Halloysite Nanotube/Polydopamine Nanohybrids as Clay-Based Photothermal Agents for Antibacterial Applications

2021 ◽  
Author(s):  
Sena Yuce ◽  
Oyku Demirel ◽  
Buket Alkan Tas ◽  
Pelin Sungur ◽  
Hayriye Unal
Keyword(s):  
Halloysite Nanotube

Positive effects of a halloysite-supported Cu/Co catalyst fabricated by a urea-driven deposition precipitation method on the CO-SCR reaction and SO2 poisoning

2021 ◽  
Author(s):  
Wei-Jing Li ◽  
Shu Tsai ◽  
Ming-Yen Wey
Keyword(s):  
Co Oxidation ◽  
Catalytic Reduction ◽  
Precipitation Method ◽  
Molar Ratio ◽  
Halloysite Nanotube ◽  
Co Catalyst ◽  
Reduction Of No ◽  
Co Catalysts ◽  
Positive Effects ◽  
So2 Poisoning

Cu/Co catalysts were prepared on halloysite nanotube supports by a urea-driven deposition-precipitation method for CO oxidation and the selective catalytic reduction of NO (CO-SCR). First, the Cu/NH3 molar ratio was...

The effect of halloysite nanotube modification on wear behavior of carbon‐aramid fiber reinforced hybrid nanocomposites

2021 ◽  
Author(s):  
Mehmet Emin Çetin ◽  
Yusuf Baştosun ◽  
Ahmet Caner Tatar ◽  
M. Huseyin CETIN ◽  
Okan Demir ◽  
...  
Keyword(s):  
Wear Behavior ◽  
Aramid Fiber ◽  
Hybrid Nanocomposites ◽  
Fiber Reinforced ◽  
Halloysite Nanotube

Kinetics of crystallization for polypropylene/polyethylene/halloysite nanotube nanocomposites

2018 ◽  
Vol 33 (4) ◽  
pp. 451-463 ◽  
Author(s):  
MY Ong ◽  
WS Chow
Keyword(s):  
Crystallization Rate ◽  
Avrami Equation ◽  
Crystallization Time ◽  
Halloysite Nanotube ◽  
Kissinger Equation ◽  
Polyethylene Blends ◽  
Instantaneous Nucleation ◽  
Half Crystallization Time ◽  
T Values ◽  
Kinetics Of

The aim of this study is to investigate the kinetics of non-isothermal crystallization of polypropylene/high-density polyethylene/halloysite nanotube (PP/HDPE/HNT) nanocomposites using three methods, that is, Avrami equation, combined Ozawa–Avrami method (hereafter called Mo model), and Kissinger equation. The Avrami exponent ( n) is in the range of 1–2 for all the PP/HDPE/HNT nanocomposites indicating instantaneous nucleation while the crystallization rate constant ( Zt) values of PP/HDPE increased with the addition of HNT. This proved that addition of HNT increases the crystallization rate. The reduction of half crystallization time ( t 1/2) for PP/HDPE as the increasing HNT loading indicates faster crystallization rate. In the Mo model, the cooling rate chosen at unit crystallization time F( T) values for PP/HDPE decreases with the addition of HNT. Kissinger equation showed that the activation energy ( E a) of crystallization for the PP/HDPE decreases with the addition of HNT. All the results demonstrated that HNT can accelerate the crystallization rate for the PP/polyethylene blends.

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