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Wang S, Gao J, Wang Y, Lu H, Yang S, Zheng L, Li Y, He G. Solar-powered detection of organic dyes using nitrogen-doped N-TiO 2/Ag 2O nanorod arrays. Mikrochim Acta 2024; 191:353. [PMID: 38809482 DOI: 10.1007/s00604-024-06429-7] [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: 03/08/2024] [Accepted: 05/12/2024] [Indexed: 05/30/2024]
Abstract
Organic pollutant detection has caused widespread concern regarding due to their potential environmental and human health risks. In this work, a nitrogen-doped titanium dioxide/silver oxide (N-TiO2/Ag2O) composite has been designed as a sensitive photoelectrochemical (PEC) monitoring platform of organic dyes. Sensitive determination relies on the outstanding PEC performance of N-TiO2/Ag2O. The improved PEC performance stems from the effective separation of photocarriers and the extended light response range provided by the narrowing bandgap and a p-n junction with N-TiO2/Ag2O. The N-TiO2/Ag2O electrode exhibits a photocurrent density of up to 2.2 mA/cm2, demonstrating three times increase compared with the photocurrent density observed with the pure TiO2 film. The linear detection range for rhodamine B (RhB), methylene blue (MB), and methyl orange (MO) is 0.2 ng/mL to 10 μg/mL with an ultrasensitive detection limit of 0.2 ng/mL without bias voltage. Due to the outstanding photocurrent density and sensitive response to organic pollutants, the N-TiO2/Ag2O PEC sensor provided a promising analytical method to detect environmental organic dyes.
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Affiliation(s)
- Shixuan Wang
- School of Mechanics and Photoelectric Physics, Anhui University of Science and Technology, Huainan, 232001, People's Republic of China
- The First Affiliated Hospital of Anhui University of Science and Technology (Huainan First People's Hospital), Huainan, 232001, People's Republic of China
| | - Juan Gao
- School of Mechanics and Photoelectric Physics, Anhui University of Science and Technology, Huainan, 232001, People's Republic of China.
- The First Affiliated Hospital of Anhui University of Science and Technology (Huainan First People's Hospital), Huainan, 232001, People's Republic of China.
| | - Yanfen Wang
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, 232001, People's Republic of China
| | - Haowen Lu
- School of Mechanics and Photoelectric Physics, Anhui University of Science and Technology, Huainan, 232001, People's Republic of China
| | - Sen Yang
- School of Mechanics and Photoelectric Physics, Anhui University of Science and Technology, Huainan, 232001, People's Republic of China
| | - Lingcheng Zheng
- School of Mechanics and Photoelectric Physics, Anhui University of Science and Technology, Huainan, 232001, People's Republic of China
| | - Yang Li
- School of Mechanics and Photoelectric Physics, Anhui University of Science and Technology, Huainan, 232001, People's Republic of China
| | - Gang He
- School of Materials Science and Engineering, Anhui University, Hefei, 230601, P.R. China
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2
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Ma X, Deng L, Zou Z, Pan Z, Feng L, Huang Z, Liang Z, Liu X, Li M, Su Z, Zheng H. Novel portable photoelectrochemical sensor based on CdS/Au/TiO 2 nanotube arrays for sensitive, non-invasive, and instantaneous uric acid detection in saliva. Talanta 2024; 271:125646. [PMID: 38218058 DOI: 10.1016/j.talanta.2024.125646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/04/2024] [Accepted: 01/06/2024] [Indexed: 01/15/2024]
Abstract
Uric acid (UA) monitoring is the most effective method for diagnosis and treatment of gout, hyperuricemia, hypertension, and other diseases. However, challenges remain regarding detection efficiency and rapid on-site detection. Here, we first synthesized a CdS/Au/TiO2-NTAs Z-scheme heterojunction material using a titanium dioxide nanotube array (TiO2-NTAs) as the substrate and modified with gold nanoparticles (Au) and cadmium sulfide particles (CdS). This material achieves bandgap alignment to generate a large number of electron-hole pairs under illumination. Then, using CdS/Au/TiO2-NTAs as the working electrode and molecularly imprinted polymers (MIP) as the recognition unit, we constructed a portable photoelectrochemical (PEC) sensor for non-invasive instant detection of UA concentration in human saliva, which has unique advantages in the field of high-sensitivity PEC instant detection. The portable MIP-PEC sensor achieves a linear range of 0.01-50 μM and a detection limit as low as 5.07 nM (S/N = 3). At the same time, the portable MIP-PEC sensor exhibits excellent sensitivity, specificity as well as stability, and shows no statistically significant difference compared to traditional high-performance liquid chromatography (HPLC) in practical sample detection. Compared to traditional PEC modes, this work demonstrates a novel and universal method for high-sensitivity instant detection in the field of PEC.
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Affiliation(s)
- Xiaolong Ma
- Institute of Life Sciences, Guangxi Medical University, No. 22 Shuang Yong Road, Qingxiu District, Nanning, 530021, China
| | - Lijun Deng
- Pharmaceutical College, Guangxi Medical University, No. 22 Shuang Yong Road, Qingxiu District, Nanning, 530021, China
| | - Ziwei Zou
- Pharmaceutical College, Guangxi Medical University, No. 22 Shuang Yong Road, Qingxiu District, Nanning, 530021, China
| | - Ziping Pan
- Pharmaceutical College, Guangxi Medical University, No. 22 Shuang Yong Road, Qingxiu District, Nanning, 530021, China
| | - Linlin Feng
- Pharmaceutical College, Guangxi Medical University, No. 22 Shuang Yong Road, Qingxiu District, Nanning, 530021, China
| | - Zheng Huang
- Pharmaceutical College, Guangxi Medical University, No. 22 Shuang Yong Road, Qingxiu District, Nanning, 530021, China
| | - Zhenwu Liang
- Pharmaceutical College, Guangxi Medical University, No. 22 Shuang Yong Road, Qingxiu District, Nanning, 530021, China
| | - Xinli Liu
- Institute of Life Sciences, Guangxi Medical University, No. 22 Shuang Yong Road, Qingxiu District, Nanning, 530021, China
| | - Mei Li
- Pharmaceutical College, Guangxi Medical University, No. 22 Shuang Yong Road, Qingxiu District, Nanning, 530021, China.
| | - Zhiheng Su
- Pharmaceutical College, Guangxi Medical University, No. 22 Shuang Yong Road, Qingxiu District, Nanning, 530021, China.
| | - Hua Zheng
- Institute of Life Sciences, Guangxi Medical University, No. 22 Shuang Yong Road, Qingxiu District, Nanning, 530021, China.
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3
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Wierzbicka E, Szaniawska-Białas E, Schultz T, Basilio AO, Siemiaszko D, Ray K, Koch N, Pinna N, Polański M. Long-Term Stability of Light-Induced Ti 3+ Defects in TiO 2 Nanotubes for Amplified Photoelectrochemical Water Splitting. CHEMSUSCHEM 2024; 17:e202301614. [PMID: 38297965 DOI: 10.1002/cssc.202301614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/22/2023] [Indexed: 02/02/2024]
Abstract
This study shows that the simple approach of keeping anodic TiO2 nanotubes at 70 °C in ethanol for 1 h results in improved photoelectrochemical water splitting activity due to initiation of crystallization in the material amplified by the light-induced formation of a Ti3+ -Vo states under UV 365 nm illumination. For the first time, the light-induced Ti3+ -Vo states are generated when oxygen is present in the reaction solution and are stable when in contact with air (oxygen) for a long time (two months). We confirmed here that the amorphous or nearly amorphous structure of titania supports the survival of Ti3+ species in contact with oxygen. It is also shown that the ethanol treatment substantially improves the morphology of the titania nanotube arrays, specifically, less surface cracking and surface purification from C- and F-based contamination from the electrolyte used for anodizing.
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Affiliation(s)
- Ewa Wierzbicka
- Department of Functional Materials and Hydrogen Technology, Faculty of Advanced Technologies and Chemistry, Military University of Technology, Kaliskiego Street 2, 00908, Warsaw, Poland
| | - Ewelina Szaniawska-Białas
- Department of Functional Materials and Hydrogen Technology, Faculty of Advanced Technologies and Chemistry, Military University of Technology, Kaliskiego Street 2, 00908, Warsaw, Poland
| | - Thorsten Schultz
- Institut für Physik and IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 6, 12489, Berlin, Germany
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Amanda O Basilio
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Dariusz Siemiaszko
- Department of Functional Materials and Hydrogen Technology, Faculty of Advanced Technologies and Chemistry, Military University of Technology, Kaliskiego Street 2, 00908, Warsaw, Poland
| | - Kallol Ray
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Norbert Koch
- Institut für Physik and IRIS Adlershof, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 6, 12489, Berlin, Germany
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Nicola Pinna
- Department of Chemistry, IRIS Adlershof & The Center for the Science of Materials Berlin, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489, Berlin, Germany
| | - Marek Polański
- Department of Functional Materials and Hydrogen Technology, Faculty of Advanced Technologies and Chemistry, Military University of Technology, Kaliskiego Street 2, 00908, Warsaw, Poland
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4
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Kashi E, Surip SN, Khadiran T, Nawawi WI, De Luna Y, Yaseen ZM, Jawad AH. High adsorptive performance of chitosan-microalgae-carbon-doped TiO 2 (kronos)/ salicylaldehyde for brilliant green dye adsorption: Optimization and mechanistic approach. Int J Biol Macromol 2024; 259:129147. [PMID: 38181921 DOI: 10.1016/j.ijbiomac.2023.129147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 11/30/2023] [Accepted: 12/28/2023] [Indexed: 01/07/2024]
Abstract
A composite of chitosan biopolymer with microalgae and commercial carbon-doped titanium dioxide (kronos) was modified by grafting an aromatic aldehyde (salicylaldehyde) in a hydrothermal process for the removal of brilliant green (BG) dye. The resulting Schiff's base Chitosan-Microalgae-TiO2 kronos/Salicylaldehyde (CsMaTk/S) material was characterised using various analytical methods (conclusive of physical properties using BET surface analysis method, elemental analysis, FTIR, SEM-EDX, XRD, XPS and point of zero charge). Box Behnken Design was utilised for the optimisation of the three input variables, i.e., adsorbent dose, pH of the media and contact time. The optimum conditions appointed by the optimisation process were further affirmed by the desirability test and employed in the equilibrium studies in batch mode and the results exhibited a better fit towards the pseudo-second-order kinetic model as well as Freundlich and Langmuir isotherm models, with a maximum adsorption capacity of 957.0 mg/g. Furthermore, the reusability study displayed the adsorptive performance of CsMaTk/S remains effective throughout five adsorption cycles. The possible interactions between the dye molecules and the surface of the adsorbent were derived based on the analyses performed and the electrostatic attractions, H-bonding, Yoshida-H bonding, π-π and n-π interactions are concluded to be the responsible forces in this adsorption process.
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Affiliation(s)
- Elmira Kashi
- Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia; Advanced Biomaterials and Carbon Development Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| | - S N Surip
- Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia; Advanced Biomaterials and Carbon Development Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Tumirah Khadiran
- Forest Products Division, Forest Research Institute Malaysia (FRIM), 52109 Kepong, Selangor, Malaysia
| | - Wan Izhan Nawawi
- Faculty of Applied Sciences, Universiti Teknologi MARA, Cawangan Perlis, 02600, Arau, Perlis, Malaysia
| | - Yannis De Luna
- Program of Chemistry, Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar University, PO Box 2713, Doha, Qatar
| | - Zaher Mundher Yaseen
- Civil and Environmental Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia; Interdisciplinary Research Center for Membranes and Water Security, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Ali H Jawad
- Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia; Advanced Biomaterials and Carbon Development Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia; Environmental and Atmospheric Sciences Research Group, Scientific Research Center, Al-Ayen University, Thi-Qar, Nasiriyah, 64001, Iraq.
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5
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Ravikumar MP, Quach TA, Urupalli B, Murikinati MK, Muthukonda Venkatakrishnan S, Do TO, Mohan S. Observation of inherited plasmonic properties of TiN in titanium oxynitride (TiO xN y) for solar-drive photocatalytic applications. ENVIRONMENTAL RESEARCH 2023; 229:115961. [PMID: 37086885 DOI: 10.1016/j.envres.2023.115961] [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: 03/02/2023] [Revised: 04/05/2023] [Accepted: 04/19/2023] [Indexed: 05/03/2023]
Abstract
This study demonstrates the synthesis of titanium oxynitride (TiOxNy) via a controlled step-annealing of commercial titanium nitride (TiN) powders under normal ambience. The structure of the formed TiOxNy system is confirmed via XRD, Rietveld refinements, XPS, Raman, and HRTEM analysis. A distinct plasmonic band corresponding to TiN is observed in the absorption spectrum of TiOxNy, indicating that the surface plasmonic resonance (SPR) property of TiN is being inherited in the resulting TiOxNy system. The prerequisites such as reduced band gap energy, suitable band edge positions, reduced recombination, and enhanced carrier-lifetime manifested by the TiOxNy system are investigated using Mott-Schottky, XPS, time-resolved and steady-state PL spectroscopy techniques. The obtained TiOxNy photocatalyst is found to degrade around 98% of 10 ppm rhodamine B dye in 120 min and produce H2 at a rate of ∼1546 μmolg-1h-1 under solar light irradiation along with consistent recycle abilities. The results of cyclic voltammetry, linear sweep voltammetry, electrochemical impedance and photocurrent studies suggest that this evolved TiOxNy system could be functioning via plasmonic Ohmic interface rather than the typical plasmonic Schottky interface due to their amalgamated band structures in the oxynitride phase.
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Affiliation(s)
- Mithun Prakash Ravikumar
- Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus, Kanakapura, Bangalore, Karnataka, 562112, India
| | - Toan-Anh Quach
- Department of Chemical Engineering, Laval University, 1065 Avenue de la Médecine, Québec, QC G1V0A6, Canada
| | - Bharagav Urupalli
- Nanocatalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Kadapa, 516005, Andhra Pradesh, India
| | - Mamatha Kumari Murikinati
- Nanocatalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Kadapa, 516005, Andhra Pradesh, India
| | - Shankar Muthukonda Venkatakrishnan
- Nanocatalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Kadapa, 516005, Andhra Pradesh, India
| | - Trong-On Do
- Department of Chemical Engineering, Laval University, 1065 Avenue de la Médecine, Québec, QC G1V0A6, Canada
| | - Sakar Mohan
- Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus, Kanakapura, Bangalore, Karnataka, 562112, India.
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6
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Sun L, Tan Y, Xu H, Shu R, Liu Z, Zhang R, Hou J, Zhang R. A Novel Photocatalytic Functional Coating Applied to the Degradation of Xylene in Coating Solvents under Solar Irradiation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:570. [PMID: 36770531 PMCID: PMC9920615 DOI: 10.3390/nano13030570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 01/24/2023] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
A novel photocatalytic functional coating was prepared with g-C3N4/TiO2 composites as the photocatalytic active component modified by dielectric barrier discharge (DBD), and it showed an efficient catalytic performance under solar light irradiation. The degradation of xylene released from fluorocarbon coating solvents by the g-C3N4/TiO2 composite coatings was investigated under simulated solar irradiation. The degradation efficiency of the coating mixed with DBD-modified 10%-g-C3N4/TiO2 showed a stable, long-lasting, and significantly higher activity compared to the coatings mixed with the unmodified catalyst. Ninety-eight percent of the xylene released from fluorocarbon coating solvents was successfully removed under solar light irradiation in 2 h. The properties of the catalyst samples before and after modification were evaluated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible (UV-vis) spectroscopy, X-ray photoelectron spectroscopy (XPS), and other characterization techniques. The results suggested that DBD-modified g-C3N4/TiO2 showed an improved capture ability and utilization efficiency of solar light with reduced band gap and lower complexation rate of electron-hole pairs. The prepared photocatalytic coating offers an environmentally friendly approach to purify the volatile organic compounds (VOCs) released from solvent-based coatings.
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Affiliation(s)
- Luying Sun
- Institute of Environmental Science, Fudan University, Shanghai 200433, China
| | - Yujie Tan
- Institute of Environmental Science, Fudan University, Shanghai 200433, China
| | - Hui Xu
- Institute of Environmental Science, Fudan University, Shanghai 200433, China
| | - Ruchen Shu
- Institute of Environmental Science, Fudan University, Shanghai 200433, China
| | - Zhi Liu
- Foshan Shunde District Midea Washing Appliance Manufacturing Co., Ltd., Foshan 528311, China
| | - Ruina Zhang
- Shanghai Institute for Design & Research on Environmental Engineering, Shanghai 200232, China
| | - Jianyuan Hou
- Institute of Environmental Science, Fudan University, Shanghai 200433, China
| | - Renxi Zhang
- Institute of Environmental Science, Fudan University, Shanghai 200433, China
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7
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Gu H, Liang F, Wang X, Wu S, Lv G, Zhang H, Zhang S, Lu L, Dong Z. N-doped rutile TiO 2 nanorod@g-C 3N 4 core/shell S-scheme heterojunctions for boosting CO 2 photoreduction activity. Catal Sci Technol 2023. [DOI: 10.1039/d2cy01839j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A novel core/shell structure composed of N-doped rutile TiO2@g-C3N4 (NT@CNx) with an S-scheme heterojunction is successfully synthesized. The S-scheme heterojunction optimizes the electrochemical property and redox ability of the NT@CNx composite.
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Affiliation(s)
- Haohui Gu
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Feng Liang
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Xiaohan Wang
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Shuaibing Wu
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Gongye Lv
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Haijun Zhang
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Shaowei Zhang
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
| | - Lilin Lu
- The Hubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Zhijun Dong
- The Hubei Province Key Laboratory of Coal Conversion & New Carbon Materials, Wuhan University of Science and Technology, Wuhan 430081, China
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8
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Pan Y, Guo Q, Hu S, Zheng X, Yin D, Zhou S, Hu N, Qiu F, Yun L, Yu H, Hao Y, Huang J. Photocatalytic Degradation Properties of Nano‐lignocellulose⋅NiNiO/GR‐TiO
2
Hollow Rod Composite for Methylene Blue. ChemistrySelect 2022. [DOI: 10.1002/slct.202202345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yanfei Pan
- College of Material Science and Art Design Inner Mongolia Agricultural University Hohhot China 010018
- Inner Mongolia Key Laboratory for Sand Shrubs Fibrosis and Energy Development and Utilization Inner Mongolia Agricultural University Hohhot China 010018
| | - Qiang Guo
- College of Material Science and Art Design Inner Mongolia Agricultural University Hohhot China 010018
| | - Shuaiqi Hu
- College of Material Science and Art Design Inner Mongolia Agricultural University Hohhot China 010018
| | - Xin Zheng
- College of Material Science and Art Design Inner Mongolia Agricultural University Hohhot China 010018
| | - Dingwen Yin
- College of Material Science and Art Design Inner Mongolia Agricultural University Hohhot China 010018
| | - Songran Zhou
- College of Material Science and Art Design Inner Mongolia Agricultural University Hohhot China 010018
| | - Nianguang Hu
- College of Material Science and Art Design Inner Mongolia Agricultural University Hohhot China 010018
| | - Fengqi Qiu
- College of Material Science and Art Design Inner Mongolia Agricultural University Hohhot China 010018
| | - Lei Yun
- College of Material Science and Art Design Inner Mongolia Agricultural University Hohhot China 010018
| | - Huan Yu
- College of Material Science and Art Design Inner Mongolia Agricultural University Hohhot China 010018
| | - Yinan Hao
- College of Material Science and Art Design Inner Mongolia Agricultural University Hohhot China 010018
- Inner Mongolia Key Laboratory for Sand Shrubs Fibrosis and Energy Development and Utilization Inner Mongolia Agricultural University Hohhot China 010018
| | - Jintian Huang
- College of Material Science and Art Design Inner Mongolia Agricultural University Hohhot China 010018
- Inner Mongolia Key Laboratory for Sand Shrubs Fibrosis and Energy Development and Utilization Inner Mongolia Agricultural University Hohhot China 010018
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9
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Chen J, Gao J, Liu X, Wang P, Yu X, Zhao F, Sun Y, Feng W, Wang Q. Controllable Phase Transformation and Enhanced Photocatalytic Performance of Nano-TiO 2 by Using Oxalic Acid. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3019. [PMID: 36080062 PMCID: PMC9458251 DOI: 10.3390/nano12173019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/20/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
Degradation of organic pollutants, especially organic dyes and antibiotics, by semiconductor photocatalysts is an efficient strategy for wastewater treatment. TiO2 nanomaterials are considered to be promising photocatalysts due to their high chemical stability, high efficiency and availability. Anatase TiO2 generally has superior photocatalytic activity to the rutile phase. However, the anatase phase can be irreversibly transformed to rutile phase when calcined at an elevated temperature. Methods to improve the stability of anatase are especially important for the TiO2 gas sensors working at high temperatures. The addition of strong acids can effectively suppress this transformation process. However, these strong acids are relatively expensive, corrosive and environmentally unfriendly. Herein, oxalic acid (OA) as a natural acid was used to control the hydrolysis process of tetrabutyl titanate (TBOT), leading to controllable crystalline phase transformation and reduced crystalline size of TiO2 on the nanoscale. What is more, the photocatalytic degradation performances were enhanced continuously when the molar ratio of OA to TBOT increased. The degradation reaction rate constants of CT650-R25 were about 10 times that of CT650-R0. The mechanism study shows that the enhanced photocatalytic activity can be attributed to the improved dispersibility, increased specific surface area and reduced recombination rates of photo-induced charge carriers and decreased energy bands as the concentration of OA increased. Thus, this work provides a simple, mild and effective method for controlling the crystalline forms of nano-TiO2 with enhanced photocatalytic performance towards waste water treatment.
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Affiliation(s)
- Jiaqi Chen
- School of Mechanical Engineering, Chengdu University, Chengdu 610000, China
| | - Jian Gao
- School of Mechanical Engineering, Chengdu University, Chengdu 610000, China
| | - Xiaoyang Liu
- School of Mechanical Engineering, Chengdu University, Chengdu 610000, China
| | - Pan Wang
- School of Mechanical Engineering, Chengdu University, Chengdu 610000, China
| | - Xue Yu
- School of Mechanical Engineering, Chengdu University, Chengdu 610000, China
| | - Feng Zhao
- Institute for Advanced Materials Deformation and Damage from Multi-Scale, Chengdu University, Chengdu 610106, China
| | - Yan Sun
- School of Mechanical Engineering, Chengdu University, Chengdu 610000, China
| | - Wei Feng
- School of Mechanical Engineering, Chengdu University, Chengdu 610000, China
| | - Qingyuan Wang
- School of Mechanical Engineering, Chengdu University, Chengdu 610000, China
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10
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Wang L, Lu Y, Ma S, Lian Z, Gu X, Li J, Li Z, Liu Q. Optimizing CO2 reduction and evolution reaction mediated by o-phenylenediamine toward high performance Li-CO2 battery. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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11
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N and S co-doping of TiO2@C derived from in situ oxidation of Ti3C2 MXene for efficient persulfate activation and sulfamethoxazole degradation under visible light. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121460] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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12
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Pisarek M, Ambroziak R, Hołdyński M, Roguska A, Majchrowicz A, Wysocki B, Kudelski A. Nanofunctionalization of Additively Manufactured Titanium Substrates for Surface-Enhanced Raman Spectroscopy Measurements. MATERIALS 2022; 15:ma15093108. [PMID: 35591442 PMCID: PMC9101506 DOI: 10.3390/ma15093108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/15/2022] [Accepted: 04/20/2022] [Indexed: 12/10/2022]
Abstract
Powder bed fusion using a laser beam (PBF-LB) is a commonly used additive manufacturing (3D printing) process for the fabrication of various parts from pure metals and their alloys. This work shows for the first time the possibility of using PBF-LB technology for the production of 3D titanium substrates (Ti 3D) for surface-enhanced Raman scattering (SERS) measurements. Thanks to the specific development of the 3D titanium surface and its nanoscale modification by the formation of TiO2 nanotubes with a diameter of ~80 nm by the anodic oxidation process, very efficient SERS substrates were obtained after deposition of silver nanoparticles (0.02 mg/cm2, magnetron sputtering). The average SERS enhancement factor equal to 1.26 × 106 was determined for pyridine (0.05 M + 0.1 M KCl), as a model adsorbate. The estimated enhancement factor is comparable with the data in the literature, and the substrate produced in this way is characterized by the high stability and repeatability of SERS measurements. The combination of the use of a printed metal substrate with nanofunctionalization opens a new path in the design of SERS substrates for applications in analytical chemistry. Methods such as SEM scanning microscopy, photoelectron spectroscopy (XPS) and X-ray diffraction analysis (XRD) were used to determine the morphology, structure and chemical composition of the fabricated materials.
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Affiliation(s)
- Marcin Pisarek
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland; (R.A.); (M.H.); (A.R.)
- Correspondence:
| | - Robert Ambroziak
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland; (R.A.); (M.H.); (A.R.)
| | - Marcin Hołdyński
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland; (R.A.); (M.H.); (A.R.)
| | - Agata Roguska
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland; (R.A.); (M.H.); (A.R.)
| | - Anna Majchrowicz
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warsaw, Poland;
| | - Bartłomiej Wysocki
- Center of Digital Science and Technology, Cardinal Stefan Wyszynski University in Warsaw, Woycickiego 1/3, 01-938 Warsaw, Poland;
| | - Andrzej Kudelski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland;
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WITHDRAWN: Visible light assisted heterogeneous photo-Fenton-like degradation of Rhodamine B based on the Co-POM/N-TiO2 composites: Catalyst properties, photogenerated carrier transfer and degradation mechanism. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Photocatalytic Conversion of Organic Pollutants in Air: Quantum Yields Using a Silver/Nitrogen/TiO2 Mesoporous Semiconductor under Visible Light. Catalysts 2021. [DOI: 10.3390/catal11050529] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
This research studies the photocatalytic conversion of methanol (25–90 µmol/L range) as a volatile organic compound (VOC) surrogate into CO2, using a N/Ag/TiO2 photocatalyst under visible light irradiation in a Photo-CREC Air unit. The N/Ag/TiO2 mesh supported photocatalyst is prepared via the solvothermal method. While the bare-TiO2 is inactive under visible light, the N/Ag/TiO2 2 wt.% loaded stainless-steel woven mesh displays 35% quantum yields, with 80% absorbed photons and 60% methanol conversion in a 110 min irradiation period. Results obtained are assigned to silver surface plasmon resonance, silver and nitrogen species synergistic impacts on band gap, and their influence on particle agglomerate size and semiconductor acidity. The determined quantum yields under visible light in a Photo-CREC Air unit, are the highest reported in the technical literature, that these authors are aware of, with this opening unique opportunity for the use of visible light for the purification of air from VOC contaminants.
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15
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Adeniyi O, Sicwetsha S, Adesina A, Mashazi P. Immunoassay detection of tumor-associated autoantibodies using protein G bioconjugated to nanomagnet-silica decorated with Au@Pd nanoparticles. Talanta 2021; 226:122127. [PMID: 33676681 DOI: 10.1016/j.talanta.2021.122127] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 01/06/2021] [Accepted: 01/12/2021] [Indexed: 11/17/2022]
Abstract
A colorimetric immunosensor was developed for the detection of tumor-associated anti-p53 autoantibodies (anti-p53aAbs). The immunosensor platform was prepared by immobilizing human-protein (p53Ag) onto a high binding 96-well plate. The immunoassay was based on the immunometric sandwich protocol, and protein G functionalized nanomagnet-silica nanoparticles decorated with Au@Pd (Fe3O4@SiO2-NH2-Au@Pd0.30NPs-protG) was used as the detection nanobioprobe. The Fe3O4@SiO2-NH2-Au@Pd0.30NPs-protG exhibited a high binding affinity for the captured anti-p53aAbs and high catalytic performance towards the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB). The oxidation of TMB resulted in significant color change and a UV-vis absorption signal. The detection was achieved by measuring the changes in UV-Vis absorption as the concentrations of anti-p53aAbs changed. The apparent binding affinity (KD) between the p53aAbs and Fe3O4@SiO2-NH2-Au@Pd0.30NPs-protG was 35.2 ng mL-1. The plot of change in the absorption intensity against the logarithm of anti-p53aAbs was linear within 1.0-500.0 ng mL-1 with a correlation coefficient (R2) of 0.98. The detection limit (LoD) using 3σ was calculated to be 15 pg mL-1, which is lower than the conventional HRP-label based colorimetric immunoassay. The real sample detection was investigated using the serum recovery method. The recovery of the anti-p53aAbs ranges from 98.5% to 105.7%, demonstrating its potential for practical applications.
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Affiliation(s)
- Omotayo Adeniyi
- Department of Chemistry, P.O. Box 94, Makhanda, 6140, South Africa
| | | | - Abiola Adesina
- Department of Chemistry, P.O. Box 94, Makhanda, 6140, South Africa
| | - Philani Mashazi
- Department of Chemistry, P.O. Box 94, Makhanda, 6140, South Africa; Institute for Nanotechnology Innovation Rhodes University, P.O. Box 94, Makhanda, 6140, South Africa.
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16
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Japa M, Tantraviwat D, Phasayavan W, Nattestad A, Chen J, Inceesungvorn B. Simple preparation of nitrogen-doped TiO2 and its performance in selective oxidation of benzyl alcohol and benzylamine under visible light. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125743] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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17
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Khan A, Goepel M, Lisowski W, Łomot D, Lisovytskiy D, Mazurkiewicz-Pawlicka M, Gläser R, Colmenares JC. Titania/chitosan–lignin nanocomposite as an efficient photocatalyst for the selective oxidation of benzyl alcohol under UV and visible light. RSC Adv 2021; 11:34996-35010. [PMID: 35494738 PMCID: PMC9042820 DOI: 10.1039/d1ra06500a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 02/09/2022] [Accepted: 10/18/2021] [Indexed: 11/21/2022] Open
Abstract
Developing functional materials from biomass is a significant research subject due to its unique structure, abundant availability, biodegradability and low cost. A series of chitosan–lignin (CL) composites were prepared through a hydrothermal method by varying the weight ratio of chitosan and lignin. Subsequently, these CL composites were combined with titania (T) to form a nanocomposite (T/CL) using sol–gel and hydrothermal based methods. T/CL nanocomposites exhibited improved photocatalytic performance in comparison with sol–gel and hydrothermally prepared pristine titania (SGH-TiO2), towards the selective oxidation of benzyl alcohol (BnOH) to benzaldehyde (Bnald) under UV (375 nm) and visible light (515 nm). More specifically, the 75T/CL(25 : 75) nanocomposite (a representative photocatalyst from the 75T/CL nanocomposite series) showed very high selectivity (94%) towards Bnald at 55% BnOH conversion under UV light. Whereas, SGH-TiO2 titania exhibited much lower (68%) selectivity for Bnald at similar BnOH conversion. Moreover, the 75T/CL(25 : 75) nanocomposite also showed excellent Bnald selectivity (100%) at moderate BnOH conversion (19%) under visible light. Whereas, SGH-TiO2 did not show any activity for BnOH oxidation under visible light. XPS studies suggest that the visible light activity of the 75T/CL(25 : 75) nanocomposite is possibly related to the doping of nitrogen into titania from chitosan. However, according to UV-visible-DRS results, no direct evidence pertaining to the decrease in band-gap energy of titania was found upon coupling with the CL composite and the visible light activity was attributed to N-doping of titania. Overall, it was found that T/CL nanocomposites enhanced the photocatalytic performance of titania via improved light harvesting and higher selectivity through mediation of active radical species. Combining titania with chitosan–lignin composites results in an active and selective photocatalyst for the oxidation of benzyl alcohol to benzaldehyde under green light (515 nm).![]()
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Affiliation(s)
- Ayesha Khan
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw 01-224, Poland
| | - Michael Goepel
- Institute of Chemical Technology, Leipzig University, Leipzig 04103, Germany
| | - Wojciech Lisowski
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw 01-224, Poland
| | - Dariusz Łomot
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw 01-224, Poland
| | - Dmytro Lisovytskiy
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw 01-224, Poland
| | | | - Roger Gläser
- Institute of Chemical Technology, Leipzig University, Leipzig 04103, Germany
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