Evaluation of methylene blue incorporated in zeolite for construction of an optical humidity sensor

Zanjanchi, Mohammad Ali; Sohrabnezhad, Sh.

doi:10.1016/j.snb.2004.07.009

Cited by 60 publications

(37 citation statements)

References 32 publications

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“…To this end, MOR-Na and ANA-Na were treated to change Na + to H + . The protonating method followed the procedure of Zanjanchi et al [24]. The protonating procedure can be described as follows.…”

Section: Protonating Of Mor and Anamentioning

confidence: 99%

Mordenite/Nafion and analcime/Nafion composite membranes prepared by spray method for improved direct methanol fuel cell performance

Prapainainar

Kongkachuichay

et al. 2017

Applied Surface Science

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Highlight Mordenite and analcime were used as fillers in Nafion composite membranes for DMFC. The composite membranes were fabricated by spray method. Methanol permeability was reduced up to 2-3 times using the composite membranes. Mordenite/Naifon membrane showed 2 times higher DMFC performance than Nafion117. AbstractThe aim of this work was to improve proton exchange membranes (PEMs) used in direct methanol fuel cells (DMFCs). A membrane with a high proton conductivity and low methanol permeability was required. Zeolite filler in Nafion (NF matrix) composite membranes were prepared using two types of zeolite, mordenite (MOR) and analcime (ANA). Spray method was used to prepare the composite membranes, and properties of the membranes were investigated: mechanical properties, solubility, water and methanol uptake, ion-exchange capacity (IEC), proton conductivity, methanol permeability, and DMFC performance. It was found that MOR filler showed higher performance than ANA. The MOR/Nafion composite membrane gave better properties than ANA/Nafion composite membrane, including a higher proton conductivity and a methanol permeability that was 2 -3 times lower. The highest DMFC performance (10.75 mW·cm -2 ) was obtained at 70 °C and with 2 M methanol, with a value 1.5 times higher than that of ANA/Nafion composite membrane and two times higher than that of commercial Nafion 117 (NF 117).

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Section: Protonating Of Mor and Anamentioning

confidence: 99%

Mordenite/Nafion and analcime/Nafion composite membranes prepared by spray method for improved direct methanol fuel cell performance

Prapainainar

Kongkachuichay

et al. 2017

Applied Surface Science

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“…Also, the water-soluble dye has some industrial applications, which may include the dyeing of silk, leather, paper, wool and cotton, and the production of ink and copying paper [14], the quality control test of concrete and mortar [15], as well as the development of humidity-sensitive material (i.e. methylene blue-loaded zeolite) [16]. Although methylene blue is not highly toxic to human being, it can cause eye/skin irritation, and human systemic effects including cyanosis and blood changes [17].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of organic compounds from aqueous solution onto the synthesized zeolite

Tsai

Hsien

Hsu

2009

Journal of Hazardous Materials

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“…The sensor operated at two bands, either of 650 or of 745 nm, but a higher sensitivity of the measurement performance was exhibited at 650 nm. The sensor provided relatively fast responses, and about 2 min of recovery time in the adsorption step and about 4 min in the desorption step for steam [51].…”

Section: Humidity Sensorsmentioning

confidence: 99%

Zeolite-based Materials for Gas Sensors

Wang

Long

2006

Sensors

158

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Evaluation of methylene blue incorporated in zeolite for construction of an optical humidity sensor

Cited by 60 publications

References 32 publications

Mordenite/Nafion and analcime/Nafion composite membranes prepared by spray method for improved direct methanol fuel cell performance

Mordenite/Nafion and analcime/Nafion composite membranes prepared by spray method for improved direct methanol fuel cell performance

Adsorption of organic compounds from aqueous solution onto the synthesized zeolite

Zeolite-based Materials for Gas Sensors

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