scholarly journals Modification strategies of TiO2 for potential applications in photocatalysis: a critical review

2018 ◽  
Vol 11 (2) ◽  
pp. 86-102 ◽  
Author(s):  
M. Humayun ◽  
F. Raziq ◽  
A. Khan ◽  
W. Luo
2019 ◽  
Vol 7 (2) ◽  
pp. 93-168 ◽  
Author(s):  
S. Kenig ◽  
H. Dodiuk ◽  
G. Otorgust ◽  
S. Gomid

With recent developments in nanotechnology, nanocomposite adhesives offer numerous advantages compared to conventional adhesive materials. Moreover, with the emergence of commercial nanomaterials such as: Nanoclays (NCs), Carbon nanotubes (CNTs), Nanosilica (NS), Polyhedral oligomeric silsesquioxanes (POSS), Tungsten disulfide (WS2) Fullerenes and Nanotubes, and Graphene nanoparticles (GNPs), new potential routes have been opened to tailor adhesives in the nanoscale range. This update will review and analyze the unique fracture mechanisms and the resultant properties of various nanocomposite adhesives based on epoxies, polyurethanes, silicones, polyimides and acrylics containing: NCs, CNTs, NS, POSS, WS2 and GNPs and their current and potential applications.


2010 ◽  
Vol 282 (4) ◽  
pp. 383-388 ◽  
Author(s):  
Charalambos Siristatidis ◽  
Charalambos Chrelias ◽  
George Salamalekis ◽  
Dimitrios Kassanos

2015 ◽  
Vol 2015 ◽  
pp. 1-18 ◽  
Author(s):  
M. Jannathul Firdhouse ◽  
P. Lalitha

Silver nanoparticles possess unique properties which find myriad applications such as antimicrobial, anticancer, larvicidal, catalytic, and wound healing activities. Biogenic syntheses of silver nanoparticles using plants and their pharmacological and other potential applications are gaining momentum owing to its assured rewards. This critical review is aimed at providing an insight into the phytomediated synthesis of silver nanoparticles, its significant applications in various fields, and characterization techniques involved.


NANO ◽  
2021 ◽  
pp. 2130001
Author(s):  
Jialu Shen ◽  
Weifeng Chen ◽  
Zihan Yang ◽  
Guo Lv ◽  
Jie Cao ◽  
...  

Graphene quantum dots (GQDs) have aroused widespread attention because of their remarkable properties and potential applications. Herein, we discuss both the top-down and bottom-up strategies for the synthesis of GQDs. Different processes are presented to study their characteristics and the influence on the final properties of GQDs. The respective advantages and disadvantages of these methods are summarized. With regard to some important or novel ones, mechanisms are proposed for reference. In addition, the application of GQDs in biosensors is highlighted in detail. At last, we put forward some problems to be solved and give a brief prospect in their future developments. This review is very useful for quickly gaining knowledge and experience for synthesizing GQDs and designing the related novel biosensors.


2021 ◽  
Vol 753 ◽  
pp. 142051
Author(s):  
Cuijie Feng ◽  
Tommaso Lotti ◽  
Roberto Canziani ◽  
Yuemei Lin ◽  
Camilla Tagliabue ◽  
...  

2015 ◽  
Vol Volume 111 (Number 11/12) ◽  
Author(s):  
Prashant Reddy ◽  
◽  

Abstract Ionic liquids have been the subject of active research over the course of the last decade and have in the past been touted as one of the most promising technologies for revolutionising the chemical and petrochemical industries. The sheer abundance of potential ionic liquid structures coupled with their tuneable physico-chemical properties has endeared ionic liquids to the scientific community across a broad range of disciplines with potential applications that include pharmaceuticals, electrolytes, thermal energy storage media and liquid mirror telescopes. Within the context of a biorefinery for the production of biofuels and other bio-based products from renewable resources, the unique abilities of some ionic liquids to selectively dissolve biomass components or whole native biomass have been demonstrated. This ability has sparked extensive investigations of ionic liquids for the pretreatment of different biomass types, particularly for the production of cellulosic biofuels. However, the esoteric nature of ionic liquids persists and constructing a fundamental framework for correlating ionic liquid structures with useful applications remains a significantchallenge. In addition to the above, the more practical challenges of toxicity, high costs, high viscosities, low solids loading and complex recycling are key factors hindering the wide-scale uptake of ionic liquids as pretreatment solvents in a commercial biorefinery. This critical review provides insights from academic studies and the implications thereof for elevating ionic liquids from the status of ‘promising’ to ‘commercialisable’ in the pretreatment of biomass. It is vital that key hurdles for the commercialisation of ionic liquids in the form of high costs, high viscosities, poor water tolerance, toxicity, low solids loading and recovery/recycling be addressed.


2015 ◽  
Vol 1769 ◽  
Author(s):  
E. Trujillo-Vázquez ◽  
M. I. Pech-Canul

ABSTRACTThis contribution presents a critical review about some materials used in dosimetry and the interest that has emerged on topaz recently. In addition, results about the feasibility for synthesizing topaz by the HYSY-CVD route using Na2SiF6 and Al2O3 are shown. Synthesis tests in nitrogen atmosphere were conducted varying temperature (700 and 750°C) and time (60 and 90 min) while maintaining constant the amounts of Al2O3 and Na2SiF6. The microstructural characterization by XRD, SEM and EDS revealed the succesful formation of topaz and aluminium fluoride.


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