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Tasisa YE, Sarma TK, Sahu TK, Krishnaraj R. Phytosynthesis and characterization of tin-oxide nanoparticles (SnO 2-NPs) from Croton macrostachyus leaf extract and its application under visible light photocatalytic activities. Sci Rep 2024; 14:10780. [PMID: 38734791 PMCID: PMC11088712 DOI: 10.1038/s41598-024-60633-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
Nanotechnology is rapidly becoming more and more important in today's technological world as the need for industry increases with human well-being. In this study, we synthesized SnO2 nanoparticles (NPs) using an environmentally friendly method or green method from Croton macrostachyus leaf extract, leading to the transformation of UV absorbance to visible absorbance by reducing the band gap energy. The products underwent UV, FTIR, XRD, SEM, EDX, XPS, BET, and DLS for characterization. Characterization via UV-Vis spectroscopy confirmed the shift in absorbance towards the visible spectrum, indicating the potential for enhanced photocatalytic activity under visible light irradiation. The energy band gap for as-synthesized nanoparticles was 3.03 eV, 2.71 eV, 2.61 eV, and 2.41 eV for the 1:1, 1:2, 1:3, and 1:4 sample ratios, respectively. The average crystal size of 32.18 nm and very fine flakes with tiny agglomerate structures of nanoparticles was obtained. The photocatalytic activity of the green-synthesized SnO2 nanoparticles was explored under visible light irradiation for the degradation of rhodamine B (RhB) and methylene blue (MB), which were widespread fabric pollutants. It was finally confirmed that the prepared NPs were actively used for photocatalytic degradation. Our results suggest the promising application of these green-synthesized SnO2 NPs as efficient photocatalysts for environmental remediation with low energy consumption compared to other light-driven processes. The radical scavenging experiment proved that hydroxyl radicals (_OH) are the predominant species in the reaction kinetics of both pollutant dyes under visible light degradation.
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Affiliation(s)
- Yonas Etafa Tasisa
- Department of Physics, College of Natural and Computational Sciences, Wollega University, Nekemte, Ethiopia
- Department of Chemistry, Indian Institute of Technology Indore, Indore, 453552, Madhya Pradesh, India
| | - Tridib Kumar Sarma
- Department of Chemistry, Indian Institute of Technology Indore, Indore, 453552, Madhya Pradesh, India
| | - Tarun Kumar Sahu
- Department of Chemistry, Indian Institute of Technology Indore, Indore, 453552, Madhya Pradesh, India
| | - Ramaswamy Krishnaraj
- Department of Mechanical Engineering, College of Engineering and Technology, Dambi Dollo University, Dembi Dolo, Ethiopia.
- Center for Global Health Research, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India.
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Tamyiz M, Doong RA. Synergetic effect of adsorption and photocatalysis by zinc ferrite-anchored graphitic carbon nitride nanosheet for the removal of ciprofloxacin under visible light irradiation. OPEN CHEM 2023. [DOI: 10.1515/chem-2022-0304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
Abstract
Ciprofloxacin (CIP) belongs to the fluoroquinolone antibiotic family. It is mostly used for the treatment of bacterial infections and highly recalcitrant to naturally decompose. The nanocomposite was successfully constructed by zinc ferrite nanoparticle anchored onto graphitic carbon nitride nanosheet (ZFNP–CNNS). The structural, morphological, and optical properties of the ZFNP–CNNS nanocomposite were investigated. Moreover, the enhanced photocatalytic performance of the ZFNP–CNNS nanocomposite was a result of the synergetic effect between adsorption and photocatalysis. The adsorption study showed that the ZFNP–CNNS nanocomposite has heterogeneous active sites with multilayers and the maximum CIP adsorption capacity was 15.49 mg g−1. However, the photodegradation efficacy of CIP reached up to five times compared to that of pristine CNNS. The high adsorption–photocatalytic synergetic effect of the ZFNP–CNNS nanocomposite has great application in wastewater treatment.
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Kar A, Dagar P, Kumar S, Singh Deo I, Vijaya Prakash G, Kumar Ganguli A. Photoluminescence and lifetime studies of C-dot decorated CdS/ZnFe2O4 composite designed for photoelectrochemical applications. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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Algarni TS, Al-Mohaimeed AM, Al-Odayni AB, Abduh NAY. Activated Carbon/ZnFe 2O 4 Nanocomposite Adsorbent for Efficient Removal of Crystal Violet Cationic Dye from Aqueous Solutions. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3224. [PMID: 36145011 PMCID: PMC9502794 DOI: 10.3390/nano12183224] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/09/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
The aim of this study was to investigate the potential advantage of ZnFe2O4-incorporated activated carbon (ZFAC), fabricated via a simple wet homogenization, on the removal of cationic dye crystal violet (CV) from its aqueous solutions. The as-prepared ZFAC nanocomposite was characterized using Fourier transform infrared (FTIR), X-ray diffraction (XRD), nitrogen adsorption, scanning electron microscope (SEM), thermogravimetric analysis (TGA), and ultraviolet-visible (UV-Vis). Batch adsorption operating conditions such as the pH (3-11), CV concentration (25-200 ppm), ZFAC dose (10-50 mg), temperature (23-45 °C), and contact time were evaluated. The results indicate pH-dependent uptake (optimum at pH 7.2) increased with temperature and CV concentration increase and decreased as adsorbent dose increased. Modeling of experimental data revealed better fit to the Langmuir than Freundlich and Temkin isotherms, with maximum monolayer capacities (Qm) of 208.29, 234.03, and 246.19 mg/g at 23, 35, and 45 °C, respectively. Kinetic studies suggest pseudo-second order; however, the intra-particle diffusion model indicates a rate-limiting step controlled by film diffusion mechanism. Based on the thermodynamic parameters, the sorption is spontaneous (-ΔG°), endothermic (+ΔH°), and random process (+ΔS°), and their values support the physical adsorption mechanism. In addition to the ease of preparation, the results confirm the potential of ZFAC as a purifier for dye removal from polluted water.
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Affiliation(s)
- Tahani Saad Algarni
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Amal M. Al-Mohaimeed
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdel-Basit Al-Odayni
- Restorative Dental Sciences Department, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Naaser A. Y. Abduh
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Novel heterojunction magnetic composite MIL-53 (Fe)/ZnFe2O4: Synthesis and photocatalytic pollutant degradation. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-022-1140-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Synthesis, Performance Measurement of Bi 2SmSbO 7/ZnBiYO 4 Heterojunction Photocatalyst and Photocatalytic Degradation of Direct Orange within Dye Wastewater under Visible Light Irradiation. MATERIALS 2022; 15:ma15113986. [PMID: 35683292 PMCID: PMC9182428 DOI: 10.3390/ma15113986] [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: 12/31/2021] [Revised: 02/28/2022] [Accepted: 05/31/2022] [Indexed: 02/04/2023]
Abstract
Originally, the new catalyst Bi2SmSbO7 was synthesized by the hydrothermal synthesis method or by the solid-phase sintering method at a lofty temperature. A solvothermal method was utilized to prepare a Bi2SmSbO7/ZnBiYO4 heterojunction photocatalyst (BZHP). The crystal structure of Bi2SmSbO7 belonged to the pyrochlore structure and face-centered cubic crystal system by the space group of Fd3m. The cell parameter a was equivalent to 10.835(1) Å (Bi2SmSbO7). With Bi2SmSbO7/ZnBiYO4 heterojunction (BZH) as the photocatalyst, the removal rate (RR) of direct orange (DO) and the total organic carbon were 99.10% and 96.21% after visible light irradiation of 160 min (VLI-160M). The kinetic constant k toward DO concentration and visible light irradiation time (VLI) with BZH as photocatalyst reached 2.167 min−1. The kinetic constant k, which was concerned with total organic carbon, reached 0.047 min−1. The kinetic curve that came from DO degradation with BZH as a catalyst under VLI conformed to the second-order reaction kinetics. After VLI-160M, the photocatalytic degradation (PD) removal percentage of DO with BZH as the photocatalyst was 1.200 times, 1.268 times or 3.019 times that with Bi2SmSbO7 as the photocatalyst, ZnBiYO4 as the photocatalyst or with nitrogen-doped titanium dioxide as the photocatalyst. The photocatalytic activity (PA) was as following: BZH > Bi2SmSbO7 > ZnBiYO4 > nitrogen-doped titanium dioxide. After VLI-160M for three cycles of experiments with BZH as the photocatalyst, the RR of DO reached 98.03%, 96.73% and 95.43%, respectively, which meant that BZHP possessed high stability. By using the experiment of adding a trapping agent, the oxidative purifying capability for degradation of direct orange, which was in gradual depressed order, was as following: hydroxyl radical > superoxide anion > holes. Finally, the possible degradation pathway and degradation mechanism of DO were discussed systematically. A new high active heterojunction catalyst BZHP, which could efficiently remove toxic organic pollutants such as DO from dye wastewater after VLI, was obtained. Our research was meant to improve the photocatalytic property of the single photocatalyst.
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Nguyen TB, Thai VA, Chen CW, Huang C, Doong RA, Chen L, Dong CD. N-doping modified zeolitic imidazole Framework-67 (ZIF-67) for enhanced peroxymonosulfate activation to remove ciprofloxacin from aqueous solution. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120719] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Saxena S, Verma A, Asha K, Biswas NK, Srivastav A, Satsangi VR, Shrivastav R, Dass S. BiVO 4/Fe 2O 3/ZnFe 2O 4; triple heterojunction for an enhanced PEC performance for hydrogen generation. RSC Adv 2022; 12:12552-12563. [PMID: 35496341 PMCID: PMC9041422 DOI: 10.1039/d2ra00900e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 04/03/2022] [Indexed: 11/21/2022] Open
Abstract
n/n/n triple heterojunction photoanodes made up of Zr:W-BiVO4, Fe2O3, and ZnFe2O4 metal oxides are fabricated through a simplistic spray pyrolysis method. Use of Zr and W as dopants in BiVO4 plays an important role as Zr increases the carrier density and W reduces the charge recombination. Further, Fe2O3 and ZnFe2O4 serve as a protective layer for Zr:W-BiVO4, which augmented the photoelectrochemical performance and achieved a 1.90% conversion efficiency in the triple heterojunction. XRD measurements display the crystalline nature and reduction in particle size due to strain in the sample, UV-vis absorbance shows an extended absorption towards the visible region and the FE-SEM imaging confirms the successful deposition of ZnFe2O4 over BiVO4/Fe2O3. By analyzing the band edge position, it was observed that on formation, the triple heterojunction not only suppresses the charge carrier recombination but also utilizes the band edge offset for the water splitting reaction using solar energy. n/n/n triple heterojunction photoanodes made up of Zr:W-BiVO4, Fe2O3, and ZnFe2O4 metal oxides.![]()
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Affiliation(s)
- Sakshi Saxena
- Department of Chemistry, Dayalbagh Educational Institute Dayalbagh Agra 282005 India
| | - Anuradha Verma
- Department of Chemistry, Dayalbagh Educational Institute Dayalbagh Agra 282005 India
| | - Kumari Asha
- Department of Chemistry, Dayalbagh Educational Institute Dayalbagh Agra 282005 India
| | - Neeraj Kumar Biswas
- Department of Chemistry, Dayalbagh Educational Institute Dayalbagh Agra 282005 India
| | - Anupam Srivastav
- Department of Chemistry, Dayalbagh Educational Institute Dayalbagh Agra 282005 India
| | - Vibha Rani Satsangi
- Department of Physics and Computer Science, Dayalbagh Educational Institute Dayalbagh Agra 282005 India
| | - Rohit Shrivastav
- Department of Chemistry, Dayalbagh Educational Institute Dayalbagh Agra 282005 India
| | - Sahab Dass
- Department of Chemistry, Dayalbagh Educational Institute Dayalbagh Agra 282005 India
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Synthesis, Property Characterization and Photocatalytic Activity of the Ag3PO4/Gd2BiTaO7 Heterojunction Catalyst under Visible Light Irradiation. Catalysts 2021. [DOI: 10.3390/catal12010022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A new type of Gd2BiTaO7 nanocatalyst (GBT) was synthesized by a high-temperature solid-phase method, and a heterojunction photocatalyst, which was composed of GBT and silver phosphate (AP), was prepared by the facile in-situ precipitation method for the first time. The photocatalytic property of GBT or the Ag3PO4/Gd2BiTaO7 heterojunction photocatalyst (AGHP) was reported. The structural properties of GBT and AGHP were characterized by an X-ray diffractometer, scanning electron microscope–X-ray energy dispersive spectra, an X-ray photoelectron spectrograph, a synchrotron-based ultraviolet photoelectron spectroscope, a Fourier transform infrared spectrometer, an UV-Vis diffuse reflectance spectrophotometer and an electron paramagnetic resonance spectrometer. The results displayed that GBT was well crystallized with a stable cubic crystal system and space group Fd3m. The lattice parameter or band gap energy of GBT was found to be a = 10.740051 Å or 2.35 eV, respectively. After visible light irradiation of 30 min, the removal rate of bisphenol A (BPA) reached 99.52%, 95.53% or 37.00% with AGHP as the photocatalyst, with Ag3PO4 and potassium persulfate (AP-PS) as photocatalysts or with N-doped TiO2 (NT) as a photocatalyst, respectively. According to the experimental data, it could be found that the removal rate of BPA with AGHP as a photocatalyst was 2.69 times higher than that with NT as a photocatalyst. AGHP showed higher photocatalytic activity for photocatalytic degradation of BPA under visible light irradiation compared with GBT or AP-PS or NT. The removal rate of total organic carbon (TOC) was 96.21%, 88.10% or 30.55% with AGHP as a photocatalyst, with AP-PS as photocatalysts or with NT as a photocatalyst after visible light irradiation of 30 min. The above results indicated that AGHP possessed the maximal mineralization percentage ratio during the process of degrading BPA compared with GBT or AP-PS or NT. The results indicated that the main oxidation radical was •OH during the process of degrading BPA. The photocatalytic degradation of BPA with AGHP as a photocatalyst conformed to the first-order reaction kinetics. This study provided inspiration for obtaining visible light-responsive heterojunction photocatalysts with high catalytic activity and efficient removal technologies for organic pollutants and toxic pollutants, and as a result, the potential practical applications of visible light-responsive heterojunction photocatalysts were widened. The subsequent research of thin-film plating of the heterojunction catalysts and the construction of complete photoluminescent thin-film catalytic reaction systems, which utilized visible light irradiation, could provide new technologies and perspectives for the pharmaceutical wastewater treatment industry.
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Wu L, Lin Y, Zhang Y, Wang P, Ding M, Nie M, Yan C, Chen S. Ca(OH) 2-mediated activation of peroxymonosulfate for the degradation of bisphenol S. RSC Adv 2021; 11:33626-33636. [PMID: 35497526 PMCID: PMC9042291 DOI: 10.1039/d1ra05286a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/20/2021] [Indexed: 12/28/2022] Open
Abstract
Alkaline substances could activate peroxymonosulfate (PMS) for the removal of organic pollutants, but relatively high alkali consumption is generally required, which can cause too high pH of the solution after the reaction and lead to secondary pollution. Within this study, PMS activated by a relatively low dosage of Ca(OH)2 (1 mM) exhibited excellent efficiency in the removal of bisphenol S (BPS). The pH of the solution declined to almost neutral (pH = 8.2) during the reaction period and conformed to the direct emission standards (pH = 6–9). In a typical case, BPS was completely degraded within 240 min and followed the kinetics of pseudo-first-order. The degradation efficiency of BPS depended on the operating parameters, such as the Ca(OH)2, PMS and BPS dosages, initial solution pH, reaction temperature, co-existing anions, humic acid (HA), and water matrices. Quenching experiments were performed to verify that singlet oxygen (1O2) and superoxide radicals (O2˙−) were the predominant ROS. Degradation of BPS has been significantly accelerated as the temperature increased. Furthermore, degradation of BPS could be maintained at a high level across a broad range of pH values (5.3–11.15). The SO4−, NO3− did not significantly impact the degradation of BPS, however, both HCO3− and HA inhibited oxidation of BPS by the Ca(OH)2/PMS system, and Cl− had a dual-edged sword effect on BPS degradation. In addition, based on the 4 identified intermediates, 3 pathways of BPS degradation were proposed. The degradation of BPS was lower in domestic wastewater compared to other naturals waters and ultrapure; nevertheless, up to 75.86%, 77.94% and 81.48% of BPS was degraded in domestic wastewater, Yaohu Lake water and Poyang Lake water, respectively. Finally, phenolic chemicals and antibiotics, including bisphenol A, norfloxacin, lomefloxacin hydrochloride, and sulfadiazine could also be efficiently removed via the Ca(OH)2/PMS system. Ca(OH)2 can activate PMS to effectively remove BPS, and it can meet the requirements of direct discharge after reaction.![]()
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Affiliation(s)
- Leliang Wu
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University Nanchang 330022 China
| | - Yiting Lin
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University Nanchang 330022 China
| | - Yimin Zhang
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University Nanchang 330022 China
| | - Peng Wang
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University Nanchang 330022 China
| | - Mingjun Ding
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University Nanchang 330022 China
| | - Minghua Nie
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University Nanchang 330022 China .,Key Laboratory of Eco-geochemistry, Ministry of Natural Resource Beijing 100037 China
| | - Caixia Yan
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University Nanchang 330022 China
| | - Shiyao Chen
- School of Geography and Environment, Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University Nanchang 330022 China
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Dadigala R, Bandi R, Alle M, Gangapuram BR, Guttena V, Kim JC. In-situ fabrication of novel flower like MoS 2/CoTiO 3 nanorod heterostructures for the recyclable degradation of ciprofloxacin and bisphenol A under sunlight. CHEMOSPHERE 2021; 281:130822. [PMID: 34010718 DOI: 10.1016/j.chemosphere.2021.130822] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 05/02/2021] [Accepted: 05/07/2021] [Indexed: 05/14/2023]
Abstract
Effectual degradation of toxic water contaminants is a crucial step in water purification and designing an efficient semiconductor based hybrid structure photocatalyst is a good approach to achieve this. Benefiting from the combination of semiconductors, a series of novel visible-light active flower-like MoS2/CoTiO3 nanorod heterostructures with excellent morphological contact interface were prepared through a facile in-situ hydrothermal process. These heterostructures were well characterized and demonstrated high photocatalytic performance for ciprofloxacin (CIP) and bisphenol A (BPA) under sunlight irradiation. Compared to pristine CoTiO3 and MoS2, the optimal catalyst (5 wt% MoS2/CoTiO3) presented 39.97 and 22.32 times higher activity for CIP degradation and 26.85 and 15.66 times higher activity for BPA degradation, respectively. This improved activity can be accounted for the effective interfacial contact which promotes the efficient charge carriers separation and reduce its recombination. The catalyst exhibited decent stability and was potentially reused for five cycles without significant loss in activity. Furthermore, based on active species scavenging experiments the plausible photodegradation mechanism is discussed in detail.
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Affiliation(s)
- Ramakrishna Dadigala
- Department of Chemistry, Osmania University, Hyderabad, Telangana state, 500007, India
| | - Rajkumar Bandi
- Institute of Forest Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Madhusudhan Alle
- Institute of Forest Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Bhagavanth Reddy Gangapuram
- Department of Chemistry, PG Center Wanaparthy, Palamuru University, Mahabub Nagar, Telangana State, 509001, India
| | - Veerabhadram Guttena
- Department of Chemistry, Osmania University, Hyderabad, Telangana state, 500007, India.
| | - Jin-Chul Kim
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon, 24341, Republic of Korea.
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Islam JB, Furukawa M, Tateishi I, Katsumata H, Kaneco S. Formic acid motivated photocatalytic reduction of Cr(VI) to Cr(III) with ZnFe 2O 4 nanoparticles under UV irradiation. ENVIRONMENTAL TECHNOLOGY 2021; 42:2740-2748. [PMID: 31916510 DOI: 10.1080/09593330.2020.1713902] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 01/05/2020] [Indexed: 06/10/2023]
Abstract
UV-light irradiated photocatalytic reduction of Cr(VI) to Cr(III) in aqueous solution using ZnFe2O4 nanoparticles in the presence of formic acid was reported. X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and UV-Vis diffuse reflectance spectroscopy (DRS) were employed to characterize ZnFe2O4 nanoparticles. The photocatalytic activity of pure ZnFe2O4 under UV irradiation was significantly low. However, the Cr(VI) reduction efficiency on nano-sized ZnFe2O4 in the presence of 0.40% formic acid reached 95.4% within 4 h. Herein, the effect of pH, photocatalyst amount, initial concentration of Cr(VI) and formic acid concentration on the photocatalytic reduction of Cr(VI) was investigated. The results indicated that the photocatalytic reduction of Cr(VI) decreased with increase in the initial concentration of Cr(VI), photocatalyst dosage and pH. The reduction rate constant declined from 0.017 min-1 to 0.0023 min-1 with the increase in initial concentration of Cr(VI) from 5 to 25 mg L-1. However, the reduction rate constant sharply increased from 0.000075 min-1 to 0.0127 min-1 with the increase in formic acid concentration from 0.05% to 0.40%. The formic acid could capture the photogenerated holes, and eventually formate (HCOO-) ions could be converted into carbon dioxide radicals (•CO2-). Because of more negative redox potential for •CO2- radicals, Cr(VI) species could easily be reduced to Cr(III) under UV irradiation. The pseudo-first-order kinetic reaction was confirmed for this reduction process. A tenable mechanism for the photocatalytic Cr(VI) reduction has also been demonstrated.
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Affiliation(s)
- Jahida Binte Islam
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Japan
| | - Mai Furukawa
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Japan
| | - Ikki Tateishi
- Global Environment Center for Education & Research, Mie University, Tsu, Japan
| | - Hideyuki Katsumata
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Japan
| | - Satoshi Kaneco
- Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Japan
- Global Environment Center for Education & Research, Mie University, Tsu, Japan
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Facile hydrothermal preparation of a ZnFe2O4/TiO2 heterojunction for NOx removal. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Lian P, Qin A, Liao L, Zhang K. Progress on the nanoscale spherical TiO
2
photocatalysts: Mechanisms, synthesis and degradation applications. NANO SELECT 2020. [DOI: 10.1002/nano.202000091] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Peng Lian
- Key Lab New Processing Technology for Nonferrous Metals & Materials Ministry of Education College of Materials Science and Engineering Guilin University of Technology Guilin P. R. China
| | - Aimiao Qin
- Key Lab New Processing Technology for Nonferrous Metals & Materials Ministry of Education College of Materials Science and Engineering Guilin University of Technology Guilin P. R. China
| | - Lei Liao
- College of Environmental Science and Engineering Guilin University of Technology Guilin P. R. China
| | - Kaiyou Zhang
- Key Lab New Processing Technology for Nonferrous Metals & Materials Ministry of Education College of Materials Science and Engineering Guilin University of Technology Guilin P. R. China
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Ahmadpour N, Sayadi MH, Sobhani S, Hajiani M. Photocatalytic degradation of model pharmaceutical pollutant by novel magnetic TiO 2@ZnFe 2O 4/Pd nanocomposite with enhanced photocatalytic activity and stability under solar light irradiation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 271:110964. [PMID: 32778273 DOI: 10.1016/j.jenvman.2020.110964] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 06/05/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
In the last decades, the use of magnetic nanocomposites as a catalyst was considered for removal of organic pollutants due to its easy separation. Therefore, initially, TiO2@ZnFe2O4/Pd nanocomposite was prepared and then used in the photodegradation of diclofenac under direct solar irradiation in the batch and continuous systems. The structure, morphology and other specifications of produced nanocatalyst were determined via XRD, VSM, FESEM/EDX, FTIR, GTA, UV-Vis, Zeta potential, XPS and ICP-OES. The effective factors on diclofenac removal via nanophotocatalyst viz. pH, catalyst concentration, initial concentration of diclofenac, and flow rate and column length on diclofenac photodegradation were studied. Based on the results, the optimal rate for pH, catalyst concentration, and initial concentration of diclofenac was 4, 0.03 g/l and 10 mg/l respectively. Pd-coated TiO2@ZnFe2O4 magnetic photocatalyst had higher photocatalytic activity in diclofenac photodegradation in relation to ZnFe2O4 and TiO2@ZnFe2O4 under solar light irradiation. The findings showed that after five recycles, the photocatalytic efficiency did not show much reduction i.e. the removal efficiency from 86.1% in the first cycle reduced only to 71.38% in the last cycle. Likewise, in this study, with flow rate reduction and column length increase diclofenac degradation rate increased.
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Affiliation(s)
- Najmeh Ahmadpour
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, University of Birjand, Birjand, Iran
| | - Mohammad Hossein Sayadi
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, University of Birjand, Birjand, Iran.
| | - Sara Sobhani
- Department of Chemistry, College of Sciences, University of Birjand, Birjand, Iran
| | - Mahmood Hajiani
- Department of Environmental Engineering, Faculty of Natural Resources and Environment, University of Birjand, Birjand, Iran
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16
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Perović K, dela Rosa FM, Kovačić M, Kušić H, Štangar UL, Fresno F, Dionysiou DD, Loncaric Bozic A. Recent Achievements in Development of TiO 2-Based Composite Photocatalytic Materials for Solar Driven Water Purification and Water Splitting. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E1338. [PMID: 32183457 PMCID: PMC7142427 DOI: 10.3390/ma13061338] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/06/2020] [Accepted: 03/11/2020] [Indexed: 01/20/2023]
Abstract
Clean water and the increased use of renewable energy are considered to be two of the main goals in the effort to achieve a sustainable living environment. The fulfillment of these goals may include the use of solar-driven photocatalytic processes that are found to be quite effective in water purification, as well as hydrogen generation. H2 production by water splitting and photocatalytic degradation of organic pollutants in water both rely on the formation of electron/hole (e-/h+) pairs at a semiconducting material upon its excitation by light with sufficient photon energy. Most of the photocatalytic studies involve the use of TiO2 and well-suited model compounds, either as sacrificial agents or pollutants. However, the wider application of this technology requires the harvesting of a broader spectrum of solar irradiation and the suppression of the recombination of photogenerated charge carriers. These limitations can be overcome by the use of different strategies, among which the focus is put on the creation of heterojunctions with another narrow bandgap semiconductor, which can provide high response in the visible light region. In this review paper, we report the most recent advances in the application of TiO2 based heterojunction (semiconductor-semiconductor) composites for photocatalytic water treatment and water splitting. This review article is subdivided into two major parts, namely Photocatalytic water treatment and Photocatalytic water splitting, to give a thorough examination of all achieved progress. The first part provides an overview on photocatalytic degradation mechanism principles, followed by the most recent applications for photocatalytic degradation and mineralization of contaminants of emerging concern (CEC), such as pharmaceuticals and pesticides with a critical insight into removal mechanism, while the second part focuses on fabrication of TiO2-based heterojunctions with carbon-based materials, transition metal oxides, transition metal chalcogenides, and multiple composites that were made of three or more semiconductor materials for photocatalytic water splitting.
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Affiliation(s)
- Klara Perović
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulicev trg 19, HR–10000 Zagreb, Croatia; (K.P.); (F.M.d.R.); (M.K.); (A.L.B.)
| | - Francis M. dela Rosa
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulicev trg 19, HR–10000 Zagreb, Croatia; (K.P.); (F.M.d.R.); (M.K.); (A.L.B.)
| | - Marin Kovačić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulicev trg 19, HR–10000 Zagreb, Croatia; (K.P.); (F.M.d.R.); (M.K.); (A.L.B.)
| | - Hrvoje Kušić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulicev trg 19, HR–10000 Zagreb, Croatia; (K.P.); (F.M.d.R.); (M.K.); (A.L.B.)
| | - Urška Lavrenčič Štangar
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, 1000 Ljubljana, Slovenia;
| | - Fernando Fresno
- Photoactivated Processes Unit, IMDEA Energy, Móstoles, 28935 Madrid, Spain;
| | - Dionysios D. Dionysiou
- Environmental Engineering and Science Program, University of Cincinnati, Cincinnati, OH 45221–0012, USA;
| | - Ana Loncaric Bozic
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulicev trg 19, HR–10000 Zagreb, Croatia; (K.P.); (F.M.d.R.); (M.K.); (A.L.B.)
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17
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Erusappan E, Thiripuranthagan S, Durai M, Kumaravel S, Vembuli T. Photocatalytic performance of visible active boron nitride supported ZnFe 2O 4 (ZnFe 2O 4/BN) nanocomposites for the removal of aqueous organic pollutants. NEW J CHEM 2020. [DOI: 10.1039/d0nj01272f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
ZnFe2O4/BN nanocomposites were synthesized using solvothermal method. The microscopic images revealed uniform dispersion of ZnFe2O4 nanospheres on the surface of BN nanosheets. PL studies showed lower e−/h+ pair recombination. ZnFe2O4/9.3% BN showed outstanding photocatalytic activity.
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Affiliation(s)
- Elangovan Erusappan
- Catalysis Laboratory
- Department of Applied Science and Technology
- A.C. Tech
- Anna University
- Chennai
| | | | - Mani Durai
- Centre for Nanoscience and Technology
- A.C. Tech
- Anna University
- Chennai
- India
| | - Sakthivel Kumaravel
- Catalysis Laboratory
- Department of Applied Science and Technology
- A.C. Tech
- Anna University
- Chennai
| | - Thanigaivel Vembuli
- Catalysis Laboratory
- Department of Applied Science and Technology
- A.C. Tech
- Anna University
- Chennai
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18
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Visible-Light-Responsive Nanostructured Materials for Photocatalytic Degradation of Persistent Organic Pollutants in Water. ENVIRONMENTAL CHEMISTRY FOR A SUSTAINABLE WORLD 2020. [DOI: 10.1007/978-3-030-16427-0_1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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19
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Venkat Savunthari K, Shanmugam S. Effect of co-doping of bismuth, copper and cerium in zinc ferrite on the photocatalytic degradation of bisphenol A. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.04.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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20
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Nguyen TB, Doong RA, Huang CP, Chen CW, Dong CD. Activation of persulfate by CoO nanoparticles loaded on 3D mesoporous carbon nitride (CoO@meso-CN) for the degradation of methylene blue (MB). THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 675:531-541. [PMID: 31030159 DOI: 10.1016/j.scitotenv.2019.04.230] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/07/2019] [Accepted: 04/15/2019] [Indexed: 06/09/2023]
Abstract
A simple and facile synthesis method is developed for the fabrication of CoO loaded ordered mesoporous carbon nitride (CoO@meso-CN) composites, at various CoO loadings, and used, for the first time, to activate persulfate (PS) for methylene blue (MB) degradation. The interfacial interaction between the ultrafine CoO nanoparticles, immobilized by high surface area, regular mesopores, and graphitic nature of the meso-CN support can further enhance the catalytic activation of PS for methylene blue (MB) degradation. Among all catalysts studied, the 5-wt% CoO@meso-CN exhibits the best catalytic performance with a kobs of 0.264 min-1. High initial pH, especially at pH-11, is more beneficial for PS activation. Furthermore, the CoO@meso-CN nanocatalyst is highly stable with a consistently high degree of MB degradation and negligible cobalt leaching for at least 5 consecutive catalytic cycles. Both SO4- and OH are the major reactive species based on results of EPR and quenching experiments. The degradation intermediates of MB are also identified by HPLC/MS/MS and the possible degradation pathway is proposed. Results clearly demonstrate that CoO@meso-CN is a promising green catalyst with enormous potential for the remediation of hazardous chemicals using PS.
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Affiliation(s)
- Thanh Binh Nguyen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Ruey-An Doong
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - C P Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark 19716, DE, USA
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
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21
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de Luna MDG, Paragas LKB, Doong RA. Insights into the rapid elimination of antibiotics from aqueous media by tunable C 3N 4 photocatalysts: Effects of dopant amount, co-existing ions and reactive oxygen species. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 669:1053-1061. [PMID: 30970454 DOI: 10.1016/j.scitotenv.2019.03.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/28/2019] [Accepted: 03/01/2019] [Indexed: 06/09/2023]
Abstract
Conventional photocatalytic nanomaterials are not environmentally sustainable since these are usually produced from scarce mineral and metal precursors. Moreover, high pollutant removal efficiencies by conventional photocatalysts are only attained after several hours of reaction with light. In this study, novel visible light-active photocatalysts were synthesized from environment-friendly carbon precursors and applied for the rapid degradation of sulfamethoxazole (SMX) in aqueous solutions. The photocatalysts were prepared via the co-pyrolysis of urea with varying doping temperature and dopant amount. These variations played a vital role in improving the performance of the photocatalysts and resulted in up to >99% SMX removal within 45 min of visible light irradiation. Characterization of the photocatalysts showed that potassium and iodine dopants were responsible in the red shift and broadening of the light absorption spectrum to the visible region. In addition, the band gap energy narrowed by 0.23 eV resulting in faster charge transfer but slower recombination of the photo-generated electron and hole pairs. Effects of varying concentrations of inorganic salts (NO3-, SO42-, Cl-, PO43-) on SMX removal were also examined. Lastly, the mechanism of SMX photodegradation was elucidated.
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Affiliation(s)
- Mark Daniel G de Luna
- Department of Chemical Engineering, College of Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines; Environmental Engineering Program, National Graduate School of Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines.
| | - Larah Kriselle B Paragas
- Environmental Engineering Program, National Graduate School of Engineering, University of the Philippines Diliman, Quezon City 1101, Philippines
| | - Ruey-An Doong
- Institute of Environmental Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan; Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan.
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22
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Effect of Surface Chemistry and Crystallographic Parameters of TiO2 Anatase Nanocrystals on Photocatalytic Degradation of Bisphenol A. Catalysts 2019. [DOI: 10.3390/catal9050447] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The photocatalytic activity of a series of anatase TiO2 materials with different amounts of exposed (001) facets (i.e., 12% (TiO2-1), 38% (TiO2-3), and 63% (TiO2-3)) was tested in a batch slurry reactor towards liquid-phase bisphenol A (BPA, c0(BPA) = 10 mg/L, ccat. = 125 mg/L) degradation. Photo-electrochemical and photo-luminescence measurements revealed that with the increasing amount of exposed anatase (001) facets, the catalysts generate more electron-hole pairs and OH∙ radicals that participate in the photocatalytic mineralization of pollutants dissolved in water. In the initial stages of BPA degradation, a correlation between % exposure of (001) facets and catalytic activity was developed, which was in good agreement with the findings of the photo-electrochemical and photo-luminescence measurements. TiO2-1 and TiO2-3 solids achieved 100% BPA removal after 80 min in comparison to the TiO2-2 sample. Adsorption of BPA degradation products onto the TiO2-2 catalyst surface was found to have a detrimental effect on the photocatalytic performance in the last stage of the reaction course. Consequently, the global extent of BPA mineralization decreased with the increasing exposure of anatase (001) facets. The major contribution to the enhanced reactivity of TiO2 anatase (001) surface is the Brønsted acidity resulting from dissociative chemisorption of water on a surface as indicated by FTIR, TPD, and MAS NMR analyses.
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23
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Behera A, Mansingh S, Das KK, Parida K. Synergistic ZnFe2O4-carbon allotropes nanocomposite photocatalyst for norfloxacin degradation and Cr (VI) reduction. J Colloid Interface Sci 2019; 544:96-111. [DOI: 10.1016/j.jcis.2019.02.056] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 02/11/2019] [Accepted: 02/17/2019] [Indexed: 11/17/2022]
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24
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Dong S, Xu J, Jia T, Xu M, Zhong C, Yang G, Li J, Yang D, He F, Gai S, Yang P, Lin J. Upconversion-mediated ZnFe 2O 4 nanoplatform for NIR-enhanced chemodynamic and photodynamic therapy. Chem Sci 2019; 10:4259-4271. [PMID: 31057754 PMCID: PMC6471739 DOI: 10.1039/c9sc00387h] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 03/05/2019] [Indexed: 12/16/2022] Open
Abstract
ZnFe2O4, a semiconductor catalyst with high photocatalytic activity, is ultrasensitive to ultraviolet (UV) light and tumor H2O2 for producing reactive oxygen species (ROS). Thereby, ZnFe2O4 can be used for photodynamic therapy (PDT) from direct electron transfer and the newly defined chemodynamic therapy (CDT) from the Fenton reaction. However, UV light has confined applicability because of its high phototoxicity, low penetration, and speedy attenuation in the biotissue. Herein, an upconversion-mediated nanoplatform with a mesoporous ZnFe2O4 shell was developed for near-infrared (NIR) light enhanced CDT and PDT. The nanoplatform (denoted as Y-UCSZ) was comprised of upconversion nanoparticles (UCNPs), silica shell, and mesoporous ZnFe2O4 shell and was synthesized through a facile hydrothermal method. The UCNPs can efficiently transfer penetrable NIR photons to UV light, which can activate ZnFe2O4 for producing singlet oxygen thus promoting the Fenton reaction for ROS generation. Besides, Y-UCSZ possesses enormous internal space, which is highly beneficial for housing DOX (doxorubicin, a chemotherapeutic agent) to realize chemotherapy. Moreover, the T 2-weighted magnetic resonance imaging (MRI) effect from Fe3+ and Gd3+ ions in combination with the inherent upconversion luminescence (UCL) imaging and computed tomography (CT) from the UCNPs makes an all-in-one diagnosis and treatment system. Importantly, in vitro and in vivo assays authenticated excellent biocompatibility of the PEGylated Y-UCSZ (PEG/Y-UCSZ) and high anticancer effectiveness of the DOX loaded PEG/Y-UCSZ (PEG/Y-UCSZ&DOX), indicating its potential application in the cancer treatment field.
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Affiliation(s)
- Shuming Dong
- Key Laboratory of Superlight Materials and Surface Technology , Ministry of Education , College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , 150001 , P. R. China . ;
| | - Jiating Xu
- Key Laboratory of Superlight Materials and Surface Technology , Ministry of Education , College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , 150001 , P. R. China . ;
| | - Tao Jia
- Key Laboratory of Superlight Materials and Surface Technology , Ministry of Education , College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , 150001 , P. R. China . ;
| | - Mengshu Xu
- Key Laboratory of Superlight Materials and Surface Technology , Ministry of Education , College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , 150001 , P. R. China . ;
| | - Chongna Zhong
- Key Laboratory of Superlight Materials and Surface Technology , Ministry of Education , College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , 150001 , P. R. China . ;
| | - Guixin Yang
- Key Laboratory of Superlight Materials and Surface Technology , Ministry of Education , College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , 150001 , P. R. China . ;
| | - Jiarong Li
- Key Laboratory of Superlight Materials and Surface Technology , Ministry of Education , College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , 150001 , P. R. China . ;
| | - Dan Yang
- Key Laboratory of Superlight Materials and Surface Technology , Ministry of Education , College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , 150001 , P. R. China . ;
| | - Fei He
- Key Laboratory of Superlight Materials and Surface Technology , Ministry of Education , College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , 150001 , P. R. China . ;
| | - Shili Gai
- Key Laboratory of Superlight Materials and Surface Technology , Ministry of Education , College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , 150001 , P. R. China . ;
| | - Piaoping Yang
- Key Laboratory of Superlight Materials and Surface Technology , Ministry of Education , College of Materials Science and Chemical Engineering , Harbin Engineering University , Harbin , 150001 , P. R. China . ;
| | - Jun Lin
- State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun 130021 , P. R. China .
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25
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Photocatalytic degradation of acetaminophen over Ag, Au and Pt loaded TiO2 using solar light. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.01.032] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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26
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Chen Z, Gao Y, Mu D, Shi H, Lou D, Liu SY. Recyclable magnetic NiFe2O4/C yolk–shell nanospheres with excellent visible-light-Fenton degradation performance of tetracycline hydrochloride. Dalton Trans 2019; 48:3038-3044. [DOI: 10.1039/c9dt00396g] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A NiFe2O4/C yolk–shell nanostructure was prepared via one-step calcination using polyacrylic acid sodium salt (PAAS) NPs as a template, which exhibited a highly efficient visible-light photocatalytic performance for the removal of TC in the presence of H2O2.
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Affiliation(s)
- Zhe Chen
- School of Material Science and Technology
- Jilin Institute of Chemical Technology
- Jilin 132022
- PR China
| | - Yuting Gao
- School of Material Science and Technology
- Jilin Institute of Chemical Technology
- Jilin 132022
- PR China
| | - Dongzhao Mu
- School of Material Science and Technology
- Jilin Institute of Chemical Technology
- Jilin 132022
- PR China
| | - Hongfei Shi
- School of Material Science and Technology
- Jilin Institute of Chemical Technology
- Jilin 132022
- PR China
| | - Dawei Lou
- School of Material Science and Technology
- Jilin Institute of Chemical Technology
- Jilin 132022
- PR China
| | - Shu-yuan Liu
- Department of Pharmacology
- Shenyang Medical College
- Shenyang
- PR China
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27
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Nguyen TB, Huang CP, Doong RA. Photocatalytic degradation of bisphenol A over a ZnFe 2O 4/TiO 2 nanocomposite under visible light. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 646:745-756. [PMID: 30064101 DOI: 10.1016/j.scitotenv.2018.07.352] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/20/2018] [Accepted: 07/24/2018] [Indexed: 06/08/2023]
Abstract
A ZnFe2O4-TiO2 nanocomposite combining p-type ZnFe2O4 and n-type TiO2 was successfully fabricated. The ZnFe2O4-TiO2 nanocomposite greatly enhanced the bisphenol A (BPA) photodegradation under visible light irradiation at 465 ± 40 nm. Loading TiO2 with 1 wt% of ZnFe2O4 produced high photocurrent and low charge transfer resistance. The photodegradation rate of BPA by ZnFe2O4-TiO2, which was highly dependent on the water chemistry including pH, anions, and humic acid, was 20.8-21.4 times higher than that of commercial TiO2 photocatalysts. Chloride and sulfate ions enhanced BPA photodegradation mostly due to the production of more radical species; whereas nitrate, dihydrogen phosphate, and bicarbonate ions decreased the photodegradation rate of BPA due to the scavenge of hydroxyl radicals. The photoactivity and recyclability of ZnFe2O4-TiO2 in lake water was also assessed. A near complete BPA removal from lake water was observed under visible light irradiation. Furthermore, >90% of photocatalytic activity toward BPA degradation was achieved in 5 cycles of continuous addition of BPA to the lake water. The BPA degradation intermediates were identified by HPLC/MS/MS and possible reaction pathways were proposed. Results clearly demonstrate the excellent visible-light-sensitive photocatalytic degradation of BPA over ZnFe2O4-TiO2 composite which has a great application potential for the decomposition of emerging contaminants in impaired waters.
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Affiliation(s)
- Thanh Binh Nguyen
- 101, Sec. 2, Kuang Fu Road, Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - C P Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark 19716, DE, USA.
| | - Ruey-An Doong
- 101, Sec. 2, Kuang Fu Road, Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan; 1001, University Road, Institute of Environmental Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan.
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