Photocatalytic Functional Materials for Environmental Remediation

2019 ◽  
Keyword(s):  
Environmental Remediation ◽  
Functional Materials

scholarly journals Butterfly wing architectures inspire sensor and energy applications

2020 ◽  
Author(s):  
Maurice I Osotsi ◽  
Wang Zhang ◽  
Imran Zada ◽  
Jiajun Gu ◽  
Qinglei Liu ◽  
...  
Keyword(s):  
Environmental Remediation ◽  
Light Trapping ◽  
Functional Materials ◽  
Butterfly Wing ◽  
Energy Materials ◽  
Energy Applications ◽  
Wing Scale ◽  
Improved Performance ◽  
And Performance ◽  
External Stimuli

Abstract Natural biological systems are constantly developing efficient mechanisms to counter adverse effects of increasing human population and depleting energy resources. Their intelligent mechanisms are characterized by the ability to detect changes in the environment, store and evaluate information, and respond to external stimuli. Bio-inspired replication into man-made functional materials guarantees enhancement of characteristics and performance. Specifically, butterfly architectures have inspired the fabrication of sensor and energy materials by replicating their unique micro/nanostructures, light-trapping mechanisms and selective responses to external stimuli. These bio-inspired sensor and energy materials have shown improved performance in harnessing renewable energy, environmental remediation and health monitoring. Therefore, this review highlights recent progress reported on the classification of butterfly wing scale architectures and explores several bio-inspired sensor and energy applications.

scholarly journals Scalable Fabrication of Metallopolymeric Superstructures for Highly Efficient Removal of Methylene Blue

Nanomaterials ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 1001 ◽  
Author(s):  
Meirong Zhou ◽  
Tianyu Yang ◽  
Weibin Hu ◽  
Xiaohong He ◽  
Junni Xie ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Metal Ions ◽  
Self Assembly ◽  
Environmental Remediation ◽  
Functional Materials ◽  
Maximum Adsorption Capacity ◽  
Mixed Solution ◽  
Hybrid Functional ◽  
Xps Characterization ◽  
One Step

Metallopolymeric superstructures (MPS) are hybrid functional materials that find wide applications in environmental, energy, catalytic and biomedical-related scenarios, while their fabrication usually suffers from the complicated polymerization between monomeric ligands and metal ions. In this work, we have developed a facile one-step protocol to fabricate metallopolymeric superstructures with different morphology including nanospheres, nanocubes, nanorods, and nanostars for environmental remediation application. Specifically, we have firstly synthesized the amphiphilic block copolymers (BCP) bearing hydrophobic aromatic backbone and hydrophilic pendent carboxylic/sulfonic groups, which have been subsequently transformed into MPS via the metal ions mediated self-assembly in mixed solution of dimethylformamide (DMF) and H2O. Based on SEM, FTIR, XRD and XPS characterization, we have revealed that the fine morphology and condensed structures of MPS can be modulated via the metal ions and BCP concentration, and the obtained MPS can be employed as efficient adsorbents for the removal of methylene blue with maximum adsorption capacity approaching 936.13 mg/g.

scholarly journals Highlights on Recent Developments of Heterogeneous and Homogeneous Photocatalysis

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 23
Author(s):  
Francesco Parrino ◽  
Giovanni Palmisano
Keyword(s):  
Energy Harvesting ◽  
Hydrogen Production ◽  
Organic Synthesis ◽  
Environmental Remediation ◽  
Functional Materials ◽  
Recent Developments ◽  
Homogeneous Photocatalysis

Photocatalysis emerged in the last decades as a versatile technology, whose applications range from environmental remediation to hydrogen production, energy harvesting, and organic synthesis, with exciting examples also in medicine, electronics, and advanced functional materials [...]

Facile preparation of oyster shells–derived versatile Ca–Fe–O porous materials as Fenton-like reagent for environmental remediation

2020 ◽  
Vol 13 (07) ◽  
pp. 2050034
Author(s):  
Zhiyu Liang ◽  
Guiyang Yan
Keyword(s):  
Porous Materials ◽  
Adsorption Capacity ◽  
Organic Compounds ◽  
Environmental Remediation ◽  
Functional Materials ◽  
One Pot ◽  
Facile Preparation

Recently, utilizing biomass to synthesize novel functional materials has been a focus of significant interests in a myriad of fields such as environmental remediation. Herein, Ca–Fe–O porous materials were successfully synthesized by utilizing oyster shells and K2FeO4 according to a simple one-pot method. According to the result of TEM, Fe3O4 was obtained by reducing K2FeO4 and then deposited in situ on the Ca(OH)2 nanosheets derived by CaO precursor. Such Ca–Fe–O porous materials showing outstanding adsorption capacity for RhB (146.11[Formula: see text]mg/g) and MB (135.70[Formula: see text]mg/g), additionally, would generate abundant H2O2 and remove the organic compounds through a Fenton-like reaction. It is hoped that our work could spur further interest in utilizing biomass to rationally design a variety of promising functional materials for environmental remediation.

High Resolution Electron Microscopy of internal interfaces in layered materials

1990 ◽  
Vol 48 (4) ◽  
pp. 320-321
Author(s):  
Yoichi Ishida ◽  
Hideki Ichinose ◽  
Yutaka Takahashi ◽  
Jin-yeh Wang
Keyword(s):  
Grain Boundaries ◽  
Mirror Symmetry ◽  
Functional Materials ◽  
High Resolution Electron Microscopy ◽  
Layered Materials ◽  
Plane Boundary ◽  
Chemical Information ◽  
Layer Plane ◽  
High Tc ◽  
Cubic Metals

Layered materials draw attention in recent years in response to the world-wide drive to discover new functional materials. High-Tc superconducting oxide is one example. Internal interfaces in such layered materials differ significantly from those of cubic metals. They are often parallel to the layer of the neighboring crystals in sintered samples(layer plane boundary), while periodically ordered interfaces with the two neighboring crystals in mirror symmetry to each other are relatively rare. Consequently, the atomistic features of the interface differ significantly from those of cubic metals. In this paper grain boundaries in sintered high-Tc superconducting oxides, joined interfaces between engineering ceramics with metals, and polytype interfaces in vapor-deposited bicrystal are examined to collect atomic information of the interfaces in layered materials. The analysis proved that they are not neccessarily more complicated than that of simple grain boundaries in cubic metals. The interfaces are majorly layer plane type which is parallel to the compound layer. Secondly, chemical information is often available, which helps the interpretation of the interface atomic structure.

Pyridyl disulfide-based thiol–disulfide exchange reaction: shaping the design of redox-responsive polymeric materials

2020 ◽  
Vol 11 (48) ◽  
pp. 7603-7624
Author(s):  
Ismail Altinbasak ◽  
Mehmet Arslan ◽  
Rana Sanyal ◽  
Amitav Sanyal
Keyword(s):  
Exchange Reaction ◽  
Functional Materials ◽  
Polymeric Materials ◽  
Disulfide Exchange ◽  
Redox Responsive ◽  
Synthetic Approaches

This review provides an overview of synthetic approaches utilized to incorporate the thiol-reactive pyridyl-disulfide motif into various polymeric materials, and briefly highlights its utilization to obtain functional materials.

A peek in the micro-sized world: a review of design principles, engineering tools, and applications of engineered microbial community

2020 ◽  
Vol 48 (2) ◽  
pp. 399-409
Author(s):  
Baizhen Gao ◽  
Rushant Sabnis ◽  
Tommaso Costantini ◽  
Robert Jinkerson ◽  
Qing Sun
Keyword(s):  
Microbial Community ◽  
Microbial Communities ◽  
Environmental Remediation ◽  
Real Life ◽  
Design Principles ◽  
Microbial Interactions ◽  
Potential Applications ◽  
New Gene ◽  
Global Biogeochemical Cycles ◽  
Synthetic Microbial Communities

Microbial communities drive diverse processes that impact nearly everything on this planet, from global biogeochemical cycles to human health. Harnessing the power of these microorganisms could provide solutions to many of the challenges that face society. However, naturally occurring microbial communities are not optimized for anthropogenic use. An emerging area of research is focusing on engineering synthetic microbial communities to carry out predefined functions. Microbial community engineers are applying design principles like top-down and bottom-up approaches to create synthetic microbial communities having a myriad of real-life applications in health care, disease prevention, and environmental remediation. Multiple genetic engineering tools and delivery approaches can be used to ‘knock-in' new gene functions into microbial communities. A systematic study of the microbial interactions, community assembling principles, and engineering tools are necessary for us to understand the microbial community and to better utilize them. Continued analysis and effort are required to further the current and potential applications of synthetic microbial communities.

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