Effect of TiO2/adsorbent hybrid photocatalysts for toluene decomposition in gas phase

Mo, Jinhan; Zhang, Yinping; Xu, Qiujian; Yang, Rui

doi:10.1016/j.jhazmat.2009.02.033

Cited by 61 publications

(30 citation statements)

References 22 publications

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“…A commercially available TiO 2 (Degussa P25), which is composed of nonporous polyhedral geometry with a 30 nm diameter and a specific surface area of 50 m 2 g −1 , was utilized as a photocatalyst without any pretreatment. A piece of ACF with a dimension of 59 mm × 110 mm × 1 mm was immersed in a water suspension with TiO 2 for 2 h, under ultrasonic conditions, and then dried at 105 • C for 3 h. ACFs coated with six different weights of TiO 2 (7,11,21,25,106,429 and 451 mg ACF-g −1 ) were prepared by immersing them in water suspensions with six different amounts of TiO 2 . The amount of TiO 2 coating was determined by the weight difference of the ACFs between before and after the coating procedure.…”

Section: Preparation and Characterization Of Acf/tiomentioning

confidence: 99%

“…Gaseous samples were collected at the inlet and outlet of the ACF/TiO 2 reactor over either a 9-or 20-h time period, with an interval of either 1 or 2 h. The operational parameters tested in this study included the weights of TiO 2 embedded in the ACFs, UV sources, RH, and DMS ICs. Six weights of TiO 2 (7,11,21,25,106, and 429 mg ACF-g −1 ) were tested for the DMS removal of ACF/TiO 2 . The UV radiation was supplied by either an 8-W germicidal lamp (Sankyo Denki, F40T8GL) with a maximum spectral intensity at 254 nm or an 8-W fluorescent black light (Sankyo Denki F8T5/BLB) with a maximum spectral intensity at 352 nm.…”

Section: Removal Test Of Dms Using Acf/tiomentioning

confidence: 99%

See 1 more Smart Citation

Removal of dimethyl sulfide utilizing activated carbon fiber-supported photocatalyst in continuous-flow system

Shin

Hwang

2011

Journal of Hazardous Materials

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Section: Preparation and Characterization Of Acf/tiomentioning

confidence: 99%

Section: Removal Test Of Dms Using Acf/tiomentioning

confidence: 99%

Removal of dimethyl sulfide utilizing activated carbon fiber-supported photocatalyst in continuous-flow system

Shin

Hwang

2011

Journal of Hazardous Materials

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“…Clay minerals such as kaolinite or hectorite when combined with TiO 2 have an efficiency which is at least equal to or even better than pure photocatalysts [22][23][24]. A similar improvement in the photocatalytic conversion rate was also observed for TiO 2 adsorbed onto mordenite and the authors attribute this to an increase in the reaction area [25]. Lim et al [26] used natural zeolites to improve the performance of photocatalytically active TiO 2 but in this case in polypropylene-based textiles.…”

Section: Introductionmentioning

confidence: 90%

Catalyzed Reactions on Mineral Plaster Materials Used for Indoor Air Purification

Gunschera¹,

Markewitz²,

Koberski³

et al. 2013

CLEAN Soil Air Water

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Zeolites have been used for a long time for purification and catalytical purposes. Recently, first products appeared on the market using zeolites also for improving the indoor air quality so far volatile organic compounds (VOC) are concerned. However, porous compounds like zeolites can be found also in plaster material. Therefore, it was manifest to evaluate the capability of plaster with regard to air cleaning. In this article, the contribution of plaster compounds toward adsorption and catalytical decomposition of VOCs is evaluated using a-pinene, chlorobenzene, 2-ethoxyethylacetate, and pentanal as target substances under standard conditions (238C, 50% r.H.). These compounds were chosen because of their VOC typical physicochemical properties like molecular dimensions, density, boiling point, vapor pressure, and octanol-water distribution coefficient (logk ow ). Hydrated lime and metakaolin were found out to have good adsorption properties under these circumstances. Also natural zeolites showed good results especially on pentanal. By investigations in environmental chambers the reduction potential of test plasters on chlorobenzene and 2-ethoxyethylacetate concentrations could be shown. Application of coatings had no or only temporary influence on the performance of the plaster. Additional tests in small chambers demonstrated the possibility to improve the properties of plasters with help of FAU-or MFI-type zeolites but the experiments also showed that a-pinene and pentanal undergo chemical reactions. Further effort should be made on investigations also toward other compounds, especially more volatile ones like formaldehyde. Also additional building materials like insulation material or boards should be taken into account.

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“…143) Titanium Dioxide A study reported the potential of water photolysis using a titanium dioxide (TiO 2 ) electrode by radiation with ultra-visible light. 144) TiO 2 -based photocatalytic compounds [145][146][147][148] or incorporated into cementitious materials 149) are thought to decompose air pollutants, such as organic compounds. TiO 2 has been developed and used as a photocatalyst for indoor and outdoor air purification and to purify water contaminated with low concentrations of toxic pollutants.…”

Section: Bake-out Methodsmentioning

confidence: 99%

A Review of Indoor Air Pollution and Health Problems from the Viewpoint of Environmental Hygiene: Focusing on the Studies of Indoor Air Environment in Japan Compared to Those of Foreign Countries

Harada

Hasegawa

Wei

et al. 2010

JOURNAL OF HEALTH SCIENCE

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Excessive indoor air pollution can cause sick building syndrome (SBS), cases of which still occur in Japanese homes despite strict regulations on the value of indoor chemical substances established by the Ministry of Health Labour and Welfare. Idiopathic environmental intolerance (IEI), so-called multi-chemical sensitivity (MCS) has become another issue because it is caused by an extreme low concentration of chemical substances. These problems are discussed from the viewpoint of environmental hygiene in the present study. First, indoor air quality and its adverse effect on health is reviewed according to the history of sick buildings. Next, the factors concerning indoor air quality are indicated, and then measures to combat these problems are considered to improve the indoor environment. No ideal solution has been found: however, we summarize important knowledge on research to regain patient health as a result SBS and MCS.

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Effect of TiO2/adsorbent hybrid photocatalysts for toluene decomposition in gas phase

Cited by 61 publications

References 22 publications

Removal of dimethyl sulfide utilizing activated carbon fiber-supported photocatalyst in continuous-flow system

Removal of dimethyl sulfide utilizing activated carbon fiber-supported photocatalyst in continuous-flow system

Catalyzed Reactions on Mineral Plaster Materials Used for Indoor Air Purification

A Review of Indoor Air Pollution and Health Problems from the Viewpoint of Environmental Hygiene: Focusing on the Studies of Indoor Air Environment in Japan Compared to Those of Foreign Countries

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