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Recent Developments in Photocatalytic Nanotechnology for Purifying Air Polluted with Volatile Organic Compounds: Effect of Operating Parameters and Catalyst Deactivation. Catalysts 2023. [DOI: 10.3390/catal13020407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
Photocatalytic oxidation (PCO) is a successful method for indoor air purification, especially for removing low-concentration pollutants. Volatile organic compounds (VOCs) form a class of organic pollutants that are released into the atmosphere by consumer goods or via human activities. Once they enter the atmosphere, some might combine with other gases to create new air pollutants, which can have a detrimental effect on the health of living beings. This review focuses on current developments in the degradation of indoor pollutants, with an emphasis on two aspects of PCO: (i) influence of environmental (external) conditions; and (ii) catalyst deactivation and possible solutions. TiO2 is widely used as a photocatalyst in PCO because of its unique properties. Here, the potential effects of the operating parameters, such as the nature of the reactant, catalyst support, light intensity, and relative humidity, are extensively investigated. Then the developments and limitations of the PCO technique are highlighted, especially photocatalyst deactivation. Furthermore, the nature and deactivation mechanisms of photocatalysts are discussed, with possible solutions for reducing catalyst deactivation. Finally, the challenges and future directions of PCO technology for the elimination of indoor pollutants are compared and summarized.
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Abstract
The use of titania-based composite materials in the field of heterogeneous catalysis and photocatalysis has a long and rich history. Hybrid structures combining titania nanoparticles with clay minerals have been extensively investigated for nearly four decades. The attractiveness of clay minerals as components of functional materials stems primarily from their compositional versatility and the possibility of using silicate lamellae as prefabricated building blocks ready to be fitted into the desired nanoconstruction. This review focuses on the evolution over the years of synthetic strategies employed for the manufacturing of titania–clay mineral composites with particular attention to the role of the adopted preparative approach in shaping the physical and chemical characteristics of the materials and enabling, ultimately, tuning of their catalytic and/or photocatalytic performance.
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Nguyen VH, Smith SM, Wantala K, Kajitvichyanukul P. Photocatalytic remediation of persistent organic pollutants (POPs): A review. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.04.028] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Chen S, Li W, Li F, Li T, Cao W. [Ni(2,2′-bipy)3]Cl2 activated sepiolite clay with high photocatalytic and oil–water separation abilities. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.07.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ruiz-Hitzky E, Aranda P, Akkari M, Khaorapapong N, Ogawa M. Photoactive nanoarchitectures based on clays incorporating TiO 2 and ZnO nanoparticles. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2019; 10:1140-1156. [PMID: 31293852 PMCID: PMC6604728 DOI: 10.3762/bjnano.10.114] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 05/14/2019] [Indexed: 05/20/2023]
Abstract
Thought as raw materials clay minerals are often disregarded in the development of advanced materials. However, clays of natural and synthetic origin constitute excellent platforms for developing nanostructured functional materials for numerous applications. They can be easily assembled to diverse types of nanoparticles provided with magnetic, electronic, photoactive or bioactive properties, allowing to overcome drawbacks of other types of substrates in the design of functional nanoarchitectures. Within this scope, clays can be of special relevance in the production of photoactive materials as they offer an advantageous way for the stabilization and immobilization of diverse metal-oxide nanoparticles. The controlled assembly under mild conditions of titanium dioxide and zinc oxide nanoparticles with clay minerals to give diverse clay-semiconductor nanoarchitectures are summarized and critically discussed in this review article. The possibility to use clay minerals as starting components showing different morphologies, such as layered, fibrous, or tubular morphologies, to immobilize these types of nanoparticles mainly plays a role in i) the control of their size and size distribution on the solid surface, ii) the mitigation or suppression of the nanoparticle aggregation, and iii) the hierarchical design for selectivity enhancements in the catalytic transformation and for improved overall reaction efficiency. This article tries also to present new steps towards more sophisticated but efficient and highly selective functional nanoarchitectures incorporating photosensitizer elements for tuning the semiconductor-clay photoactivity.
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Affiliation(s)
- Eduardo Ruiz-Hitzky
- Materials Science Institute of Madrid, CSIC, C/ Sor Juana Inés de la Cruz 3, Cantoblanco, 28027 Madrid, Spain
| | - Pilar Aranda
- Materials Science Institute of Madrid, CSIC, C/ Sor Juana Inés de la Cruz 3, Cantoblanco, 28027 Madrid, Spain
| | - Marwa Akkari
- Materials Science Institute of Madrid, CSIC, C/ Sor Juana Inés de la Cruz 3, Cantoblanco, 28027 Madrid, Spain
- Laboratory of Nanomaterials and Renewable Energy Systems. Research and Technology Center of Energy, Borj-Cedria Science and Technology Park, BP 95, 2050 Hammam-Lif, Tunisia
| | - Nithima Khaorapapong
- Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Makoto Ogawa
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
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Liu G, Tian Y, Zhang B, Wang L, Zhang X. Catalytic combustion of VOC on sandwich-structured Pt@ZSM-5 nanosheets prepared by controllable intercalation. JOURNAL OF HAZARDOUS MATERIALS 2019; 367:568-576. [PMID: 30641427 DOI: 10.1016/j.jhazmat.2019.01.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/05/2019] [Accepted: 01/07/2019] [Indexed: 06/09/2023]
Abstract
A sandwich-structured Pt@ZSM-5 nanosheets (Pt@PZN-2) was fabricated by controllable intercalating Pt nanoparticles between ZSM-5 single-layer sheets via electrostatic adsorption with ammonium ions in diquaternary ammonium surfactant, and the following calcinations. Pt clusters (ca. 4.3 nm) confined between nanosheet layers (thickness of ca. 2.9 nm) exhibits better dispersion and higher thermal stability even after high-temperature treatment, while the Pt clusters also served as pillars which well protected the inter-layers mesopores. Catalytic combustion of toluene (a model compound of large molecules VOCs) shows catalytic activity of Pt@PZN-2 is significant higher than that of Pt-loaded nanosheet ZSM-5 zeolite prepared by conventional impregnation (Pt/ZN-2). For example, the temperature at 98% toluene conversion of Pt@PZN-2 is only 176 °C which is 24 °C and 34 °C lower than that of Pt/ZN-2 and bulky ZSM-5 supported Pt by impregnation (Pt/CZ-500), respectively. Meanwhile, Pt@PZN-2 also gives 100% toluene conversion for more than 360 h at 230 °C with a higher metal stability. The good performance of Pt@PZN-2 was attributed to the high accessibility and enhanced diffusion of the bulky reactant to active site confined in the stable inter-layer mesopores resulting from the pillar of Pt nanoparticles.
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Affiliation(s)
- Guozhu Liu
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, People's Republic of China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, People's Republic of China.
| | - Yajie Tian
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Bofeng Zhang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Li Wang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, People's Republic of China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, People's Republic of China
| | - Xiangwen Zhang
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, People's Republic of China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, People's Republic of China
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Suárez S, Jansson I, Ohtani B, Sánchez B. From titania nanoparticles to decahedral anatase particles: Photocatalytic activity of TiO2/zeolite hybrids for VOCs oxidation. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.09.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Jansson I, Kobayashi K, Hori H, Sánchez B, Ohtani B, Suárez S. Decahedral anatase titania particles immobilized on zeolitic materials for photocatalytic degradation of VOC. Catal Today 2017. [DOI: 10.1016/j.cattod.2016.11.041] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lin X, Fang J, Chen M, Huang Z, Su C. Co and Fe-catalysts supported on sepiolite: effects of preparation conditions on their catalytic behaviors in high temperature gas flow treatment of dye. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:15294-15301. [PMID: 27102621 DOI: 10.1007/s11356-016-6631-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 04/04/2016] [Indexed: 06/05/2023]
Abstract
An efficient adsorbent/catalyst Co and Fe-catalysts loaded on sepiolite (Co-Fe/sepiolite) was successfully prepared for high temperature gas flow catalytic reaction by a simple impregnation method. The impact of preparation conditions (such as pH value of impregnation solution, impregnation time, calcination temperature, and time) on catalytic activity was studied. We found that the catalytic activity of Co-Fe/sepiolite was strongly influenced by all the investigated parameters. The regeneration efficiency (RE) was used to evaluate the catalytic activity. The RE is more noticeable at pH 5.0 of impregnation solution, impregnation time 18 h, calcination temperature 650 °C, and calcination time 3 h. This Co-Fe/sepiolite has great adsorption capacity in absorbing dye. It is used for an adsorbent to adsorb dye from wastewater solution under dynamic adsorption and saturated with dye, then regenerated with high temperature gas flow for adsorption/oxidation cycles. The Co-Fe/sepiolite acts as a catalyst to degrade the dye during regeneration under high temperature gas flow. Hence, the Co-Fe/sepiolite is not only an adsorbent but also a catalyst. The Co-Fe/sepiolite is more stable than sepiolite when applied in the treatment of plant's wastewater. The Co-Fe/sepiolite can be reused in adsorption-regeneration cycle. The results indicate the usability of the proposed combined process, dye adsorption on Co-Fe/sepiolite followed by the catalytic oxidation in high temperature gas flow.
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Affiliation(s)
- Xiangfeng Lin
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, School of Environment and Resource, Guangxi Normal University, Guilin, 541004, China
| | - Jian Fang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, School of Environment and Resource, Guangxi Normal University, Guilin, 541004, China
| | - Menglin Chen
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, School of Environment and Resource, Guangxi Normal University, Guilin, 541004, China.
| | - Zhi Huang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, School of Environment and Resource, Guangxi Normal University, Guilin, 541004, China
| | - Chengyuan Su
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, School of Environment and Resource, Guangxi Normal University, Guilin, 541004, China
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Zhang H, Wei C, Huang Y, Wang J. Preparation of cube micrometer potassium niobate (KNbO3) by hydrothermal method and sonocatalytic degradation of organic dye. ULTRASONICS SONOCHEMISTRY 2016; 30:61-69. [PMID: 26597541 DOI: 10.1016/j.ultsonch.2015.11.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 10/28/2015] [Accepted: 11/01/2015] [Indexed: 06/05/2023]
Abstract
Cube micrometer potassium niobate (KNbO3) powder, as a high effective sonocatalyst, was prepared using hydrothermal method, and then, was characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). In order to evaluate the sonocatalytic activity of prepared KNbO3 powder, the sonocatalytic degradation of some organic dyes was studied. In addition, some influencing factors such as heat-treatment temperature and heat-treatment time on the sonocatalytic activity of prepared KNbO3 powder and catalyst added amount and ultrasonic irradiation time on the sonocatalytic degradation efficiency were examined by using UV-visible spectrophotometer and Total Organic Carbon (TOC) determination. The experimental results showed that the best sonocatalytic degradation ratio (69.23%) of organic dyes could be obtained when the conditions of 5.00 mg/L initial concentration, 1.00 g/L prepared KNbO3 powder (heat-treated at 400 °C for 60 min) added amount, 5.00 h ultrasonic irradiation (40 kHz frequency and 300 W output power), 100mL total volume and 25-28 °C temperature were adopted. Therefore, the micrometer KNbO3 powder could be considered as an effective sonocatalyst for treating non- or low-transparent organic wastewaters.
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Affiliation(s)
- Hongbo Zhang
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Chunsheng Wei
- College of Chemistry, Liaoning University, Shenyang 110036, PR China; National Police University of China, Shenyang 110854, PR China
| | - Yingying Huang
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Jun Wang
- College of Chemistry, Liaoning University, Shenyang 110036, PR China.
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Ma C, Zhang L, Li Y, Gao J, Wang J. Study on photocatalytic activity of Er3+:YAlO3/TiO2 composite films supported on electrically conductive glass (FTO) in visible-light photocatalytic degradation of organic dye. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.04.046] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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13
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Nishikiori H, Morita K, Shibuya Y, Tagashira K. Degradation of Trichloroethylene Using Allophane–Titania Nanocomposite Supported on Porous Filter. CHEM LETT 2015. [DOI: 10.1246/cl.150077] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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Yu SH, Li H, Yao QZ, Fu SQ, Zhou GT. Microwave-assisted preparation of sepiolite-supported magnetite nanoparticles and their ability to remove low concentrations of Cr(vi). RSC Adv 2015. [DOI: 10.1039/c5ra14130c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A sepiolite–nanomagnetite composite obtained by a facile microwave-assisted route can not only remove low concentrations of Cr(vi), but also effectively immobilize the secondary Fe3+in the final solution.
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Affiliation(s)
- Sheng-Hui Yu
- CAS Key Laboratory of Crust-Mantle Materials and Environments
- School of Earth and Space Sciences
- University of Science and Technology of China
- Hefei 230026
- P. R. China
| | - Han Li
- CAS Key Laboratory of Crust-Mantle Materials and Environments
- School of Earth and Space Sciences
- University of Science and Technology of China
- Hefei 230026
- P. R. China
| | - Qi-Zhi Yao
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei 230026
- P. R. China
| | - Sheng-Quan Fu
- Hefei National Laboratory for Physical Sciences at Microscale
- University of Science and Technology of China
- Hefei 230026
- P. R. China
| | - Gen-Tao Zhou
- CAS Key Laboratory of Crust-Mantle Materials and Environments
- School of Earth and Space Sciences
- University of Science and Technology of China
- Hefei 230026
- P. R. China
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Cámara R, Crespo E, Portela R, Suárez S, Bautista L, Gutiérrez-Martín F, Sánchez B. Enhanced photocatalytic activity of TiO2 thin films on plasma-pretreated organic polymers. Catal Today 2014. [DOI: 10.1016/j.cattod.2013.10.049] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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Miranda-García N, Suárez S, Maldonado MI, Malato S, Sánchez B. Regeneration approaches for TiO2 immobilized photocatalyst used in the elimination of emerging contaminants in water. Catal Today 2014. [DOI: 10.1016/j.cattod.2013.12.048] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Hernández-Alonso MD, García-Rodríguez S, Suárez S, Portela R, Sánchez B, Coronado JM. Operando DRIFTS study of the role of hydroxyls groups in trichloroethylene photo-oxidation over titanate and TiO2 nanostructures. Catal Today 2013. [DOI: 10.1016/j.cattod.2012.01.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Nishikiori H, Ito M, Setiawan RA, Kikuchi A, Yamakami T, Fujii T. Photofuel Cells Using Allophane–Titania Nanocomposites. CHEM LETT 2012. [DOI: 10.1246/cl.2012.725] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Portela R, Tessinari RF, Suárez S, Rasmussen SB, Hernández-Alonso MD, Canela MC, Avila P, Sánchez B. Photocatalysis for continuous air purification in wastewater treatment plants: from lab to reality. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:5040-5048. [PMID: 22443317 DOI: 10.1021/es2042355] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The photocatalytic efficiency of TiO(2)-SiMgO(x) plates to oxidize H(2)S was first evaluated in a flat laboratory reactor with 50 mL min(-1) synthetic air containing 100 ppm H(2)S in the presence of humidity. The use of the photocatalyst-adsorbent hybrid material enhanced the photocatalytic activity in terms of pollutant conversion, selectivity, and catalyst lifetime compared to previous H(2)S tests with pure TiO(2) because total H(2)S elimination was maintained for more than 30 operating hours with SO(2) appearing in the outlet as reaction product only after 18 h. Subsequently, the hybrid material was successfully tested in a photoreactor prototype to treat real polluted air in a wastewater treatment plant. For this purpose, a new tubular photocatalytic reactor that may use solar radiation in combination with artificial radiation was designed; the lamp was turned on when solar UV-A irradiance was below 20 W m(-2), which was observed to be the minimum value to ensure 100% conversion. The efficient distribution of the opaque photocatalyst inside the tubular reactor was achieved by using especially designed star-shaped structures. These structures were employed for the arrangement of groups of eight TiO(2)-SiMgO(x) plates in easy-to-handle channelled units obtaining an adequate flow regime without shading. The prototype continuously removed during one month and under real conditions the H(2)S contained in a 1 L min(-1) air current with a variable inlet concentration in the range of tens of ppmv without release of SO(2).
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Affiliation(s)
- R Portela
- CIEMAT-PSA-Environmental Applications of Solar Radiation. Madrid, Spain
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Sánchez B, Sánchez-Muñoz M, Muñoz-Vicente M, Cobas G, Portela R, Suárez S, González AE, Rodríguez N, Amils R. Photocatalytic elimination of indoor air biological and chemical pollution in realistic conditions. CHEMOSPHERE 2012; 87:625-630. [PMID: 22349060 DOI: 10.1016/j.chemosphere.2012.01.050] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 01/23/2012] [Accepted: 01/24/2012] [Indexed: 05/31/2023]
Abstract
The photocatalytic elimination of microorganisms from indoor air in realistic conditions and the feasibility of simultaneous elimination of chemical contaminants have been studied at laboratory scale. Transparent polymeric monoliths have been coated with sol-gel TiO(2) films and used as photocatalyst to treat real indoor air in a laboratory-scale single-step annular photocatalytic reactor. The analytical techniques used to characterize the air quality and analyze the results of the photocatalytic tests were: colony counting, microscopy and PCR with subsequent sequencing for microbial quantification and identification; automated thermal desorption coupled to gas chromatography with mass spectrometry detection for chemical analysis. The first experiments performed proved that photocatalysis based on UVA-irradiated TiO(2) for the reduction of the concentration of bacteria in the air could compete with the conventional photolytic treatment with UVC radiation, more expensive and hazardous. Simultaneously to the disinfection, the concentration of volatile organic compounds was greatly reduced, which adds value to this technology for real applications. The fungal colony number was not apparently modified.
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Affiliation(s)
- Benigno Sánchez
- CIEMAT, Photocatalytic Treatment of Pollutants in Air, Avda. Complutense, 40, Ed42, 28040 Madrid, Spain.
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Yang J, Yu J, Fan J, Sun D, Tang W, Yang X. Biotemplated preparation of CdS nanoparticles/bacterial cellulose hybrid nanofibers for photocatalysis application. JOURNAL OF HAZARDOUS MATERIALS 2011; 189:377-383. [PMID: 21419573 DOI: 10.1016/j.jhazmat.2011.02.048] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Revised: 02/15/2011] [Accepted: 02/16/2011] [Indexed: 05/30/2023]
Abstract
In this work, we describe a novel facile and effective strategy to prepare micrometer-long hybrid nanofibers by deposition of CdS nanoparticles onto the substrate of hydrated bacterial cellulose nanofibers (BCF). Hexagonal phase CdS nanocrystals were achieved via a simple hydrothermal reaction between CdCl(2) and thiourea at relatively low temperature. The prepared pristine BCF and the CdS/BCF hybrid nanofibers were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), UV-vis absorption spectroscopy (UV-vis), and X-ray photoelectron spectroscopy (XPS). The results reveal that the CdS nanoparticles were homogeneously deposited on the BCF surface and stabilized via coordination effect. The CdS/BCF hybrid nanofibers demonstrated high-efficiency photocatalysis with 82% methyl orange (MO) degradation after 90 min irradiation and good recyclability. The results indicate that the CdS/BCF hybrid nanofibers are promising candidate as robust visible light responsive photocatalysts.
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Affiliation(s)
- Jiazhi Yang
- Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
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Advanced Materials and New Applications of Sepiolite and Palygorskite. DEVELOPMENTS IN CLAY SCIENCE 2011. [DOI: 10.1016/b978-0-444-53607-5.00017-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Rasmussen SB, Portela R, Suárez S, Coronado JM, Rojas-Cervantes ML, Avila P, Sánchez B. Hybrid TiO2−SiMgOX Composite for Combined Chemisorption and Photocatalytic Elimination of Gaseous H2S. Ind Eng Chem Res 2010. [DOI: 10.1021/ie901733p] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Søren Birk Rasmussen
- Instituto de Catálisis y Petroleoquímica, Calle Marie Curie, 2, 28049, Cantoblanco, Madrid, Spain, CIEMAT-PSA-Aplicaciones Ambientales de la Radiación Solar, Avda. Complutense, 22, Building 42, 28040, Madrid, Spain, and Dpto. Química Inorgánica y Química Técnica, UNED, Paseo Senda del Rey, 9, 28040, Madrid, Spain
| | - Raquel Portela
- Instituto de Catálisis y Petroleoquímica, Calle Marie Curie, 2, 28049, Cantoblanco, Madrid, Spain, CIEMAT-PSA-Aplicaciones Ambientales de la Radiación Solar, Avda. Complutense, 22, Building 42, 28040, Madrid, Spain, and Dpto. Química Inorgánica y Química Técnica, UNED, Paseo Senda del Rey, 9, 28040, Madrid, Spain
| | - Silvia Suárez
- Instituto de Catálisis y Petroleoquímica, Calle Marie Curie, 2, 28049, Cantoblanco, Madrid, Spain, CIEMAT-PSA-Aplicaciones Ambientales de la Radiación Solar, Avda. Complutense, 22, Building 42, 28040, Madrid, Spain, and Dpto. Química Inorgánica y Química Técnica, UNED, Paseo Senda del Rey, 9, 28040, Madrid, Spain
| | - Juan Manuel Coronado
- Instituto de Catálisis y Petroleoquímica, Calle Marie Curie, 2, 28049, Cantoblanco, Madrid, Spain, CIEMAT-PSA-Aplicaciones Ambientales de la Radiación Solar, Avda. Complutense, 22, Building 42, 28040, Madrid, Spain, and Dpto. Química Inorgánica y Química Técnica, UNED, Paseo Senda del Rey, 9, 28040, Madrid, Spain
| | - María-Luisa Rojas-Cervantes
- Instituto de Catálisis y Petroleoquímica, Calle Marie Curie, 2, 28049, Cantoblanco, Madrid, Spain, CIEMAT-PSA-Aplicaciones Ambientales de la Radiación Solar, Avda. Complutense, 22, Building 42, 28040, Madrid, Spain, and Dpto. Química Inorgánica y Química Técnica, UNED, Paseo Senda del Rey, 9, 28040, Madrid, Spain
| | - Pedro Avila
- Instituto de Catálisis y Petroleoquímica, Calle Marie Curie, 2, 28049, Cantoblanco, Madrid, Spain, CIEMAT-PSA-Aplicaciones Ambientales de la Radiación Solar, Avda. Complutense, 22, Building 42, 28040, Madrid, Spain, and Dpto. Química Inorgánica y Química Técnica, UNED, Paseo Senda del Rey, 9, 28040, Madrid, Spain
| | - Benigno Sánchez
- Instituto de Catálisis y Petroleoquímica, Calle Marie Curie, 2, 28049, Cantoblanco, Madrid, Spain, CIEMAT-PSA-Aplicaciones Ambientales de la Radiación Solar, Avda. Complutense, 22, Building 42, 28040, Madrid, Spain, and Dpto. Química Inorgánica y Química Técnica, UNED, Paseo Senda del Rey, 9, 28040, Madrid, Spain
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Portela R, Suárez S, Rasmussen S, Arconada N, Castro Y, Durán A, Ávila P, Coronado J, Sánchez B. Photocatalytic-based strategies for H2S elimination. Catal Today 2010. [DOI: 10.1016/j.cattod.2010.03.056] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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