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Yuan B, Liu Y, Qian H, Zhu R, Zhang C, Luan W. Synergistic effects of oxygen vacancies and mesoporous structures in amorphous C@TiO 2 for photocatalytic CO 2 reduction. iScience 2024; 27:110377. [PMID: 39055922 PMCID: PMC11269941 DOI: 10.1016/j.isci.2024.110377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/15/2024] [Accepted: 06/24/2024] [Indexed: 07/28/2024] Open
Abstract
In this study, the theoretical calculations proves that the combination of oxygen vacancy and amorphous carbon films in TiO2 (VO-CT) can effectively reduce the energy bandgap and work function. The minimum Gibbs free energies required for the CO2RR reaction of VO-CT are 0.20 eV, which is lower than pure TiO2. The amorphous c@TiO2 nanomaterials with oxygen vacancy and mesoporous structures (VO-MCT) are prepared with the P123 surfactant as the template and oxalic acid as an inducer. The electron paramagnetic resonance indicates the presence of abundant oxygen vacancy defects in the samples. UV-vis spectra indicate that the mesoporous structure enhances light absorption capacity. The photocatalytic CO2 reduction tests show that the highest conversion rates for CH4 and CO of VO-MCT are 14 μmol g-1 h-1 and 10.66 μmol g-1 h-1, respectively. The electron consumption rate of VO-MCT is 12.43 times higher than that of commercial TiO2 (P200).
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Affiliation(s)
- Binxia Yuan
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 201306, P.R. China
| | - Yuhao Liu
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 201306, P.R. China
| | - Hong Qian
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 201306, P.R. China
| | - Rui Zhu
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 201306, P.R. China
| | - Chengxi Zhang
- Department of Optoelectronic Information Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China
| | - Weiling Luan
- School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China
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Wang W, Qiang W, Chen C, Sun D. NH 2-MIL-125-Derived N-Doped TiO 2@C Visible Light Catalyst for Wastewater Treatment. Polymers (Basel) 2024; 16:186. [PMID: 38256985 PMCID: PMC10820814 DOI: 10.3390/polym16020186] [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: 12/03/2023] [Revised: 01/05/2024] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
The utilization of titanium dioxide (TiO2) as a photocatalyst for the treatment of wastewater has attracted significant attention in the environmental field. Herein, we prepared an NH2-MIL-125-derived N-doped TiO2@C Visible Light Catalyst through an in situ calcination method. The nitrogen element in the organic connector was released through calcination, simultaneously doping into the sample, thereby enhancing its spectral response to cover the visible region. The as-prepared N-doped TiO2@C catalyst exhibited a preserved cage structure even after calcination, thereby alleviating the optical shielding effect and further augmenting its photocatalytic performance by increasing the reaction sites between the catalyst and pollutants. The calcination time of the N-doped TiO2@C-450 °C catalyst was optimized to achieve a balance between the TiO2 content and nitrogen doping level, ensuring efficient degradation rates for basic fuchsin (99.7%), Rhodamine B (89.9%) and tetracycline hydrochloride (93%) within 90 min. Thus, this study presents a feasible strategy for the efficient degradation of pollutants under visible light.
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Affiliation(s)
- Wenbin Wang
- Institute of Chemicobiology and Functional Materials, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (W.W.); (W.Q.); (C.C.)
- Guizhou Panjiang Civil Explosion Co., Ltd., Guiyang 551404, China
| | - Wei Qiang
- Institute of Chemicobiology and Functional Materials, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (W.W.); (W.Q.); (C.C.)
| | - Chuntao Chen
- Institute of Chemicobiology and Functional Materials, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (W.W.); (W.Q.); (C.C.)
| | - Dongping Sun
- Institute of Chemicobiology and Functional Materials, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; (W.W.); (W.Q.); (C.C.)
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Li C, Wang Z, Wang L, Bai Q, Wang B, Hao C. Synthesis and electrorheological properties of TiOF2 @SiO2 cubic-like core/shell nanocomposite. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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The electrorheological response behavior of small coral-like H2Ti2O5@SiO2 core-shell nanoparticles. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.09.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Zhang G, Zhao X, Jin X, Zhao Z, Ren Y, Wang LM, Liu YD, Choi HJ. Ionic-liquid-modified TiO2 spheres and their enhanced electrorheological responses. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116696] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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6
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Synthesis and electrorheological properties of silica-coated MoS2 nanocomposites with hierarchical and core-shell structure. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.01.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Sun W, Ma J, Xi Z, Lin Y, Wang B, Hao C. Titanium oxide-coated titanium-loaded metal organic framework (MOF-Ti) nanoparticles show improved electrorheological performance. SOFT MATTER 2020; 16:9292-9305. [PMID: 32930694 DOI: 10.1039/d0sm01147a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Uniform small-sized MOF-Ti nanoparticles were prepared by a one-step hydrothermal method, and then a 5-10 nm TiO2 shell was coated onto them by using the sol-gel method, and MOF-Ti/TiO2 with a specific surface area of 50.2 m2 g-1 was successfully prepared. The nanoparticles were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), nitrogen adsorption-desorption isotherms (BET), and X-ray photoelectron spectroscopy (XPS). The above-analyses have elaborated the experimental study of their morphology, elements, and energy of organic functional groups. At the same time, through the use of a high-voltage rotary rheometer to test their rheological properties, the analysis of shear stress, ER efficiency, shear viscosity, etc. was performed and their dielectric constant and dielectric loss were studied by using a broadband dielectric spectrometer. Finally, we found that MOF-Ti/TiO2 is a new core-shell nanocomposite particle with a small particle size and good electrorheological properties.
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Affiliation(s)
- Weijian Sun
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Jiabin Ma
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Zhenyu Xi
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Yusheng Lin
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Baoxiang Wang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China. and State Key Laboratory of Advanced Power Transmission Technology (Global Energy Interconnection Research Institute Co., Ltd.), Beijing 102209, P. R. China
| | - Chuncheng Hao
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China. and State Key Laboratory of Advanced Power Transmission Technology (Global Energy Interconnection Research Institute Co., Ltd.), Beijing 102209, P. R. China
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An electrochemiluminescence aptasensor based on Ru(bpy)32+ encapsulated titanium-MIL-125 metal-organic framework for bisphenol A assay. Mikrochim Acta 2020; 187:227. [DOI: 10.1007/s00604-020-4210-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 03/02/2020] [Indexed: 10/24/2022]
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Sun W, Song H, Xi Z, Ma J, Wang B, Liu X, Hao C, Chen K. Synthesis and Enhanced Electrorheological Properties of TS-1/Titanium Oxide Core/Shell Nanocomposite. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b05936] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Weijian Sun
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong Province 266042, PR China
| | - Haojie Song
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong Province 266042, PR China
| | - Zhenyu Xi
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong Province 266042, PR China
| | - Jiabin Ma
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong Province 266042, PR China
| | - Baoxiang Wang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong Province 266042, PR China
- State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute Company, Ltd., Beijing 102209, PR China
| | - Xuguang Liu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong Province 266042, PR China
| | - Chuncheng Hao
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong Province 266042, PR China
- State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute Company, Ltd., Beijing 102209, PR China
| | - Kezheng Chen
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong Province 266042, PR China
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Liu Z, Chen P, Jin X, Wang LM, Liu YD, Choi HJ. Enhanced Electrorheological Response of Cellulose: A Double Effect of Modification by Urea-Terminated Silane. Polymers (Basel) 2018; 10:E867. [PMID: 30960792 PMCID: PMC6403862 DOI: 10.3390/polym10080867] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 08/01/2018] [Accepted: 08/02/2018] [Indexed: 11/20/2022] Open
Abstract
As a natural polymer with abundant sources, cellulose was one of the earliest applied electrorheological (ER) materials. However, cellulose-based ER materials have not attracted much attention because of their relatively low ER effect and sensitivity to water. In this study, cellulose rods were decorated with a urea-terminated silane, 1-(3-(trimethoxysilyl) propyl) urea, after being swelled in sodium hydroxide solution. The morphologies and structures of the cellulose particles were investigated using scanning electron microscopy, Fourier-transform infrared spectroscopy and X-ray diffraction, confirming the dramatic differences of the treated cellulose particles from the pristine cellulose. Rheological behaviors of the pristine and modified cellulose particles in silicone oil were observed using a rotational rheometer. It was found that the silane-modified cellulose showed higher ER effect and higher dielectric properties than the pristine cellulose particles, which was not only related to the grafted polar molecules but may also be associated with the porous morphologies of the treated cellulose particles.
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Affiliation(s)
- Zhao Liu
- State Key Lab of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Panpan Chen
- State Key Lab of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Xiao Jin
- State Key Lab of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Li-Min Wang
- State Key Lab of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Ying Dan Liu
- State Key Lab of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Hyoung Jin Choi
- Department of Polymer Science and Engineering, Inha University, Incheon 402751, Korea.
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