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Schossler RT, Ojo S, Jiang Z, Hu J, Yu X. A novel interpretable machine learning model approach for the prediction of TiO 2 photocatalytic degradation of air contaminants. Sci Rep 2024; 14:13070. [PMID: 38844551 PMCID: PMC11156991 DOI: 10.1038/s41598-024-62450-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 05/16/2024] [Indexed: 06/09/2024] Open
Abstract
Air contaminants lead to various environmental and health issues. Titanium dioxide (TiO2) features the benefits of autogenous photocatalytic degradation of air contaminants. To evaluate its performance, laboratory experiments are commonly used to determine the kinetics of the photocatalytic-degradation rate, which is labor intensive, time-consuming, and costly. In this study, Machine Learning (ML) models were developed to predict the photo-degradation rate constants of air-borne organic contaminants with TiO2 nanoparticles and ultraviolet irradiation. The hyperparameters of the ML models were optimized, which included Artificial Neural Network (ANN) with Bayesian optimization, gradient booster regressor (GBR) with Bayesian optimization, Extreme Gradient Boosting (XGBoost) with optimization using Hyperopt, and Catboost combined with Adaboost. The organic contaminant was encoded through Molecular fingerprints (MF). Imputation method was applied to deal with the missing data. A generative ML model Vanilla Gan was utilized to create synthetic data to further augment the size of available dataset and the SHapley Additive exPlanations (SHAP) was employed for ML model interpretability. The results indicated that data imputation allowed for the full utilization of the limited dataset, leading to good machine learning prediction performance and preventing common overfitting problems with small-sized data. Additionally, augmenting experimental data with synthetic data significantly improved prediction accuracy and considerably reduced overfitting issues. The results ranked the feature importance and assessed the impacts of different experimental variables on the rate of photo-degradation, which were consistent with physico-chemical laws.
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Affiliation(s)
- Rodrigo Teixeira Schossler
- Department of Civil and Environmental Engineering, Case Western Reserve University, Bingham Building-Room 237, Cleveland, OH, 44106, USA
| | - Samuel Ojo
- Department of Civil and Environmental Engineering, Case Western Reserve University, Bingham Building-Room 237, Cleveland, OH, 44106, USA
| | - Zhuoying Jiang
- Department of Civil and Environmental Engineering, Case Western Reserve University, Bingham Building-Room 237, Cleveland, OH, 44106, USA
| | - Jiajie Hu
- Department of Civil and Environmental Engineering, Case Western Reserve University, Bingham Building-Room 237, Cleveland, OH, 44106, USA
| | - Xiong Yu
- Department of Civil and Environmental Engineering, Case Western Reserve University, Bingham Building-Room 237, Cleveland, OH, 44106, USA.
- Department of Electrical Engineering and Computer Science (courtesy appointment), Case Western Reserve University, Bingham Building-Room 237, Cleveland, OH, 44106, USA.
- Department of Mechanical and Aerospace Engineering (Courtesy Appointment), Case Western Reserve University, Bingham Building-Room 237, Cleveland, OH, 44106, USA.
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2
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Kutorglo EM, Schwarze M, Nguyen AD, Tameu SD, Huseyinova S, Tasbihi M, Görke O, Primbs M, Šoóš M, Schomäcker R. Efficient full solar spectrum-driven photocatalytic hydrogen production on low bandgap TiO 2/conjugated polymer nanostructures. RSC Adv 2023; 13:24038-24052. [PMID: 37577094 PMCID: PMC10414019 DOI: 10.1039/d3ra04049f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/01/2023] [Indexed: 08/15/2023] Open
Abstract
The development of photocatalysts that can utilize the entire solar spectrum is crucial to achieving efficient solar energy conversion. The utility of the benchmark photocatalyst, TiO2, is limited only to the UV region due to its large bandgap. Extending the light harvesting properties across the entire spectrum is paramount to enhancing solar photocatalytic performance. In this work, we developed low bandgap TiO2/conjugated polymer nanostructures which exhibit full spectrum activity for efficient H2 production. The highly mesoporous structure of the nanostructures together with the photosensitizing properties of the conjugated polymer enabled efficient solar light activity. The mesoporous TiO2 nanostructures calcined at 550 °C exhibited a defect-free anatase crystalline phase with traces of brookite and high surface area, resulting in the best performance in hydrogen production (5.34 mmol g-1 h-1) under sunlight simulation. This value is higher not only in comparison to other TiO2-based catalysts but also to other semiconductor materials reported in the literature. Thus, this work provides an effective strategy for the construction of full spectrum active nanostructured catalysts for enhanced solar photocatalytic hydrogen production.
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Affiliation(s)
- Edith Mawunya Kutorglo
- Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124, TC8 Berlin 10623 Germany
- Bioengineering and Advanced Materials Laboratory, Department of Chemical Engineering, University of Chemistry and Technology Prague Prague 166 28 Czech Republic
| | - Michael Schwarze
- Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124, TC8 Berlin 10623 Germany
| | - Anh Dung Nguyen
- Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124, TC8 Berlin 10623 Germany
| | - Simon Djoko Tameu
- Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124, TC8 Berlin 10623 Germany
| | - Shahana Huseyinova
- Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124, TC8 Berlin 10623 Germany
- University of Santiago de Compostela, Department of Chemistry Avenida do Mestre Mateo 25 Santiago de Compostela 15706 Spain
| | - Minoo Tasbihi
- Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124, TC8 Berlin 10623 Germany
| | - Oliver Görke
- Department of Ceramic Materials, Faculty III: Process Sciences, Technische Universität Berlin Berlin 10623 Germany
| | - Matthias Primbs
- The Electrochemical Energy, Catalysis, and Materials Science Laboratory, Department of Chemistry, Chemical Engineering Division, Technische Universität Berlin Berlin 10623 Germany
| | - Miroslav Šoóš
- Bioengineering and Advanced Materials Laboratory, Department of Chemical Engineering, University of Chemistry and Technology Prague Prague 166 28 Czech Republic
| | - Reinhard Schomäcker
- Department of Chemistry, Technische Universität Berlin Straße des 17. Juni 124, TC8 Berlin 10623 Germany
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3
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Kumar DP, Nollen LM, Rangappa AP, Kim TK. Effective dye degradation by an environment-friendly porous few-layered carbon nitride photocatalyst developed using sequential molecule self-assembly. ENVIRONMENTAL RESEARCH 2022; 204:112362. [PMID: 34767816 DOI: 10.1016/j.envres.2021.112362] [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: 08/09/2021] [Revised: 10/24/2021] [Accepted: 11/05/2021] [Indexed: 06/13/2023]
Abstract
Two-dimensional (2D) g-C3N4 (CN) has garnered massive interest for photocatalytic applications owing to its excellent photon contact area, visible-light absorption, and easy transport of photogenerated charge carriers to the surface. However, bulk CN suffers from intrinsically poor charge separation, limited specific surface area, and insufficient visible-light absorption, significantly limiting its photocatalytic efficiency. Exfoliation of bulk crystals into nanosheets with few layers has proven to be an effective and widely used strategy to enhance photocatalytic performance; however, this process is quite complicated, requiring longer times and external energy. Here, a few-layered porous g-C3N4 (PCN) was synthesized using the molecular self-assembly process. This prepared PCN exposes more active sites, leading to enhanced separation of charge carriers, resulting in a higher photocatalytic activity than regular CN. PCN achieved the best photocatalytic degradation (97.46%) of Rhodamine B (RhB) dye in 1 h, which is three times higher than that by CN (32.57%) because of enhanced porosity of the photocatalyst with few layers. This enhanced degradation performance of PCN was caused by increased visible-light absorption and charge separation along with higher number exposed active sites triggered by the high porosity under visible light, which is greater than those of other metal-free photocatalysts reported thus far.
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Affiliation(s)
- D Praveen Kumar
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Lucina-May Nollen
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - A Putta Rangappa
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Tae Kyu Kim
- Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea.
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4
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Shamim JA, Hsu WL, Daiguji H. Review of component designs for post-COVID-19 HVAC systems: Possibilities and challenges. Heliyon 2022; 8:e09001. [PMID: 35224237 PMCID: PMC8863315 DOI: 10.1016/j.heliyon.2022.e09001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 09/16/2021] [Accepted: 02/18/2022] [Indexed: 11/01/2022] Open
Abstract
The globally occurring recurrent waves of the COVID-19 pandemic, primarily caused by the transmission of aerosolized droplets from an infected person to a healthy person in the indoor environment, has led to the urgency of designing new modes of indoor ventilation. To prevent cross-contaminations due to airborne viruses, bacteria, and other pollutants in indoor environments, heating ventilation and air-conditioning (HVAC) systems need to be redesigned with anti-pandemic components. The three vital anti-pandemic components for the post-COVID-19 HVAC systems, as identified by the authors, are: a biological contaminant inactivation unit, a volatile organic compound decomposition unit, and an advanced air filtration unit. The purpose of the current article is to provide an overview of the latest research outcomes toward designing these anti-pandemic components and pointing out the future promises and challenges. In addition, the role of personalized ventilation in minimizing the risk of indoor cross-contamination by employing various air terminal devices is discussed. The authors believe that this article will encourage HVAC designers to develop effective anti-pandemic components to minimize the indoor airborne transmission.
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Affiliation(s)
- Jubair A Shamim
- Department of Mechanical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Wei-Lun Hsu
- Department of Mechanical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Hirofumi Daiguji
- Department of Mechanical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Samiolo L, Amadelli R, Maldotti A, Molinari A. Comparative visible-light driven selective oxidation to aldehydes of phenylmethanol (benzyl alcohol) and 4-pyridinylmethanol (4-pyridinecarbinol) on N-TiO 2 and some commercial TiO 2 samples. Photochem Photobiol Sci 2021; 20:1635-1644. [PMID: 34802142 DOI: 10.1007/s43630-021-00137-4] [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: 09/01/2021] [Accepted: 11/08/2021] [Indexed: 10/19/2022]
Abstract
Visible light (λ > 420 nm) selective photooxidation of phenylmethanol and 4-pyridinylmethanol in CH3CN to the corresponding aldehydes on N-TiO2 is compared with homemade undoped TiO2 (U-TiO2) and commercial undoped anatase specimens (such as PC105, PC500). Significant differences observed between N-TiO2 and undoped TiO2 are neither directly related to the surface area nor to the adsorbed amount of alcohol in the dark by surface area unit. FTIR and EPR spectroscopies are used to study the surface of TiO2 samples and to deeply understand the phenomena intervening in the visible-light photocatalytic activation of the doped vs the undoped oxides. In particular, it is shown that on N-TiO2 (and also on undoped PC105) strong Lewis acid sites (LAS) exist. The favorable role of LAS on the photocatalytic activity is illustrated by the higher photooxidation of 4-pyridinylmethanol vs phenylmethanol over N-TiO2 and PC105 in contrast to the other undoped samples, whose visible light sensitivity originates from a charge transfer between the alcohol and the solid. EPR spectra of N-TiO2 point out the presence of paramagnetic centers related to nitrogen that disappear when the photocatalyst is irradiated with visible light in the presence of alcohol, which starts its oxidative process. On the basis of presented results, we propose that doping with N introduces new intraband gap states that not only contribute to LAS and adsorption of alcohol but also are directly involved in the photochemical process occurring under visible light irradiation.
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Affiliation(s)
- Luca Samiolo
- c/o Dipartimento di Scienze Chimiche, Farmaceutiche ed Agrarie, ISOF CNR, UoS di Ferrara, Università di Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy
| | - Rossano Amadelli
- c/o Dipartimento di Scienze Chimiche, Farmaceutiche ed Agrarie, ISOF CNR, UoS di Ferrara, Università di Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy
| | - Andrea Maldotti
- Dipartimento di Scienze Chimiche, Farmaceutiche ed Agrarie, Università di Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy
| | - Alessandra Molinari
- Dipartimento di Scienze Chimiche, Farmaceutiche ed Agrarie, Università di Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy.
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6
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Green synthesis of nano-titania (TiO2 NPs) utilizing aqueous Eucalyptus globulus leaf extract: applications in the synthesis of 4H-pyran derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-018-03720-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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7
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Metal-rich metallaboranes: Clusters containing triply and tetra bridging borylene and boride units. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213796] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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8
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Paumo HK, Dalhatou S, Katata-Seru LM, Kamdem BP, Tijani JO, Vishwanathan V, Kane A, Bahadur I. TiO2 assisted photocatalysts for degradation of emerging organic pollutants in water and wastewater. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115458] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Abstract
This article presents an overview of the reports on the doping of TiO2 with carbon, nitrogen, and sulfur, including single, co-, and tri-doping. A comparison of the properties of the photocatalysts synthesized from various precursors of TiO2 and C, N, or S dopants is summarized. Selected methods of synthesis of the non-metal doped TiO2 are also described. Furthermore, the influence of the preparation conditions on the doping mode (interstitial or substitutional) with reference to various types of the modified TiO2 is summarized. The mechanisms of photocatalysis for the different modes of the non-metal doping are also discussed. Moreover, selected applications of the non-metal doped TiO2 photocatalysts are shown, including the removal of organic compounds from water/wastewater, air purification, production of hydrogen, lithium storage, inactivation of bacteria, or carbon dioxide reduction.
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10
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Lacerda LHS, de Lazaro SR. Density Functional Theory investigation of rhombohedral multiferroic oxides for photocatalytic water splitting and organic photodegradation. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112656] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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11
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Zhang Y, Xu X. Machine Learning Band Gaps of Doped-TiO 2 Photocatalysts from Structural and Morphological Parameters. ACS OMEGA 2020; 5:15344-15352. [PMID: 32637808 PMCID: PMC7331044 DOI: 10.1021/acsomega.0c01438] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 06/08/2020] [Indexed: 05/09/2023]
Abstract
Titanium dioxide (TiO2) photocatalysts in the form of thin films are of great interest due to their tunable optical band gaps, E g's, which are promising candidates for applications of visible-light photocatalytic activities. Previous studies have shown that processing conditions, dopant types and concentrations, and different combinations of the two have great impacts on structural, microscopic, and optical properties of TiO2 thin films. The lattice parameters and surface area are strongly correlated with E g values, which are conventionally simulated and studied through first-principle models, but these models require significant computational resources, particularly in complex situations involving codoping and various surface areas. In this study, we develop the Gaussian process regression model for predictions of anatase TiO2 photocatalysts' energy band gaps based on the lattice parameters and surface area. We explore 60 doped-TiO2 anatase photocatalysts with E g's between 2.280 and 3.250 eV. Our model demonstrates a high correlation coefficient of 99.99% between predicted E g's and their experimental values and high prediction accuracy as reflected through the prediction root-mean-square error and mean absolute error being 0.0012 and 0.0010% of the average experimental E g, respectively. This modeling method is simple and straightforward and does not require a lot of parameters, which are advantages for applications and computations.
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12
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Bahmanrokh G, Cazorla C, Mofarah SS, Shahmiri R, Yao Y, Ismail I, Chen WF, Koshy P, Sorrell CC. Band gap engineering of Ce-doped anatase TiO 2 through solid solubility mechanisms and new defect equilibria formalism. NANOSCALE 2020; 12:4916-4934. [PMID: 31967150 DOI: 10.1039/c9nr08604h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The present work reports a detailed mechanistic interpretation of the role of the solubility of dopants and resultant midgap defect energies in band gap engineering. While there is a general perception that a single dopant is associated with single solubility and defect mechanisms, in reality, the potential for multiple solubility and defect mechanisms requires a more nuanced interpretation. Similarly, Kröger-Vink defect equilibria assume that stoichiometries during substitutional and interstitial solid solubility as well as Schottky and Frenkel pair formation are compensated by the diffusion of matrix ions to the grain boundaries or surface. However, this approach does not allow the possibility that stoichiometry is uncompensated, where diffusion of the matrix ion to lattice interstices occurs, followed by charge compensation by redox of this ion. Consequently, a modified defect equilibria formalism has been developed in order to allow description of this situation. Experimental data for the structural, chemical, semiconducting, and photocatalytic properties as a function of doping level are correlated with conceptual structural models, a comprehensive energy band diagram, and the corresponding defect equilibria. These correlations reveal the complex mechanisms of the interrelated solubility and defect formation mechanisms, which change significantly and irregularly as a function of small changes in doping level. The analyses confirm that the assumption of single mechanisms of solid solubility and defect formation may be simplifications of more complex processes. The generation of (1) a matrix of complementary characterisation and analytical data, (2) the calculation of a complete energy band diagram, (3) consideration of charge compensation mechanisms and redox beyond the limitations of Kröger-Vink approaches, and (4) the development of models of corresponding structural analogies combine to create a new approach to interpret and explain experimental data. These strategies allow deconstruction of these complex issues and thus targeting of optimal and possibly unique doping levels to achieve lattice configurations that may be energetically and structurally unfavorable. These approaches then can be applied to other doped semiconducting systems.
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Affiliation(s)
- Ghazaleh Bahmanrokh
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
| | - Claudio Cazorla
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
| | - Sajjad S Mofarah
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
| | - Reza Shahmiri
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
| | - Yin Yao
- Electron Microscope Unit, Mark Wainwright Analytical Centre, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Ismayadi Ismail
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Wen-Fan Chen
- Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Pramod Koshy
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
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13
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Recent Progress in Biochar-Based Photocatalysts for Wastewater Treatment: Synthesis, Mechanisms, and Applications. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10031019] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Biochar (BC) is a carbon-rich material produced from pyrolysis of biomass. In addition to its low toxicity, environmental compatibility, and low cost, BC has the desired advantages of well-developed mesoporous structure and abundant surface functional groups. In recent years, BC-based photocatalysts (BCPs) have played a significant role in many environmental fields. In this paper, we highlight the current progress and several exciting results of BCPs by focusing on their synthesis, characterization, mechanisms, and applications in wastewater treatment. Details on various preparation methods include sol–gel, hydrothermal/solvothermal, ultrasound, calcination, and in situ methods are summarized and discussed. The underlying mechanisms and the applications of BCPs for different semiconductors are reviewed. Furthermore, some future trends and potentials are outlined.
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14
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Riaz N, Hassan M, Siddique M, Mahmood Q, Farooq U, Sarwar R, Khan MS. Photocatalytic degradation and kinetic modeling of azo dye using bimetallic photocatalysts: effect of synthesis and operational parameters. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:2992-3006. [PMID: 31838680 DOI: 10.1007/s11356-019-06727-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 10/10/2019] [Indexed: 05/14/2023]
Abstract
Industrial wastewaters are the major source polluting the surface and ground water resources. Pollutants released along with the untreated textile industry wastewaters are responsible for the great damage to the natural resources like water. Considering the hazardous effects of the azo dyes (textile coloring agents) and their byproducts, there is a need to develop cost-effective and efficient treatment method for the textile wastewaters as such dyes have been reported as toxic, mutagenic, and carcinogenic and can cause direct demolition of aquatic communities. One of the possible and effective treatment methods is the use of TiO2 photocatalysis due to its chemical stability, low cost, and non-toxic nature. The present study explored the photocatalytic potential of anatase-type of bimetallic Cu-Ni/TiO2 photocatalysts under visible light irradiation for possible photocatalytic degradation and mineralization of Methyl Orange (MO), as model azo dye. The focus was to correlate the synthesis (different calcination temperatures, phase composition of TiO2 either anatase or rutile, and metal ion loading in terms of concentration and composition (Cu:Ni)) and operational parameters (photocatalyst loading, pollutant concentration, and irradiation time) that were believed responsible for the enhanced photocatalytic performance. Blank experiments were carried out to check the effect of metal loading in comparison to bare TiO2 and effect of absence or presence of light and photocatalysts on MO photodegradation. Results obtained using bimetallic photocatalysts are promising as compared to bare TiO2 as 100% MO removal and ~ 90% %COD removal were obtained in 90 min of irradiation, obeying a pseudo-first-order kinetics with photocatalytic reaction via the Langmuir-Hinshelwood mechanism with a good linear fit. Photocatalysts synthesized using anatase TiO2 were reported with improved performance compared to rutile phase. It is evident that synthesis parameters influence photocatalyst performance directly. The higher rate constant (> 1) that proves the excellent adsorption capacity of the tested photocatalysts for tested pollutants on the surface may have a great prospective for photocatalytic water purification at neutral pH.
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Affiliation(s)
- Nadia Riaz
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan.
| | - Maryam Hassan
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan
| | - Maria Siddique
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan
| | - Qaisar Mahmood
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan.
| | - Umar Farooq
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan
| | - Rizwana Sarwar
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan
| | - Muhammad Saqib Khan
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan
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15
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Salari H, Kohantorabi M. Fabrication of novel Fe2O3/MoO3/AgBr nanocomposites with enhanced photocatalytic activity under visible light irradiation for organic pollutant degradation. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.11.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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16
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Dey K, Ganguli S, Alam MS. Benign Hydrothermal Synthesis of N‐doped TiO
2
and TiO
2
‐CoS Nanostructures for Enhanced Visible‐Light Driven Photocatalytic Activity. ChemistrySelect 2019. [DOI: 10.1002/slct.201903406] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kamol Dey
- Biomaterials Research Laboratory, Department of Applied Chemistry and Chemical Engineering, Faculty of ScienceUniversity of Chittagong Chittagong- 4331 Bangladesh
- Department of Mechanical and Industrial EngineeringUniversity of Brescia Brescia- 25123 Italy
| | - Sumon Ganguli
- Biomaterials Research Laboratory, Department of Applied Chemistry and Chemical Engineering, Faculty of ScienceUniversity of Chittagong Chittagong- 4331 Bangladesh
| | - M. S. Alam
- Department of Physics, Faculty of ScienceUniversity of Chittagong Chittagong- 4331 Bangladesh
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17
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TiO 2 and Au-TiO 2 Nanomaterials for Rapid Photocatalytic Degradation of Antibiotic Residues in Aquaculture Wastewater. MATERIALS 2019; 12:ma12152434. [PMID: 31370138 PMCID: PMC6695739 DOI: 10.3390/ma12152434] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 07/26/2019] [Accepted: 07/27/2019] [Indexed: 11/17/2022]
Abstract
Antibiotic residues in aquaculture wastewater are considered as an emerging environmental problem, as they are not efficiently removed in wastewater treatment plants. To address this issue, we fabricated TiO2 nanotube arrays (TNAs), TiO2 nanowires on nanotube arrays (TNWs/TNAs), Au nanoparticle (NP)-decorated-TNAs, and TNWs/TNAs, which were applied for assessing the photocatalytic degradation of eight antibiotics, simultaneously. The TNAs and TNWs/TNAs were synthesized by anodization using an aqueous NH4F/ethylene glycol solution. Au NPs were synthesized by chemical reduction method, and used to decorate on TNAs and TNWs/TNAs. All the TiO2 nanostructures exhibited anatase phase and well-defined morphology. The photocatalytic performance of TNAs, TNWs/TNAs, Au-TNAs and Au-TNWs/TNAs was studied by monitoring the degradation of amoxicillin, ampicillin, doxycycline, oxytetracycline, lincomycin, vancomycin, sulfamethazine, and sulfamethoxazole under ultraviolet (UV)-visible (VIS), or VIS illumination by LC-MS/MS method. All the four kinds of nanomaterials degraded the antibiotics effectively and rapidly, in which most antibiotics were removed completely after 20 min treatment. The Au-TNWs/TNAs exhibited the highest photocatalytic activity in degradation of the eight antibiotics. For example, reaction rate constants of Au-TNWs/TNAs for degradation of lincomycin reached 0.26 min−1 and 0.096 min−1 under UV-VIS and VIS irradiation, respectively; and they were even higher for the other antibiotics. The excellent photocatalytic activity of Au-TNWs/TNAs was attributed to the synergistic effects of: (1) The larger surface area of TNWs/TNAs as compared to TNAs, and (2) surface plasmonic effect in Au NPs to enhance the visible light harvesting.
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Chen Y, Luo X, Luo Y, Xu P, He J, Jiang L, Li J, Yan Z, Wang J. Efficient Charge Carrier Separation in l-Alanine Acids Derived N-TiO 2 Nanospheres: The Role of Oxygen Vacancies in Tetrahedral Ti 4+ Sites. NANOMATERIALS 2019; 9:nano9050698. [PMID: 31060270 PMCID: PMC6566907 DOI: 10.3390/nano9050698] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/29/2019] [Accepted: 04/29/2019] [Indexed: 11/16/2022]
Abstract
N-doped TiO2 with oxygen vacancies exhibits many advantages for photocatalysis, such as enhanced visible light absorbency, inhibition of the photogenerated charge carrier recombination, etc. However, preparation of N-doped TiO2 with oxygen vacancies under mild conditions is still a challenge. Herein, N-doped TiO2 nanospheres with tetrahedral Ti4+ sites were synthesized by using dodecylamine as template and assisted by l-alanine acids. The obtained samples were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and UV–Vis diffuse reflectance spectra (UV–Vis DRS). It was found that the dodecylamine as a neutral surfactant controlled the structure of TiO2 spherical, while l-alanine acids provided a nitrogen source. The existence of tetrahedral Ti4+ sites in N-doped TiO2 was also confirmed. The N-doped TiO2 sample with tetrahedral Ti4+ sites exhibited significantly improved photocatalytic performance for degradation of methylene blue solution under UV light or visible light irradiation. A combined time-resolved infrared (IR) spectroscopy study reveals that the enhanced photocatalytic performance could be attributed to a large amount of photogenerated charge carriers and efficient charge separation. It is demonstrated that the shallow donor state produced by oxygen vacancies of tetrahedral Ti4+ sites can effectively promote separation of charge carriers besides capturing electrons.
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Affiliation(s)
- Yongjuan Chen
- School of Chemical Sciences & Technology, National Center for International Research on Photoelectric and Energy Materials, Yunnan Provincial Collaborative Innovation Center of Green Chemistry for Lignite Energy, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Yunnan University, Kunming 650091, China.
| | - Xiu Luo
- School of Chemical Sciences & Technology, National Center for International Research on Photoelectric and Energy Materials, Yunnan Provincial Collaborative Innovation Center of Green Chemistry for Lignite Energy, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Yunnan University, Kunming 650091, China.
| | - Yao Luo
- School of Chemical Sciences & Technology, National Center for International Research on Photoelectric and Energy Materials, Yunnan Provincial Collaborative Innovation Center of Green Chemistry for Lignite Energy, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Yunnan University, Kunming 650091, China.
| | - Peiwen Xu
- School of Chemical Sciences & Technology, National Center for International Research on Photoelectric and Energy Materials, Yunnan Provincial Collaborative Innovation Center of Green Chemistry for Lignite Energy, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Yunnan University, Kunming 650091, China.
| | - Jiao He
- School of Chemical Sciences & Technology, National Center for International Research on Photoelectric and Energy Materials, Yunnan Provincial Collaborative Innovation Center of Green Chemistry for Lignite Energy, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Yunnan University, Kunming 650091, China.
| | - Liang Jiang
- School of Chemical Sciences & Technology, National Center for International Research on Photoelectric and Energy Materials, Yunnan Provincial Collaborative Innovation Center of Green Chemistry for Lignite Energy, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Yunnan University, Kunming 650091, China.
| | - Junjie Li
- School of Chemical Sciences & Technology, National Center for International Research on Photoelectric and Energy Materials, Yunnan Provincial Collaborative Innovation Center of Green Chemistry for Lignite Energy, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Yunnan University, Kunming 650091, China.
| | - Zhiying Yan
- School of Chemical Sciences & Technology, National Center for International Research on Photoelectric and Energy Materials, Yunnan Provincial Collaborative Innovation Center of Green Chemistry for Lignite Energy, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Yunnan University, Kunming 650091, China.
| | - Jiaqiang Wang
- School of Chemical Sciences & Technology, National Center for International Research on Photoelectric and Energy Materials, Yunnan Provincial Collaborative Innovation Center of Green Chemistry for Lignite Energy, Yunnan Province Engineering Research Center of Photocatalytic Treatment of Industrial Wastewater, The Universities' Center for Photocatalytic Treatment of Pollutants in Yunnan Province, Yunnan University, Kunming 650091, China.
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19
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Wang X, Wang LL, Guo D, Ma LL, Zhu BL, Wang P, Wang GC, Zhang SM, Huang WP. Fabrication and photocatalytic performance of C, N, F-tridoped TiO2 nanotubes. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.05.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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N–TiO2 Photocatalysts: A Review of Their Characteristics and Capacity for Emerging Contaminants Removal. WATER 2019. [DOI: 10.3390/w11020373] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Titanium dioxide is the most used photocatalyst in wastewater treatment; its semiconductor capacity allows the indirect production of reactive oxidative species. The main drawback of the application of TiO2 is related to its high band-gap energy. The nonmetal that is most often used as the doping element is nitrogen, which is due to its capacity to reduce the band-gap energy at low preparation costs. There are multiple and assorted methods of preparation. The main advantages and disadvantages of a wide range of preparation methods were discussed in this paper. Different sources of N were also analyzed, and their individual impact on the characteristics of N–TiO2 was assessed. The core of this paper was focused on the large spectrum of analytical techniques to detect modifications in the TiO2 structure from the incorporation of N. The effect of N–TiO2 co-doping was also analyzed, as well as the main characteristics that are relevant to the performance of the catalyst, such as its particle size, surface area, quantum size effect, crystalline phases, and the hydrophilicity of the catalyst surface. Powder is the most used form of N–TiO2, but the economic benefits and applications involving continuous reactors were also analyzed with supported N–TiO2. Moreover, the degradation of contaminants emerging from water and wastewater using N–TiO2 and co-doped TiO2 was also discussed.
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21
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Jin Y, Zhang S, Xu H, Ma C, Sun J, Li H, Pei H. Application of N-TiO 2 for visible-light photocatalytic degradation of Cylindrospermopsis raciborskii - More difficult than that for photodegradation of Microcystis aeruginosa ? ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 245:642-650. [PMID: 30481678 DOI: 10.1016/j.envpol.2018.11.056] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 11/16/2018] [Accepted: 11/18/2018] [Indexed: 06/09/2023]
Abstract
Nowadays Cylindrospermopsis raciborskii (C. raciborskii) and the metabolites produced, such as cylindrospermopsin (CYN), pose a serious threat to the ecosystem. Advanced oxidation technologies have been verified as constituting a very promising means to eliminate the risk from harmful algae. But so far little research has focused on the visible-light photocatalytic destruction of C. raciborskii cells and the degradation of their metabolites. In our study, N-doped TiO2 (N-TiO2) was used to degrade C. raciborskii and the degradation was compared with that of the Microcystis aeruginosa (M. aeruginosa). Results showed that although the photodegradation of C. raciborskii was more difficult than that of M. aeruginosa, the treatment with N-TiO2 was still satisfactory. After adding 200 mg/L N-TiO2, C. raciborskii cells (5 × 106 cells/mL) were completely destroyed within 20 h under visible light irradiation, and nearly 90% of the organic matter and CYN in the suspensions were also degraded, thereby markedly improving the water quality. The photocatalytic process starts with damage to the cell membrane resulting in the leakage of internal components. Subsequently, the leaked metabolites were oxidised by the reactive oxidizing species produced by N-TiO2. Thus, the application of N-TiO2 is a promising method for the treatment of C. raciborskii.
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Affiliation(s)
- Yan Jin
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Shasha Zhang
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Hangzhou Xu
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Chunxia Ma
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Jiongming Sun
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Hongmin Li
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Haiyan Pei
- School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China; Shandong Provincial Engineering Centre for Environmental Science and Technology, Jinan, 250061, China.
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22
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Sun M, Jiang Y, Tian M, Yan H, Liu R, Yang L. Deposition of platinum on boron-doped TiO2/Ti nanotube arrays as an efficient and stable photocatalyst for hydrogen generation from water splitting. RSC Adv 2019; 9:11443-11450. [PMID: 35520251 PMCID: PMC9063345 DOI: 10.1039/c9ra00475k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Accepted: 03/25/2019] [Indexed: 11/21/2022] Open
Abstract
Pt–B/TiO2/Ti NTs, prepared by anodic oxidation and photo-deposition methods, showed excellent photocatalytic activity.
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Affiliation(s)
- Mengjia Sun
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
| | - Yanli Jiang
- Department of Chemistry
- Harbin University
- Harbin
- P. R. China
| | - Mei Tian
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
- Department of Chemistry
| | - Huijun Yan
- Department of Chemistry
- Harbin University
- Harbin
- P. R. China
| | - Ran Liu
- Department of Chemistry
- Harbin University
- Harbin
- P. R. China
| | - Lijuan Yang
- Department of Chemistry
- Harbin University
- Harbin
- P. R. China
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23
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Mizrahi A, Meyerstein D. Plausible roles of carbonate in catalytic water oxidation. ADVANCES IN INORGANIC CHEMISTRY 2019. [DOI: 10.1016/bs.adioch.2019.03.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Enhanced Photocatalytic Performance of Nitrogen-Doped TiO₂ Nanotube Arrays Using a Simple Annealing Process. MICROMACHINES 2018; 9:mi9120618. [PMID: 30477205 PMCID: PMC6316549 DOI: 10.3390/mi9120618] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 11/08/2018] [Accepted: 11/20/2018] [Indexed: 11/29/2022]
Abstract
Nitrogen-doped TiO2 nanotube arrays (N-TNAs) were successfully fabricated by a simple thermal annealing process in ambient N2 gas at 450 °C for 3 h. TNAs with modified morphologies were prepared by a two-step anodization using an aqueous NH4F/ethylene glycol solution. The N-doping concentration (0–9.47 at %) can be varied by controlling N2 gas flow rates between 0 and 500 cc/min during the annealing process. Photocatalytic performance of as-prepared TNAs and N-TNAs was studied by monitoring the methylene blue degradation under visible light (λ ≥ 400 nm) illumination at 120 mW·cm−2. N-TNAs exhibited appreciably enhanced photocatalytic activity as compared to TNAs. The reaction rate constant for N-TNAs (9.47 at % N) reached 0.26 h−1, which was a 125% improvement over that of TNAs (0.115 h−1). The significant enhanced photocatalytic activity of N-TNAs over TNAs is attributed to the synergistic effects of (1) a reduced band gap associated with the introduction of N-doping states to serve as carrier reservoir, and (2) a reduced electron‒hole recombination rate.
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25
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Ma Q, Zhang H, Guo R, Li B, Zhang X, Cheng X, Xie M, Cheng Q. Construction of CuS/TiO2 nano-tube arrays photoelectrode and its enhanced visible light photoelectrocatalytic decomposition and mechanism of penicillin G. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.07.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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26
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Cao J, Song XZ, Kang X, Dai Z, Tan Z. One-pot synthesis of oleic acid modified monodispersed mesoporous TiO2 nanospheres with enhanced visible light photocatalytic performance. ADV POWDER TECHNOL 2018. [DOI: 10.1016/j.apt.2018.05.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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27
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Qiu P, Park B, Choi J, Thokchom B, Pandit AB, Khim J. A review on heterogeneous sonocatalyst for treatment of organic pollutants in aqueous phase based on catalytic mechanism. ULTRASONICS SONOCHEMISTRY 2018; 45:29-49. [PMID: 29705323 DOI: 10.1016/j.ultsonch.2018.03.003] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 03/03/2018] [Accepted: 03/03/2018] [Indexed: 05/25/2023]
Abstract
Heterogeneous sonocatalysis, as an emerging advanced oxidation process (AOP), has shown immense potential in water treatment and been widely demonstrated to remove persistent organic compounds in the past decade. The present article aims to provide a comprehensive review on the development of a heterogeneous catalyst for enhancing the ultrasonic degradation rate of organic pollutants from a viewpoint of sonocatalytic mechanism. The rational design and fundamentals for preparing sonocatalysts are presented in the context of facilitating the heterogeneous nucleation and photo-thermal-catalytic effects as well as considering the mechanical stability and separation capacity of the heterogeneous catalyst. In addition, some new trends, ongoing challenges and possible methods to overcome these challenges are also highlighted and proposed.
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Affiliation(s)
- Pengpeng Qiu
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 136-701, Republic of Korea
| | - Beomguk Park
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 136-701, Republic of Korea
| | - Jongbok Choi
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 136-701, Republic of Korea
| | - Binota Thokchom
- Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Aniruddha B Pandit
- Department of Chemical Engineering, Institute of Chemical Technology, Mumbai 40019, India
| | - Jeehyeong Khim
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 136-701, Republic of Korea.
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28
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Zhou Q, Zhao Q, Xiong W, Li X, Li J, Zeng L. Hollow porous zinc cobaltate nanocubes photocatalyst derived from bimetallic zeolitic imidazolate frameworks towards enhanced gaseous toluene degradation. J Colloid Interface Sci 2018; 516:76-85. [DOI: 10.1016/j.jcis.2018.01.042] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 12/28/2017] [Accepted: 01/11/2018] [Indexed: 10/18/2022]
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29
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Yuan X, Xu Y, Meng H, Han Y, Wu J, Xu J, Zhang X. Fabrication of ternary polyaniline-graphene oxide-TiO2 hybrid films with enhanced activity for photoelectrocatalytic hydrogen production. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.10.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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30
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Fang WH, Zhang L, Zhang J. Synthetic strategies, diverse structures and tuneable properties of polyoxo-titanium clusters. Chem Soc Rev 2018; 47:404-421. [DOI: 10.1039/c7cs00511c] [Citation(s) in RCA: 215] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A review of polyoxo-titanium clusters (PTCs), with an emphasis on synthetic methodologies, diverse structures, tuneable optical properties and potential applications.
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Affiliation(s)
- Wei-Hui Fang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Lei Zhang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Jian Zhang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
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31
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Bouhadoun S, Guillard C, Sorgues S, Hérissan A, Colbeau-Justin C, Dapozze F, Habert A, Maurel V, Herlin-Boime N. Laser synthesized TiO 2-based nanoparticles and their efficiency in the photocatalytic degradation of linear carboxylic acids. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2017; 18:805-815. [PMID: 29152015 PMCID: PMC5678285 DOI: 10.1080/14686996.2017.1379858] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 09/12/2017] [Accepted: 09/12/2017] [Indexed: 06/07/2023]
Abstract
Titanium dioxide nanoparticles were synthesized by laser pyrolysis, their surface and electronic properties were modified by gold and/or nitrogen. These materials were characterized by different techniques like X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR). Time resolved conductivity (TRMC) was used to study the charge separation of electron/hole pairs. Altogether (XPS, EPR, TRMC), the physicochemical characterizations are well correlated with chemical photoactivity of the different samples. Their photocatalytic activity was evaluated for the degradation of linear carboxylic acids (C2-C3) under UV and visible illumination. The decomposition rate of acids was measured, it shows that the modification with gold increases the photoactivity while the presence of nitrogen slows down the process. Such observations are in good agreement with evolution of TRMC signals. A degradation pathway has been determined by identification of intermediate products by chromatography and EPR, results show different intermediate species. In particular EPR confirms the presence of NO2- paramagnetic centers and shows two novel N centered paramagnetic centers. A decrease of the degradation rate is observed with increase of carboxylic acid chain length.
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Affiliation(s)
- Sarah Bouhadoun
- NIMBE, CEA, CNRS, Université Paris Saclay, Gif sur Yvette, France
| | - Chantal Guillard
- Institut de recherche sur la catalyse et l’environnement, IRCELYON, CNRS-University of Lyon, Villeurbanne, France
| | - Sébastien Sorgues
- Laboratoire de chimie physique, UMR 8000-CNRS, Université Paris Saclay, Orsay, France
| | - Alexandre Hérissan
- Laboratoire de chimie physique, UMR 8000-CNRS, Université Paris Saclay, Orsay, France
| | | | - Frederic Dapozze
- Institut de recherche sur la catalyse et l’environnement, IRCELYON, CNRS-University of Lyon, Villeurbanne, France
| | - Aurélie Habert
- NIMBE, CEA, CNRS, Université Paris Saclay, Gif sur Yvette, France
| | - Vincent Maurel
- Univ. Grenoble Alpes, CEA, CNRS, INAC, SyMMES, Grenoble, France
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32
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Fabrication of polyaniline sensitized grey-TiO 2 nanocomposites and enhanced photocatalytic activity. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.04.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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33
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Jiang J, Xing Z, Li M, Li Z, Wu X, Hu M, Wan J, Wang N, Besov AS, Zhou W. In Situ Ti3+/N-Codoped Three-Dimensional (3D) Urchinlike Black TiO2 Architectures as Efficient Visible-Light-Driven Photocatalysts. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b01693] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jiaojiao Jiang
- Department
of Environmental Science, School of Chemistry and Materials Science,
Key Laboratory of Functional Inorganic Material Chemistry, Ministry
of Education of the People’s Republic of China, Heilongjiang University, Harbin 150080, People’s Republic of China
| | - Zipeng Xing
- Department
of Environmental Science, School of Chemistry and Materials Science,
Key Laboratory of Functional Inorganic Material Chemistry, Ministry
of Education of the People’s Republic of China, Heilongjiang University, Harbin 150080, People’s Republic of China
| | - Meng Li
- Department
of Environmental Science, School of Chemistry and Materials Science,
Key Laboratory of Functional Inorganic Material Chemistry, Ministry
of Education of the People’s Republic of China, Heilongjiang University, Harbin 150080, People’s Republic of China
| | - Zhenzi Li
- Department
of Epidemiology and Biostatistics, Harbin Medical University, Harbin 150086, People’s Republic of China
| | - Xiaoyan Wu
- Department
of Epidemiology and Biostatistics, Harbin Medical University, Harbin 150086, People’s Republic of China
| | - Mengqiao Hu
- Department
of Environmental Science, School of Chemistry and Materials Science,
Key Laboratory of Functional Inorganic Material Chemistry, Ministry
of Education of the People’s Republic of China, Heilongjiang University, Harbin 150080, People’s Republic of China
| | - Jiafeng Wan
- Department
of Environmental Science, School of Chemistry and Materials Science,
Key Laboratory of Functional Inorganic Material Chemistry, Ministry
of Education of the People’s Republic of China, Heilongjiang University, Harbin 150080, People’s Republic of China
| | - Nan Wang
- Jiyang College, Zhejiang A&F University, Zhuji 311800, People’s Republic of China
| | - Alexey Sergeevich Besov
- Boreskov Institute
of Catalysis, Pr. Ak. Lavrentyeva 5, Novosibirsk 630090, Russia
- Novosibirsk State
University, Pirogova 2, Novosibirsk 630090, Russia
| | - Wei Zhou
- Department
of Environmental Science, School of Chemistry and Materials Science,
Key Laboratory of Functional Inorganic Material Chemistry, Ministry
of Education of the People’s Republic of China, Heilongjiang University, Harbin 150080, People’s Republic of China
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Maria Magdalane C, Kaviyarasu K, Judith Vijaya J, Jayakumar C, Maaza M, Jeyaraj B. Photocatalytic degradation effect of malachite green and catalytic hydrogenation by UV–illuminated CeO 2 /CdO multilayered nanoplatelet arrays: Investigation of antifungal and antimicrobial activities. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 169:110-123. [DOI: 10.1016/j.jphotobiol.2017.03.008] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 03/07/2017] [Accepted: 03/08/2017] [Indexed: 10/20/2022]
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35
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Batalović K, Bundaleski N, Radaković J, Abazović N, Mitrić M, Silva RA, Savić M, Belošević-Čavor J, Rakočević Z, Rangel CM. Modification of N-doped TiO 2 photocatalysts using noble metals (Pt, Pd) - a combined XPS and DFT study. Phys Chem Chem Phys 2017; 19:7062-7071. [PMID: 28225131 DOI: 10.1039/c7cp00188f] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Nitrogen-doped TiO2 (N-TiO2) is considered as one of the most promising materials for various photocatalytic applications, while noble metals Pd and Pt are known as good catalysts for hydrogen evolution. This work focuses on the determination of structural and electronic modifications of N-TiO2, achieved by noble metal deposition at the surface, as a starting indicator for potential applications. We focus on the properties of easily synthesized nanocrystalline nitrogen-doped anatase TiO2, modified by depositing small amounts of Pd (0.05 wt%) and Pt (0.10 wt%), aiming to demonstrate efficient enhancement of optical properties. The chemical states of dopants are studied in detail, using X-ray photoemission spectroscopy, to address the potential of N-TiO2 to act as a support for metallic nanoparticles. DFT calculations are used to resolve substitutional from interstitial nitrogen doping of anatase TiO2, as well as to study the combined effect of nitrogen doping and oxygen vacancy formation. Based on the binding energies calculated using Slater's transition state theory, dominant contribution to the N 1s binding energy at 399.8 eV is ascribed to interstitially doped nitrogen in anatase TiO2. Given that both structure and photocatalytic properties depend greatly on the synthesis procedure, this work contributes further to establishing correlation between the structure and optical properties of the noble metal modified N-TiO2 system.
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Affiliation(s)
- K Batalović
- Institute of Nuclear Sciences Vinča, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia.
| | - N Bundaleski
- Institute of Nuclear Sciences Vinča, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia.
| | - J Radaković
- Institute of Nuclear Sciences Vinča, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia.
| | - N Abazović
- Institute of Nuclear Sciences Vinča, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia.
| | - M Mitrić
- Institute of Nuclear Sciences Vinča, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia.
| | - R A Silva
- LNEG, National Laboratory for Energy and Geology, Paço do Lumiar 22, 1649-038 Lisbon, Portugal
| | - M Savić
- Institute of Nuclear Sciences Vinča, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia.
| | - J Belošević-Čavor
- Institute of Nuclear Sciences Vinča, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia.
| | - Z Rakočević
- Institute of Nuclear Sciences Vinča, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia.
| | - C M Rangel
- LNEG, National Laboratory for Energy and Geology, Paço do Lumiar 22, 1649-038 Lisbon, Portugal
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36
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Wang F, Cao Y, Wei S, Zhou Y. Enhanced visible-light response of metal-free doped bulk h-BN as potential efficient photocatalyst: a computational study. J Mol Model 2017; 23:23. [DOI: 10.1007/s00894-016-3198-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 12/16/2016] [Indexed: 10/20/2022]
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37
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CNTs-Modified Nb 3O 7F Hybrid Nanocrystal towards Faster Carrier Migration, Lower Bandgap and Higher Photocatalytic Activity. Sci Rep 2017; 7:39973. [PMID: 28059123 PMCID: PMC5216398 DOI: 10.1038/srep39973] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 11/30/2016] [Indexed: 11/09/2022] Open
Abstract
Novel semiconductor photocatalysts have been the research focus and received much attention in recent years. The key issues for novel semiconductor photocatalysts are to effectively harvest solar energy and enhance the separation efficiency of the electron-hole pairs. In this work, novel Nb3O7F/CNTs hybrid nanocomposites with enhanced photocatalytic activity have been successfully synthesized by a facile hydrothermal plus etching technique. The important finding is that appropriate pH values lead to the formation of Nb3O7F nanocrystal directly. A general strategy to introdue interaction between Nb3O7F and CNTs markedly enhances the photocatalytic activity of Nb3O7F. Comparatively, Nb3O7F/CNTs nanocomposites exhibit higher photodegradation efficiency and faster photodegradation rate in the solution of methylene blue (MB) under visible-light irradiation. The higher photocatalytic activity may be attributed to more exposed active sites, higher carrier migration and narrower bandgap because of good synergistic effect. The results here may inspire more engineering, new design and facile fabrication of novel photocatalysts with highly photocatalytic activity.
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38
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Nayyar IH, Chamberlin SE, Kaspar TC, Govind N, Chambers SA, Sushko PV. Effect of doping and chemical ordering on the optoelectronic properties of complex oxides: Fe 2O 3-V 2O 3 solid solutions and hetero-structures. Phys Chem Chem Phys 2017; 19:1097-1107. [PMID: 27942648 DOI: 10.1039/c6cp06087k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electronic and optical properties of α-(Fe1-xVx)2O3 at low (x = 0.04) and high (x = 0.5) doping levels are investigated using a combination of periodic and embedded cluster approaches, and time-dependent density functional theory. At low V concentrations the onset of the optical absorption is ∼0.5 eV (i.e., nearly 1.6 eV lower than that in pure α-Fe2O3) and corresponds to the electron transitions from V 3d to Fe 3d* orbitals. At high V concentrations, optical absorption energies and intensities are sensitive to specific arrangements of Fe and V atoms and their spin configuration that determine Fe-V hybridization. The onset of the lowest inter-vanadium absorption band in the case of Fe2O3/V2O3 hetero-structures is as low as ∼0.3 eV and the corresponding peak is at ∼0.7 eV. In contrast, in the case of solid solutions this peak has lower intensity and is shifted to higher energy (∼1.2 eV). Analysis of the orbital character of electronic excitation suggests that Fe2O3/V2O3 hetero-structures absorb light much more effectively than random alloys, thus promoting efficient photo-induced carrier generation. These predictions can be tested in α-(Fe1-xVx)2O3 thin films synthesized with well-controlled spatial distribution of Fe and V species.
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Affiliation(s)
- Iffat H Nayyar
- Physical Sciences Division, Physical & Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA.
| | - Sara E Chamberlin
- Physical Sciences Division, Physical & Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA.
| | - Tiffany C Kaspar
- Physical Sciences Division, Physical & Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA.
| | - Niranjan Govind
- Environmental Molecular Division, Earth and Biological Sciences Directorate, Richland, WA 99354, USA
| | - Scott A Chambers
- Physical Sciences Division, Physical & Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA.
| | - Peter V Sushko
- Physical Sciences Division, Physical & Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA.
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39
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Sushma C, Kumar SG. C–N–S tridoping into TiO2matrix for photocatalytic applications: observations, speculations and contradictions in the codoping process. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00189d] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
C–N–S-tridoped TiO2: behind and beyond the codoping process.
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Affiliation(s)
- C. Sushma
- Department of Chemistry
- School of Engineering and Technology
- CMR University
- Bangalore-562149
- India
| | - S. Girish Kumar
- Department of Chemistry
- School of Engineering and Technology
- CMR University
- Bangalore-562149
- India
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40
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Khore SK, Tellabati NV, Apte SK, Naik SD, Ojha P, Kale BB, Sonawane RS. Green sol–gel route for selective growth of 1D rutile N–TiO2: a highly active photocatalyst for H2 generation and environmental remediation under natural sunlight. RSC Adv 2017. [DOI: 10.1039/c7ra01648d] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report selective growth of N–TiO2 1D nanorods using a green aqueous sol–gel method followed by hydrothermal treatment.
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Affiliation(s)
- Supriya K. Khore
- Centre for Materials for Electronic Technology
- Government of India
- Pune 411008
- India
| | - Navya Vani Tellabati
- Centre for Materials for Electronic Technology
- Government of India
- Pune 411008
- India
| | - Sanjay K. Apte
- Centre for Materials for Electronic Technology
- Government of India
- Pune 411008
- India
| | - Sonali D. Naik
- Centre for Materials for Electronic Technology
- Government of India
- Pune 411008
- India
| | - Prashant Ojha
- Naval Materials Research Laboratory (NMRL)
- Ministry of Defence
- Ambernath 421506
- India
| | - Bharat B. Kale
- Centre for Materials for Electronic Technology
- Government of India
- Pune 411008
- India
| | - Ravindra S. Sonawane
- Centre for Materials for Electronic Technology
- Government of India
- Pune 411008
- India
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41
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Nie C, Dong J, Sun P, Yan C, Wu H, Wang B. An efficient strategy for full mineralization of an azo dye in wastewater: a synergistic combination of solar thermo- and electrochemistry plus photocatalysis. RSC Adv 2017. [DOI: 10.1039/c7ra05797k] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
An efficient strategy for full mineralization of azo dye in wastewater.
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Affiliation(s)
- Chunhong Nie
- Institute of New Energy Chemistry and Environmental Science
- College of Chemistry and Chemical Engineering
- Northeast Petroleum University
- Daqing
- China
| | - Jing Dong
- Institute of New Energy Chemistry and Environmental Science
- College of Chemistry and Chemical Engineering
- Northeast Petroleum University
- Daqing
- China
| | - Pingping Sun
- Institute of New Energy Chemistry and Environmental Science
- College of Chemistry and Chemical Engineering
- Northeast Petroleum University
- Daqing
- China
| | - Chao Yan
- Institute of New Energy Chemistry and Environmental Science
- College of Chemistry and Chemical Engineering
- Northeast Petroleum University
- Daqing
- China
| | - Hongjun Wu
- Institute of New Energy Chemistry and Environmental Science
- College of Chemistry and Chemical Engineering
- Northeast Petroleum University
- Daqing
- China
| | - Baohui Wang
- Institute of New Energy Chemistry and Environmental Science
- College of Chemistry and Chemical Engineering
- Northeast Petroleum University
- Daqing
- China
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42
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Lei Y, Lu X. Reversing the Photocatalytic Activity Orders of Anatase TiO 2Facets by Surface Treatment. ChemistrySelect 2016. [DOI: 10.1002/slct.201601325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yanqiang Lei
- Department of Physics and Materials Science; City University of Hong Kong; Hong Kong SAR
| | - Xiaoqing Lu
- College of Science; China University of Petroleum, Qingdao; Shandong 266580 People's Republic of China
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43
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Nursam NM, Tan JZY, Wang X, Li W, Xia F, Caruso RA. Mesoporous Nitrogen-Modified Titania with Enhanced Dye Adsorption Capacity and Visible Light Photocatalytic Activity. ChemistrySelect 2016. [DOI: 10.1002/slct.201601234] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Natalita M. Nursam
- Particulate Fluids Processing Centre, School of Chemistry; University of Melbourne; Melbourne, VIC 3010 Australia
- CSIRO Manufacturing; Clayton, VIC 3168 Australia
- Research Center for Electronics and Telecommunication; Indonesian Institute of Science; Cisitu, Bandung 40135 Indonesia
| | - Jeannie Z. Y. Tan
- Particulate Fluids Processing Centre, School of Chemistry; University of Melbourne; Melbourne, VIC 3010 Australia
- CSIRO Manufacturing; Clayton, VIC 3168 Australia
| | | | - Wei Li
- CSIRO Manufacturing; Clayton, VIC 3168 Australia
- International Iberian Nanotechnology Laboratory (INL); Avenida Mestre José Veiga Braga 4715-330 Portugal
| | - Fang Xia
- CSIRO Manufacturing; Clayton, VIC 3168 Australia
- School of Engineering and Information Technology; Murdoch University; Murdoch, Western Australia 6150 Australia
| | - Rachel A. Caruso
- Particulate Fluids Processing Centre, School of Chemistry; University of Melbourne; Melbourne, VIC 3010 Australia
- CSIRO Manufacturing; Clayton, VIC 3168 Australia
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44
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C-doped mesoporous anatase TiO 2 comprising 10 nm crystallites. J Colloid Interface Sci 2016; 476:1-8. [PMID: 27179173 DOI: 10.1016/j.jcis.2016.01.080] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 01/27/2016] [Accepted: 01/30/2016] [Indexed: 11/30/2022]
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45
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Highly Crystallized C-Doped Mesoporous Anatase TiO2 with Visible Light Photocatalytic Activity. Catalysts 2016. [DOI: 10.3390/catal6080117] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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46
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Fernández L, Esteves VI, Cunha Â, Schneider RJ, Tomé JP. Photodegradation of organic pollutants in water by immobilized porphyrins and phthalocyanines. J PORPHYR PHTHALOCYA 2016. [DOI: 10.1142/s108842461630007x] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
New methods for water treatment are required as a result from an increasing awareness in the reduction of the pollution impact in the environment. In the perspective of the photo-oxidation of organic pollutants present in water, the principal incentive for the preparation of heterogeneous photocatalysts is their easy recovery from the reaction mixture, which allows their reuse in successive runs, minimizing the loss of their original photocatalytic properties. Different types of supports can be used in the immobilization of photoactive species, such as porphyrins (Pors) and phthalocyanines (Pcs). This mini-review will consider the different methodologies for the immobilization of Pors and Pcs and their photocatalytic performance in the photodegradation of organic pollutants in water, addressing also their recycling ability in successive water treatments.
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Affiliation(s)
- Lucía Fernández
- QOPNA, and Department of Chemistry, University of Aveiro, Aveiro, 3810-193, Portugal
- CESAM and Department of Chemistry, University of Aveiro, Aveiro, 3810-193, Portugal
- Department of Biology & CESAM, University of Aveiro, Aveiro, 3810-193, Portugal
| | - Valdemar I. Esteves
- CESAM and Department of Chemistry, University of Aveiro, Aveiro, 3810-193, Portugal
| | - Ângela Cunha
- Department of Biology & CESAM, University of Aveiro, Aveiro, 3810-193, Portugal
| | - Rudolf J. Schneider
- BAM Federal Institute for Materials Research and Testing, Berlin, D-12205, Germany
| | - João P.C. Tomé
- QOPNA, and Department of Chemistry, University of Aveiro, Aveiro, 3810-193, Portugal
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
- Department of Organic and Macromolecular Chemistry, Ghent University, Gent, B-9000, Belgium
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47
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Enhanced sunlight photocatalytic activity and recycled Ag–N co-doped TiO2 supported by expanded graphite C/C composites for degradation of organic pollutants. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-015-2385-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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48
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Zargari S, Rahimi R, Yousefi A. An efficient visible light photocatalyst based on tin porphyrin intercalated between TiO2–graphene nanosheets for inactivation of E. coli and investigation of charge transfer mechanism. RSC Adv 2016. [DOI: 10.1039/c5ra19927a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Tin porphyrin intercalated between the TiO2–grphene nanocomposite. The inactivation of E. coli over the prepared compound was significantly increased via the interaction of tin porphyrin between the TiO2–graphene nanocomposite.
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Affiliation(s)
- S. Zargari
- Bioinorganic Chemistry Research Laboratory
- Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - R. Rahimi
- Bioinorganic Chemistry Research Laboratory
- Department of Chemistry
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
| | - A. Yousefi
- Biotechnology Research Laboratory
- School of Chemical Engineering
- Iran University of Science and Technology
- Tehran 16846-13114
- Iran
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49
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Heng H, Gan Q, Meng P, Liu X. H3PW12O40/TiO2–In2O3: a visible light driven type-II heterojunction photocatalyst for the photocatalytic degradation of imidacloprid. RSC Adv 2016. [DOI: 10.1039/c6ra10729j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
H3PW12O40/TiO2–In2O3, a visible light driven type-II heterojunction photocatalyst, displays enhanced photocatalytic activity for the degradation of imidacloprid.
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Affiliation(s)
- Huimin Heng
- College of Science
- China Agricultural University
- Beijing 100193
- China
| | - Qiang Gan
- State Key Laboratory of Explosion Science and Technology
- Beijing Institute of Technology
- Beijing 100081
- China
| | - Pengcheng Meng
- College of Science
- China Agricultural University
- Beijing 100193
- China
| | - Xia Liu
- College of Science
- China Agricultural University
- Beijing 100193
- China
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50
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Sun M, Fang Y, Sun S, Wang Y. Surface co-modification of TiO2 with N doping and Ag loading for enhanced visible-light photoactivity. RSC Adv 2016. [DOI: 10.1039/c5ra23593f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A composite of N-doped TiO2 with Ag loading (Ag/N-TiO2) was successfully synthesized by a facile in situ calcination process using titanium nitride (TiN) and silver nitrate (AgNO3) as the starting materials.
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Affiliation(s)
- Mingxuan Sun
- School of Materials Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Yalin Fang
- School of Materials Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Shanfu Sun
- School of Materials Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
| | - Ying Wang
- School of Materials Engineering
- Shanghai University of Engineering Science
- Shanghai 201620
- China
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