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Kubiak A, Fuks H, Szymczyk A, Frankowski M, Cegłowski M. Development of a novel LED-IoT photoreactor for enhanced removal of carbamazepine waste driven by solar energy. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 362:121331. [PMID: 38833931 DOI: 10.1016/j.jenvman.2024.121331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 04/22/2024] [Accepted: 05/30/2024] [Indexed: 06/06/2024]
Abstract
This study introduces an innovative LED-IoT photoreactor, representing a significant advancement in response to the demand for sustainable water purification. The integration of LED-IoT installations addresses the challenge of intermittent sunlight availability, employing LEDs with a spectrum mimicking natural sunlight. Passive Infra-Red (PIR) sensors and Internet of things (IoT) technology ensure consistent radiation intensity, with the LED deactivating in ample sunlight and activating in its absence. Utilizing a visible light-absorbing photocatalyst developed through sol-gel synthesis and mild-temperature calcination, this research demonstrates a remarkable carbamazepine removal efficiency exceeding 95% under LED-IoT system illumination, compared to less than 90% efficiency with sunlight alone, within a 6-h exposure period. Moreover, the designed photocatalytic system achieves over 60% mineralization of carbamazepine after 12 h. Notably, the photocatalyst demonstrated excellent stability with no performance loss during five further cycles. Furthermore, integration with renewable energy sources facilitated continuous operation beyond daylight hours, enhancing the system's applicability in real-world water treatment scenarios. A notable application of the LED-IoT system at an operating sewage treatment plant showed nearly 80% efficiency in carbamazepine removal from sewage in the secondary settling tank after 6 h of irradiation, coupled with nearly 40% mineralization efficiency. Additionally, physicochemical analyses such as XPS and STA-FTIR confirm that the carbamazepine photooxidation process does not affect the surface of the photocatalyst, showing no adsorption for degradation products.
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Affiliation(s)
- Adam Kubiak
- Adam Mickiewicz University, Poznan, Faculty of Chemistry, Uniwersytetu Poznanskiego 8, PL-61614, Poznan, Poland.
| | - Hubert Fuks
- Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Al. Piastów 19, PL-70310, Szczecin, Poland
| | - Anna Szymczyk
- Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Al. Piastów 19, PL-70310, Szczecin, Poland
| | - Marcin Frankowski
- Adam Mickiewicz University, Poznan, Faculty of Chemistry, Uniwersytetu Poznanskiego 8, PL-61614, Poznan, Poland
| | - Michał Cegłowski
- Adam Mickiewicz University, Poznan, Faculty of Chemistry, Uniwersytetu Poznanskiego 8, PL-61614, Poznan, Poland
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Kubiak A, Cegłowski M. Unraveling the impact of microwave-assisted techniques in the fabrication of yttrium-doped TiO 2 photocatalyst. Sci Rep 2024; 14:262. [PMID: 38168912 PMCID: PMC10761958 DOI: 10.1038/s41598-023-51078-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 12/30/2023] [Indexed: 01/05/2024] Open
Abstract
In this study, we investigate the role of microwave technology in the fabrication of yttrium-doped TiO2 through a comparative analysis of hydrothermal techniques. Microwave-assisted hydrothermal synthesis offers advantages, but a comprehensive comparison between microwave-assisted and conventional methods is lacking. Therefore, in our investigation, we systematically evaluate and compare the morphological, structural, and optical properties of yttrium-doped TiO2 samples synthesized using both techniques. The X-ray diffraction (XRD) patterns confirm the anatase tetragonal structure of the synthesized TiO2-Y systems, while the larger ion radius of yttrium (Y3+) compared to titanium (Ti4+) presents challenges for yttrium to incorporate into the TiO2 lattice. The X-ray Photoelectron Spectroscopy (XPS) revealed a significant difference in the atomic content of yttrium between the TiO2-Y systems synthesized using microwave-assisted and conventional methods. This finding suggests that the rapid microwave method is more effective in successfully doping TiO2 with rare earth metals such as yttrium. The photo-oxidation of carbamazepine (CBZ) using TiO2-Y systems demonstrated high efficiency under UV-LED light. Microwave-synthesized TiO2-Y demonstrates improved photo-oxidation efficiency of CBZ, attributed to enhanced absorption, charge transfer, surface area, and crystallite size. Overall, the microwave-synthesized TiO2-Y systems showed promising performance for the photo-oxidation of CBZ, with improved efficiency compared to conventional synthesis methods.
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Affiliation(s)
- Adam Kubiak
- Faculty of Chemistry, Adam Mickiewicz University, Poznan, Uniwersytetu Poznanskiego 8, 61614, Poznan, Poland.
| | - Michał Cegłowski
- Faculty of Chemistry, Adam Mickiewicz University, Poznan, Uniwersytetu Poznanskiego 8, 61614, Poznan, Poland
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Li C, Qiu T, Li C, Cheng B, Jin M, Zhou G, Giersig M, Wang X, Gao J, Akinoglu EM. Highly Flexible and Acid-Alkali Resistant TiN Nanomesh Transparent Electrodes for Next-Generation Optoelectronic Devices. ACS NANO 2023; 17:24763-24772. [PMID: 37901960 DOI: 10.1021/acsnano.3c05211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Transparent electrodes are vital for optoelectronic devices, but their development has been constrained by the limitations of existing materials such as indium tin oxide (ITO) and newer alternatives. All face issues of robustness, flexibility, conductivity, and stability in harsh environments. Addressing this challenge, we developed a flexible, low-cost titanium nitride (TiN) nanomesh transparent electrode showcasing exceptional acid-alkali resistance. The TiN nanomesh electrode, created by depositing a TiN coating on a naturally cracked gel film substrate via a sputtering method, maintains a stable electrical performance through thousands of bending cycles. It exhibits outstanding chemical stability, resisting strong acid and alkali corrosion, which is a key hurdle for current electrodes when in contact with acidic/alkaline materials and solvents during device fabrication. This, coupled with superior light transmission and conductivity (88% at 550 nm with a sheet resistance of ∼200 Ω/sq), challenges the reliance on conventional materials. Our TiN nanomesh electrode, successfully applied in electric heaters and electrically controlled thermochromic devices, offers broad potential beyond harsh environment applications. It enables alternative possibilities for the design and fabrication of future optoelectronics for advancements in this pivotal field.
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Affiliation(s)
- Caitao Li
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, People's Republic of China
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526238, Guangdong, People's Republic of China
| | - Tengfei Qiu
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Cong Li
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, Academy of Advanced Optoelectronics, South China Normal University Guangzhou 510006, People's Republic of China
| | - Baoyuan Cheng
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, People's Republic of China
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526238, Guangdong, People's Republic of China
| | - Mingliang Jin
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, People's Republic of China
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526238, Guangdong, People's Republic of China
| | - Guofu Zhou
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, People's Republic of China
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526238, Guangdong, People's Republic of China
| | - Michael Giersig
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526238, Guangdong, People's Republic of China
- Institute of Fundamental Technological Research, Polish Academy of Sciences, 02-106 Warsaw, Poland
| | - Xin Wang
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, People's Republic of China
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526238, Guangdong, People's Republic of China
| | - Jinwei Gao
- Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Optical Information Materials and Technology, Academy of Advanced Optoelectronics, South China Normal University Guangzhou 510006, People's Republic of China
| | - Eser Metin Akinoglu
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, People's Republic of China
- International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing 526238, Guangdong, People's Republic of China
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Serov DA, Khabatova VV, Vodeneev V, Li R, Gudkov SV. A Review of the Antibacterial, Fungicidal and Antiviral Properties of Selenium Nanoparticles. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5363. [PMID: 37570068 PMCID: PMC10420033 DOI: 10.3390/ma16155363] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/21/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023]
Abstract
The resistance of microorganisms to antimicrobial drugs is an important problem worldwide. To solve this problem, active searches for antimicrobial components, approaches and therapies are being carried out. Selenium nanoparticles have high potential for antimicrobial activity. The relevance of their application is indisputable, which can be noted due to the significant increase in publications on the topic over the past decade. This review of research publications aims to provide the reader with up-to-date information on the antimicrobial properties of selenium nanoparticles, including susceptible microorganisms, the mechanisms of action of nanoparticles on bacteria and the effect of nanoparticle properties on their antimicrobial activity. This review describes the most complete information on the antiviral, antibacterial and antifungal effects of selenium nanoparticles.
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Affiliation(s)
- Dmitry A. Serov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilove St. 38, 119991 Moscow, Russia; (D.A.S.); (V.V.K.)
| | - Venera V. Khabatova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilove St. 38, 119991 Moscow, Russia; (D.A.S.); (V.V.K.)
| | - Vladimir Vodeneev
- Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, Gagarin av. 23, 603105 Nizhny Novgorod, Russia;
| | - Ruibin Li
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, China;
| | - Sergey V. Gudkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilove St. 38, 119991 Moscow, Russia; (D.A.S.); (V.V.K.)
- Institute of Biology and Biomedicine, Lobachevsky State University of Nizhny Novgorod, Gagarin av. 23, 603105 Nizhny Novgorod, Russia;
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Shan YD, Wu SH, Wang YL, Wang C, Zhi SQ, Liu Y, Han X. Selective Oxidation of Cyclohexane to Cyclohexanol/Cyclohexanone by Surface Peroxo Species on Cu-Mesoporous TiO 2. Inorg Chem 2023; 62:4872-4882. [PMID: 36916853 DOI: 10.1021/acs.inorgchem.2c04196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Selective oxidation of cyclohexane to cyclohexanol/cyclohexanone (KA-oil) is an important chemical process, which is still constrained by low conversion and selectivity and high energy consumption. In this study, Cu-doped mesoporous TiO2 (Cu-MT) has been successfully synthesized via calcinating MIL-125(Ti) doped with copper acetylacetonate, which shows high reactivity in selective oxidation of cyclohexane to KA-oil by persulfate (PS) with the desirable cyclohexane conversion of 16.8% and a selectivity of 98.0% under mild conditions and the low ratio of PS/cyclohexane of 1:1. A series of characterizations and density functional theory calculations reveal that the doped Cu(I,II) on Cu-MT is the reactive site for non-radical activation of PS with the moderate elongation of the O-O bond in PS, which then abstracts 1H (1H+ + 1e-) from cyclohexane to form Cy• and eventually KA-oil. This study gives new insight on the importance of moderately activated PS in selective oxidation of C-H.
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Affiliation(s)
- Yu-Dong Shan
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
| | - Song-Hai Wu
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
| | - Yu-Le Wang
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
| | - Cong Wang
- Heibei Key Laboratory of Hazardous Chemicals Safety and Control Technology, School of Chemical and Environmental Engineering, North China Institute of Science and Technology, Langfang, Hebei 065201, China
| | - Shao-Qi Zhi
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
| | - Yong Liu
- School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P.R. China
| | - Xu Han
- Tianjin Key Laboratory of Chemical Process Safety and Equipment Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
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Peñas-Garzón M, Gómez-Avilés A, Álvarez-Conde J, Bedia J, García-Frutos EM, Belver C. Azaindole grafted titanium dioxide for the photodegradation of pharmaceuticals under solar irradiation. J Colloid Interface Sci 2023; 629:593-603. [DOI: 10.1016/j.jcis.2022.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/14/2022] [Accepted: 09/02/2022] [Indexed: 11/24/2022]
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Rabani I, Jang HN, Park YJ, Tahir MS, Lee YB, Moon EY, Song JW, Seo YS. Titanium dioxide incorporated in cellulose nanofibers with enhanced UV blocking performance by eliminating ROS generation. RSC Adv 2022; 12:33653-33665. [PMID: 36505717 PMCID: PMC9682890 DOI: 10.1039/d2ra06444h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 11/14/2022] [Indexed: 11/24/2022] Open
Abstract
The preparation of sunblocks with dispersion stability, ultraviolet blocking, and photocompatibility remains a considerable challenge. Plant-derived natural polymers, such as cellulose nanofibers (CNF), show versatile traits, including long aspect ratio, hydrophilic nature, resource abundance, and low material cost. In the present study, a facile and cost-effective strategy is reported for the fabrication of nanostructured inorganic materials by incorporating natural polymers as interspersed, systematically nanosized titanium dioxide (TiO2) particles onto CNF. Among all experiments, the optimized TiO2@CNF3 showed higher ultraviolet blocking performance and less whitening effect. The outstanding performance is attributed to the engineering of equally dispersed nano-sized TiO2 particles on the CNF surface and stable dispersion. Significantly, TiO2@CNF3 exhibited excellent compatibility with avobenzone (80%), an oil-soluble ingredient used in sunblock products, illustrating the photoprotection enhancement under ultraviolet A (UVA) and ultraviolet B (UVB). Moreover, only 14.8% rhodamine B (Rho-B) dye degraded through photocatalytic oxidation process with the TiO2@CNF3, which is negligible photocatalytic activity compared to that of TiO2 (95% dye degraded). Furthermore, commercial inorganic and organic sunblock products with SPF lifetimes of 35+ and 50+ were modified using CNF, significantly enhancing the transmittance performance compared to that of the pure sunblock. However, it was also observed that hydrophilic CNF tended to demulsify the creams due to electrostatic disequilibrium. This CNF-based modified TiO2 system is a new window to replace effective sunblock products in high-value-added applications, such as cosmetics.
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Affiliation(s)
- Iqra Rabani
- Interface Lab, Department of Nanotechnology and Advanced Materials Engineering, Sejong University Seoul 05006 Korea
| | - Ha-Na Jang
- Interface Lab, Department of Nanotechnology and Advanced Materials Engineering, Sejong University Seoul 05006 Korea
| | - Ye-Jee Park
- Interface Lab, Department of Nanotechnology and Advanced Materials Engineering, Sejong University Seoul 05006 Korea
| | - Muhammad Shoaib Tahir
- Interface Lab, Department of Nanotechnology and Advanced Materials Engineering, Sejong University Seoul 05006 Korea
| | - Yun-Bi Lee
- Interface Lab, Department of Nanotechnology and Advanced Materials Engineering, Sejong University Seoul 05006 Korea
| | - Eun-Yi Moon
- Department of Bioscience and Biotechnology, Sejong University Seoul 05006 Korea
| | - Jin Won Song
- Fine Lab Co., Ltd. 97 Sinilseo-ro 126 beon-gil Daedeok-gu Daejeon Korea
| | - Young-Soo Seo
- Interface Lab, Department of Nanotechnology and Advanced Materials Engineering, Sejong University Seoul 05006 Korea
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Filip Edelmannová M, Reli M, Nadrah P, Rozman N, Ricka R, Sever Škapin A, Nosan M, Lavrenčič Štangar U, Kočí K. A comparative study of TiO2 preparation method on their photocatalytic activity for CO2 reduction. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Gudkov SV, Serov DA, Astashev ME, Semenova AA, Lisitsyn AB. Ag 2O Nanoparticles as a Candidate for Antimicrobial Compounds of the New Generation. Pharmaceuticals (Basel) 2022; 15:ph15080968. [PMID: 36015116 PMCID: PMC9415021 DOI: 10.3390/ph15080968] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 07/29/2022] [Accepted: 08/04/2022] [Indexed: 12/16/2022] Open
Abstract
Antibiotic resistance in microorganisms is an important problem of modern medicine which can be solved by searching for antimicrobial preparations of the new generation. Nanoparticles (NPs) of metals and their oxides are the most promising candidates for the role of such preparations. In the last few years, the number of studies devoted to the antimicrobial properties of silver oxide NPs have been actively growing. Although the total number of such studies is still not very high, it is quickly increasing. Advantages of silver oxide NPs are the relative easiness of production, low cost, high antibacterial and antifungal activities and low cytotoxicity to eukaryotic cells. This review intends to provide readers with the latest information about the antimicrobial properties of silver oxide NPs: sensitive organisms, mechanisms of action on microorganisms and further prospects for improving the antimicrobial properties.
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Affiliation(s)
- Sergey V. Gudkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
- Correspondence:
| | - Dmitriy A. Serov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Maxim E. Astashev
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Anastasia A. Semenova
- V. M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, 109316 Moscow, Russia
| | - Andrey B. Lisitsyn
- V. M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, 109316 Moscow, Russia
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Jafari L, Abdollahi F, Feizi H, Adl S. Improved Marjoram (Origanum majorana L.) Tolerance to Salinity with Seed Priming Using Titanium Dioxide (TiO2). IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY, TRANSACTIONS A: SCIENCE 2022. [DOI: 10.1007/s40995-021-01249-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sun H, Hu L, Li Z, Lang J, Wang C, Liu X, Hang Hu Y, Jin F. Ultra‐stable Molecular Interface SiW
12
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/TiO
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Catalyst Derived from Keggin‐type Polyoxometalates for Photocatalytic Conversion of Methane to Oxygenates. ChemCatChem 2022. [DOI: 10.1002/cctc.202200001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Helong Sun
- School of Environmental Science and Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Lufa Hu
- School of Environmental Science and Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Zhangyang Li
- School of Environmental Science and Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Junyu Lang
- School of Physical Science and Technology Shanghai Tech University 393 Huaxia Middle Road Shanghai 201210 P. R. China
| | - Chunling Wang
- School of Environmental Science and Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
| | - Xiaohao Liu
- Department of Chemical Engineering School of Chemical and Material Engineering Jiangnan University 1800, Lihu Avenue Wuxi 214122 P. R. China
| | - Yun Hang Hu
- Department of Materials Science and Engineering Michigan Technological University 1400 Townsend Drive Houghton MI 49931-1295 USA
| | - Fangming Jin
- School of Environmental Science and Engineering Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 P. R. China
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Zafar Z, Fatima R, Kim JO. Effect of HCl treatment on physico-chemical properties and photocatalytic performance of Fe-TiO 2 nanotubes for hexavalent chromium reduction and dye degradation under visible light. CHEMOSPHERE 2021; 284:131247. [PMID: 34192662 DOI: 10.1016/j.chemosphere.2021.131247] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 06/08/2021] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
In this study, we prepared Fe2O3/TNT composite (Fe-TNT) foil by combining anodization with the hydrothermal method. Photocatalytic reaction was restricted by a cluster of iron particles accumulated on the foil surface and the photocatalytic reaction sites reduces. Herein, using XPS determined that these iron particles are composed of iron oxide. An acid treatment, hydrochloric acid (HCl) was used to successfully remove the surface accumulation of iron oxide particles on the photocatalyst. Using cleaned Fe-TNT foil, the photocatalytic activity of 5 mg/L Congo red (CR) and hexavalent chromium reduction was significantly increased under visible irradiation. In addition, the influence of different aspects such as pH, the concentration of Fe, and the effect of different acid treatment time was evaluated. Removing the surface accumulated iron oxide and adjusting the pH in acidic medium, 73% hexavalent chromium reduction achieved within 180 min. The reusability was also explored by monotonous CR degradation. The CR degradation using Fe0.25-TNT was lessened from 78% in the first cycle to 71% in the 3rd cycle. It was also confirmed experimentally that photocatalytic activity improvement of HCl treated Fe-TNT was not due to alternation in nanotube structure.
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Affiliation(s)
- Zulakha Zafar
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul, Republic of Korea
| | - Rida Fatima
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul, Republic of Korea
| | - Jong-Oh Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul, Republic of Korea.
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Katsube D, Ohno S, Takayanagi S, Ojima S, Maeda M, Origuchi N, Ogawa A, Ikeda N, Aoyagi Y, Kabutoya Y, Kyungmin K, Linfeng H, Fengxuan L, Tsuda Y, Yoshida H, Nishi S, Sakamoto T, Inami E, Yoshigoe A, Abe M. Oxidation of Anatase TiO 2(001) Surface Using Supersonic Seeded Oxygen Molecular Beam. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12313-12317. [PMID: 34644079 DOI: 10.1021/acs.langmuir.1c01752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We investigated the oxidation of oxygen vacancies at the surface of anatase TiO2(001) using a supersonic seeded molecular beam (SSMB) of oxygen. The oxygen vacancies at the top surface and subsurface could be eliminated by the supply of oxygen using an SSMB. Oxygen vacancies are present on the surface of anatase TiO2(001) when it is untreated before transfer to a vacuum chamber. These vacancies, which are stable in the as-grown condition, could also be effectively eliminated by using the oxygen SSMB.
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Affiliation(s)
- Daiki Katsube
- Department of Electrical, Electronics and Information Engineering, Nagaoka University of Technology, 1603-1 Kamitomiokamachi, Nagaoka, Niigata 940-2188, Japan
| | - Shinya Ohno
- Department of Physic, Faculty of Engineerings, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Shuhei Takayanagi
- Department of Physic, Faculty of Engineerings, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Shoki Ojima
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Motoyasu Maeda
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Naoki Origuchi
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Arata Ogawa
- Department of Physic, Faculty of Engineerings, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Natsuki Ikeda
- Department of Physic, Faculty of Engineerings, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Yoshihide Aoyagi
- Department of Physic, Faculty of Engineerings, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Yuito Kabutoya
- Department of Electrical, Electronics and Information Engineering, Nagaoka University of Technology, 1603-1 Kamitomiokamachi, Nagaoka, Niigata 940-2188, Japan
| | - Kim Kyungmin
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Hou Linfeng
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Li Fengxuan
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Yasutaka Tsuda
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Hikaru Yoshida
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Shizuka Nishi
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Tetsuya Sakamoto
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Eiichi Inami
- School of Systems Engineering, Kochi University of Technology, 185 Miyanokuchi, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Akitaka Yoshigoe
- Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | - Masayuki Abe
- Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
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14
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Zhang Y, Lu D, Kumar Kondamareddy K, Zhang B, Wu Q, Zhou M, Zeng Y, Wang J, Pei H, D N, Hao H, Huang C, Fan H. Controllable preparation and efficient visible-light-driven photocatalytic removal of Cr(VI) using optimized Cd0.5Zn0.5S nanoparticles decorated H-Titanate nanotubes. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.08.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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15
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Wang J, Ma Y, Mahapatra M, Kang J, Senanayake SD, Tong X, Stacchiola DJ, White MG. Surface structure of mass-selected niobium oxide nanoclusters on Au(111). NANOTECHNOLOGY 2021; 32:475601. [PMID: 34380123 DOI: 10.1088/1361-6528/ac1cc0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 08/10/2021] [Indexed: 06/13/2023]
Abstract
The structures formed by the deposition of mass-selected niobium oxide clusters, Nb3Oy(y = 5, 6, 7), onto Au(111) were studied by scanning tunneling microscopy. The as-deposited Nb3O7clusters assemble into large dendritic structures that grow on the terraces as well as extend from the top and bottom of step edges. The Nb3O6cluster also forms dendritic assemblies but they are generally much smaller in size. The assemblies are composed of smaller discrete structures (<1 nm) which are likely to be single clusters. The dendritic assemblies for both the Nb3O7and Nb3O6clusters have fractal dimensions of about 1.7 which is very close to that expected for simple diffusion limited aggregation. Annealing the Nb3O7,6/Au(111) surfaces up to 550 K results in changes in assembly sizes and increases in heights, while heating to 700 results in the disruption of the assemblies into smaller structures. By contrast, the as-deposited Nb3O5/Au(111) surface at RT exhibits compact cluster structures which become 3D nanoparticles when annealed above 550 K. Differences in the observed surface structures and thermal stability are attributed to differences in metal-oxygen stoichiometry which can influence cluster binding energies, mobility and inter-cluster interactions.
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Affiliation(s)
- Jason Wang
- Department of Chemistry, Stony Brook University, Stony Brook 11794 NY, United States of America
| | - Yilin Ma
- Department of Chemistry, Stony Brook University, Stony Brook 11794 NY, United States of America
| | - Mausumi Mahapatra
- Chemistry Division, Brookhaven National Laboratory, Upton 11973 NY, United States of America
| | - Jindong Kang
- Department of Chemistry, Stony Brook University, Stony Brook 11794 NY, United States of America
| | - Sanjaya D Senanayake
- Chemistry Division, Brookhaven National Laboratory, Upton 11973 NY, United States of America
| | - Xiao Tong
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton 11973 NY, United States of America
| | - Dario J Stacchiola
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton 11973 NY, United States of America
| | - Michael G White
- Department of Chemistry, Stony Brook University, Stony Brook 11794 NY, United States of America
- Chemistry Division, Brookhaven National Laboratory, Upton 11973 NY, United States of America
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16
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McClimon JB, Milne Z, Hasz K, Carpick RW. Linescan Lattice Microscopy: A Technique for the Accurate Measurement and Mapping of Lattice Spacing and Strain with Atomic Force Microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:8261-8269. [PMID: 34170699 DOI: 10.1021/acs.langmuir.1c01019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Lateral resolution and accuracy in scanning probe microscopies are limited by the nonideality of piezoelectric scanning elements due to phenomena including nonlinearity, hysteresis, and creep. By taking advantage of the well-established atomic-scale stick-slip phenomenon in contact-mode atomic force microscopy, we have developed a method for simultaneously indexing and measuring the spacing of surface atomic lattices using only Fourier analysis of unidirectional linescan data. The first step of the technique is to calibrate the X-piezo response using the stick-slip behavior itself. This permits lateral calibration to better than 1% error between 2.5 nm and 9 μm, without the use of calibration gratings. Lattice indexing and lattice constant determination are demonstrated in this way on the NaCl(001) crystal surface. After piezo calibration, lattice constant measurement on a natural bulk MoS2(0001) surface is demonstrated with better than 0.2% error. This is used to measure nonuniform thermal mismatch strain for chemical vapor deposition (CVD)-grown monolayer MoS2 as small as 0.5%. A spatial mapping technique for the lattice spacing is developed and demonstrated, with absolute accuracy better than 0.2% and relative accuracy better than 0.1%, within a map of 12.5 × 12.5 nm2 pixels using bulk highly oriented pyrolytic graphite (HOPG) and MoS2 as reference materials.
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Affiliation(s)
- J Brandon McClimon
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Zac Milne
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Kathryn Hasz
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Robert W Carpick
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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17
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Huynh TT, Huang WH, Tsai MC, Nugraha M, Haw SC, Lee JF, Su WN, Hwang BJ. Synergistic Hybrid Support Comprising TiO 2–Carbon and Ordered PdNi Alloy for Direct Hydrogen Peroxide Synthesis. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05485] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tan-Thanh Huynh
- NanoElectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Wei-Hsiang Huang
- NanoElectrochemistry Laboratory, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Meng-Che Tsai
- NanoElectrochemistry Laboratory, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Mawan Nugraha
- NanoElectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Shu-Chih Haw
- National Synchrotron Radiation Research Center, Hsin-Chu 30076, Taiwan
| | - Jyh-Fu Lee
- National Synchrotron Radiation Research Center, Hsin-Chu 30076, Taiwan
| | - Wei-Nien Su
- NanoElectrochemistry Laboratory, Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan
| | - Bing Joe Hwang
- NanoElectrochemistry Laboratory, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
- National Synchrotron Radiation Research Center, Hsin-Chu 30076, Taiwan
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18
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Garcia Diosa JA, Gonzalez Orive A, Weinberger C, Schwiderek S, Knust S, Tiemann M, Grundmeier G, Keller A, Camargo Amado RJ. TiO 2 nanoparticle coatings on glass surfaces for the selective trapping of leukemia cells from peripheral blood. J Biomed Mater Res B Appl Biomater 2021; 109:2142-2153. [PMID: 33982864 DOI: 10.1002/jbm.b.34862] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 04/03/2021] [Accepted: 04/30/2021] [Indexed: 01/15/2023]
Abstract
Photodynamic therapy (PDT) using TiO2 nanoparticles has become an important alternative treatment for different types of cancer due to their high photocatalytic activity and high absorption of UV-A light. To potentiate this treatment, we have coated commercial glass plates with TiO2 nanoparticles prepared by the sol-gel method (TiO2 -m), which exhibit a remarkable selectivity for the irreversible trapping of cancer cells. The physicochemical properties of the deposited TiO2 -m nanoparticle coatings have been characterized by a number of complementary surface-analytical techniques and their interaction with leukemia and healthy blood cells were investigated. Scanning electron and atomic force microscopy verify the formation of a compact layer of TiO2 -m nanoparticles. The particles are predominantly in the anatase phase and have hydroxyl-terminated surfaces as revealed by Raman, X-ray photoelectron, and infrared spectroscopy, as well as X-ray diffraction. We find that lymphoblastic leukemia cells adhere to the TiO2 -m coating and undergo amoeboid-like migration, whereas lymphocytic cells show distinctly weaker interactions with the coating. This evidences the potential of this nanomaterial coating to selectively trap cancer cells and renders it a promising candidate for the development of future prototypes of PDT devices for the treatment of leukemia and other types of cancers with non-adherent cells.
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Affiliation(s)
| | - Alejandro Gonzalez Orive
- Department of Chemistry, Materials and Nanotechnology Institute, University of La Laguna, Tenerife, Spain
| | | | - Sabrina Schwiderek
- Technical and Macromolecular Chemistry, Paderborn University, Paderborn, Germany
| | - Steffen Knust
- Technical and Macromolecular Chemistry, Paderborn University, Paderborn, Germany
| | - Michael Tiemann
- Inorganic Chemistry, Paderborn University, Paderborn, Germany
| | - Guido Grundmeier
- Technical and Macromolecular Chemistry, Paderborn University, Paderborn, Germany
| | - Adrian Keller
- Technical and Macromolecular Chemistry, Paderborn University, Paderborn, Germany
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19
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Zafar Z, Kim JO. Optimization of hydrothermal synthesis of Fe-TiO 2 nanotube arrays for enhancement in visible light using an experimental design methodology. ENVIRONMENTAL RESEARCH 2020; 189:109908. [PMID: 32980004 DOI: 10.1016/j.envres.2020.109908] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/27/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
We designed an experiment to optimize the hydrothermal modification of iron on anodized TiO2 nanotubes. A central composite design that included five design points was used to determine the condition parameters for hydrothermal reaction time (1-5 h) and hydrothermal temperature (120-180 °C). A statistical method was used to observe the effects of hydrothermal conditions on the material properties and photocatalytic activity of a Fe-TiO2 nanotube catalyst. Scanning electron microscopic (SEM) analysis shows the iron is doped on the TNTs, which is further confirmed by energy-dispersive X-ray spectroscopy. X-ray diffraction indicate the existing states of iron in the form of iron oxide on the TNT. The maximum degradation efficiency (92.3%) was achieved at a hydrothermal temperature of 150 °C and time of 3 h. It is found that the optimal medication of the Fe-TNT catalyst occurred at a particular combination of temperature (150 °C) and reaction time (3 h), that provide the more active sites for iron to enter the crystal lattice of TNT, and that the maximum CR degradation could be achieved.
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Affiliation(s)
- Zulakha Zafar
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul, Republic of Korea
| | - Jong-Oh Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul, Republic of Korea.
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20
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Preparation of TiO2/CNTs nanocomposite and its catalytic performance on the thermal decomposition of ammonium perchlorate. TRANSIT METAL CHEM 2020. [DOI: 10.1007/s11243-020-00406-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Goodman KR, Wang J, Ma Y, Tong X, Stacchiola DJ, White MG. Morphology and reactivity of size-selected titanium oxide nanoclusters on Au(111). J Chem Phys 2020; 152:054714. [DOI: 10.1063/1.5134453] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Kenneth R. Goodman
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, USA
| | - Jason Wang
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, USA
| | - Yilin Ma
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, USA
| | - Xiao Tong
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Dario J. Stacchiola
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Michael G. White
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, USA
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, USA
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22
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Siliveri S, Chirra S, Tyagi C, Gandamalla A, Adepu AK, Goskula S, Gujjula SR, Venkatathri N. New Porous High Surface Area, TiO
2
Anatase/SAPO‐35 Mild Brønsted Acidic Nanocomposite: Synthesis, Characterization and Studies on it's Enhanced Photocatalytic Activity. ChemistrySelect 2019. [DOI: 10.1002/slct.201902134] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Suresh Siliveri
- Department of ChemistryNational Institute of Technology, Warangal Telangana 506 004 India
| | - Suman Chirra
- Department of ChemistryNational Institute of Technology, Warangal Telangana 506 004 India
| | - Chinkit Tyagi
- Department of ChemistryNational Institute of Technology, Warangal Telangana 506 004 India
- National Chemical LaboratoryCatalysis Division Pune, Maharashtra 411 008 India
| | - Ambedkar Gandamalla
- Department of ChemistryNational Institute of Technology, Warangal Telangana 506 004 India
| | - Ajay Kumar Adepu
- Department of ChemistryNational Institute of Technology, Warangal Telangana 506 004 India
- Indian Institute of Chemical TechnologyCatalysis Division, Hyderabad Telangana 500 007 India
| | - Srinath Goskula
- Department of ChemistryNational Institute of Technology, Warangal Telangana 506 004 India
| | - Sripal Reddy Gujjula
- Department of ChemistryNational Institute of Technology, Warangal Telangana 506 004 India
| | - Narayanan Venkatathri
- Department of ChemistryNational Institute of Technology, Warangal Telangana 506 004 India
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23
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Wang K, Zhao W, Li H, Li D, Liu Z, Wang D, Liu S(F. Oxidation, reduction, and inert gases plasma-modified defects in TiO2 as electron transport layer for planar perovskite solar cells. J CO2 UTIL 2019. [DOI: 10.1016/j.jcou.2019.04.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Liu B, Zhao X, Yu J, Parkin IP, Fujishima A, Nakata K. Intrinsic intermediate gap states of TiO2 materials and their roles in charge carrier kinetics. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2019. [DOI: 10.1016/j.jphotochemrev.2019.02.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Katal R, Kholghi Eshkalak S, Masudy-Panah S, Kosari M, Saeedikhani M, Zarinejad M, Ramakrishna S. Evaluation of Solar-Driven Photocatalytic Activity of Thermal Treated TiO₂ under Various Atmospheres. NANOMATERIALS 2019; 9:nano9020163. [PMID: 30699943 PMCID: PMC6409930 DOI: 10.3390/nano9020163] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 01/23/2019] [Accepted: 01/25/2019] [Indexed: 12/02/2022]
Abstract
In this report, the photocatalytic activity of P25 has been explored and the influence of thermal treatment under various atmospheres (air, vacuum and hydrogen) were discussed. The samples’ characteristics were disclosed by means of various instruments including X-ray diffraction (XRD), Electron paramagnetic resonance (EPR), X-ray photoelectron spectroscopy (XPS) and UV–vis. This study also accentuates various states of the oxygen vacancy density formed inside the samples as well as the colour turning observed in treated P25 under various atmospheres. Produced coloured TiO2 samples were then exploited for their photocatalytic capability concerning photodegradation of methylene blue (MB) using air mass (AM) 1.5 G solar light irradiation. Our findings revealed that exceptional photocatalytic activity of P25 is related to the thermal treatment. Neither oxygen vacancy formation nor photocatalytic activity enhancement was observed in the air-treated sample. H2-treated samples have shown better photoactivity which even could be further improved by optimizing treatment conditions to achieve the advantages of the positive role of oxygen vacancy (O-vacancy at higher concentration than optimum acts as electron trapping sites). The chemical structure and stability of the samples were also studied. There was no sign of deteriorating of O2-vacancies inside the samples after 6 months. High stability of thermal treated samples in terms of both long and short-term time intervals is another significant feature of the produced photocatalyst.
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Affiliation(s)
- Reza Katal
- Department of Civil & Environmental Engineering, National University of Singapore, Singapore 117576, Singapore.
| | - Saeideh Kholghi Eshkalak
- Department of Mechanical Engineering, Center for Nanofibers and Nanotechnology, National University of Singapore, Singapore 117575, Singapore.
| | - Saeid Masudy-Panah
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 119260, Singapore.
| | - Mohammadreza Kosari
- Department of Chemical and Biomolecular Engineering, Faculty of Engineering, National University of Singapore, Singapore 119260, Singapore.
| | - Mohsen Saeedikhani
- Department of Materials Science and Engineering, National University of Singapore, Singapore 117583, Singapore.
| | - Mehrdad Zarinejad
- Singapore Institute of Manufacturing Technology (SIMTech), A*STAR (Agency for Science, Technology and Research), Singapore 138634, Singapore.
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, Center for Nanofibers and Nanotechnology, National University of Singapore, Singapore 117575, Singapore.
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26
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Yoo D, Kim Y, Min M, Ahn GH, Lien DH, Jang J, Jeong H, Song Y, Chung S, Javey A, Lee T. Highly Reliable Superhydrophobic Protection for Organic Field-Effect Transistors by Fluoroalkylsilane-Coated TiO 2 Nanoparticles. ACS NANO 2018; 12:11062-11069. [PMID: 30303370 DOI: 10.1021/acsnano.8b05224] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
One of the long-standing problems in the field of organic electronics is their instability in an open environment, especially their poor water resistance. For the reliable operation of organic devices, introducing an effective protection layer using organo-compatible materials and processes is highly desirable. Here, we report a facile method for the depositing of an organo-compatible superhydrophobic protection layer on organic semiconductors under ambient conditions. The protection layer exhibiting excellent water-repellent and self-cleaning properties was deposited onto organic semiconductors directly using a dip-coating process in a highly fluorinated solution with fluoroalkylsilane-coated titanium dioxide (TiO2) nanoparticles. The proposed protection layer did not damage the underlying organic semiconductors and had good resistance against mechanical-, thermal-, light-stress-, and water-based threats. The protected organic field-effect transistors exhibited more-reliable electrical properties, even when exposed to strong solvents, due to its superhydrophobicity. This study provides a practical solution with which to enhance the reliability of environmentally sensitive organic semiconductor devices in the natural environment.
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Affiliation(s)
- Daekyoung Yoo
- Department of Physics and Astronomy, and Institute of Applied Physics , Seoul National University , Seoul 08826 , Korea
| | - Youngrok Kim
- Department of Physics and Astronomy, and Institute of Applied Physics , Seoul National University , Seoul 08826 , Korea
| | - Misook Min
- Department of Physics and Astronomy, and Institute of Applied Physics , Seoul National University , Seoul 08826 , Korea
| | - Geun Ho Ahn
- Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
| | - Der-Hsien Lien
- Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
| | - Jingon Jang
- Department of Physics and Astronomy, and Institute of Applied Physics , Seoul National University , Seoul 08826 , Korea
| | - Hyunhak Jeong
- Department of Physics and Astronomy, and Institute of Applied Physics , Seoul National University , Seoul 08826 , Korea
| | - Younggul Song
- Department of Physics and Astronomy, and Institute of Applied Physics , Seoul National University , Seoul 08826 , Korea
| | - Seungjun Chung
- Photo-Electronic Hybrids Research Center , Korea Institute of Science and Technology , Seoul 02792 , Korea
| | - Ali Javey
- Electrical Engineering and Computer Sciences , University of California , Berkeley , California 94720 , United States
| | - Takhee Lee
- Department of Physics and Astronomy, and Institute of Applied Physics , Seoul National University , Seoul 08826 , Korea
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27
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Ren Z, Wang N, Zhu M, Li X, Qi J. A NH4F interface passivation strategy to produce air-processed high-performance planar perovskite solar cells. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.06.112] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Fuping Li, Li W, Liu H, Liu C, Dong G, Liu J, Peng K. Palladium Nanoparticles Loaded on TiO2–Graphene Hybrids (Pd/TiO2–Gr) with Enhanced Electrocatalytic Activity in Formic Acid Oxidation. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418080137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Li W, Li L, Wu X, Li J, Jiang L, Yang H, Ke G, Cao G, Deng B, Xu W. High Infrared Blocking Cellulose Film Based on Amorphous to Anatase Transition of TiO 2 via Atomic Layer Deposition. ACS APPLIED MATERIALS & INTERFACES 2018; 10:21056-21060. [PMID: 29741866 DOI: 10.1021/acsami.8b03641] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A high IR-blocking cellulose film was designed based on an amorphous to anatase transition of TiO2 using atomic layer deposition (ALD). This transition was realized at 250 °C, at which the cellulose is thermal stable. Optimized ALD condition of 250 °C and 1200 cycles give us an excellent heat insulator, which could significantly reduce the enclosed space temperature from 59.2 to 51.9 °C after exposure to IR lamp for 5 min.
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30
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Silva-Moraes MO, Garcia-Basabe Y, de Souza RFB, Mota AJ, Passos RR, Galante D, Fonseca Filho HD, Romaguera-Barcelay Y, Rocco MLM, Brito WR. Geometry-dependent DNA-TiO 2 immobilization mechanism: A spectroscopic approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 199:349-355. [PMID: 29635179 DOI: 10.1016/j.saa.2018.03.081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 03/28/2018] [Accepted: 03/30/2018] [Indexed: 06/08/2023]
Abstract
DNA nucleotides are used as a molecular recognition system on electrodes modified to be applied in the detection of various diseases, but immobilization mechanisms, as well as, charge transfers are not satisfactorily described in the literature. An electrochemical and spectroscopic study was carried out to characterize the molecular groups involved in the direct immobilization of DNA structures on the surface of nanostructured TiO2 with the aim of evaluating the influence of the geometrical aspects. X-ray photoelectron spectroscopy at O1s and P2p core levels indicate that immobilization of DNA samples occurs through covalent (POTi) bonds. X-ray absorption spectra at the Ti2p edge reinforce this conclusion. A new species at 138.5eV was reported from P2p XPS spectra analysis which plays an important role in DNA-TiO2 immobilization. The POTi/OTi ratio showed that quantitatively the DNA immobilization mechanism is dependent on their geometry, becoming more efficient for plasmid ds-DNA structures than for PCR ds-DNA structures. The analysis of photoabsorption spectra at C1s edge revealed that the molecular groups that participate in the C1s→LUMO electronic transitions have different pathways in the charge transfer processes at the DNA-TiO2 interface. Our results may contribute to additional studies of immobilization mechanisms understanding the influence of the geometry of different DNA molecules on nanostructured semiconductor and possible impact to the charge transfer processes with application in biosensors or aptamers.
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Affiliation(s)
- M O Silva-Moraes
- Department of Chemistry, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil
| | - Y Garcia-Basabe
- Institute of Science of Life and Nature - ILACVN, Federal University of Latin-American Integration, Foz do Iguaçu 85866-000, PR, Brazil
| | - R F B de Souza
- Department of Chemistry, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil
| | - A J Mota
- Faculty of Agricultural Sciences, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil
| | - R R Passos
- Department of Chemistry, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil
| | - D Galante
- Brazilian Synchrotron Light Laboratory LNLS/CNPEM, Campinas, São Paulo 13083-970, Brazil
| | - H D Fonseca Filho
- Department of Physics, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil
| | - Y Romaguera-Barcelay
- Department of Physics, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil
| | - M L M Rocco
- Institute of Chemistry, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | - W R Brito
- Department of Chemistry, Federal University of Amazonas, Manaus, Amazonas 69067-005, Brazil.
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31
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Zhou T, Xu D, Lu M, Wang P, Zhu J. MOF derived Bi2MoO6/TiO2 nanohybrids: enhanced photocatalytic activity for Rhodamine B degradation under sunlike irradiation. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3499-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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32
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Li J, Wang Y, Tian Y, He X, Yang P, Yuan M, Cao Y, Lyu J. Crystallization of microporous TiO 2 through photochemical deposition of Pt for photocatalytic degradation of volatile organic compounds. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:15662-15670. [PMID: 29574642 DOI: 10.1007/s11356-018-1767-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 03/13/2018] [Indexed: 06/08/2023]
Abstract
The photocatalytic mineralization efficiency of volatile organic compounds (VOCs) is determined by adsorption of reactants, separation of charge carriers, and reaction activity of catalyst surface. Herein, we provide a strategy to synthesize a novel catalyst, namely, PhPt-Micro, which is characterized by high adsorption ability, charge separation efficiency, and surface reaction activity. Toluene was chosen as the model VOC. The effects of photochemical deposition of Pt on the physical properties of microporous amorphous TiO2 (Micro) and toluene mineralization were studied using N2 adsorption/desorption, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, GC-flame ionization detection, and surface photovoltage spectroscopy (SPS) analyses. After photochemical treatment, the structure of Micro was optimized, and Pt nanoparticles were successfully deposited at the outlet of electrons on the catalyst surface. SPS result proved that the optimized structure enhanced the separation efficiency of charge carriers and the migration of photo-generated electrons to the PhPt-Micro surface. The quasi-equilibrium adsorption amount of toluene over PhPt-Micro was two times higher than that with commercial nano TiO2 (P25). The micropores concentrated toluene on the catalyst surface and hindered intermediate desorption. The mineralization efficiency of toluene over PhPt-Micro was 2.4 and 5.9 times higher than those over Micro and P25, respectively.
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Affiliation(s)
- Ji Li
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Yanhong Wang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Yiyuan Tian
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Xuan He
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Pingping Yang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Minghui Yuan
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Yuqing Cao
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Jinze Lyu
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China.
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, Jiangsu, China.
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33
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Zilberberg L, Shankar H, Mitlin S, Elitsur R, Asscher M. Buffer Layer Assisted Chemistry over Amorphous Solid Water: Oxide Thin Film or Metallic Nanoparticles Formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2610-2618. [PMID: 29400981 DOI: 10.1021/acs.langmuir.7b03203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Novel procedures to grow pure thin metal oxide films are always welcome in view of their wide range of applications including photocatalysis, solar cells, sensors, and more. In this paper we present a unique way to grow pure nanofilms of metal oxides in vacuo at the temperature range 110-170 K. The reactive layer assisted deposition (RLAD) procedure for thin oxide films growth is based on the evaporation of a reactive metal element on top of a condensed layer of amorphous solid water (D2O-ASW). When applied to metals that do not react with the water layer, the process yields metal nanoclusters on the substrate. We observed that metal oxide films are formed if the redox potential is of -1.0 V or less, leading to deuterium molecules ejection to the gas phase (e.g., Ti and Al) while metals such as Zn, Fe, and Ag, with redox potentials more than -1.0 V, transform into nanoclusters, as revealed by SEM studies. We conclude that the redox potential ia a parameter that enables one to predict the nature and outcome of the ASW buffer layer assisted chemistry.
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Affiliation(s)
- L Zilberberg
- Institute of Chemistry, The Hebrew University of Jerusalem , Edmund J. Safra Campus, Jerusalem 91904, Israel
| | - H Shankar
- Institute of Chemistry, The Hebrew University of Jerusalem , Edmund J. Safra Campus, Jerusalem 91904, Israel
| | - S Mitlin
- Institute of Chemistry, The Hebrew University of Jerusalem , Edmund J. Safra Campus, Jerusalem 91904, Israel
| | - R Elitsur
- Institute of Chemistry, The Hebrew University of Jerusalem , Edmund J. Safra Campus, Jerusalem 91904, Israel
| | - M Asscher
- Institute of Chemistry, The Hebrew University of Jerusalem , Edmund J. Safra Campus, Jerusalem 91904, Israel
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34
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Zhao J, Zhang M, Wan S, Yang Z, Hwang CS. Highly Flexible Resistive Switching Memory Based on the Electronic Switching Mechanism in the Al/TiO 2/Al/Polyimide Structure. ACS APPLIED MATERIALS & INTERFACES 2018; 10:1828-1835. [PMID: 29256591 DOI: 10.1021/acsami.7b16214] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A highly flexible resistive switching (RS) memory was fabricated in the Al/TiO2/Al/polyimide structure using a simple and cost-effective method. An electronic-resistive-switching-based flexible memory with high performance that can withstand a bending strain of up to 3.6% was obtained. The RS properties showed no obvious degradation even after the bending tests that were conducted up to 10 000 times, and over 4000 writing/erasing cycles were confirmed at the maximally bent state. The superior electrical properties against the mechanical stress of the device can be ascribed to the electronic RS mechanism related to electron trapping/detrapping, which can prevent the inevitable degradation in the case of the RS related with the ionic defects.
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Affiliation(s)
- Jinshi Zhao
- School of Electrical & Electronic Engineering, Tianjin Key Laboratory of Film Electronic & Communication Devices, Tianjin University of Technology , Tianjin 300384, China
| | - Ming Zhang
- School of Electrical & Electronic Engineering, Tianjin Key Laboratory of Film Electronic & Communication Devices, Tianjin University of Technology , Tianjin 300384, China
| | - Shangfei Wan
- School of Electrical & Electronic Engineering, Tianjin Key Laboratory of Film Electronic & Communication Devices, Tianjin University of Technology , Tianjin 300384, China
| | - Zhengchun Yang
- School of Electrical & Electronic Engineering, Tianjin Key Laboratory of Film Electronic & Communication Devices, Tianjin University of Technology , Tianjin 300384, China
| | - Cheol Seong Hwang
- Department of Materials Science and Engineering and Inter-University Semiconductor Research Center, Seoul National University , 599 Gwanak-ro, Gwanak-gu, Seoul 151-744, Republic of Korea
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35
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De Silva NL, Jayasundera ACA, Folger A, Kasian O, Zhang S, Yan CF, Scheu C, Bandara J. Superior solar-to-hydrogen energy conversion efficiency by visible light-driven hydrogen production via highly reduced Ti2+/Ti3+ states in a blue titanium dioxide photocatalyst. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01212a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A catalytic hydrogen production system was developed with TiO2 that contains Ti3+/Ti2+ reduced states which act as both visible and IR light harvesting components as well as the catalytic site.
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Affiliation(s)
| | | | - A. Folger
- Max-Planck-Institut für Eisenforschung GmbH
- D-40237 Düsseldorf
- Germany
| | - O. Kasian
- Max-Planck-Institut für Eisenforschung GmbH
- D-40237 Düsseldorf
- Germany
| | - S. Zhang
- Max-Planck-Institut für Eisenforschung GmbH
- D-40237 Düsseldorf
- Germany
| | - Chang-Feng Yan
- Hydrogen Production and Utilization Laboratory
- Key Laboratory of Renewable Energy
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences
- Guangzhou
- China
| | - C. Scheu
- Max-Planck-Institut für Eisenforschung GmbH
- D-40237 Düsseldorf
- Germany
| | - J. Bandara
- National Institute of Fundamental Studies
- Kandy
- Sri Lanka
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36
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Wang K, Zhao W, Liu J, Niu J, Liu Y, Ren X, Feng J, Liu Z, Sun J, Wang D, Liu SF. CO 2 Plasma-Treated TiO 2 Film as an Effective Electron Transport Layer for High-Performance Planar Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:33989-33996. [PMID: 28914052 DOI: 10.1021/acsami.7b11329] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Perovskite solar cells (PSCs) have received great attention because of their excellent photovoltaic properties especially for the comparable efficiency to silicon solar cells. The electron transport layer (ETL) is regarded as a crucial medium in transporting electrons and blocking holes for PSCs. In this study, CO2 plasma generated by plasma-enhanced chemical vapor deposition (PECVD) was introduced to modify the TiO2 ETL. The results indicated that the CO2 plasma-treated compact TiO2 layer exhibited better surface hydrophilicity, higher conductivity, and lower bulk defect state density in comparison with the pristine TiO2 film. The quality of the stoichiometric TiO2 structure was improved, and the concentration of oxygen-deficiency-induced defect sites was reduced significantly after CO2 plasma treatment for 90 s. The PSCs with the TiO2 film treated by CO2 plasma for 90 s exhibited simultaneously improved short-circuit current (JSC) and fill factor. As a result, the PSC-based TiO2 ETL with CO2 plasma treatment affords a power conversion efficiency of 15.39%, outperforming that based on pristine TiO2 (13.54%). These results indicate that the plasma treatment by the PECVD method is an effective approach to modify the ETL for high-performance planar PSCs.
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Affiliation(s)
- Kang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Wenjing Zhao
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Jia Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Jinzhi Niu
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Yucheng Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Xiaodong Ren
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Jiangshan Feng
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Zhike Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Jie Sun
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Dapeng Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710119, China
| | - Shengzhong Frank Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University , Xi'an 710119, China
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37
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Hunagund SM, Desai VR, Barretto DA, Pujar MS, Kadadevarmath JS, Vootla S, Sidarai AH. Photocatalysis effect of a novel green synthesis gadolinium doped titanium dioxide nanoparticles on their biological activities. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.06.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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38
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Hou C, Jiao T, Xing R, Chen Y, Zhou J, Zhang L. Preparation of TiO2 nanoparticles modified electrospun nanocomposite membranes toward efficient dye degradation for wastewater treatment. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.04.033] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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39
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Liu M, Ding X, Yang Q, Wang Y, Zhao G, Yang N. A pM leveled photoelectrochemical sensor for microcystin-LR based on surface molecularly imprinted TiO 2@CNTs nanostructure. JOURNAL OF HAZARDOUS MATERIALS 2017; 331:309-320. [PMID: 28273581 DOI: 10.1016/j.jhazmat.2017.02.031] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 01/21/2017] [Accepted: 02/18/2017] [Indexed: 05/14/2023]
Abstract
A simple and highly sensitive photoelectrochemical (PEC) sensor towards Microcystin-LR (MC-LR), a kind of typical cyanobacterial toxin in water samples, was developed on a surface molecular imprinted TiO2 coated multiwalled carbon nanotubes (MI-TiO2@CNTs) hybrid nanostructure. It was synthesized using a feasible two-step sol-gel method combining with in situ surface molecular imprinting technique (MIT). With a controllable core-shell tube casing structure, the resultant MI-TiO2@CNTs are enhanced greatly in visible-light driven response capacity. In comparison with the traditional TiO2 (P25) and non-imprinted (NI-)TiO2@CNTs, the MI-TiO2@CNTs based PEC sensor showed a much higher photoelectric oxidation capacity towards MC-LR. Using this sensor, the determination of MC-LR was doable in a wide linear range from 1.0pM to 3.0nM with a high photocurrent response sensitivity. An outstanding selectivity towards MC-LR was further achieved with this sensor, proven by simultaneously monitoring 100-fold potential co-existing interferences. The superiority of the obtained MC-LR sensor in sensitivity and selectivity is mainly attributed to the high specific surface area and excellent photoelectric activity of TiO2@CNTs heterojunction structure, as well as the abundant active recognition sites on its functionalized molecular imprinting surface. A promising PEC analysis platform with high sensitivity and selectivity for MC-LR has thus been provided.
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Affiliation(s)
- Meichuan Liu
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Xue Ding
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Qiwei Yang
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Yu Wang
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Guohua Zhao
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Siping Road 1239, Shanghai 200092, China.
| | - Nianjun Yang
- Institute of Materials Engineering, University of Siegen, Paul-Bonatz Str. 9-11, Siegen 57076, Germany.
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40
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Qing Y, Hu C, Yang C, An K, Tang F, Tan J, Liu C. Rough Structure of Electrodeposition as a Template for an Ultrarobust Self-Cleaning Surface. ACS APPLIED MATERIALS & INTERFACES 2017; 9:16571-16580. [PMID: 28441007 DOI: 10.1021/acsami.6b15745] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Superhydrophobic surfaces with self-cleaning properties have been developed based on roughness on the micro- and nanometer scales and low-energy surfaces. However, such surfaces are fragile and stop functioning when exposed to oil. Addressing these challenges, here we show an ultrarobust self-cleaning surface fabricated by a process of metal electrodeposition of a rough structure that is subsequently coated with fluorinated metal-oxide nanoparticles. Scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction were employed to characterize the surfaces. The micro- and nanoscale roughness jointly with the low surface energy imparted by the fluorinated nanoparticles yielded surfaces with water contact angle of 164.1° and a sliding angle of 3.2°. Most interestingly, the surface exhibits fascinating mechanical stability after finger-wipe, knife-scratch, sand abrasion, and sandpaper abrasion tests. It is found that the surface with superamphiphobic properties has excellent repellency toward common corrosive liquids and low-surface-energy substances. Amazingly, the surface exhibited excellent self-cleaning ability and remained intact even after its top layer was exposed to 50 abrasion cycles with sandpaper and oil contamination. It is believed that this simple, unique, and practical method can provide new approaches for effectively solving the stability issue of superhydrophobic surfaces and could extend to a variety of metallic materials.
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Affiliation(s)
- Yongquan Qing
- Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University , Shenyang 110819, China
| | - Chuanbo Hu
- School of Metallurgy, Northeastern University , Shenyang 110819, China
| | - Chuanning Yang
- Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University , Shenyang 110819, China
| | - Kai An
- Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University , Shenyang 110819, China
| | - Fawei Tang
- College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology , Beijing 100124, China
| | - Junyang Tan
- Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University , Shenyang 110819, China
| | - Changsheng Liu
- Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University , Shenyang 110819, China
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41
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Fabrication of Au/TiO 2 nanowires@carbon fiber paper ternary composite for visible-light photocatalytic degradation of gaseous styrene. Catal Today 2017. [DOI: 10.1016/j.cattod.2016.06.026] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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42
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Chen Y, Chuang CH, Qin Z, Shen S, Doane T, Burda C. Electron-transfer dependent photocatalytic hydrogen generation over cross-linked CdSe/TiO 2 type-II heterostructure. NANOTECHNOLOGY 2017; 28:084002. [PMID: 28045011 DOI: 10.1088/1361-6528/aa5642] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Developing type-II heterostructures with a spatial separation of photoexcited electrons and holes is a useful route to promote photocatalytic hydrogen generation. However, few investigations on the charge transfer process across the heterojunction have been carried out, which can allow us to uncover the reaction mechanism. Herein, CdSe quantum dots (QDs) and TiO2 nanocrystals were synthesized and combined in water yielding CdSe/TiO2 type II heterostructures. It was found that mercaptopropionic acid as bifunctional molecules could bind with CdSe and TiO2 to form a cross-linked morphology. The charge carrier dynamics of bare CdSe and CdSe/TiO2 were detected using femtosecond transient absorption spectroscopy. In the presence of TiO2, the average exciton lifetime of CdSe QDs was apparently decreased, owing to the electron transfer from photoexcited CdSe to TiO2. Particularly, the electron-transfer rate from small CdSe QDs (3.0 nm) was much faster than that from big CdSe QDs (4.2 nm). The improved photocatalytic hydrogen generation was observed for CdSe/TiO2 compared to bare CdSe QDs. The enhancement factor for small CdSe QDs was higher than that for big CdSe QDs, which was in good agreement with the electron-transfer rates. This result indicated that the electron transfer between CdSe and TiO2 played an important role in photocatalytic hydrogen generation on CdSe/TiO2 type-II heterostructure. Our study provides a fundamental guidance to construct efficient heterostructured photocatalysts by delicate control of the band alignment.
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Affiliation(s)
- Yubin Chen
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Shaanxi 710049, People's Republic of China
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43
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Zha R, Chen M, Shi T, Nadimicherla R, Jiang T, Zhang Z, Zhang M. Double dimensionally ordered nanostructures: toward a multifunctional reinforcing nanohybrid for epoxy resin. RSC Adv 2017. [DOI: 10.1039/c6ra26365h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Multifunctional intercalation between a monodisperse 0D nano-TiO2 ball cactus and 2D layered MMT and their synergistic impacts to the epoxy matrix.
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Affiliation(s)
- Ruhua Zha
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- P. R. China
| | - Ming Chen
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- P. R. China
| | - Tuo Shi
- Laboratory of Solid State Ionics
- School of Materials Science and Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Reddeppa Nadimicherla
- Laboratory of Solid State Ionics
- School of Materials Science and Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Tongwu Jiang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- P. R. China
| | - Zongwen Zhang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- P. R. China
| | - Min Zhang
- Henan Collaborative Innovation Center for Energy-Saving Building Materials
- Xinyang Normal University
- Xinyang 464000
- P. R. China
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44
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Cheng J, Wang Y, Xing Y, Shahid M, Pan W. A stable and highly efficient visible-light photocatalyst of TiO2 and heterogeneous carbon core–shell nanofibers. RSC Adv 2017. [DOI: 10.1039/c7ra00546f] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A highly efficient visible-light photocatalyst of TiO2 and heterogeneous carbon core–shell nanofibers is reported.
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Affiliation(s)
- Jing Cheng
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing
- PR China
| | - Yuting Wang
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing
- PR China
| | - Yan Xing
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing
- PR China
| | - Muhammad Shahid
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing
- PR China
| | - Wei Pan
- State Key Laboratory of New Ceramics and Fine Processing
- School of Materials Science and Engineering
- Tsinghua University
- Beijing
- PR China
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45
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Shang M, Hou H, Gao F, Wang L, Yang W. Mesoporous Ag@TiO2 nanofibers and their photocatalytic activity for hydrogen evolution. RSC Adv 2017. [DOI: 10.1039/c7ra03177g] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We reported the exploration of Ag@TiO2 mesoporous nanofibers with significantly improved photocatalytic performance.
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Affiliation(s)
- Minghui Shang
- Institute of Materials
- Ningbo University of Technology
- Ningbo City
- P. R. China
| | - Huilin Hou
- Institute of Materials
- Ningbo University of Technology
- Ningbo City
- P. R. China
| | - Fengmei Gao
- Institute of Materials
- Ningbo University of Technology
- Ningbo City
- P. R. China
| | - Lin Wang
- Institute of Materials
- Ningbo University of Technology
- Ningbo City
- P. R. China
| | - Weiyou Yang
- Institute of Materials
- Ningbo University of Technology
- Ningbo City
- P. R. China
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46
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Barama S, Davidson A, Barama A, Boukhlouf H, Casale S, Calers C, Brouri D, Domingos C, Djadoun A. Dephosphatation under UV light of water by Ti-PILC with activation by secondary species (La, Se, and Rb). CR CHIM 2017. [DOI: 10.1016/j.crci.2016.05.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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47
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Kumar V, Swami SK, Kumar A, Ntwaeaborwa OM, Dutta V, Swart HC. Eu 3+ doped down shifting TiO 2 layer for efficient dye-sensitized solar cells. J Colloid Interface Sci 2016; 484:24-32. [PMID: 27579941 DOI: 10.1016/j.jcis.2016.08.060] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 08/16/2016] [Indexed: 11/29/2022]
Abstract
Europium doped TiO2 (TiO2:Eu3+) down-shifting (DS) nanophosphors (NPrs) were synthesized by the solution-combustion method with different concentrations of Eu3+. The X-ray diffraction results confirmed the formation of a polycrystalline tetragonal structure of the TiO2. The emission of colour of the TiO2:Eu3+ DS NPr was tuned by varying the doping concentration of Eu3+. The photoluminescence results confirmed that the TiO2:Eu3+ DS NPrs converted the UV light into visible light by energy down-conversion process, i.e. down-shifting of high energy UV photons to low energy visible photons. These TiO2:Eu3+ DS NPrs were used to enhance the efficiency of the Dye sensitized solar cell from 8.32% to 8.80%.
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Affiliation(s)
- Vinod Kumar
- Photovoltaic Laboratory, Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India; Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa.
| | - Sanjay Kumar Swami
- Photovoltaic Laboratory, Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Anuj Kumar
- Photovoltaic Laboratory, Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - O M Ntwaeaborwa
- Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa
| | - Viresh Dutta
- Photovoltaic Laboratory, Centre for Energy Studies, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - H C Swart
- Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa
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Reli M, Huo P, Šihor M, Ambrožová N, Troppová I, Matějová L, Lang J, Svoboda L, Kuśtrowski P, Ritz M, Praus P, Kočí K. Novel TiO2/C3N4 Photocatalysts for Photocatalytic Reduction of CO2 and for Photocatalytic Decomposition of N2O. J Phys Chem A 2016; 120:8564-8573. [DOI: 10.1021/acs.jpca.6b07236] [Citation(s) in RCA: 139] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | - Piotr Kuśtrowski
- Faculty of Chemistry, Jagiellonian University in Kraków, ul. Ingardena 3, 30-060 Kraków, Poland
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Zhang K, Zhou W, Chi L, Zhang X, Hu W, Jiang B, Pan K, Tian G, Jiang Z. Black N/H-TiO 2 Nanoplates with a Flower-Like Hierarchical Architecture for Photocatalytic Hydrogen Evolution. CHEMSUSCHEM 2016; 9:2841-2848. [PMID: 27552078 DOI: 10.1002/cssc.201600854] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Indexed: 05/22/2023]
Abstract
A facile two-step strategy was used to prepare black of hydrogenated/nitrogen-doped TiO2 nanoplates (NHTA) with a flower-like hierarchical architecture. In situ nitriding and self-assembly was realized by hydrothermal synthesis using tripolycyanamide as a N source and as a structure-directing agent. After thorough characterization, it was found that the hydrogenation treatment did not damage the flower-like architecture but distorted the anatase crystal structure and significantly changed the band structure of NHTA owing to the increased concentration of oxygen vacancies, hydroxyl groups, and Ti3+ cations. Under AM 1.5 illumination, the photocatalytic H2 evolution rate on the black NHTA was approximately 1500 μmol g-1 h-1 , which was much better than the N-doped TiO2 nanoplates (≈690 μmol g-1 h-1 ). This improvement in the hydrogen evolution rate was attributed to a reduced bandgap, enhanced separation of the photogenerated charge carriers, and an increase in the surface-active sites.
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Affiliation(s)
- Kaifu Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, PR China
| | - Wei Zhou
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, PR China.
| | - Lina Chi
- Faculty of Engineering and the Environment, University of Southampton, Southampton, SO17 1BJ, United Kingdom
| | - Xiangcheng Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, PR China
| | - Weiyao Hu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, PR China
| | - Baojiang Jiang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, PR China
| | - Kai Pan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, PR China
| | - Guohui Tian
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin, 150080, PR China
| | - Zheng Jiang
- Faculty of Engineering and the Environment, University of Southampton, Southampton, SO17 1BJ, United Kingdom.
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