Bulk production of porous TiO2 nanowires by unique solvo-plasma oxidation approach for combating biotic and abiotic water contaminants

2021 ◽  
Author(s):  
Gul Afreen ◽  
Jose Antonio Lara-Ramos ◽  
Niraj Ashutosh Vidwans ◽  
Veerendra Atla ◽  
Vivekanand Kumar ◽  
...  
Keyword(s):  
Plasma Oxidation ◽  
Tio2 Nanowires ◽  
Water Contaminants ◽  
Porous Tio2 ◽  
Bulk Production

Porous TiO2 nanowires derived from nanotubes: Synthesis, characterzation and their enhanced photocatalytic properties

2013 ◽  
Vol 181 ◽  
pp. 146-153 ◽  
Author(s):  
Zhen Jin ◽  
Fan-Li Meng ◽  
Yong Jia ◽  
Tao Luo ◽  
Jin-Yun Liu ◽  
...  
Keyword(s):  
Photocatalytic Properties ◽  
Tio2 Nanowires ◽  
Porous Tio2

Oriented Hierarchical Porous TiO2 Nanowires on Ti Substrate: Evolution of Nanostructures for Dye-Sensitized Solar Cells

2014 ◽  
Vol 145 ◽  
pp. 231-236 ◽  
Author(s):  
Byungho Lee ◽  
Jae Ik Kim ◽  
Sangheon Lee ◽  
Taehyun Hwang ◽  
Seunghoon Nam ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Tio2 Nanowires ◽  
Porous Tio2 ◽  
Dye Sensitized ◽  
Hierarchical Porous ◽  
Sensitized Solar Cells

Synthesis of porous TiO2 nanowires and their photocatalytic properties

2017 ◽  
Vol 10 (4) ◽  
pp. 395-401 ◽  
Author(s):  
Yonglun Tang ◽  
Haibo Ren ◽  
Jiarui Huang
Keyword(s):  
Photocatalytic Properties ◽  
Tio2 Nanowires ◽  
Porous Tio2

scholarly journals Effect of pH on selective decomposition of target water contaminants onto porous TiO2 photocatalyst

2017 ◽  
Vol 17 (6) ◽  
pp. 1740-1747
Author(s):  
Abolfazl Zakersalehi ◽  
Hyeok Choi
Keyword(s):  
Natural Organic Matter ◽  
Mesoporous Structure ◽  
Size Exclusion ◽  
Tio2 Photocatalyst ◽  
Ionization State ◽  
Water Contaminants ◽  
Porous Tio2 ◽  
Physical Access ◽  
Crucial Parameter ◽  
Size Target

Abstract Non-selectivity of TiO2-based photocatalysis is a known drawback of this technology for full scale water treatment applications. It results in significant decline in decomposition of toxic target contaminants when other non-toxic organic compounds such as natural organic matter (NOM) compete in the reaction. Previously, size exclusion of large NOM onto the mesoporous structure of TiO2 photocatalyst was proven to improve the selective decomposition of small size target chemicals. In this study, manipulation of reaction pH as a crucial parameter in governing the adsorption and decomposition of organic chemicals was combined with the size exclusion of NOM. The effects of size-based adsorption/exclusion and pH-dependent electrostatic attraction/repulsion were investigated by using humic acid as model NOM and ibuprofen and methylene blue as model target contaminants. Adsorption and decomposition of the targets were dependent on their hydrodynamic size and ionization state. Mesoporous TiO2 suppressed physical access of large NOM onto its surface while reaction pH influenced the surface charge of TiO2 and the speciation of the chemicals and thus controlled their adsorption and decomposition. The results imply that selecting a proper pH can significantly improve selective decomposition of a target onto porous TiO2 in the presence of NOM.

Synthesis of Ag-decorated porous TiO2 nanowires through a sunlight induced reduction method and its enhanced photocatalytic activity

2016 ◽  
Vol 387 ◽  
pp. 469-476 ◽  
Author(s):  
Yun-Chang Yao ◽  
Xin-Rong Dai ◽  
Xiao-Ye Hu ◽  
Su-Zhen Huang ◽  
Zhen Jin
Keyword(s):  
Photocatalytic Activity ◽  
Reduction Method ◽  
Tio2 Nanowires ◽  
Porous Tio2

Letters. Drinking water contaminants.

1983 ◽  
Vol 17 (9) ◽  
pp. 394-394 ◽  
Author(s):  
JGMM Smeenk
Keyword(s):  
Drinking Water ◽  
Water Contaminants

Optical analysis of ink and other contaminants in process waters

TAPPI Journal ◽  
2012 ◽  
Vol 11 (8) ◽  
pp. 51-58
Author(s):  
ANTTI HAAPALA ◽  
MIKA KÖRKKÖ ◽  
ELISA KOIVURANTA ◽  
JOUKO NIINIMÄKI
Keyword(s):  
Optically Active ◽  
Process Water ◽  
Paper Machine ◽  
Optical Analysis ◽  
Direct Process ◽  
Active Components ◽  
Water Contaminants ◽  
Dependent Measurement ◽  
Measurement Methodology

Analysis methods developed specifically to determine the presence of ink and other optically active components in paper machine white waters or other process effluents are not available. It is generally more interest¬ing to quantify the effect of circulation water contaminants on end products. This study compares optical techniques to quantify the dirt in process water by two methods for test media preparation and measurement: direct process water filtration on a membrane foil and low-grammage sheet formation. The results show that ink content values obtained from various analyses cannot be directly compared because of fundamental issues involving test media preparation and the varied methodologies used to formulate the results, which may be based on different sets of assumptions. The use of brightness, luminosity, and reflectance and the role of scattering measurements as a part of ink content analysis are discussed, along with fine materials retention and measurement media selection. The study concludes with practical tips for case-dependent measurement methodology selection.

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