaolong Wang ◽  
Wenjun Liu ◽  
Li Xu ◽  
Meili Guan ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Water Oxidation ◽  
Nanosheet Arrays ◽  
Cobalt Iron ◽  
Oxidation Performance ◽  
Double Hydroxide

Fast microwave-assisted preparation of nickel–copper–chromium-layered double hydroxide as an excellent electrocatalyst for water oxidation

2021 ◽  
Author(s):  
Kamellia Nejati ◽  
Leila Jafari Foruzin ◽  
Zolfaghar Rezvani
Keyword(s):  
Charge Transfer ◽  
Layered Double Hydroxide ◽  
Water Oxidation ◽  
Bandgap Energy ◽  
Microwave Method ◽  
Optimal Amount ◽  
Microwave Assisted ◽  
Nickel Copper ◽  
Copper Chromium ◽  
Double Hydroxide

A well-designed NiCuCr-LDH was prepared using a simple microwave method. According to the OER results, doping optimal amount of Cu2+ into NiCr-LDH displayed superior OER activity, due to decreased bandgap energy and improved charge transfer.

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