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Xu J, Liu Z, Jin T, Yang X, Chen H, Chen JP. Development and testing of alginate/C 3N 4porphyrin bead as a self-initiated Fenton photocatalyst for highly efficient atrazine removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 934:173112. [PMID: 38734090 DOI: 10.1016/j.scitotenv.2024.173112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 05/07/2024] [Accepted: 05/08/2024] [Indexed: 05/13/2024]
Abstract
Fenton reaction has been widely used for efficient treatment of organic wastewater. However, its applications are limited by such key factors as pH < 3. In this study, we developed, tested, and optimized an alginate/C3N4porphyrin bead (C3N4por-SA) as a recyclable photocatalyst in a photocatalysis-self-Fenton process to overcome these limitations. Porphyrin-modified C3N4 (C3N4por) was used as the H2O2 donator, while Fe(III) nodes served as the Fenton reagent. The as-prepared floating alginate/C3N4por bead utilized the light source as a driving force for the catalysis. Under visible light irradiation for 6 h, the model pollutant atrazine was degraded by 70.96 % by the optimized photocatalyst (named as C3N4por-SA-Fe1Ca5), demonstrating better photocatalytic performance than alginate/C3N4 beads. This improvement was attributed to the higher H2O2 yield from C3N4por. The alginate/C3N4por bead showed better photocatalytic activity even after several consecutive cycles and could easily be recovered for reuse. Furthermore, Fe(III)/Ca(II) bimetallic alginate bead exhibited better photocatalytic activity and a higher content of •OH radicals than the Ca(II) monometallic alginate beads, due to the ability of Fe(III) nodes to serve as a Fenton reagent. The influences of light sources, and commonly existing matters (namely SO42-, Cl-, CO32-, NO3-, and humic acid) were investigated. Moreover, the alginate/C3N4por bead demonstrated good photocatalytic performance in a simulated natural environment without the addition of extra H2O2, with an atrazine removal percentage of up to 96.3 % after 3-h irradiation. These findings indicated the great potential of alginate/C3N4por bead in practical applications.
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Affiliation(s)
- Jiajie Xu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Zhiyu Liu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Tenghui Jin
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Xusheng Yang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Huihuang Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - J Paul Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, PR China.
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2
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Opalade AA, Tang Y, Tao FF. Integrated in situ spectroscopic studies on syngas production from partial oxidation of methane catalyzed by atomically dispersed rhodium cations on ceria. Phys Chem Chem Phys 2023; 25:4070-4080. [PMID: 36651173 DOI: 10.1039/d2cp03216c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Catalytic reforming of methane to produce syngas is an important strategy for producing value-added chemicals. The conventional reforming catalyst relies on supported nickel nanoparticles. In this work, we investigated singly dispersed Rh cations anchored on a CeO2 catalyst (Rh1/CeO2) for high activity and selectivity towards the production of syngas via partial oxidation of methane (POM) in the temperature range of 600-700 °C. The yields of H2 and CO at 700 °C are 83% and 91%, respectively. The anchored Rh1 atoms on CeO2 of Rh1/CeO2 are in the cationic state, and on an average each Rh1 atom coordinates with 4-5 surface lattice oxygen atoms of CeO2. Compared to inert CeO2 for POM, via the incorporation of single-atom sites, Rh1 modifies the electronic state of oxygen atoms proximal to the Rh1 atoms and thus triggers the catalytic activity of CeO2. The high activity of single-atom catalyst Rh1/CeO2 suggests that the incorporation of single atoms of transition metals to the surface of a reducible oxide can modulate the electronic state of proximal anions of the oxide support toward forming an electronic state favorable for the selective formation of ideal products.
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Affiliation(s)
- Adedamola A Opalade
- Department of Chemical and Petroleum Engineering, University of Kansas, KS 66045, USA. .,Department of Chemistry, University of Kansas, KS 66045, USA
| | - Yu Tang
- Department of Chemical and Petroleum Engineering, University of Kansas, KS 66045, USA.
| | - Franklin Feng Tao
- Department of Chemical and Petroleum Engineering, University of Kansas, KS 66045, USA.
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3
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Chung SH, Park GH, Schukkink N, Lee H, Shiju NR. Structure-sensitive epoxidation of dicyclopentadiene over TiO 2 catalysts. Chem Commun (Camb) 2023; 59:756-759. [PMID: 36541631 PMCID: PMC9844381 DOI: 10.1039/d2cc05305e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Epoxidation of dicyclopentadiene (DCPD) is studied on a series of TiO2 catalysts using hydrogen peroxide as an oxidant. DCPD derivatives have applications in several areas including polymer, pharmaceutical and pesticide products. The control of selectivity leading to the desired product is important for many of these applications. Using experimental and computational studies, we show that the surface crystalline phases of TiO2 play crucial roles not only in the formation of peroxo species but also in the selective epoxidation of two different CC double bonds in DCPD.
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Affiliation(s)
- Sang-Ho Chung
- Van’t Hoff Institute for Molecular Sciences, University of AmsterdamP.O. Box 941571090 GD AmsterdamThe Netherlands
| | - G. Hwan Park
- Center for Integrated Nanostructure Physics, Institute for Basic Science, Sungkyunkwan UniversitySuwon 440-746South Korea,Department of Chemistry, Sungkyunkwan UniversitySuwon 440-746South Korea
| | - Niels Schukkink
- Van’t Hoff Institute for Molecular Sciences, University of AmsterdamP.O. Box 941571090 GD AmsterdamThe Netherlands
| | - Hyoyoung Lee
- Center for Integrated Nanostructure Physics, Institute for Basic Science, Sungkyunkwan UniversitySuwon 440-746South Korea,Department of Chemistry, Sungkyunkwan UniversitySuwon 440-746South Korea
| | - N. Raveendran Shiju
- Van’t Hoff Institute for Molecular Sciences, University of AmsterdamP.O. Box 941571090 GD AmsterdamThe Netherlands
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Lo Porto C, Dell’Edera M, De Pasquale I, Milella A, Fracassi F, Curri ML, Comparelli R, Palumbo F. Photocatalytic Investigation of Aerosol-Assisted Atmospheric Pressure Plasma Deposited Hybrid TiO 2 Containing Nanocomposite Coatings. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3758. [PMID: 36364532 PMCID: PMC9653690 DOI: 10.3390/nano12213758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 10/23/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
We report on the aerosol-assisted atmospheric-pressure plasma deposition onto a stainless-steel woven mesh of a thin nanocomposite coating based on TiO2 nanoparticles hosted in a hybrid organic−inorganic matrix, starting from nanoparticles dispersed in a mixture of hexamethyldisiloxane and isopropyl alcohol. The stainless-steel mesh was selected as an effective support for the possible future technological application of the coating for photocatalytically assisted water depollution. The prepared coatings were thoroughly investigated from the chemical and morphological points of view and were demonstrated to be photocatalytically active in the degradation of an organic molecule, used as a pollutant model, in water upon UV light irradiation. In order to optimize the photocatalytic performance, different approaches were investigated for the coating’s realization, namely (i) the control of the deposition time and (ii) the application of a postdeposition O2 plasma treatment on the pristine coatings. Both strategies were found to be able to increase the photocatalytic activity, and, remarkably, their combination resulted in a further enhancement of the photoactivity. Indeed, the proposed combined approach allowed a three-fold increase in the kinetic constant of the degradation reaction of the model dye methylene blue with respect to the pristine coating. Interestingly, the chemical and morphological characterizations of all the prepared coatings were able to account for the enhancement of the photocatalytic performance. Indeed, the presence of the TiO2 nanoparticles on the outmost surface of the film confirmed the accessibility of the photocatalytic sites in the nanocomposite and reasonably explained the enhanced photocatalytic performance. In addition, the sustained photoactivity (>5 cycles of use) of the nanocomposites was demonstrated.
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Affiliation(s)
- Chiara Lo Porto
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, S.S. Bari, c/o Dip. Chimica Via Orabona 4, 70126 Bari, Italy
| | - Massimo Dell’Edera
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, S.S. Bari, c/o Dip. Chimica Via Orabona 4, 70126 Bari, Italy
| | - Ilaria De Pasquale
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, S.S. Bari, c/o Dip. Chimica Via Orabona 4, 70126 Bari, Italy
| | - Antonella Milella
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
- CNR-NANOTEC, c/o Dip. Chimica Via Orabona 4, 70126 Bari, Italy
| | - Francesco Fracassi
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
- CNR-NANOTEC, c/o Dip. Chimica Via Orabona 4, 70126 Bari, Italy
| | - Maria Lucia Curri
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, S.S. Bari, c/o Dip. Chimica Via Orabona 4, 70126 Bari, Italy
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Via Orabona 4, 70126 Bari, Italy
| | - Roberto Comparelli
- CNR-IPCF, Istituto per i Processi Chimico-Fisici, S.S. Bari, c/o Dip. Chimica Via Orabona 4, 70126 Bari, Italy
| | - Fabio Palumbo
- CNR-NANOTEC, c/o Dip. Chimica Via Orabona 4, 70126 Bari, Italy
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5
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Hano N, Ryu N, Nagaoka S, Ihara H, Takafuji M. Selective reflection enhancement by controlling of surface-layering structure of inorganic nanoparticles on polymer microspheres. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Meng F, Guo L, Zou H, Zhu B, Zhou F, Zeng Y, Han J, Yang J, Zhang S, Zhong Q. Mechanism study on TiO 2 inducing O 2- and OH radicals in O 3/H 2O 2 system for high-efficiency NO oxidation. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:123033. [PMID: 32544767 DOI: 10.1016/j.jhazmat.2020.123033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 05/11/2020] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
To achieve high NO oxidation efficiency, excessive O3 must be used, which would lead to the high cost and escape of ozone. Herein, we adopted low cost and environmental-friendly TiO2 as the catalyst of low concentration O3 and H2O2 system for high-efficiency NOx oxidation. The Ti sites on TiO2 were the deprotonation sites of H2O2 and H2O into Ti-OOH and Ti-OH species, respectively. We found that the surface of rutile phase TiO2 had a low concentration Ti-OOH component but a large amount of Ti-OH after contacting with H2O2 solution, thus lots of ·OH and a few O2- radicals formed with introducing O3 molecules. H2O2 solution induced the formation of a large amount of Ti-OOH and Ti-OH species on the anatase phase TiO2 surface, thus lots of O2- generated in the O3/H2O2 system. O2- and OH radicals could efficiently oxidize NO, in which O2- radicals could oxidize NO to NO3- in one step with high selectively. Therefore, anatase TiO2 had better performance in NOx oxidation than rutile phase TiO2. The effect of temperature and SO2 concentration on NO oxidation was also investigated, the results showed that TiO2-A/O3/H2O2 system promoted NO oxidation at a low temperature and a low concentration of SO2.
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Affiliation(s)
- Fanyu Meng
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China
| | - Lina Guo
- School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan, Anhui, 243000, PR China
| | - Haocheng Zou
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China
| | - Boming Zhu
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China
| | - Fayang Zhou
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China
| | - Yiqing Zeng
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China
| | - Jiayou Han
- Shanghai Meishan Steel Corporation Ltd., Nanjing, 210039, PR China
| | - Jun Yang
- Shanghai Meishan Steel Corporation Ltd., Nanjing, 210039, PR China
| | - Shule Zhang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China.
| | - Qin Zhong
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, PR China.
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7
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Yu S, Fan C, Han B, Qian G, Wang Z. High‐Efficiency Photocatalysis of Self‐Hydroxylated TiO
2
Nanocrystals for Water Splitting. ChemistrySelect 2019. [DOI: 10.1002/slct.201903773] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Siqi Yu
- State Key laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang University Zheda Rd.38 Hangzhou 310027 P.R. China
| | - Chenyao Fan
- State Key laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang University Zheda Rd.38 Hangzhou 310027 P.R. China
| | - Bing Han
- State Key laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang University Zheda Rd.38 Hangzhou 310027 P.R. China
| | - Guodong Qian
- State Key laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang University Zheda Rd.38 Hangzhou 310027 P.R. China
| | - Zhiyu Wang
- State Key laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang University Zheda Rd.38 Hangzhou 310027 P.R. China
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8
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Liang Y, Su K, Cao L, Li Z. Lithium doped TiO2 as catalysts for the transesterification of bisphenol-A with dimethyl carbonate. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2018.12.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Yao Y, Sun M, Yuan X, Zhu Y, Lin X, Anandan S. One-step hydrothermal synthesis of N/Ti 3+ co-doping multiphasic TiO 2/BiOBr heterojunctions towards enhanced sonocatalytic performance. ULTRASONICS SONOCHEMISTRY 2018; 49:69-78. [PMID: 30057180 DOI: 10.1016/j.ultsonch.2018.07.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 07/18/2018] [Accepted: 07/18/2018] [Indexed: 05/17/2023]
Abstract
N/Ti3+ co-doping multiphasic TiO2/BiOBr heterojunctions (NT-TBx) were prepared by one-step in situ hydrothermal processes. The crystal phase, morphology, component, and optical properties of the heterojunctions were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope, X-ray photoelectron spectroscopy, and Ultraviolet-visible diffuse reflectance spectroscopy techniques, respectively. The as-prepared samples exhibit better sonocatalytic activity for the degradation methylene blue, Rhodamine B, and p-Nitrophenol aqueous solution compared with pristine TiO2 and N/Ti3+ co-doping multiphasic TiO2. Especially, the highest degradation ratio of methylene blue was achieved for NT-TB0.3 up to 98.2% after 50 min under ultrasonic irradiation. The high sonocatalytic activity has been kept after four cycles with the tiny decline, indicating the excellent stability of the as-prepared samples. The improvement of sonocatalytic activity could be attributed to the formation of doping level and multiphasic TiO2/BiOBr heterojunctions, which account for the absorption of long wavelength light and the electron-hole pair separation, respectively. Furthermore, superoxide radical (O2-) was demonstrated to be the main reactive species for the degradation of methylene blue under ultrasonic irradiation. This study provides a facile fabrication procedure for N/Ti3+ co-doping multiphasic TiO2/BiOBr heterojunctions and demonstrates an efficient route to promote the application of TiO2 in addressing environment-related issues.
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Affiliation(s)
- Yuan Yao
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Mingxuan Sun
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China; Shanghai Collaborative Innovation Center of Laser Advanced Manufacturing Technology, Shanghai 201620, China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China.
| | - Xiaojiao Yuan
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Yuanhua Zhu
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Xiaojing Lin
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Sambandam Anandan
- Nanomaterials & Solar Energy Conversion Lab, Department of Chemistry, National Institute of Technology, Trichy, Tamil Nadu, India
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10
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Kong L, Zhang X, Wang C, Wan F, Li L. Synergic effects of Cu x O electron transfer co-catalyst and valence band edge control over TiO 2 for efficient visible-light photocatalysis. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(17)62959-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Kong L, Wang C, Wan F, Li L, Zhang X, Liu Y. Transparent Nb-doped TiO2 films with the [001] preferred orientation for efficient photocatalytic oxidation performance. Dalton Trans 2017; 46:15363-15372. [DOI: 10.1039/c7dt03057f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[001]-Oriented Nb-TiO2 films via topotactic transformation from [100]-oriented Nb-TiN exhibit efficient photoactivity due to highly-reactive-facet exposure and increased surface-reactive sites.
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Affiliation(s)
- Lina Kong
- Institute of Material Physics
- Key Laboratory of Display Materials and Photoelectric Devices of Ministry of Education
- Key Laboratory for Optoelectronic Materials and Devices of Tianjin
- College of Materials Science and Engineering
- Tianjin University of Technology
| | - Changhua Wang
- Center for Advanced Optoelectronic Functional Materials Research
- and Key Laboratory of UV-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
- Changchun 130024
- China
| | - Fangxu Wan
- Center for Advanced Optoelectronic Functional Materials Research
- and Key Laboratory of UV-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
- Changchun 130024
- China
| | - Lan Li
- Institute of Material Physics
- Key Laboratory of Display Materials and Photoelectric Devices of Ministry of Education
- Key Laboratory for Optoelectronic Materials and Devices of Tianjin
- College of Materials Science and Engineering
- Tianjin University of Technology
| | - Xintong Zhang
- Center for Advanced Optoelectronic Functional Materials Research
- and Key Laboratory of UV-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
- Changchun 130024
- China
| | - Yichun Liu
- Center for Advanced Optoelectronic Functional Materials Research
- and Key Laboratory of UV-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
- Changchun 130024
- China
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12
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Morita K, Miyazaki S, Numako C, Ikeno S, Sasaki R, Nishimura Y, Ogino C, Kondo A. Characterization of titanium dioxide nanoparticles modified with polyacrylic acid and H 2O 2 for use as a novel radiosensitizer. Free Radic Res 2016; 50:1319-1328. [PMID: 27778515 DOI: 10.1080/10715762.2016.1241879] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An induction of polyacrylic acid-modified titanium dioxide with hydrogen peroxide nanoparticles (PAA-TiO2/H2O2 NPs) to a tumor exerted a therapeutic enhancement of X-ray irradiation in our previous study. To understand the mechanism of the radiosensitizing effect of PAA-TiO2/H2O2 NPs, analytical observations that included DLS, FE-SEM, FT-IR, XAFS, and Raman spectrometry were performed. In addition, highly reactive oxygen species (hROS) which PAA-TiO2/H2O2 NPs produced with X-ray irradiation were quantified by using a chemiluminescence method and a EPR spin-trapping method. We found that PAA-TiO2/H2O2 NPs have almost the same characteristics as PAA-TiO2. Surprisingly, there were no significant differences in hROS generation. However, the existence of H2O2 was confirmed in PAA-TiO2/H2O2 NPs, because spontaneous hROS production was observed w/o X-ray irradiation. In addition, PAA-TiO2/H2O2 NPs had a curious characteristic whereby they absorbed H2O2 molecules and released them gradually into a liquid phase. Based on these results, the H2O2 was continuously released from PAA-TiO2/H2O2 NPs, and then released H2O2 assumed to be functioned indirectly as a radiosensitizing factor.
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Affiliation(s)
- Kenta Morita
- a Department of Chemical Science and Engineering, Graduate School of Engineering , Kobe University , Nada-ku , Kobe , Japan
| | - Serika Miyazaki
- b Graduate School of Science , Chiba University , Inage , Chiba , Japan
| | - Chiya Numako
- b Graduate School of Science , Chiba University , Inage , Chiba , Japan
| | - Shinya Ikeno
- c Graduate School of Life Science and Systems Engineering , Kyushu Institute of Technology , Wakamatsu-ku , Kitakyushu , Japan
| | - Ryohei Sasaki
- d Division of Radiation Oncology , Kobe University Graduate School of Medicine , Chuou-ku , Kobe , Japan
| | - Yuya Nishimura
- e Organization of Advanced Science and Technology, Kobe University , Nada-ku , Kobe , Japan
| | - Chiaki Ogino
- a Department of Chemical Science and Engineering, Graduate School of Engineering , Kobe University , Nada-ku , Kobe , Japan
| | - Akihiko Kondo
- a Department of Chemical Science and Engineering, Graduate School of Engineering , Kobe University , Nada-ku , Kobe , Japan.,e Organization of Advanced Science and Technology, Kobe University , Nada-ku , Kobe , Japan
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13
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Pang S, Huang JG, Su Y, Geng B, Lei SY, Huang YT, Lyu C, Liu XJ. Synthesis and Modification of Zn-doped TiO2Nanoparticles for the Photocatalytic Degradation of Tetracycline. Photochem Photobiol 2016; 92:651-7. [DOI: 10.1111/php.12626] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 07/06/2016] [Indexed: 11/29/2022]
Affiliation(s)
- Shuo Pang
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
| | - Ji-guo Huang
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
| | - Yun Su
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
| | - Bo Geng
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
| | - Su-yuan Lei
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
| | - Yu-ting Huang
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
| | - Cong Lyu
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
| | - Xing-juan Liu
- Key Laboratory of Groundwater Resources and Environment; Ministry of Education; Jilin University; Changchun China
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14
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Niu Y, Li F, Yang K, Qiu T, Wang R, Lin C. Preparation and characterization of sulfated TiO 2 with rhodium modification used in esterification reaction and decomposition of methyl orange. Chin J Chem Eng 2016. [DOI: 10.1016/j.cjche.2015.12.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Piumetti M, Freyria FS, Armandi M, Saracco G, Garrone E, Gonzalez GE, Bonelli B. Catalytic degradation of Acid Orange 7 by H2O2as promoted by either bare or V-loaded titania under UV light, in dark conditions, and after incubating the catalysts in ascorbic acid. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/2055074x.2015.1105618] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Li K, Gao S, Wang Q, Xu H, Wang Z, Huang B, Dai Y, Lu J. In-Situ-Reduced Synthesis of Ti³⁺ Self-Doped TiO₂/g-C₃N₄ Heterojunctions with High Photocatalytic Performance under LED Light Irradiation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:9023-9030. [PMID: 25867955 DOI: 10.1021/am508505n] [Citation(s) in RCA: 214] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A simple one-step calcination route was used to prepare Ti(3+) self-doped TiO2/g-C3N4 heterojunctions by mixture of H2Ti3O7 and melamine. X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), electron spin resonance (ESR) spectroscopy, and UV-Vis diffuse reflectance spectroscopy (UV-vis DRS) technologies were used to characterize the structure, crystallinity, morphology, and chemical state of the as-prepared samples. The absorption of the prepared Ti(3+) self-doped TiO2/g-C3N4 heterojunctions shifted to a longer wavelength region in comparison with pristine TiO2 and g-C3N4. The photocatalytic activities of the heterojunctions were studied by degrading methylene blue under a 30 W visible-light-emitting diode irradiation source. The visible-light photocatalytic activities enhanced by the prepared Ti(3+) self-doped TiO2/g-C3N4 heterojunctions were observed and proved to be better than that of pure TiO2 and g-C3N4. The photocatalysis mechanism was investigated and discussed. The intensive separation efficiency of photogenerated electron-hole in the prepared heterojunction was confirmed by photoluminescence (PL) spectra. The removal rate constant reached 0.038 min(-1) for the 22.3 wt % Ti(3+) self-doped TiO2/g-C3N4 heterojunction, which was 26.76 and 7.6 times higher than that of pure TiO2 and g-C3N4, respectively. The established heterojunction between the interfaces of TiO2 nanoparticles and g-C3N4 nanosheets as well as introduced Ti(3+) led to the rapid electron transfer rate and improved photoinduced electron-hole pair's separation efficiency, resulting in the improved photocatalytic performance of the Ti(3+) self-doped TiO2/g-C3N4 heterojunctions.
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Affiliation(s)
- Kai Li
- †College of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Shanmin Gao
- †College of Chemistry and Materials Science, Ludong University, Yantai 264025, China
- ‡State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Qingyao Wang
- †College of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Hui Xu
- †College of Chemistry and Materials Science, Ludong University, Yantai 264025, China
| | - Zeyan Wang
- ‡State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Baibiao Huang
- ‡State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Ying Dai
- ‡State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Jun Lu
- §Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
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Preparation of Ti3+ self-doped TiO2 nanoparticles and their visible light photocatalytic activity. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(14)60234-5] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Chen J, Yang P, Liao Y, Wang J, Chen H, Sun H, Huang N. Effect of the duration of UV irradiation on the anticoagulant properties of titanium dioxide films. ACS APPLIED MATERIALS & INTERFACES 2015; 7:4423-4432. [PMID: 25679095 DOI: 10.1021/am509006y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Recently, UV irradiation has been reported as a new approach to significantly improve the anticoagulant properties of titanium dioxide (TiO2) films by suppressing fibrinogen adsorption and platelet adhesion. This study focuses on how fibrinogen adsorption of and platelet adhesion to TiO2 films is affected by the duration of UV irradiation. Furthermore, this study intends to describe the link between the suppression effect and the changes in the TiO2 films nature caused by photogenerated reactive oxygen species (ROS). First, we performed UV irradiation in different atmospheres as model 1 to determine the effect of oxygen gas on the anticoagulant properties of TiO2 films. The results showed that the suppression of platelet adhesion induced by UV irradiation depended on the presence of oxygen gas, indicating that ROS were photogenerated, and the ROS-induced surface change was related to the improvement in the anticoagulant ability. Then, we fabricated three other types of TiO2 samples in air by varying the UV irradiation time: (1) model 2, comprising fully UV-irradiated TiO2 films, (2) model 3, comprising partially UV-irradiated TiO2 films, and (3) model 4, comprising fully UV-irradiated TiO2-Si micropatterns. The results indicated that UV irradiation affected the anticoagulant properties of TiO2 films in a time-dependent manner. UV irradiation on TiO2 films for short duration (e.g., 1 min) evidenced a suppression effect on fibrinogen adsorption and platelet adhesion, an effect that could not be the result of photoinduced superhydrophilicity, increased hydroxyl groups (-OH) number, or decomposition of the adsorbed hydrocarbon. When the UV irradiation time was longer, this suppression effect extended from the surface of the UV-irradiated TiO2 films to the surface of the adjacent masked TiO2 films and the nearby Si surface. This result supported that the suppression effect could be related to the changes in the nature of the TiO2 films that were caused by the photogenerated and diffused ROS. Further, this extension of the suppression effect to the Si surface indicated that the photogenerated ROS could be used to improve the anticoagulant properties of other materials. A prolonged UV irradiation time (e.g., 240 min) may enhance the fibrinogen adsorption of and platelet adhesion to TiO2 films, which could be related to the decomposition of the adsorbed hydrocarbon and the increase in the positive charge. However, when comparing the enhancement effect and the suppression effect, the results showed that the latter was the main one to influence fibrinogen adsorption of and platelet adhesion to TiO2 films. This study provides an important basis for understanding the behavior of UV-irradiated TiO2 films as anticoagulant materials.
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Affiliation(s)
- Jiang Chen
- Institute of Biomaterials and Surface Engineering, Key Laboratory for Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University , Chengdu 610031, People's Republic of China
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Savinkina EV, Obolenskaya LN, Kuzmicheva GM, Kabachkov EN, Gainanova AA, Zubavichus YV, Murzin VY, Sadovskaya NV. Introduction of peroxo groups into titania: preparation, characterization and properties of the new peroxo-containing phase. CrystEngComm 2015. [DOI: 10.1039/c5ce01090j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new phase, where peroxo groups are incorporated into titania particles, along with anatase and hydrated η-TiO2 with peroxo groups on the surface of titania nanoparticles were prepared.
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Affiliation(s)
- E. V. Savinkina
- Lomonosov Moscow University of Fine Chemical Technology
- 119571 Moscow, Russia
| | - L. N. Obolenskaya
- Lomonosov Moscow University of Fine Chemical Technology
- 119571 Moscow, Russia
| | - G. M. Kuzmicheva
- Lomonosov Moscow University of Fine Chemical Technology
- 119571 Moscow, Russia
| | - E. N. Kabachkov
- Institute of Problems of Chemical Physics of Russian Academy of Science in Chernogolovka
- Moscow Region, Russia
- Scientific Center in Chernogolovka of Russian Academy of Science
- Moscow Region, Russia
| | - A. A. Gainanova
- Lomonosov Moscow University of Fine Chemical Technology
- 119571 Moscow, Russia
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20
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Synthesis of N–Si co-doped TiO2 nanoparticles for the photodegradation of phenol. REACTION KINETICS MECHANISMS AND CATALYSIS 2014. [DOI: 10.1007/s11144-014-0721-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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Liu X, Xu H, Grabstanowicz LR, Gao S, Lou Z, Wang W, huang B, Dai Y, Xu T. Ti3+ self-doped TiO2−x anatase nanoparticles via oxidation of TiH2 in H2O2. Catal Today 2014. [DOI: 10.1016/j.cattod.2013.08.025] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Efficiency of sensitizing nano-titania with organic dyes and peroxo complexes. APPLIED NANOSCIENCE 2014. [DOI: 10.1007/s13204-014-0299-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Fu R, Gao S, Xu H, Wang Q, Wang Z, Huang B, Dai Y. Fabrication of Ti3+ self-doped TiO2(A) nanoparticle/TiO2(R) nanorod heterojunctions with enhanced visible-light-driven photocatalytic properties. RSC Adv 2014. [DOI: 10.1039/c4ra06152g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ti3+ self-doped TiO2(A)/TiO2(R) heterojunctions were synthesized and the samples exhibit high visible light photocatalytic activity.
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Affiliation(s)
- Rongrong Fu
- College of Chemistry and Materials Science
- Ludong University
- Yantai, China
| | - Shanmin Gao
- College of Chemistry and Materials Science
- Ludong University
- Yantai, China
- State Key Laboratory of Crystal Materials
- Shandong University
| | - Hui Xu
- College of Chemistry and Materials Science
- Ludong University
- Yantai, China
| | - Qingyao Wang
- College of Chemistry and Materials Science
- Ludong University
- Yantai, China
| | - Zeyan Wang
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100, China
| | - Baibiao Huang
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100, China
| | - Ying Dai
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100, China
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24
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Qiu Y, Li X. Synthesis of peroxo-titanium decorated H-titanate-nanotube-based hierarchical microspheres with enhanced visible-light photocatalytic activity in degradation of Rhodamine B. Dalton Trans 2014; 43:14537-41. [DOI: 10.1039/c4dt01654h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Peroxo-titanium decorated H-titanate-nanotube-based hierarchical microspheres were prepared by a hydrothermal method, and they exhibited enhanced visible-light activity.
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Affiliation(s)
- Yong Qiu
- Key Laboratory of Renewable Energy
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- Guangzhou, People's Republic of China
- University of Chinese Academy of Sciences
| | - Xinjun Li
- Key Laboratory of Renewable Energy
- Guangzhou Institute of Energy Conversion
- Chinese Academy of Sciences
- Guangzhou, People's Republic of China
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Sharma RV, Soni KK, Dalai AK. Preparation, characterization and application of sulfated Ti-SBA-15 catalyst for oxidation of benzyl alcohol to benzaldehyde. CATAL COMMUN 2012. [DOI: 10.1016/j.catcom.2012.09.027] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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26
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Cheng YH, Subramaniam VP, Gong D, Tang Y, Highfield J, Pehkonen SO, Pichat P, Schreyer MK, Chen Z. Nitrogen-sensitized dual phase titanate/titania for visible-light driven phenol degradation. J SOLID STATE CHEM 2012. [DOI: 10.1016/j.jssc.2012.07.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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Zou J, Gao J. H(2)O(2)-sensitized TiO(2)/SiO(2) composites with high photocatalytic activity under visible irradiation. JOURNAL OF HAZARDOUS MATERIALS 2011; 185:710-716. [PMID: 20970247 DOI: 10.1016/j.jhazmat.2010.09.077] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2010] [Revised: 08/06/2010] [Accepted: 09/21/2010] [Indexed: 05/30/2023]
Abstract
TiO(2)/SiO(2) composite photocatalysts were prepared by depositing of TiO(2) onto nano-SiO(2) particles. X-ray diffraction (XRD), transmission electron micrograph (TEM), Raman spectrometer, UV-Vis diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy (FT-IR) were employed to characterize the properties of the synthesized TiO(2)/SiO(2) composites. These results indicated that the products without calcination were amorphous, and calcination could enhance the crystallinity of TiO(2). Increases in the amount of TiO(2) would decrease the dispersion in the composites. H(2)O(2)-sensitized TiO(2)/SiO(2) composite photocatalysts could absorb visible light at wavelength below 550 nm. The photocatalytic activity of as-prepared catalysts was characterized by methyl-orange degradation. The results showed the uncalcined composite photocatalysts with amorphous TiO(2) exhibited higher photocatalytic activity under visible light, and the activity of catalysts with TiO(2) content over 30% decreased with increasing of TiO(2) content. Increases in the calcination temperature and TiO(2) content promote the formation of bulk TiO(2) and result in a decrease in activity.
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Affiliation(s)
- Jian Zou
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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