Titanium dioxide based strategies to prevent algal fouling on cementitious materials

2013 ◽  
Vol 36 ◽  
pp. 93-100 ◽  
Author(s):  
Anibal Maury-Ramirez ◽  
Willem De Muynck ◽  
Ruben Stevens ◽  
Kristof Demeestere ◽  
Nele De Belie
2013 ◽  
Vol 222 ◽  
pp. 411-418 ◽  
Author(s):  
Marianne Smits ◽  
Chun kit Chan ◽  
Tom Tytgat ◽  
Bart Craeye ◽  
Nathalie Costarramone ◽  
...  

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5423
Author(s):  
Junxing Liu ◽  
Hyeonseok Jee ◽  
Myungkwan Lim ◽  
Joo Kim ◽  
Seung Kwon ◽  
...  

Considering the increase in research regarding environmental pollution reduction, the utilization of cementitious material, a commonly used construction material, in photocatalysts has become a desirable research field for the widespread application of photocatalytic degradation technology. Nano-reinforcement technology for cementitious materials has been extensively researched and developed. In this work, as a new and promising reinforcing agent for cementitious materials, the photocatalytic performance of titanium dioxide nanotube (TNT) was investigated. The degradation of methylene blue was used to evaluate the photocatalytic performance of the TNT-reinforced cement paste. In addition, cement paste containing micro-TiO2 (m-TiO2) and nano-TiO2 (n-TiO2) particles were used for comparison. Moreover, the effect of these TiO2-based photocatalytic materials on the cement hydration products was monitored via X-ray diffraction (XRD) and thermogravimetric analysis (TG). The results indicated that all the TiO2 based materials promoted the formation of hydration products. After 28 days of curing, the TNT-reinforced cement paste contained the maximum amount of hydration products (Ca(OH)2). Furthermore, the cement paste containing TNT exhibited better photocatalytic effects than that containing n-TiO2, but worse than that containing m-TiO2.


2021 ◽  
Vol 12 (06) ◽  
pp. 297-313
Author(s):  
Valéry Kouandété Doko ◽  
Sena Peace Hounkpe ◽  
Smith Oyebissi Kotchoni ◽  
Li Hui ◽  
Abbas Tiambo Datchossa

2015 ◽  
Vol 44 (3) ◽  
pp. 966-976 ◽  
Author(s):  
Jan Tits ◽  
Clemens Walther ◽  
Thorsten Stumpf ◽  
Nathalie Macé ◽  
Erich Wieland

Luminescence line-narrowing spectroscopy has been applied to identify the mechanisms controlling the uranium retention by titanium dioxide and cement minerals.


2010 ◽  
Vol 45 (4) ◽  
pp. 832-838 ◽  
Author(s):  
Anibal Maury Ramirez ◽  
Kristof Demeestere ◽  
Nele De Belie ◽  
Tapio Mäntylä ◽  
Erkki Levänen

2009 ◽  
Vol 00 (00) ◽  
pp. 090915102728058-8
Author(s):  
Yoshiteru Kato ◽  
Yasuhiko Nakashima ◽  
Naoki Shino ◽  
Koichi Sasaki ◽  
Akihiro Hosokawa ◽  
...  

TAPPI Journal ◽  
2014 ◽  
Vol 13 (2) ◽  
pp. 17-25
Author(s):  
JUNMING SHU ◽  
ARTHAS YANG ◽  
PEKKA SALMINEN ◽  
HENRI VAITTINEN

The Ji’an PM No. 3 is the first linerboard machine in China to use multilayer curtain coating technology. Since successful startup at the end of 2011, further development has been carried out to optimize running conditions, coating formulations, and the base paper to provide a product with satisfactory quality and lower cost to manufacture. The key challenges include designing the base board structure for the desired mechanical strength, designing the surface properties for subsequent coating operations, optimizing the high-speed running of the curtain coater to enhance production efficiency, minimizing the amount of titanium dioxide in the coating color, and balancing the coated board properties to make them suitable for both offset and flexographic printing. The pilot and mill scale results show that curtain coating has a major positive impact on brightness, while smoothness is improved mainly by the blade coating and calendering conditions. Optimization of base board properties and the blade + curtain + blade concept has resulted in the successful use of 100% recycled fiber to produce base board. The optical, mechanical, and printability properties of the final coated board meet market requirements for both offset and flexographic printing. Machine runnability is excellent at the current speed of 1000 m/min, and titanium dioxide has been eliminated in the coating formulations without affecting the coating coverage. A significant improvement in the total cost of coated white liner production has been achieved, compared to the conventional concept of using virgin fiber in the top ply. Future development will focus on combining low cost with further quality improvements to make linerboard suitable for a wider range of end-use applications, including frozen-food packaging and folding boxboard.


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