Electrochromic Performance and Capacitor Performance of α-MoO3 Nanorods Fabricated by a One-Step Procedure

In this paper, we propose for the first time the synthesis of α-MoO3 nanorods in a one-step procedure at mild temperatures. By changing the growth parameters, the microstructure and controllable morphology of the resulting products can be customized. The average diameter of the as-prepared nanorods is about 200 nm. The electrochromic and capacitance properties of the synthesized products were studied. The results show that the electrochromic properties of α-MoO3 nanorods at 550 nm have 67% high transmission contrast, good cycle stability and fast response time. The MoO3 nanorods also exhibit a stable supercapacitor performance with 98.5% capacitance retention after 10,000 cycles. Although current density varies sequentially, the nanostructure always exhibits a stable capacitor to maintain 100%. These results indicate the as-prepared MoO3 nanorods may be good candidates for applications in electrochromic devices and supercapacitors.

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Facile Synthesis of Hydroxy-Substituted Thiacrown Ethers via Nucleophilic Ring Opening of Epoxides

Synthesis ◽

10.1055/s-0037-1612249 ◽

2019 ◽

Vol 51 (10) ◽

pp. 2214-2220 ◽

Cited By ~ 2

Author(s):

Monika Stefaniak ◽

Jarosław Romański

Keyword(s):

Click Chemistry ◽

Ring Opening ◽

Facile Synthesis ◽

Step Procedure ◽

Ring Opening Of Epoxides ◽

One Step ◽

Thiacrown Ethers ◽

Hydroxy Groups ◽

First Time ◽

Nucleophilic Ring Opening

The title thiacrown ethers were prepared in a one-step procedure to give a series of unique macrocycles possessing two unsubstituted hydroxy groups that can be easily functionalized. In addition, epoxides and macrocycles derived from Cookson’s birdcage diketone, were prepared. The nucleophilic ring opening of epoxides synthesis can be classified in the frame of click chemistry. Surprisingly, some of the prepared allyl substituted polyglycols as well as bis-epoxides, especially sulfur analogues, were prepared for the first time.

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One-Step Synthesis of PEG-Coated Gold Nanoparticles by Rapid Microwave Heating

Journal of Nanomaterials ◽

10.1155/2013/531760 ◽

2013 ◽

Vol 2013 ◽

pp. 1-6 ◽

Cited By ~ 18

Author(s):

Seung Kwon Seol ◽

Daeho Kim ◽

Sunshin Jung ◽

Won Suk Chang ◽

Ji Tae Kim

Keyword(s):

Gold Nanoparticles ◽

Microwave Heating ◽

Homogeneous Nucleation ◽

Growth Parameters ◽

Average Diameter ◽

Gold Particles ◽

Initial Stage ◽

High Uniformity ◽

One Step ◽

Primary Gold

Polyethylene Glycol- (PEG-) coated gold nanoparticles (PEG-AuNPs) are synthesized by a one-step route with rapid microwave heating. Homogeneous nucleation of the primary gold particles is enhanced by increasing the applied microwave power during the initial stage of the synthesis, increasing the temperature ramping rate (Rr) and resulting in decreased size and improved uniformity of the synthesized PEG-AuNPs. Using rapid microwave heating, we successfully produce uniform colloidal PEG-AuNPs with an average diameter of14.3±2.5 nm within a few minutes. By appropriate tuning of the growth parameters, microwave synthesis can produce largely colloidal PEG-AuNPs with high uniformity.

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Synthesis and Characterization of Exopolysaccharide Encapsulated PCL/Gelatin Skin Substitute for Full-Thickness Wound Regeneration

Polymers ◽

10.3390/polym13060854 ◽

2021 ◽

Vol 13 (6) ◽

pp. 854

Author(s):

Ahmad Hivechi ◽

Peiman Brouki Milan ◽

Khashayar Modabberi ◽

Moein Amoupour ◽

Kaveh Ebrahimzadeh ◽

...

Keyword(s):

Cell Activity ◽

Average Diameter ◽

Skin Substitute ◽

Full Thickness ◽

Skin Integrity ◽

Hematoxylin And Eosin ◽

First Time ◽

Full Thickness Wound

Loss of skin integrity can lead to serious problems and even death. In this study, for the first time, the effect of exopolysaccharide (EPS) produced by cold-adapted yeast R. mucilaginosa sp. GUMS16 on a full-thickness wound in rats was evaluated. The GUMS16 strain’s EPS was precipitated by adding cold ethanol and then lyophilized. Afterward, the EPS with polycaprolactone (PCL) and gelatin was fabricated into nanofibers with two single-needle and double-needle procedures. The rats’ full-thickness wounds were treated with nanofibers and Hematoxylin and eosin (H&E) and Masson’s Trichrome staining was done for studying the wound healing in rats. Obtained results from SEM, DLS, FTIR, and TGA showed that EPS has a carbohydrate chemical structure with an average diameter of 40 nm. Cell viability assessments showed that the 2% EPS loaded sample exhibits the highest cell activity. Moreover, in vivo implantation of nanofiber webs on the full-thickness wound on rat models displayed a faster healing rate when EPS was loaded into a nanofiber. These results suggest that the produced EPS can be used for skin tissue engineering applications.

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Facile Green, Room-Temperature Synthesis of Gold Nanoparticles Using Combretum erythrophyllum Leaf Extract: Antibacterial and Cell Viability Studies against Normal and Cancerous Cells

Antibiotics ◽

10.3390/antibiotics10080893 ◽

2021 ◽

Vol 10 (8) ◽

pp. 893

Author(s):

Olufunto T. Fanoro ◽

Sundararajan Parani ◽

Rodney Maluleke ◽

Thabang C. Lebepe ◽

Jose R. Varghese ◽

...

Keyword(s):

Gold Nanoparticles ◽

Cell Viability ◽

Leaf Extract ◽

Room Temperature ◽

Klebsiella Oxytoca ◽

Cost Effective ◽

Average Diameter ◽

Antibacterial Activities ◽

Inhibition Concentration ◽

First Time

We herein report a facile, green, cost-effective, plant-mediated synthesis of gold nanoparticles (AuNPs) for the first time using Combretum erythrophyllum (CE) plant leaves. The synthesis was conducted at room temperature using CE leaf extract serving as a reducing and capping agent. The as-synthesized AuNPs were found to be crystalline, well dispersed, and spherical in shape with an average diameter of 13.20 nm and an excellent stability of over 60 days. The AuNPs showed broad-spectrum antibacterial activities against both pathogenic Gram-positive (Staphylococcus epidermidis (ATCC14990), Staphylococcus aureus (ATCC 25923), Mycobacterium smegmatis (MC 215)) and Gram-negative bacteria (Proteus mirabilis (ATCC 7002), Escherichia coli (ATCC 25922), Klebsiella pneumoniae (ATCC 13822), Klebsiella oxytoca (ATCC 8724)), with a minimum inhibition concentration of 62.5 µg/mL. In addition, the as-synthesized AuNPs were highly stable with exceptional cell viability towards normal cells (BHK- 21) and cancerous cancer cell lines (cervical and lung cancer).

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One-step synthesis of well-dispersed polypyrrole copolymers under gamma-ray irradiation

Polymer Chemistry ◽

10.1039/d0py01566k ◽

2021 ◽

Vol 12 (5) ◽

pp. 645-649

Author(s):

Yu Gu ◽

Yuqing Qiao ◽

Yusen Meng ◽

Ming Yu ◽

Bowu Zhang ◽

...

Keyword(s):

Room Temperature ◽

Gamma Ray ◽

Gamma Ray Irradiation ◽

One Step ◽

First Time

Herein, we report for the first time the synthesis of polypyrrole copolymers with good solvent-dispersibility under gamma-ray irradiation at room temperature in air.

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Prioritization of public services for digitalization using fuzzy Z-AHP and fuzzy Z-WASPAS

Complex & Intelligent Systems ◽

10.1007/s40747-020-00239-z ◽

2021 ◽

Author(s):

Duygu Sergi ◽

Irem Ucal Sari

Keyword(s):

Health Care ◽

Public Transportation ◽

Health Care Services ◽

Public Services ◽

Fast Response ◽

Care Services ◽

Citizen Complaints ◽

Criteria Weights ◽

Available Information ◽

First Time

AbstractIn this paper, public services are analyzed for implementations of Industry 4.0 tools to satisfy citizen expectations. To be able to prioritize public services for digitalization, fuzzy Z-AHP and fuzzy Z-WASPAS are used in the analysis. The decision criteria are determined as reduced cost, fast response, ease of accessibility, reduced service times, increase in the available information and increased quality. After obtaining criteria weights using fuzzy Z-AHP, health care services, waste disposal department, public transportation, information services, social care services, and citizen complaints resolution centers are compared using fuzzy Z-WASPAS that is proposed for the first time in this paper. Results show that health care services have dominant importance for the digitalization among public services.

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Remarkable improvement in supercapacitor performance by sulfur introduction during a one-step synthesis of nickel hydroxide

Physical Chemistry Chemical Physics ◽

10.1039/c7cp01234a ◽

2017 ◽

Vol 19 (16) ◽

pp. 10462-10469 ◽

Cited By ~ 13

Author(s):

Liuyang Zhang ◽

Tang Jiao Huang ◽

Hao Gong

Keyword(s):

Nickel Hydroxide ◽

Remarkable Improvement ◽

One Step ◽

Supercapacitor Performance

The effect of sulfur to oxygen ratios on supercapacitor performance has been studied.

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YBa2Cu3O7 Thin Films on Polycrystalline Diamond Films with Buffer Layers

MRS Proceedings ◽

10.1557/proc-275-137 ◽

1992 ◽

Vol 275 ◽

Cited By ~ 1

Author(s):

G. Cui ◽

C. P. Beetz ◽

B. A. Lincoln ◽

P. S. Kirlin

Keyword(s):

Thin Films ◽

Diamond Films ◽

Rf Sputtering ◽

Polycrystalline Diamond ◽

Fast Response ◽

Buffer Layers ◽

Multichip Modules ◽

Ir Detectors ◽

Ybco Films ◽

First Time

ABSTRACTThe deposition of in-situ YBa2CU3O7-δ Superconducting films on polycrystalline diamond thin films has been demonstrated for the first time. Three different composite buffer layer systems have been explored for this purpose: (1) Diamond/Zr/YSZ/YBCO, (2) Diamond/Si3N4/YSZ/YBCO, and (3) Diamond/SiO2/YSZ/YBCO. The Zr was deposited by dc sputtering on the diamond films at 450 to 820 °C. The YSZ was deposited by reactive on-axis rf sputtering at 680 to 750 °C. The Si3N4 and SiO2 were also deposited by on-axis rf sputtering at 400 to 700 °C. YBCO films were grown on the buffer layers by off-axis rf sputtering at substrate temperatures between 690 °C and 750 °C. In all cases, the as-deposited YBCO films were superconducting above 77 K. This demonstration enables the fabrication of low heat capacity, fast response time bolometric IR detectors and paves the way for the use of HTSC on diamond for interconnect layers in multichip modules.

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