Controllable Synthesis of ZnO Nanoparticles with Improved Photocatalytic Performance for the Degradation of Rhodamine B under Ultraviolet Light Irradiation
In this work, two-dimensional (2D) Zn-HMT (Zn(NO<sub>3</sub>)<sub>2</sub>(HMT)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]<i><sub>n</sub></i>) nanosheets were synthesized using a facile one-step chemical precipitation i...
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MDPI AG
2023-06-01
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| author | Xinyue Ren Yien Du Xinji Qu Yumei Li Luxi Yin Kaixin Shen Jingwen Zhang Yufang Liu |
| author_facet | Xinyue Ren Yien Du Xinji Qu Yumei Li Luxi Yin Kaixin Shen Jingwen Zhang Yufang Liu |
| author_sort | Xinyue Ren |
| collection | DOAJ |
| description | In this work, two-dimensional (2D) Zn-HMT (Zn(NO<sub>3</sub>)<sub>2</sub>(HMT)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]<i><sub>n</sub></i>) nanosheets were synthesized using a facile one-step chemical precipitation in the presence of Zn(NO<sub>3</sub>)<sub>2</sub>, hexamine (HMT), and anhydrous ethanol at room temperature. Subsequently, hexagonal T<i>x</i>-ZnO (T<i>x</i>-ZnO refers to the zinc oxide (ZnO) nanoparticles) were synthesized by a high-temperature solid-phase method at different temperatures (<i>x</i> = 500, 550, 600, 650, 700, 750, and 800 °C) nanoparticles with different morphologies were synthesized by a high-temperature calcination approach using 2D Zn-HMT nanosheets as precursor. The crystal structure, morphology, specific surface areas, surface and interface properties, optical properties, and charge migration behaviors of the as-synthesized T<i>x</i>-ZnO nanoparticles were characterized by powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), automatic specific surface and aperture analyzer, X-ray photoelectron spectroscopy (XPS), UV-visible spectrophotometer, photoluminescence (PL) spectra, and electrochemical impedance spectroscopy (EIS). The photocatalytic performances and stabilities of the as-synthesized typical T<i>x</i>-ZnO nanoparticles with various morphologies were evaluated and compared with the commercial ZnO (CM-ZnO) nanoparticle. The T700-ZnO nanoparticle with spherical and irregular morphology exhibited the highest photocatalytic activity (99.12%) for the degradation of Rhodamine B (RhB), compared to T500-ZnO (92.32%), T600-ZnO (90.65%), T800-ZnO (44.04%), and the CM-ZnO (88.38%) nanoparticle, which can be attributed to the cooperative effects of higher crystallinity, bigger crystal size, the strongest separation efficiency, the lowest recombination rate, the fastest charge carrier transfer path, and the highest charge-transfer efficiency. The superior photocatalytic activity illustrated by the T700-ZnO nanoparticle makes it have potential application prospects for the treatment of organic wastewater. |
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| last_indexed | 2024-03-11T01:32:57Z |
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| spelling | doaj.art-1b586f0635594cb49f7f12b6b00c03582023-11-18T17:08:42ZengMDPI AGMolecules1420-30492023-06-012813513510.3390/molecules28135135Controllable Synthesis of ZnO Nanoparticles with Improved Photocatalytic Performance for the Degradation of Rhodamine B under Ultraviolet Light IrradiationXinyue Ren0Yien Du1Xinji Qu2Yumei Li3Luxi Yin4Kaixin Shen5Jingwen Zhang6Yufang Liu7Department of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, ChinaDepartment of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, ChinaQingdao Second Health School of Shandong Province, Qingdao 266308, ChinaQingdao Second Health School of Shandong Province, Qingdao 266308, ChinaDepartment of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, ChinaDepartment of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, ChinaDepartment of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, ChinaDepartment of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, ChinaIn this work, two-dimensional (2D) Zn-HMT (Zn(NO<sub>3</sub>)<sub>2</sub>(HMT)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]<i><sub>n</sub></i>) nanosheets were synthesized using a facile one-step chemical precipitation in the presence of Zn(NO<sub>3</sub>)<sub>2</sub>, hexamine (HMT), and anhydrous ethanol at room temperature. Subsequently, hexagonal T<i>x</i>-ZnO (T<i>x</i>-ZnO refers to the zinc oxide (ZnO) nanoparticles) were synthesized by a high-temperature solid-phase method at different temperatures (<i>x</i> = 500, 550, 600, 650, 700, 750, and 800 °C) nanoparticles with different morphologies were synthesized by a high-temperature calcination approach using 2D Zn-HMT nanosheets as precursor. The crystal structure, morphology, specific surface areas, surface and interface properties, optical properties, and charge migration behaviors of the as-synthesized T<i>x</i>-ZnO nanoparticles were characterized by powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), automatic specific surface and aperture analyzer, X-ray photoelectron spectroscopy (XPS), UV-visible spectrophotometer, photoluminescence (PL) spectra, and electrochemical impedance spectroscopy (EIS). The photocatalytic performances and stabilities of the as-synthesized typical T<i>x</i>-ZnO nanoparticles with various morphologies were evaluated and compared with the commercial ZnO (CM-ZnO) nanoparticle. The T700-ZnO nanoparticle with spherical and irregular morphology exhibited the highest photocatalytic activity (99.12%) for the degradation of Rhodamine B (RhB), compared to T500-ZnO (92.32%), T600-ZnO (90.65%), T800-ZnO (44.04%), and the CM-ZnO (88.38%) nanoparticle, which can be attributed to the cooperative effects of higher crystallinity, bigger crystal size, the strongest separation efficiency, the lowest recombination rate, the fastest charge carrier transfer path, and the highest charge-transfer efficiency. The superior photocatalytic activity illustrated by the T700-ZnO nanoparticle makes it have potential application prospects for the treatment of organic wastewater.https://www.mdpi.com/1420-3049/28/13/5135zinc oxidesemiconductor photocatalystphotocatalytic activitycooperative effects |
| spellingShingle | Xinyue Ren Yien Du Xinji Qu Yumei Li Luxi Yin Kaixin Shen Jingwen Zhang Yufang Liu Controllable Synthesis of ZnO Nanoparticles with Improved Photocatalytic Performance for the Degradation of Rhodamine B under Ultraviolet Light Irradiation Molecules zinc oxide semiconductor photocatalyst photocatalytic activity cooperative effects |
| title | Controllable Synthesis of ZnO Nanoparticles with Improved Photocatalytic Performance for the Degradation of Rhodamine B under Ultraviolet Light Irradiation |
| title_full | Controllable Synthesis of ZnO Nanoparticles with Improved Photocatalytic Performance for the Degradation of Rhodamine B under Ultraviolet Light Irradiation |
| title_fullStr | Controllable Synthesis of ZnO Nanoparticles with Improved Photocatalytic Performance for the Degradation of Rhodamine B under Ultraviolet Light Irradiation |
| title_full_unstemmed | Controllable Synthesis of ZnO Nanoparticles with Improved Photocatalytic Performance for the Degradation of Rhodamine B under Ultraviolet Light Irradiation |
| title_short | Controllable Synthesis of ZnO Nanoparticles with Improved Photocatalytic Performance for the Degradation of Rhodamine B under Ultraviolet Light Irradiation |
| title_sort | controllable synthesis of zno nanoparticles with improved photocatalytic performance for the degradation of rhodamine b under ultraviolet light irradiation |
| topic | zinc oxide semiconductor photocatalyst photocatalytic activity cooperative effects |
| url | https://www.mdpi.com/1420-3049/28/13/5135 |
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