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Campos-Delgado J, Mendoza ME. Ternary Graphene Oxide and Titania Nanoparticles-Based Nanocomposites for Dye Photocatalytic Degradation: A Review. MATERIALS (BASEL, SWITZERLAND) 2023; 17:135. [PMID: 38203988 PMCID: PMC10780078 DOI: 10.3390/ma17010135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/20/2023] [Accepted: 12/23/2023] [Indexed: 01/12/2024]
Abstract
Advanced oxidation processes stand as green alternatives for the decontamination of waste waters. Photocatalysis is an advanced oxidation process in which a semiconductor material absorbs photon energy and triggers redox reactions capable of degrading organic pollutants. Titanium dioxide (TiO2, titania) represents one of the most popular choices of photocatalytic materials, however the UV-activation of its anatase phase and its high charge recombination rate decrease its photocatalytic activity and weaken its potential. Graphene oxide is a 2D carbon nanomaterial consisting of exfoliated sheets of hexagonally arranged carbons decorated with oxygen- and hydrogen- functional groups. Composite nanomaterials consisting of titania nanoparticles and graphene oxide have proven to enhance the photocatalytic activity of pure TiO2. In this review, we present a thorough literature review of ternary nanocomposites based on synthesized or commercial titania nanoparticles and GO (or reduced GO) particularly used for the photodegradation of dyes. GO/TiO2 has been enriched primarily with metals, semiconductors and magnetic nanomaterials, proving a superior dye degradation performance and reusability compared to bare TiO2. Ongoing challenges and perspectives are outlined.
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Affiliation(s)
- Jessica Campos-Delgado
- Instituto de Física, Benemérita Universidad Autónoma de Puebla, Av. San Claudio esq. 18 Sur, Puebla 72570, Mexico;
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Vanlalhmingmawia C, Tiwari D. Novel cubical Ag(NP) decorated titanium dioxide supported bentonite thin film in the efficient removal of bisphenol A using visible light. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:32942-32956. [PMID: 36472744 DOI: 10.1007/s11356-022-24467-7] [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: 07/11/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
The persistent endocrine-disrupting chemical bisphenol A is posing serious health concerns; hence, it is known to be an emerging and potential water contaminant. The present investigation aims to synthesize novel cubical Ag(NP) decorated titanium dioxide-supported bentonite (Ag/TiO2@Clay) nanocomposite using a novel synthetic process. The nanocomposite materials were characterized by several analytical methods viz., transmission electron microscopy (TEM), X-ray diffraction (XRD) analyses, energy-dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) and diffuse reflectance spectroscopy (DRS). Further, the photocatalytic removal of bisphenol A was conducted utilizing the thin film catalyst under the LED (light emitting diode; visible light) and UV-A (ultra violet-A) light sources. The parametric studies solution pH (6.0-12.0), pollutant concentrations (1.0-20.0 mg/L), and the interaction of several scavengers and co-existing ions are studied extensively to demonstrate the insights of the removal mechanism. The mineralization of bisphenol A and repeated use of the thin film catalyst showed the potential usage of photocatalysts in the devised large-scale operations. Similarly, the natural matrix treatment was performed to evaluate the suitability of the process for real implications.
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Affiliation(s)
| | - Diwakar Tiwari
- Department of Chemistry, School of Physical Sciences, Mizoram University, Aizawl-796004, India.
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Vanlalhmingmawia C, Tiwari D, Kim DJ. Novel nanocomposite thin film in the efficient removal of antibiotics using visible light: Insights of photocatalytic reactions and stability of thin film in real water implications. ENVIRONMENTAL RESEARCH 2023; 218:115007. [PMID: 36493806 DOI: 10.1016/j.envres.2022.115007] [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: 09/29/2022] [Revised: 11/28/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
Novel clay (bentonite) supported Ag0 nanoparticles (NPs) doped TiO2 nanocomposite (Clay/TiO2/Ag0(NPs)) thin film was obtained by using template synthesis method. The nanocomposite material is decorated with cubical Ag0(NPs) and utilised successfully in the photocatalytic degradation of tetracycline (TC) and sulfamethazine (SMZ) from aqueous solutions utilizing visible light and UV-A radiations. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS) analyses were used to characterise the nanocomposite materials. Diffusion reflectance spectroscopy (DRS) was utilised to determine the bandgap energies of the materials and also to confirm that Ag0(NPs) was successfully doped with TiO2. The nanocomposite material showed highly efficient photocatalytic activity for the breaking down of TC/SMZ under visible light irradiation by the enhanced electron-hole separation and adsorption of antibiotics at the vicinity of the catalyst. The oxidative degradation of TC/SMZ were shown to be highly dependent on the pH, initial concentration of TC/SMZ, and various co-existing ions. Reusability test of Clay/Ag0(NPs)/TiO2 nanocomposite revealed that the activity did not decline with repeated use. Treatment of TC and SMZ in real water system further enhanced the application potential of the novel catalysts for the treatment of full-scale wastewater polluted with these antibiotics.
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Affiliation(s)
| | - Diwakar Tiwari
- Department of Chemistry, School of Physical Sciences, Mizoram University, Aizawl-796004, India.
| | - Dong-Jin Kim
- Department of Environmental Sciences and Biotechnology & Institute of Energy and Environment, Hallym University, Chuncheon 24252, Republic of Korea.
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Synthesis and enhanced photocatalytic application of porous nanocomposites of (r)GO/TiO 2 embedded HCP (hyper crosslinked polymer). PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES : OFFICIAL JOURNAL OF THE EUROPEAN PHOTOCHEMISTRY ASSOCIATION AND THE EUROPEAN SOCIETY FOR PHOTOBIOLOGY 2022; 22:837-855. [PMID: 36586076 DOI: 10.1007/s43630-022-00356-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 12/21/2022] [Indexed: 01/01/2023]
Abstract
Nanocomposites (r)GO/TiO2/hyper crosslinked polymer (HCP) were prepared using ultrasonic-assisted method, and identified by (SEM), (EDS), (TEM), and (XRD) techniques. This study was performed to examine the effect of various operating parameters on photocatalytic degradation of Rhodamine B (Rh.B) over (r)GO/TiO2 embedded HCP followed by an optimization study using response surface methodology (RSM) based on Box-Behnken design (BBD). The photocatalytic activity of rGO/TiO2/polycalix[4]resorcinarene ((r)GTP) was evaluated using the cationic dye Rhodamine B as a pollutant model under solar light (intensity = 850 W/m2) between 10 and 12 am, June, Ahvaz, Iran. Response Surface Methodology was adopted for the optimization of degradation parameters viz pH, dye concentration, and nanocomposites dosage and contact time. The optimum values for the maximum Rhodamine B (Rh B) degradation of rGO/TiO2/polycalix (rGTP) and GTP were obtained, in which the degradation of rGTP was 100% and the degradation efficiency of GO/TiO2/polycalix (GTP) was 70%. ANOVA analysis results demonstrated that irradiation time and nanocomposite mass were the most significant parameters. It was found that rGO/TiO2/polycalix[4]resorcinarene (rGTP) nanocomposite displayed the best degradation yield for the dye. The results showed that the rGTP nanocomposite displayed good EIS and CV properties besides being eco-friendly and reusable. It could also show a high capacity for the elimination of the dye in the industrial wastewaters.
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Jiang D, Song X, Zhang H, Yuan M. Removal of Organic Pollutants with Polylactic Acid-Based Nanofiber Composites. Polymers (Basel) 2022; 14:4622. [PMID: 36365614 PMCID: PMC9654922 DOI: 10.3390/polym14214622] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/14/2022] [Accepted: 10/24/2022] [Indexed: 10/28/2023] Open
Abstract
In the process of using nano-titanium dioxide (TiO2) photocatalytic treatment of organic polluted liquid, the easy aggregation and recycling difficulty of nano-TiO2 particles are important problems that cannot be avoided. Anchoring nano-TiO2 to the substrate not only limits the aggregation of nano-TiO2, but also facilitates the easy removal and reuse of nano-TiO2 after processing. Herein, coaxial electrospun nanofibrous (NFs) made of L-polylactic acid (PLLA) and chitosan (CS) are coated with graphene oxide (GO) and TiO2 for the enhanced oxidation of organic pollutants. The adsorption and photocatalysis experiment results show that, for methyl orange (MO) dye solution, the saturated removal of MO by PLLA/CS, PLLA/CS-GO and PLLA/CS-GO/TiO2 nanofibers are 60.09 mg/g, 78.25 mg/g and 153.22 mg/g, respectively; for the Congo red (CR) dye solution, the saturated removal of CR by PLLA/CS, PLLA/CS-GO and PLLA/CS-GO/TiO2 nanofiber materials were 138.01 mg/g, 150.22 mg/g and 795.44 mg/g, respectively. These three composite nanofiber membrane materials can maintain more than 80% of their adsorption capacity after four repeated cycles. They are environmentally friendly and efficient organic pollution remediation materials with promising application.
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Affiliation(s)
| | | | | | - Mingwei Yuan
- Green Preparation Technology of Biobased Materials National &Local Joint Engineering Research Center, Yunnan Minzu University, Kunming 650500, China
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Sayed M, Shi Z, Gholami F, Fatehi P, Soliman AIA. Ag@TiO 2 Nanocomposite as an Efficient Catalyst for Knoevenagel Condensation. ACS OMEGA 2022; 7:32393-32400. [PMID: 36120061 PMCID: PMC9476541 DOI: 10.1021/acsomega.2c03852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
In the present study, a new series of different heterocycles was synthesized through base-free Knoevenagel condensation of various aldehydes and active methylene-containing compounds using the hydrothermal developed Ag@TiO2 as a heterogeneous catalyst. The catalyst was synthesized by mixing TiO2 (P25) with AgNO3 and hydrothermally treated in ethanol at 180 °C for 12 h. The developed Ag@TiO2 catalyst was directly applied for Knoevenagel condensation, and the optimized procedure involved stirring the aldehydes and active methylene-containing compounds with Ag@TiO2 in ethanol at 65 °C. The reaction scope was investigated for various aromatic and heterocyclic aldehydes with active methylene-containing compounds, and the isolated yields were significantly high. The reusability of the catalyst was investigated for up to five cycles, where an insignificant decrease in the catalyst's reactivity was observed. Also, the reaction could proceed in water as a solvent, and the isolated yield was 40%. Hence, this protocol features mild reaction conditions, a facile procedure, and clean reaction profiles.
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Affiliation(s)
- Mostafa Sayed
- Department
of Chemistry, University of Science and
Technology of China, Hefei 230026, China
- Chemistry
Department, Faculty of Science, New Valley
University, El-Kharja 72511, Egypt
| | - Zhipeng Shi
- Department
of Chemistry, University of Science and
Technology of China, Hefei 230026, China
| | - Farzad Gholami
- Chemical
Engineering Department, Lakehead University, Thunder Bay, ON P7B5E1, Canada
| | - Pedram Fatehi
- Chemical
Engineering Department, Lakehead University, Thunder Bay, ON P7B5E1, Canada
| | - Ahmed I. A. Soliman
- Chemical
Engineering Department, Lakehead University, Thunder Bay, ON P7B5E1, Canada
- Chemistry
Department, Faculty of Science, Assiut University, Assiut 71516, Egypt
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Baruah MJ, Bora TJ, Gogoi G, Hoque N, Gour NK, Bhargava SK, Guha AK, Nath JK, Das B, Bania KK. Chirally modified cobalt-vanadate grafted on battery waste derived layered reduced graphene oxide for enantioselective photooxidation of 2-naphthol: Asymmetric induction through non-covalent interaction. J Colloid Interface Sci 2022; 608:1526-1542. [PMID: 34742071 DOI: 10.1016/j.jcis.2021.10.091] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/12/2021] [Accepted: 10/16/2021] [Indexed: 12/26/2022]
Abstract
The cobalt oxide-vanadium oxide (Co3O4-V2O5) combined with reduced graphene oxide (rGO) having band gap of ∼ 3.3 eV appeared as a suitable photocatalyst for selective oxidation of 2-naphthol to BINOL. C2-symmetric BINOL was achieved with good yield using hydrogen peroxide as the oxidant under UV-light irradiation. The same catalyst was chirally modified with cinchonidine and a newly synthesized chiral Schiff base ligand having a sigma-hole center. The strong interaction of the chiral modifiers with the cobalt-vanadium oxide was truly evident from various spectroscopic studies and DFT calculations. The chirally modified mixed metal oxide transformed the oxidative CC coupling reaction with high enantioselectivity. High enantiomeric excess upto 92 % of R-BINOL was obtained in acetonitrile solvent and hydrogen peroxide as the oxidant. A significant achievement was the formation of S-BINOL in the case of the cinchonidine modified catalyst and R-BINOL with the Schiff base ligand anchored chiral catalyst. The UV-light induced catalytic reaction was found to involve hydroxyl radical as the active reactive species. The spin trapping ESR and fluorescence experiment provided relevant evidence for the formation of such species through photodecomposition of hydrogen peroxide on the catalyst surface. The chiral induction to the resultant product was found to induce through supramolecular interaction like OH…π, H…Br interaction. The presence of sigma hole center was believed to play significant role in naphtholate ion recognition during the catalytic cycle.
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Affiliation(s)
- Manash J Baruah
- Department of Chemical Sciences, Tezpur University, Assam 784028, India
| | - Tonmoy J Bora
- Department of Chemical Sciences, Tezpur University, Assam 784028, India
| | - Gautam Gogoi
- Department of Chemical Sciences, Tezpur University, Assam 784028, India
| | - Nazimul Hoque
- Department of Chemical Sciences, Tezpur University, Assam 784028, India
| | - Nand K Gour
- Department of Chemical Sciences, Tezpur University, Assam 784028, India
| | - Suresh K Bhargava
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, GPO Box 2476, Melbourne 3001, Australia
| | - Ankur K Guha
- Cotton University, Panbazar, Guwahati, Assam 781001, India
| | - Jayanta K Nath
- Department of Chemistry, S. B. Deorah College, Bora Service, Ulubari, Guwahati 781007, Assam, India
| | - Biraj Das
- Department of Chemistry, Dakha Devi Rasiwasia College, Dibrugarh, Assam 786184, India
| | - Kusum K Bania
- Department of Chemical Sciences, Tezpur University, Assam 784028, India.
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Titanium Dioxide-Based Photocatalysts for Degradation of Emerging Contaminants including Pharmaceutical Pollutants. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11188674] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Contamination of the environment has been a growing problem in recent years. Due to the rapid growth in human population, the expansion of cities, along with the development of industry, more and more dangerous chemicals end up in the environment, especially in soil and water. For the most part, it is not possible to effectively remove chemicals through traditional remediation techniques, because those used in treatment plants are not specifically designed for this purpose. Therefore, new approaches for water remediation are in great demand. Many efforts have been focused on applications of photocatalysis for the remediation of chemical pollutants including drugs. Titanium(IV) oxide nanoparticles have particularly been considered as potential photocatalysts due to their favorable properties. In this article, we present the problem of emerging contaminants including drugs and discuss the use of photocatalysts based on titanium(IV) oxide nanoparticles for their degradation. A wide selection of materials, starting from bare TiO2, via its hybrid and composite materials, are discussed including those based on carbonaceous materials or connections with macrocyclic structures. Examples of photodegradation experiments on TiO2-based materials including those performed with various active pharmaceutical ingredients are also included.
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Fu H, Gray KA. TiO 2 (Core)/Crumpled Graphene Oxide (Shell) Nanocomposites Show Enhanced Photodegradation of Carbamazepine. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2087. [PMID: 34443917 PMCID: PMC8401461 DOI: 10.3390/nano11082087] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/10/2021] [Accepted: 08/12/2021] [Indexed: 11/16/2022]
Abstract
The presence of pharmaceuticals and personal care products (PPCPs) in aquatic systems is a serious threat to human and ecological health. The photocatalytic degradation of PPCPs via titanium oxide (TiO2) is a well-researched potential solution, but its efficacy is limited by a variety of environmental conditions, such as the presence of natural organic macromolecules (NOM). In this study, we investigate the synthesis and performance of a novel photoreactive composite: a three-dimensional (3D) core (TiO2)-shell (crumpled graphene oxide) composite (TiGC) used as a powerful tool for PPCP removal and degradation in complex aqueous environments. TiGC exhibited a high adsorption capacity (maximum capacity 11.2 mg/g, 100 times larger than bare TiO2) and a 30% enhancement of photodegradation (compared to bare TiO2) in experiments with a persistent PPCP model, carbamazepine (CBZ). Furthermore, the TiGC performance was tested under various conditions of NOM concentration, light intensity, CBZ initial concentration, and multiple cycles of CBZ addition, in order to illustrate that TiGC performance is stable over a range of field conditions (including NOM). The enhanced and stable performance of TiCG to adsorb and degrade CBZ in water extends from its core-shell composite nanostructure: the crumpled graphene oxide shell provides an adsorptive surface that favors CBZ sorption over NOM, and optical and electronic interactions between TiO2 and graphene oxide result in higher hydroxyl radical (•OH) yields than bare TiO2.
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Affiliation(s)
| | - Kimberly A. Gray
- Department of Civil and Environmental Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA;
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Nwahara N, Adeniyi O, Mashazi P, Nyokong T. Visible light responsive TiO2 - graphene oxide nanosheets - Zn phthalocyanine ternary heterojunction assisted photoelectrocatalytic degradation of Orange G. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113291] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Qian S, Pu S, Zhang Y, Wang P, Bai Y, Lai B. New insights on the enhanced non-hydroxyl radical contribution under copper promoted TiO 2/GO for the photodegradation of tetracycline hydrochloride. J Environ Sci (China) 2021; 100:99-109. [PMID: 33279058 DOI: 10.1016/j.jes.2020.06.039] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/26/2020] [Accepted: 06/29/2020] [Indexed: 06/12/2023]
Abstract
TiO2/graphene oxide (GO) as photocatalyst in the photo-degradation of multitudinous pollutants has been extensively studied. But its low photocatalytic efficiency is attributed to the high band gap energy which lead to low light utilization. Cu-TiO2/GO was synthesized via the impregnation methods to enhance the catalytic performance. The Cu-TiO2/GO reaction rate constant for photo-degradation of pollutants (tetracycline hydrochloride, TC) was about 1.4 times that of TiO2/GO. In 90 min, the removal ratio of Cu-TiO2/GO for TC was 98%, and the maximum degradation ratio occurred at pH 5. After five cycles, the removal ratio of Cu-TiO2/GO still exceeded 98%. UV-visible adsorption spectra of Cu-TiO2/GO showed that its band gap was narrower than TiO2/GO. Electron paramagnetic resonance (EPR) spectra test illustrated the generation rate of •O2- and •OH was higher in Cu-TiO2/GO system than TiO2/GO and TiO2 system. The contribution sequence of oxidative species was •O2- > holes (h+) > •OH in both TiO2/GO and Cu-TiO2/GO system. Interestingly, the contribution of •OH in Cu-TiO2/GO was less than that in TiO2/GO during the photo-degradation process. This phenomenon was attributed to the better adsorption performance of Cu-TiO2/GO which could reduce the accessibility of TC to •OH in liquid. The enhanced non‑hydroxyl radical contribution could be attributed to that the more other active species or sites on (nearby) the surface of Cu-TiO2/GO generated after doping Cu. These results provide a new perspective for the tradition metal-doped conventional catalysts to enhance the removal of organic pollutants in the environment.
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Affiliation(s)
- Sijia Qian
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
| | - Shengyan Pu
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Ying Zhang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
| | - Peng Wang
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
| | - Yingchen Bai
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Bo Lai
- State Key Laboratory of Hydraulics and Mountain River Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, China
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A solar light regenerated adsorbent by implanting CdS into an active covalent triazine framework to decontaminate tetracycline. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Nawaz M, Khan AA, Hussain A, Jang J, Jung HY, Lee DS. Reduced graphene oxide-TiO 2/sodium alginate 3-dimensional structure aerogel for enhanced photocatalytic degradation of ibuprofen and sulfamethoxazole. CHEMOSPHERE 2020; 261:127702. [PMID: 32750619 DOI: 10.1016/j.chemosphere.2020.127702] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 06/19/2020] [Accepted: 07/11/2020] [Indexed: 06/11/2023]
Abstract
In this study, graphene oxide and titanium dioxide in combination with sodium alginate were used to synthesize the reduced graphene oxide-TiO2/sodium alginate (RGOT/SA) aerogel. The potential of RGOT/SA aerogel was evaluated for the photocatalytic degradation of ibuprofen and sulfamethoxazole and was compared with that of bare titanium dioxide nanoparticles. More than 99% removal of both the contaminants was obtained within 45-90 min by using the RGOT/SA aerogel under UV-A light. Mineralization of both the pollutants was also higher in case of RGOT/SA aerogel as compared to bare TiO2 nanoparticles. The optimal mass ratio of TiO2 nanoparticles with respect to graphene oxide was 2:1 in RGOT/SA aerogel in the presence of 1 wt% sodium alginate solution. High photodegradation of Ibuprofen was observed at neutral pH and acidic to neutral pH was found suitable for the photodegradation of sulfamethoxazole. Three-dimensional interconnected macroporous assembly, large surface area for settling TiO2 nanoparticles, efficient charge partitioning, and enhanced physical and chemical adsorption of ibuprofen and sulfamethoxazole on the surface of RGOT/SA aerogel were the significant characteristics of RGOT/SA aerogels. Moreover, ease of separation and recyclability of the RGOT/SA aerogel could further save the extra energy used to separate nanoparticles from the effluent.
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Affiliation(s)
- Mohsin Nawaz
- Department of Agricultural Engineering, Muhammad Nawaz Shareef University of Agriculture, Old Shujabad Road, Multan 60000, Pakistan
| | - Alamgir A Khan
- Department of Agricultural Engineering, Muhammad Nawaz Shareef University of Agriculture, Old Shujabad Road, Multan 60000, Pakistan
| | - Abid Hussain
- Department of Soil and Environmental Sciences, Muhammad Nawaz Shareef University of Agriculture, Old Shujabad Road, Multan 60000, Pakistan
| | - Jiseon Jang
- R&D Institute of Radioactive Wastes, Korea Radioactive Waste Agency, 174 Gajeong-ro, Yuseong-gu, Daejeon 34129, Republic of Korea
| | - Hee-Young Jung
- School of Applied Biosciences, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Dae Sung Lee
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
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Mandal S, Mallapur S, Reddy M, Singh JK, Lee DE, Park T. An Overview on Graphene-Metal Oxide Semiconductor Nanocomposite: A Promising Platform for Visible Light Photocatalytic Activity for the Treatment of Various Pollutants in Aqueous Medium. Molecules 2020; 25:molecules25225380. [PMID: 33213017 PMCID: PMC7698509 DOI: 10.3390/molecules25225380] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 11/16/2022] Open
Abstract
Graphene is one of the most favorite materials for materials science research owing to its distinctive chemical and physical properties, such as superior conductivity, extremely larger specific surface area, and good mechanical/chemical stability with the flexible monolayer structure. Graphene is considered as a supreme matrix and electron arbitrator of semiconductor nanoparticles for environmental pollution remediation. The present review looks at the recent progress on the graphene-based metal oxide and ternary composites for photocatalysis application, especially for the application of the environmental remediation. The challenges and perspectives of emerging graphene-based metal oxide nanocomposites for photocatalysis are also discussed.
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Affiliation(s)
- Soumen Mandal
- Intelligent Construction Automation Center, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Korea;
| | - Srinivas Mallapur
- Department of Chemistry, REVA University, Kattigenahalli, Yelahanka, Bangalore 560024, Karnataka, India; (S.M.); (M.R.)
| | - Madhusudana Reddy
- Department of Chemistry, REVA University, Kattigenahalli, Yelahanka, Bangalore 560024, Karnataka, India; (S.M.); (M.R.)
| | - Jitendra Kumar Singh
- Innovative Durable Building and Infrastructure Research Center, Department of Architectural Engineering, Hanyang University, 1271 Sa3-dong, Sangnok-gu, Ansan 15588, Korea;
| | - Dong-Eun Lee
- School of Architecture, Civil, Environment, and Energy, Kyungpook National University, 1370, Sangyegk-Dong, Buk-Gu, Daegu 702701, Korea
- Correspondence: (D.-E.L.); (T.P.); Tel.: +82-3140-05291 (T.P.)
| | - Taejoon Park
- Department of Robotics Engineering, Hanyang University, 55 Hanyangdaehak-ro, Ansan, Gyeonggi-do 15588, Korea
- Correspondence: (D.-E.L.); (T.P.); Tel.: +82-3140-05291 (T.P.)
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Castilhos S, de Souza FM, Colpini LMS, de Mattos Jorge LM, Dos Santos OAA. Assessment comparison of commercial TiO 2 and TiO 2 sol-gel on the degradation of caffeine using artificial radiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:22155-22168. [PMID: 31993911 DOI: 10.1007/s11356-020-07748-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 01/14/2020] [Indexed: 06/10/2023]
Abstract
The presence of endocrine disrupting compounds in water receptor bodies, such as drugs, currently has in scientific field a great focus of studies focused on advanced water treatment techniques that enable the decontamination of water sources and public supply. In this context, this study focused on the characterization and evaluation of photocatalytic activity of catalysts calcined and uncalcined synthesized TiO2 and the commercial sol-gel route from caffeine degradation. The photocatalysts were characterized by N2 physisorption, X-ray diffraction, scanning electron microscopy (SEM/EDS), photoacoustic spectroscopy, and infrared spectroscopy (FTIR). They seek to evaluate the main textural, structural, chemical, and morphological differences that the method of synthesis can promote in obtaining a titanium oxide-based catalyst. Thus, the results of this study demonstrate that the synthesis method significantly influences the activity of the materials and that calcined TiO2 catalyst prepared using the sol-gel method has promising photocatalytic capabilities for the elimination of drugs such as caffeine when present in wastewater.
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Affiliation(s)
- Stefani Castilhos
- Department of Chemical Engineering, State University of Maringá, Av. Colombo 5790, Maringá, Paraná, Brazil
| | - Fernando Manzotti de Souza
- Department of Chemical Engineering, State University of Maringá, Av. Colombo 5790, Maringá, Paraná, Brazil.
| | | | - Luiz Mario de Mattos Jorge
- Department of Chemical Engineering, State University of Maringá, Av. Colombo 5790, Maringá, Paraná, Brazil
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17
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Luo J, Wang Z, Jiang H, Liu S, Xiong FQ, Ma J. Localized Building Titania-Graphene Charge Transfer Interfaces for Enhanced Photocatalytic Performance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4637-4644. [PMID: 32259452 DOI: 10.1021/acs.langmuir.0c00297] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Achieving high photocatalytic activity of titania-graphene composites calls for well-controlled titania size and efficient charge transfer interfaces. However, it is rather difficult because of easy restacking of graphene sheets and random nucleation and growth of titania nanoparticles in solution. Here, we reported a facile way to control the TiO2 sizes and interfaces by localizing the nucleation and growth of titania on graphene sheets, which prohibits both restacking of graphene and random growth of TiO2. As a result, a composite with controllably less than 10-nm-sized TiO2 nanoparticles evenly distributed on thin graphene sheets was achieved. Thanks to the small size of titania and efficient charge transfer interfaces, the TiO2/graphene composite exhibits a significant enhancement of photocatalytic H2 evolution activity, reaching 1.35 mmol g-1 h-1. Furthermore, the composite also shows high photocatalytic activity on dye degradation under visible light illumination.
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Affiliation(s)
- Jianqiang Luo
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, Jiangxi, China
- Jiangxi Province Key Laboratory of Polymer Micro/Nano Manufacturing and Devices, Nanchang, 330013, Jiangxi, China
| | - Zhijian Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
| | - Hongxia Jiang
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, Jiangxi, China
| | - Shujuan Liu
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, Jiangxi, China
| | - Feng-Qiang Xiong
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, Jiangxi, China
| | - Jianguo Ma
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, 330013, Jiangxi, China
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18
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Pedrosa M, Da Silva ES, Pastrana-Martínez LM, Drazic G, Falaras P, Faria JL, Figueiredo JL, Silva AMT. Hummers' and Brodie's graphene oxides as photocatalysts for phenol degradation. J Colloid Interface Sci 2020; 567:243-255. [PMID: 32062085 DOI: 10.1016/j.jcis.2020.01.093] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/22/2020] [Accepted: 01/24/2020] [Indexed: 12/11/2022]
Abstract
Undoped metal-free graphene oxide (GO) materials prepared by either a modified Hummers' (GO-H) or a Brodie's (GO-B) method were tested as photocatalysts in aqueous solution for the oxidative conversion of phenol. In the dark, the adsorptive capacity of GO-B towards phenol (~35%) was higher than that of GO-H (~15%). Upon near-UV/Vis irradiation, GO-H was able to remove 21% of phenol after 180 min, mostly through adsorption. On the other hand, by using less energetic visible irradiation, GO-B removed as much as 95% in just 90 min. By thorough characterization of the prepared materials (SEM, HRTEM, TGA, TPD, Raman, XRD, XPS and photoluminescence) the observed performances could be explained in terms of their different surface chemistries. The GO-B presents the lower concentration of oxygen functional groups (in particular carbonyl groups as revealed by XPS) and it has a considerably higher photocatalytic activity compared to GO-H. Photoluminescence (PL) of liquid dispersions and XRD analysis of powders showed lower PL intensity and smaller interlayer distance for GO-B relative to GO-H, respectively: this suggests lower electron-hole recombination and enhanced electron transfer in GO-B, in support of its boosted photocatalytic activity. Reusability tests showed no efficiency loss after a second usage cycle and over three runs under visible irradiation, which was in line with the similarity of the XPS spectra of the fresh and used GO-B materials. Moreover, scavenging studies revealed that holes and hydroxyl radicals were the main reactive species in play during the photocatalytic process. The obtained results, establish for the first time, that GO prepared by Brodie's method is an active and stable undoped metal-free photocatalyst for phenol degradation in aqueous solutions, opening new paths for the application of more sustainable and metal-free materials for water treatment solutions.
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Affiliation(s)
- Marta Pedrosa
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Eliana S Da Silva
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Luisa M Pastrana-Martínez
- Carbon Materials Research Group, Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Campus Fuentenueva s/n, 18071 Granada, Spain
| | - Goran Drazic
- Department for Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Polycarpos Falaras
- National Centre for Scientific Research "Demokritos", Institute of Nanoscience and Nanotechnology, 15341, Agia Paraskevi Attikis, Athens, Greece
| | - Joaquim L Faria
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - José L Figueiredo
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Adrián M T Silva
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
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19
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Mestre AS, Carvalho AP. Photocatalytic Degradation of Pharmaceuticals Carbamazepine, Diclofenac, and Sulfamethoxazole by Semiconductor and Carbon Materials: A Review. Molecules 2019; 24:molecules24203702. [PMID: 31618947 PMCID: PMC6832631 DOI: 10.3390/molecules24203702] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 10/07/2019] [Accepted: 10/11/2019] [Indexed: 11/16/2022] Open
Abstract
The presence of pharmaceutical compounds in the environment is a reality that calls for more efficient water treatment technologies. Photocatalysis is a powerful technology available but the high energy costs associated with the use of UV irradiation hinder its large scale implementation. More sustainable and cheaper photocatalytic processes can be achieved by improving the sunlight harvesting and the synthesis of semiconductor/carbon composites has proved to be a promising strategy. Carbamazepine, diclofenac, and sulfamethoxazole were selected as target pharmaceuticals due to their recalcitrant behavior during conventional wastewater treatment and persistence in the environment, as properly reviewed. The literature data on the photocatalytic removal of carbamazepine, diclofenac, and sulfamethoxazole by semiconductor/carbon materials was critically revised to highlight the role of the carbon in the enhanced semiconductor performance under solar irradiation. Generally it was demonstrated that carbon materials induce red-shift absorption and they contribute to more effective charge separation, thus improving the composite photoactivity. Carbon was added as a dopant (C-doping) or as support or doping materials (i.e., nanoporous carbons, carbon nanotubes (CNTs), graphene, and derived materials, carbon quantum dots (CQDs), and biochars) and in the large majority of the cases, TiO2 was the semiconductor tested. The specific role of carbon materials is dependent on their properties but even the more amorphous forms, like nanoporous carbons or biochars, allow to prepare composites with improved properties compared to the bare semiconductor. The self-photocatalytic activity of the carbon materials was also reported and should be further explored. The removal and mineralization rates, as well as degradation pathways and toxicity of the treated solutions were also critically analyzed.
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Affiliation(s)
- Ana S Mestre
- Centro de Química e Bioquímica and Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal.
| | - Ana P Carvalho
- Centro de Química e Bioquímica and Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal.
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20
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Kumar P, Vahidzadeh E, Thakur UK, Kar P, Alam KM, Goswami A, Mahdi N, Cui K, Bernard GM, Michaelis VK, Shankar K. C3N5: A Low Bandgap Semiconductor Containing an Azo-Linked Carbon Nitride Framework for Photocatalytic, Photovoltaic and Adsorbent Applications. J Am Chem Soc 2019; 141:5415-5436. [DOI: 10.1021/jacs.9b00144] [Citation(s) in RCA: 253] [Impact Index Per Article: 50.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Pawan Kumar
- Department of Electrical and Computer Engineering, University of Alberta, 9211 116 Street, Edmonton, Alberta T6G 1H9, Canada
| | - Ehsan Vahidzadeh
- Department of Electrical and Computer Engineering, University of Alberta, 9211 116 Street, Edmonton, Alberta T6G 1H9, Canada
| | - Ujwal K. Thakur
- Department of Electrical and Computer Engineering, University of Alberta, 9211 116 Street, Edmonton, Alberta T6G 1H9, Canada
| | - Piyush Kar
- Department of Electrical and Computer Engineering, University of Alberta, 9211 116 Street, Edmonton, Alberta T6G 1H9, Canada
| | - Kazi M. Alam
- Department of Electrical and Computer Engineering, University of Alberta, 9211 116 Street, Edmonton, Alberta T6G 1H9, Canada
| | - Ankur Goswami
- Department of Electrical and Computer Engineering, University of Alberta, 9211 116 Street, Edmonton, Alberta T6G 1H9, Canada
| | - Najia Mahdi
- Department of Electrical and Computer Engineering, University of Alberta, 9211 116 Street, Edmonton, Alberta T6G 1H9, Canada
| | - Kai Cui
- Nanotechnology
Research Centre, National Research Council of Canada, Edmonton, Alberta T6G 2M9, Canada
| | - Guy M. Bernard
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | | | - Karthik Shankar
- Department of Electrical and Computer Engineering, University of Alberta, 9211 116 Street, Edmonton, Alberta T6G 1H9, Canada
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21
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Chen M, Luo Y, Zhang C, Guo L, Wang Q, Wu Y. Graphene oxide mediated thiolation of indoles in water: a green and sustainable approach to synthesize 3-sulfenylindoles. Org Chem Front 2019. [DOI: 10.1039/c8qo00726h] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Graphene oxide, a green and recyclable catalyst, was developed to synthesize 3-sulfenylindoles in water.
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Affiliation(s)
- Min Chen
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education
- West China School of Pharmacy
- Sichuan University Sichuan 610041
- China
| | - Yi Luo
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education
- West China School of Pharmacy
- Sichuan University Sichuan 610041
- China
| | - Chen Zhang
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education
- West China School of Pharmacy
- Sichuan University Sichuan 610041
- China
| | - Li Guo
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education
- West China School of Pharmacy
- Sichuan University Sichuan 610041
- China
| | - Qiantao Wang
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education
- West China School of Pharmacy
- Sichuan University Sichuan 610041
- China
| | - Yong Wu
- Key Laboratory of Drug Targeting and Drug Delivery System of Ministry of Education
- West China School of Pharmacy
- Sichuan University Sichuan 610041
- China
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22
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Luna R, Solis C, Ortiz N, Galicia A, Sandoval F, Zermeño B, Moctezuma E. Photocatalytic Degradation of Caffeine in a Solar Reactor System. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2018. [DOI: 10.1515/ijcre-2017-0126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
AbstractIn this paper, solar photodegradation of caffeine in aqueous solution was studied, this organic compound is the most consumed stimulant around the world. The degradation experiments were carried outdoors in a solar reactor and Evonik-Degussa P25 TiO2was used as catalyst. The photochemical and photocatalytic effect were tested in aqueous solutions of caffeine. Experimental results indicate that the organic compound is easily degraded over a very short period of time using 0.5 g L-1of catalyst. The kinetic analysis indicates that the initial reaction rate of caffeine is described by the LH-HW model. However, the original compound cannot be mineralized very fast, caffeine is converted to other organic compounds with a longer lifetime before the mineralization, converting caffeine CO2and water.
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23
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Titanium Dioxide/Graphene and Titanium Dioxide/Graphene Oxide Nanocomposites: Synthesis, Characterization and Photocatalytic Applications for Water Decontamination. Catalysts 2018. [DOI: 10.3390/catal8110491] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The use of titanium dioxide, TiO2 as a photocatalyst in water decontamination has witnessed continuous interest due to its efficiency, stability, low toxicity and cost-effectiveness. TiO2 use is limited by its large band gap energy leading to light absorbance in the UV region of the spectrum, and by the relatively fast rate of recombination of photogenerated electrons and positive holes. Both limitations can be mitigated by using carbon-TiO2 nanocomposites, such as those based on graphene (G) and graphene oxide (GO). Relative to bare TiO2, these nanocomposites have improved photocatalytic activity and stability under the UV–visible light, constituting a promising way forward for improved TiO2 photocatalytic performance. This review focuses on the recent developments in the chemistry of TiO2/G and TiO2/GO nanocomposites. It addresses the mechanistic fundamentals, briefly, of TiO2 and TiO2/G and TiO2/GO photocatalysts, the various synthesis strategies for preparing TiO2/G and TiO2/GO nanocomposites, and the different characterization techniques used to study TiO2/G and TiO2/GO nanocomposites. Some applications of the use of TiO2/G and TiO2/GO nanocomposites in water decontamination are included.
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24
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Awfa D, Ateia M, Fujii M, Johnson MS, Yoshimura C. Photodegradation of pharmaceuticals and personal care products in water treatment using carbonaceous-TiO 2 composites: A critical review of recent literature. WATER RESEARCH 2018; 142:26-45. [PMID: 29859390 DOI: 10.1016/j.watres.2018.05.036] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Revised: 05/09/2018] [Accepted: 05/19/2018] [Indexed: 05/14/2023]
Abstract
The high concentrations of pharmaceuticals and personal care products (PPCP) that found in water in many locations are of concern. Among the available water treatment methods, heterogeneous photocatalysis using TiO2 is an emerging and viable technology to overcome the occurrence of PPCP in natural and waste water. The combination of carbonaceous materials (e.g., activated carbon, carbon nanotubes and graphene nanosheets) with TiO2, a recent development, gives significantly improved performance. In this article, we present a critical review of the development and fabrication of carbonaceous-TiO2 and its application to PPCP removal including its influence on water chemistry, and the relevant operational parameters. Finally, we present an analysis of current priorities in the ongoing research and development of carbonaceous-TiO2 for the photodegradation of PPCP.
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Affiliation(s)
- Dion Awfa
- Department of Civil and Environmental Engineering, School of Environment and Society, Tokyo Institute of Technology, 2-12-1, M1-4, Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Mohamed Ateia
- Department of Civil and Environmental Engineering, School of Environment and Society, Tokyo Institute of Technology, 2-12-1, M1-4, Ookayama, Meguro-ku, Tokyo, 152-8552, Japan; Department of Environmental Engineering and Earth Sciences, Clemson University, Clemson, SC 29634, United States; PSIPW Chair, Prince Sultan Institute for Environmental, Water and Desert Research, King Saud University, Saudi Arabia.
| | - Manabu Fujii
- Department of Civil and Environmental Engineering, School of Environment and Society, Tokyo Institute of Technology, 2-12-1, M1-4, Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Matthew S Johnson
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Chihiro Yoshimura
- Department of Civil and Environmental Engineering, School of Environment and Society, Tokyo Institute of Technology, 2-12-1, M1-4, Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
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25
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Zhao L, Deng J, Sun P, Liu J, Ji Y, Nakada N, Qiao Z, Tanaka H, Yang Y. Nanomaterials for treating emerging contaminants in water by adsorption and photocatalysis: Systematic review and bibliometric analysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 627:1253-1263. [PMID: 30857090 DOI: 10.1016/j.scitotenv.2018.02.006] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 02/01/2018] [Accepted: 02/01/2018] [Indexed: 05/25/2023]
Abstract
Emerging contaminants in the aquatic environment have become a worldwide problem. Conventional wastewater treatment processes are ineffective for eliminating the emerging contaminants at trace concentrations. Nanomaterials possessing novel size-dependent properties, however, have shown great potential for removing these contaminants. Herein we reviewed nanomaterials reported for removing emerging contaminants by adsorption and/or photocatalysis, and their removal capacity, mechanism, and influencing factors are discussed. Meanwhile, a large-scale bibliometric analysis is conducted on the trends of the emerging contaminants, nanoadsorbents, nanophotocatalysts, and related research topics from the literature during 1998-2017.
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Affiliation(s)
- Lin Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jinghui Deng
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Peizhe Sun
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Jiashu Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Yi Ji
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Norihide Nakada
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, 1-2 Yumihama, Otsu, Shiga 520-0811, Japan
| | - Zhi Qiao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Hiroaki Tanaka
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, 1-2 Yumihama, Otsu, Shiga 520-0811, Japan
| | - Yongkui Yang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
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26
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Removal of bisphenol A in canned liquid food by enzyme-based nanocomposites. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0675-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Nidheesh PV. Graphene-based materials supported advanced oxidation processes for water and wastewater treatment: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:27047-27069. [PMID: 29081041 DOI: 10.1007/s11356-017-0481-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 10/13/2017] [Indexed: 05/27/2023]
Abstract
Advanced oxidation processes (AOPs) received much attention in the field of water and wastewater treatment due to its ability to mineralize persistent organic pollutants from water medium. The addition of graphene-based materials increased the efficiency of all AOPs significantly. The present review analyzes the performance of graphene-based materials that supported AOPs in detail. Recent developments in this field are highlighted. A special focus has been awarded for the performance enhancement mechanism of AOPs in the presence of graphene-based materials.
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28
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Lima AT, Hofmann A, Reynolds D, Ptacek CJ, Van Cappellen P, Ottosen LM, Pamukcu S, Alshawabekh A, O'Carroll DM, Riis C, Cox E, Gent DB, Landis R, Wang J, Chowdhury AIA, Secord EL, Sanchez-Hachair A. Environmental Electrokinetics for a sustainable subsurface. CHEMOSPHERE 2017; 181:122-133. [PMID: 28433930 DOI: 10.1016/j.chemosphere.2017.03.143] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/27/2017] [Accepted: 03/28/2017] [Indexed: 06/07/2023]
Abstract
Soil and groundwater are key components in the sustainable management of the subsurface environment. Source contamination is one of its main threats and is commonly addressed using established remediation techniques such as in-situ chemical oxidation (ISCO), in-situ chemical reduction (ISCR; most notably using zero-valent iron [ZVI]), enhanced in-situ bioremediation (EISB), phytoremediation, soil-washing, pump-and-treat, soil vapour extraction (SVE), thermal treatment, and excavation and disposal. Decades of field applications have shown that these techniques can successfully treat or control contaminants in higher permeability subsurface materials such as sands, but achieve only limited success at sites where low permeability soils, such as silts and clays, prevail. Electrokinetics (EK), a soil remediation technique mostly recognized in in-situ treatment of low permeability soils, has, for the last decade, been combined with more conventional techniques and can significantly enhance the performance of several of these remediation technologies, including ISCO, ISCR, EISB and phytoremediation. Herein, we discuss the use of emerging EK techniques in tandem with conventional remediation techniques, to achieve improved remediation performance. Furthermore, we highlight new EK applications that may come to play a role in the sustainable treatment of the contaminated subsurface.
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Affiliation(s)
- A T Lima
- Ecohydrology Research Group, Department of Earth and Environmental Sciences and Water Institute, University of Waterloo, Waterloo, Canada; Department of Environmental Engineering, Universidade Federal do Espírito Santo, Vitória, ES, Brazil.
| | - A Hofmann
- University of Lille, CNRS, UMR 8187, LOG, Laboratoire d'Océanologie et de Géosciences, 59655 Villeneuve d'Ascq, France
| | - D Reynolds
- Geosyntec Consultants, Waterloo, Ontario, Canada
| | - C J Ptacek
- Department of Earth and Environmental Sciences and Water Institute, University of Waterloo, Waterloo, Canada
| | - P Van Cappellen
- Ecohydrology Research Group, Department of Earth and Environmental Sciences and Water Institute, University of Waterloo, Waterloo, Canada
| | - L M Ottosen
- Department of Civil Engineering, Technical University of Denmark, Lyngby, Denmark
| | - S Pamukcu
- Department of Civil and Environmental Engineering, Lehigh University, Bethlehem, PA, USA
| | - A Alshawabekh
- Department of Civil and Environmental Engineering, Northeastern University, Boston, MA, USA
| | - D M O'Carroll
- Department of Civil and Environmental Engineering, University of Western Ontario, London, ON, Canada; School of Civil and Environmental Engineering, Connected Water Initiative, University of New South Wales, Manly Vale, NSW, 2093, Australia
| | - C Riis
- NIRAS, Sortemosevej 19, 3450 Alleroed, Denmark
| | - E Cox
- Geosyntec Consultants, Waterloo, Ontario, Canada
| | - D B Gent
- Environmental Laboratory, USACE Engineer Research and Development Center, Vicksburg, MS, USA
| | - R Landis
- RichLand Consulting, LLC, Wilmington, DE, USA
| | - J Wang
- Geosyntec Consultants, Waterloo, Ontario, Canada
| | - A I A Chowdhury
- Department of Civil and Environmental Engineering, University of Western Ontario, London, ON, Canada
| | - E L Secord
- Ecohydrology Research Group, Department of Earth and Environmental Sciences and Water Institute, University of Waterloo, Waterloo, Canada
| | - A Sanchez-Hachair
- University of Lille, CNRS, UMR 8187, LOG, Laboratoire d'Océanologie et de Géosciences, 59655 Villeneuve d'Ascq, France
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29
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Wang Y, Li J, Ding C, Sun Y, Lin Y, Sun W, Luo C. Synthesis of surface plasma photocatalyst Ag loaded TiO 2 nanowire arrays/graphene oxide coated carbon fiber composites and enhancement of the photocatalytic activity for tetracycline hydrochloride degradation. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.04.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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30
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Lian Y, Zhu W, Yao W, Yi H, Hu Z, Duan T, Cheng W, Wei X, Hu G. A biomass carbon mass coated with modified TiO2 nanotube/graphene for photocatalysis. NEW J CHEM 2017. [DOI: 10.1039/c6nj04005e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A floating mass constructed with fungus and Fe/N-TNTs/NG for the photocatalysis on the surface of solution.
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Affiliation(s)
- Yiren Lian
- Laboratory of Extreme Conditions Matter Properties
- Southwest University of Science and Technology
- Mianyang
- China
- CAEP Institute of Technology
| | - Wenkun Zhu
- Laboratory of Extreme Conditions Matter Properties
- Southwest University of Science and Technology
- Mianyang
- China
| | - Weitang Yao
- Laboratory of Extreme Conditions Matter Properties
- Southwest University of Science and Technology
- Mianyang
- China
| | - Huan Yi
- Laboratory of Extreme Conditions Matter Properties
- Southwest University of Science and Technology
- Mianyang
- China
| | - Zuowen Hu
- CAEP Institute of Technology
- Miangyang
- China
| | - Tao Duan
- Laboratory of Extreme Conditions Matter Properties
- Southwest University of Science and Technology
- Mianyang
- China
| | - Wencai Cheng
- Laboratory of Extreme Conditions Matter Properties
- Southwest University of Science and Technology
- Mianyang
- China
| | - Xianfeng Wei
- Laboratory of Extreme Conditions Matter Properties
- Southwest University of Science and Technology
- Mianyang
- China
| | - Guozhen Hu
- CAEP Institute of Technology
- Miangyang
- China
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31
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lian Y, Bai X, Li X, Gao Z, Hu Z, Hu G. Novel fungal hyphae/Fe3O4 and N-TiO2/NG composite for adsorption and photocatalysis. RSC Adv 2017. [DOI: 10.1039/c6ra25964b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new strategy enables TiO2 particles to be suspended in solution by constructing a three-layer structure of FH, FH/Fe3O4, and FH/N-TiO2/NG.
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Affiliation(s)
- Yiren lian
- Graduate School of CAEP
- Mianyang
- China
- CAEP Institute of Technology
- Miangyang
| | - Xueyuan Bai
- Laboratory of Extreme Conditions Matter Properties
- Southwest University of Science and Technology
- Mianyang
- China
| | - Xueqian Li
- State Key Laboratory of Clean Energy Utilization
- Zhejiang University
- Hangzhou
- China
| | - Zhan Gao
- Key Lab. for Power Machinery and Engineering of M. O. E
- Shanghai Jiao Tong University
- Shanghai
- China
| | - Zuowen Hu
- CAEP Institute of Technology
- Miangyang
- China
| | - Guozhen Hu
- CAEP Institute of Technology
- Miangyang
- China
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32
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Photocatalytic antifouling PVDF ultrafiltration membranes based on synergy of graphene oxide and TiO2 for water treatment. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2016.07.060] [Citation(s) in RCA: 269] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Xiang N, Huang J, Zhao H, Liu C, Liu X. A Green Approach to the Synthesis of Reduced Graphene Oxide using Sodium Humate. ACTA ACUST UNITED AC 2016. [DOI: 10.1515/zpch-2016-0762] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A green and simple chemistry approach was demonstrated to prepare reduced graphene oxide (rGO) using sodium humate (SH) as the reducing agent. Without using toxic and harmful chemicals, this method is environmentally friendly and suitable for the large-scale production of graphene. At first, the improved Hummers method to oxidize graphite for the synthesis of graphene oxide (GO) was applied, and then the as-prepared GO was reduced by SH to form rGO. Characterization was performed using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectrometry (XPS) and Raman spectra. The intensity ratio of the D and G band (ID/IG) of GO after reduction with SH increases from 0.96 (GO) to 1.11 (rGO), the results obtained from the Raman spectra proved high purity of the final products.
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Affiliation(s)
- Ning Xiang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, P.R. China
| | - Jiguo Huang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, P.R. China
| | - Honggang Zhao
- Xinjiang Normal University, Urumqi 830054, P.R. China
| | - Chengjia Liu
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, P.R. China
| | - Xingjuan Liu
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, P.R. China
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34
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Wang G, Feng W, Zeng X, Wang Z, Feng C, McCarthy DT, Deletic A, Zhang X. Highly recoverable TiO2-GO nanocomposites for stormwater disinfection. WATER RESEARCH 2016; 94:363-370. [PMID: 26991482 DOI: 10.1016/j.watres.2016.02.067] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Revised: 02/10/2016] [Accepted: 02/29/2016] [Indexed: 06/05/2023]
Abstract
A highly recoverable titanium dioxide-graphene oxide (TiO2-GO) composite was developed by a facile method of ultrasonic treatment of GO nanosheets and TiO2 nanoparticles, which should overcome the separation problem of nanosized TiO2 from treated water. Separability of the prepared samples was systematically investigated by gravity settling experiments. The samples' photocatalytic activity for stormwater disinfection was also studied under the irradiation of a solar simulator. The results demonstrated that TiO2-GO showed high efficient separability due to its accelerated settling behaviour. Zeta-potential analysis showed that the accelerated sedimentation of the catalyst was attributed to the aggregation of TiO2-GO resulting from the electrostatic attraction between TiO2 and GO. The TiO2-GO composite with a mass ratio of 100:2 (TiO2-2%GO) achieved both higher separability and good photocatalytic activity for stormwater disinfection. Its suspension became clear (turbidity < 50 NTU) after 8 h of sedimentation, while 99.5% of E.coli were deactivated in 90 min. The TiO2-GO composite exhibited excellent durability; no apparent change in the separability of TiO2-2%GO was observed after 10 treatment cycles (15 h in total), while only slight decrease in the photocatalytic activity was noted. In conclusion, the developed TiO2-GO composite showed promising results for stormwater disinfection.
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Affiliation(s)
- Gen Wang
- Department of Chemical Engineering, Faculty of Engineering, Monash University, Clayton, VIC, 3800, Australia; School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China
| | - Wenjun Feng
- Environmental and Public Health Microbiology Laboratory. (EPHM Lab), Department of Civil Engineering, Faculty of Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Xiangkang Zeng
- Department of Chemical Engineering, Faculty of Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Zhouyou Wang
- Department of Chemical Engineering, Faculty of Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Chuanping Feng
- School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China
| | - David T McCarthy
- Environmental and Public Health Microbiology Laboratory. (EPHM Lab), Department of Civil Engineering, Faculty of Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Ana Deletic
- Environmental and Public Health Microbiology Laboratory. (EPHM Lab), Department of Civil Engineering, Faculty of Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Xiwang Zhang
- Department of Chemical Engineering, Faculty of Engineering, Monash University, Clayton, VIC, 3800, Australia.
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35
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MoO /TiO2 immobilized on quartz support as structured catalyst for the photocatalytic oxidation of As(III) to As(V) in aqueous solutions. Chem Eng Res Des 2016. [DOI: 10.1016/j.cherd.2016.01.029] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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36
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Dhakshinamoorthy A, Asiri AM, Garcia H. Metall‐organische Gerüstverbindungen: Photokatalysatoren für Redoxreaktion und die Produktion von Solarbrennstoffen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201505581] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Abdullah M. Asiri
- Centre of Excellence for Advanced Materials Research King Abdulaziz University Jeddah Saudi Arabien
| | - Hermenegildo Garcia
- Centre of Excellence for Advanced Materials Research King Abdulaziz University Jeddah Saudi Arabien
- Instituto de Tecnología Química CSIV-UPV Av. De los Naranjos s/n 46022 Valencia Spanien
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37
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Dhakshinamoorthy A, Asiri AM, García H. Metal–Organic Framework (MOF) Compounds: Photocatalysts for Redox Reactions and Solar Fuel Production. Angew Chem Int Ed Engl 2016; 55:5414-45. [DOI: 10.1002/anie.201505581] [Citation(s) in RCA: 708] [Impact Index Per Article: 88.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 08/06/2015] [Indexed: 11/06/2022]
Affiliation(s)
| | - Abdullah M. Asiri
- Centre of Excellence for Advanced Materials Research King Abdulaziz University Jeddah Saudi Arabia
| | - Hermenegildo García
- Centre of Excellence for Advanced Materials Research King Abdulaziz University Jeddah Saudi Arabia
- Instituto de Tecnología Química CSIV-UPV Av. De los Naranjos s/n 46022 Valencia Spain
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38
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Abstract
AbstractOne of the main public concerns is the aquatic habitat and its corresponding issues because of the incessant contamination of the ecological water systems. In recent years, research attention has been focused on processes that lead to an improved oxidative degradation of organic pollutants. Therefore, semiconductor photocatalysis technology has aroused scientists’ interest in environmental remediation. Although several semiconductors have proven to be ideal candidates for the treatment of water pollution, the efficient separation and recycling of this fine-powdered photocatalyst is still a scientific problem when applied in practice, including separation process, selectivity, and dispersion. A photocatalyst with magnetic properties allows the use of the technique of magnetic separation, which is one of the most effective and simple methods for removing suspended solids from wastewater without the need for further separation processes. The magnetic photocatalyst allows its use as a suspended material, providing the advantage to have a high surface area for reaction. This review highlights the advantages and disadvantages of current photocatalyst systems. Moreover, it focuses on hybrid magnetic photocatalysts, including metals and nonmetals, metal oxides, carbon-based materials, and ceramics.
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39
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Jiang YN, Liu BD, Yang WJ, Yang B, Liu XY, Zhang XL, Mohsin MA, Jiang X. New strategy for the in situ synthesis of single-crystalline MnWO4/TiO2photocatalysts for efficient and cyclic photodegradation of organic pollutants. CrystEngComm 2016. [DOI: 10.1039/c5ce02445e] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Tang Y, Liu X, Ma C, Zhou M, Huo P, Yu L, Pan J, Shi W, Yan Y. Enhanced photocatalytic degradation of tetracycline antibiotics by reduced graphene oxide–CdS/ZnS heterostructure photocatalysts. NEW J CHEM 2015. [DOI: 10.1039/c5nj00681c] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Ternary RGO–CdS/ZnS heterostructures with enhanced visible-light photocatalytic activity have been prepared by a facile hydrothermal method.
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Affiliation(s)
- Yanfeng Tang
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Xinlin Liu
- School of Materials Science & Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Changchang Ma
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Mingjun Zhou
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Pengwei Huo
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Longbao Yu
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Jianming Pan
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Weidong Shi
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
| | - Yongsheng Yan
- School of Chemistry & Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- People's Republic of China
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41
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Du H, Wang Z, Chen Y, Liu Y, Liu Y, Li B, Wang X, Cao H. Anchoring superparamagnetic core–shells onto reduced graphene oxide: fabrication of Ni–carbon–rGO nanocomposite for effective adsorption and separation. RSC Adv 2015. [DOI: 10.1039/c4ra14651d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The magnetic Ni nanoparticles encapsulated in carbon shells were anchored on to reduced graphene oxide. The excellent removal ability of organic dyes and enhanced separation efficiency make NGC a useful candidate for waste water treatment.
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Affiliation(s)
- Hang Du
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Zhen Wang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Yinghao Chen
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Yanyan Liu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Yushan Liu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Baojun Li
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
- Department of Chemistry
| | - Xiangyu Wang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P. R. China
| | - Huaqiang Cao
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- P. R. China
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