scholarly journals 3D Ultralight Hollow NiCo Compound@MXene Composites for Tunable and High-Efficient Microwave Absorption

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Hui-Ya Wang ◽  
Xiao-Bo Sun ◽  
Shu-Hao Yang ◽  
Pei-Yan Zhao ◽  
Xiao-Juan Zhang ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Self Assembly ◽  
Synergistic Effects ◽  
Filler Loading ◽  
Simple Strategy ◽  
High Efficient ◽  
Hierarchical Architectures ◽  
Double Hydroxides ◽  
Minimum Reflection Loss ◽  
Ku Band

AbstractThe 3D hollow hierarchical architectures tend to be designed for inhibiting stack of MXene flakes to obtain satisfactory lightweight, high-efficient and broadband absorbers. Herein, the hollow NiCo compound@MXene networks were prepared by etching the ZIF 67 template and subsequently anchoring the Ti3C2Tx nanosheets through electrostatic self-assembly. The electromagnetic parameters and microwave absorption property can be distinctly or slightly regulated by adjusting the filler loading and decoration of Ti3C2Tx nanoflakes. Based on the synergistic effects of multi-components and special well-constructed structure, NiCo layered double hydroxides@Ti3C2Tx (LDHT-9) absorber remarkably achieves unexpected effective absorption bandwidth (EAB) of 6.72 GHz with a thickness of 2.10 mm, covering the entire Ku-band. After calcination, transition metal oxide@Ti3C2Tx (TMOT-21) absorber near the percolation threshold possesses minimum reflection loss (RLmin) value of − 67.22 dB at 1.70 mm within a filler loading of only 5 wt%. This work enlightens a simple strategy for constructing MXene-based composites to achieve high-efficient microwave absorbents with lightweight and tunable EAB."Image missing"

scholarly journals 1D flower-like Fe3O4@SiO2@MnO2 nanochains inducing RGO self-assembly into aerogels for high-efficient microwave absorption

2020 ◽  
Vol 188 ◽  
pp. 108462 ◽  
Author(s):  
Mingliang Ma ◽  
Wenting Li ◽  
Zhouyu Tong ◽  
Yuying Yang ◽  
Yong Ma ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Self Assembly ◽  
High Efficient

scholarly journals In Situ Construction of Ag/TiO2/g-C3N4 Heterojunction Nanocomposite Based on Hierarchical Co-Assembly with Sustainable Hydrogen Evolution

Nanomaterials ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 1 ◽  
Author(s):  
Rui Geng ◽  
Juanjuan Yin ◽  
Jingxin Zhou ◽  
Tifeng Jiao ◽  
Yao Feng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Self Assembly ◽  
Active Sites ◽  
Carrier Transport ◽  
Synergistic Effects ◽  
Electron Hole ◽  
Simple Strategy ◽  
Promising Strategy ◽  
Catalytic Active Sites

The construction of heterojunctions provides a promising strategy to improve photocatalytic hydrogen evolution. However, how to fabricate a nanoscale TiO2/g-C3N4 heterostructure and hinder the aggregation of bulk g-C3N4 using simple methods remains a challenge. In this work, we use a simple in situ construction method to design a heterojunction model based on molecular self-assembly, which uses a small molecule matrix for self-integration, including coordination donors (AgNO3), inorganic titanium source (Ti(SO4)2) and g-C3N4 precursor (melamine). The self-assembled porous g-C3N4 nanotube can hamper carrier aggregation and it provides numerous catalytic active sites, mainly via the coordination of Ag+ ions. Meanwhile, the TiO2 NPs are easily mineralized on the nanotube template in dispersive distribution to form a heterostructure via an N–Ti bond of protonation, which contributes to shortening the interfacial carrier transport, resulting in enhanced electron-hole pairs separation. Originating from all of the above synergistic effects, the obtained Ag/TiO2/g-C3N4 heterogenous photocatalysts exhibit an enhanced H2 evolution rate with excellent sustainability 20.6-fold-over pure g-C3N4. Our report provides a feasible and simple strategy to fabricate a nanoscale heterojunction incorporating g-C3N4, and has great potential in environmental protection and water splitting.

Antibiotic-anionic Clay Matrix Used for Drug Controlled Release

2018 ◽  
Vol 69 (2) ◽  
pp. 321-323
Author(s):  
Georgeta Zegan ◽  
Elena Mihaela Carausu ◽  
Loredana Golovcencu ◽  
Alina Sodor Botezatu ◽  
Eduard Radu Cernei ◽  
...  
Keyword(s):  
Controlled Release ◽  
Layered Double Hydroxides ◽  
Bioactive Molecules ◽  
Drug Controlled Release ◽  
Anionic Clays ◽  
Anionic Clay ◽  
Toxicological Studies ◽  
High Efficient ◽  
Clay Matrix ◽  
Double Hydroxides

Anionic clay matrix acting as drug controlled release system have shown in last years a great potential for delivery of bioactive molecules and chemical therapeutics. This organic-inorganic nanohybrid system is high efficient offering an excellent protection of intercalated compounds from degradation. Compared to other nanoparticles used in medical area, anionic clays type layered double hydroxides have found to be biocompatible according to toxicological studies. Ampicillin containing MgAlLDHs and ZnAlLDH samples have been prepared following two routes: anion-exchange procedure and reconstruction from calcined layered double hydroxides. Solid samples have been characterized by FTIR and SEM-EDX highlighting the alteration of pristine LDHs structure when the antibiotic is introduced in the interlayer gallery.

High-efficient removal of U(VI) from aqueous solution by self-assembly pomelo peel/palygorskite composite

2021 ◽  
Author(s):  
Xiaofeng Huang ◽  
Qiulin Deng ◽  
Xingzhang Wang ◽  
Hongquan Deng ◽  
Tinghong Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Self Assembly ◽  
Efficient Removal ◽  
Pomelo Peel ◽  
High Efficient

Position Selective Dielectric Polarization Enhancement in CNTs Based Heterostructures for High-Efficient Microwave Absorbing

Nanoscale ◽  
2021 ◽  
Author(s):  
Haihua Hu ◽  
Yun Zheng ◽  
Kun Ren ◽  
Jieying Wang ◽  
Yanhui Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Microwave Absorption ◽  
Dielectric Polarization ◽  
High Efficient ◽  
Microwave Absorbing

Constructing carbon nanotubes (CNTs) based on heterostructures have been proved to be an effective way to improve microwave absorption (MA) capability of the materials, regardless of the inner wall or...

A conformational tweak for enhanced cellular internalization, photobleaching resistance and prolonged imaging efficacy

2020 ◽  
Vol 56 (94) ◽  
pp. 14861-14864
Author(s):  
Niranjan Meher ◽  
Anil Parsram Bidkar ◽  
Debasish Barman ◽  
Siddhartha Sankar Ghosh ◽  
Parameswar Krishnan Iyer
Keyword(s):  
Self Assembly ◽  
Biological Activities ◽  
Cellular Internalization ◽  
Molecular Systems ◽  
Simple Strategy ◽  
Fine Tune

A simple strategy of conformational manipulation has been unveiled to fine-tune the photophysical and supramolecular self-assembly properties of small molecular systems, which subsequently regulates their biological activities.

Sign in / Sign up

Export Citation Format

Share Document