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Wang Y, He X, Gao P, Feng L, Zhang L. Enhanced photocatalytic gaseous formaldehyde degradation using N-CQDs/OVs-TiO 2 composite under visible light: Unraveling the synergistic effects of N-CQDs and oxygen vacancies. ENVIRONMENTAL RESEARCH 2024; 247:118301. [PMID: 38272291 DOI: 10.1016/j.envres.2024.118301] [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: 12/08/2023] [Revised: 01/20/2024] [Accepted: 01/22/2024] [Indexed: 01/27/2024]
Abstract
Limited utilization of photogenerated charge carriers in titanium dioxide under visible light have hinder its application development. To address this challenge, a novel N-doped carbon quantum dots (N-CQDs) and oxygen vacancies (OVs) synergistically decorated on TiO2 (P25) was synthesized through a facile one-step hydrothermal method. Under visible light irradiation, the first order reaction rate constants of formaldehyde (HCHO) photocatalytic oxidation by OVs-TiO2 and N-CQDs/OVs-TiO2 was significantly higher than that of pristine P25, with 10.1 and 16.7 folds increase, respectively. Characterization results confirmed the generation of OVs on the surface of N-CQDs/TiO2 composite. The optical and electrochemical experiments suggested the electron capture center effect of OVs and the properties of N-CQDs in unique up-converted photoluminescence, efficient charge separation, as well as significant adsorption in visible light region. In addition, the work function also clarified that photoelectrons could transfer from N-CQDs to OVs-TiO2. Furthermore, different relative humidity and electron paramagnetic resonance (EPR) experiments demonstrated that the hydroxyl radical (•OH) was the dominant reactive radical in HCHO photodegradation. The •O2- could also enhance the photodegradation efficiency of HCHO. This work provides an in-depth understanding on the complementary roles of N-CQDs and OVs and is helpful for designing metallic oxide photocatalysts for volatile organic compounds removal.
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Affiliation(s)
- Yang Wang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Xiaoqing He
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Peng Gao
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
| | - Li Feng
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Liqiu Zhang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
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2
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Wang Z, Cheng Y, Wang C, Guo R, You J, Zhang H. Optimizing the performance of Fe-based metal-organic frameworks in photo-Fenton processes: Mechanisms, strategies and prospects. CHEMOSPHERE 2023; 339:139673. [PMID: 37536536 DOI: 10.1016/j.chemosphere.2023.139673] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/13/2023] [Accepted: 07/27/2023] [Indexed: 08/05/2023]
Abstract
Contaminants in water pose a significant challenge as they are harmful and difficult to treat using conventional methods. Therefore, various new methods have been proposed to degrade organic pollutants in water, among which the photo-Fenton process is considered promising. In recent years, Fe-based metal-organic frameworks (Fe-MOFs) have gained attention and found applications in different fields due to their cost-effectiveness, non-toxic nature, and unique porous structure. Many researchers have applied Fe-MOFs to the photo-Fenton process in recent years and achieved good results. This review focuses on describing different strategies for enhancing the performance of Fe-MOFs in the photo-Fenton process. Also, the mechanism of MOF in the photo-Fenton process is described in detail. Finally, prospects for the application of Fe-MOFs in photo-Fenton systems for the treatment of organic pollutants in water are presented. This study provides information and ideas for researchers to use Fe-MOFs to remove organic pollutants from water by photo-Fenton process.
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Affiliation(s)
- Zhaobo Wang
- School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China
| | - Ying Cheng
- School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China
| | - Chen Wang
- School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China
| | - Rui Guo
- School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China; Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province, School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, China.
| | - Junhua You
- School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, 110870, China
| | - Hangzhou Zhang
- Department of Orthopedics, Joint Surgery and Sports Medicine, First Affiliated Hospital of China Medical University, Shenyang, 110001, China.
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3
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Karaca M, Eroğlu Z, Açışlı Ö, Metin Ö, Karaca S. Boosting Tetracycline Degradation with an S-Scheme Heterojunction of N-Doped Carbon Quantum Dots-Decorated TiO 2. ACS OMEGA 2023; 8:26597-26609. [PMID: 37521662 PMCID: PMC10373195 DOI: 10.1021/acsomega.3c03532] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 06/28/2023] [Indexed: 08/01/2023]
Abstract
N-doped carbon quantum dots (N-CQDs) derived from the Rumex crispus L. plant were incorporated into TiO2 via a facile hydrothermal method. As-prepared materials were characterized and used in the photocatalytic tetracycline (TC) degradation under UVA light irradiation by examining several operational parameters involving the N-CQDs amount, initial TC concentration, pH, and photocatalytic reaction time. XRD analysis revealed the conversion of the rutile phase to the anatase phase after the incorporation of N-CQDs into the TiO2 structure. The results revealed that the N-CQDs/TiO2 photocatalysts demonstrated the highest efficiency in TC degradation compared to other processes of adsorption, photolysis (UVA), and photocatalysis with TiO2 (TiO2/UVA). Under optimized conditions, 10 mg/L TC at pH 5.15 with 0.2 g/L N-CQDs/TiO2 catalyst showed 97.7% photocatalytic degradation for 120 min under UVA irradiation. The formation of an S-scheme heterojunction between N-CQDs and TiO2 provided enhanced charge separation and strong redox capability, causing significant improvement in the photocatalytic performance of N-CQDs/TiO2. Trapping experiments showed that O2•- and h+ are the predominant reactive species for the TC elimination in an aqueous solution.
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Affiliation(s)
- Melike Karaca
- Department
of Chemistry, Faculty of Science, Atatürk
University, 25240 Erzurum, Turkey
| | - Zafer Eroğlu
- Department
of Chemistry, College of Sciences, Koç
University, Sarıyer, 34450 Istanbul, Turkey
| | - Özkan Açışlı
- Department
of Chemistry, Faculty of Science, Atatürk
University, 25240 Erzurum, Turkey
| | - Önder Metin
- Department
of Chemistry, College of Sciences, Koç
University, Sarıyer, 34450 Istanbul, Turkey
- Koç
University Surface Science and Technology Center (KUYTAM), Sarıyer, 34450 Istanbul, Turkey
| | - Semra Karaca
- Department
of Chemistry, Faculty of Science, Atatürk
University, 25240 Erzurum, Turkey
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4
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Hindi SS, Sabir JSM, Dawoud UM, Ismail IM, Asiry KA, Mirdad ZM, Abo-Elyousr KA, Shiboob MH, Gabal MA, Albureikan MOI, Alanazi RA, Ibrahim OHM. Nanocellulose-Based Passivated-Carbon Quantum Dots (P-CQDs) for Antimicrobial Applications: A Practical Review. Polymers (Basel) 2023; 15:2660. [PMID: 37376306 DOI: 10.3390/polym15122660] [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: 03/03/2023] [Revised: 05/08/2023] [Accepted: 05/16/2023] [Indexed: 06/29/2023] Open
Abstract
Passivated-carbon quantum dots (P-CQDs) have been attracting great interest as an antimicrobial therapy tool due to their bright fluorescence, lack of toxicity, eco-friendly nature, simple synthetic schemes, and possession of photocatalytic functions comparable to those present in traditional nanometric semiconductors. Besides synthetic precursors, CQDs can be synthesized from a plethora of natural resources including microcrystalline cellulose (MCC) and nanocrystalline cellulose (NCC). Converting MCC into NCC is performed chemically via the top-down route, while synthesizing CODs from NCC can be performed via the bottom-up route. Due to the good surface charge status with the NCC precursor, we focused in this review on synthesizing CQDs from nanocelluloses (MCC and NCC) since they could become a potential source for fabricating carbon quantum dots that are affected by pyrolysis temperature. There are several P-CQDs synthesized with a wide spectrum of featured properties, namely functionalized carbon quantum dots (F-CQDs) and passivated carbon quantum dots (P-CQDs). There are two different important P-CQDs, namely 2,2'-ethylenedioxy-bis-ethylamine (EDA-CQDs) and 3-ethoxypropylamine (EPA-CQDs), that have achieved desirable results in the antiviral therapy field. Since NoV is the most common dangerous cause of nonbacterial, acute gastroenteritis outbreaks worldwide, this review deals with NoV in detail. The surficial charge status (SCS) of the P-CQDs plays an important role in their interactions with NoVs. The EDA-CQDs were found to be more effective than EPA-CQDs in inhibiting the NoV binding. This difference may be attributed to their SCS as well as the virus surface. EDA-CQDs with surficial terminal amino (-NH2) groups are positively charged at physiological pH (-NH3+), whereas EPA-CQDs with surficial terminal methyl groups (-CH3) are not charged. Since the NoV particles are negatively charged, they are attracted to the positively charged EDA-CQDs, resulting in enhancing the P-CQDs concentration around the virus particles. The carbon nanotubes (CNTs) were found to be comparable to the P-CQDs in the non-specific binding with NoV capsid proteins, through complementary charges, π-π stacking, and/or hydrophobic interactions.
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Affiliation(s)
- Sherif S Hindi
- Department of Agriculture, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Jamal S M Sabir
- Department of Biological Sciences, Faculty of Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Uthman M Dawoud
- Department of Chemical and Materials Engineering, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Iqbal M Ismail
- Department of Chemistry, Faculty of Science, Center of Excellence in Environmental Studies, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Khalid A Asiry
- Department of Agriculture, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Zohair M Mirdad
- Department of Agriculture, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Kamal A Abo-Elyousr
- Department of Agriculture, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
- Plant Pathology Department, Faculty of Agriculture, Assiut University, Assiut 71526, Egypt
| | - Mohamed H Shiboob
- Department of Environment, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Mohamed A Gabal
- Department of Chemistry, Faculty of Science, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Mona Othman I Albureikan
- Department of Biological Sciences, Faculty of Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Rakan A Alanazi
- Department of Agriculture, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
| | - Omer H M Ibrahim
- Department of Agriculture, Faculty of Environmental Sciences, King Abdullaziz University (KAU), P.O. Box 80208, Jeddah 21589, Saudi Arabia
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Tai Y, Han B, Liu Z, Yang X, Fu W, Gao R, Niu B, Liu X, Zhang Y, Liu Q. Novel core–shell heterojunction photocatalytic wire mesh for efficient ciprofloxacin degradation under visible light. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Liu X, Miao X, Zhang X, Wang Y, Zhu T. Influence of crystal planes exposure ratio on photocatalytic and antimicrobial properties of m-BiVO4 under LED visible light. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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7
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Yadav N, Gaikwad RP, Mishra V, Gawande MB. Synthesis and Photocatalytic Applications of Functionalized Carbon Quantum Dots. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nisha Yadav
- Amity Institute of Click Chemistry Research and Studies, Amity University, Noida, Uttar Pradesh-201313, India
| | - Rahul P. Gaikwad
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai - Marathwada Campus, Jalna-431203, India
| | - Vivek Mishra
- Amity Institute of Click Chemistry Research and Studies, Amity University, Noida, Uttar Pradesh-201313, India
| | - Manoj B. Gawande
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai - Marathwada Campus, Jalna-431203, India
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8
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Zhang Z, Wang Y, Gao P, Feng L, Zhang L, Liu Y, Du Z. Visible-light-driven photocatalytic degradation of ofloxacin by BiOBr nanocomposite modified with oxygen vacancies and N-doped CQDs: Enhanced photodegradation performance and mechanism. CHEMOSPHERE 2022; 307:135976. [PMID: 35944686 DOI: 10.1016/j.chemosphere.2022.135976] [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: 05/06/2022] [Revised: 06/17/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
The rapid recombination of photogenerated carriers and weak light absorption capacity are two major challenges for bismuth-based photocatalysts. Here, N-CQDs/BiO1-xBr micro-flower photocatalysts with the visible-light activity were fabricated through the ethylene glycol solvothermal method for the first time, and oxygen vacancies (OVs) and N-doped carbon quantum dots (N-CQDs) were simultaneously introduced on the surface of BiOBr. OVs were introduced to form defective BiOBr (BiO1-xBr). N-CQDs and BiO1-xBr formed a strong binding effect. Then, the composition, morphology, crystal structure and photoelectric property of photocatalysts were studied, and the mechanism and pathway of ofloxacin (OFL) photodegradation were studied. N-CQDs/BiO1-xBr-4 was a micro-flower composed of nanosheets with a thickness of about 60 nm, this structure produced multiple light reflections. Photoelectrochemical analysis confirmed that the synergistic effect of OVs and N-CQDs significantly promoted the electron-hole separation (3 times vs BiOBr) and enhanced the light absorption range (Eg = 2.96 eV vs 3.24 eV). Meanwhile, the removal rate of OFL by N-CQDs/BiO1-xBr-4 was 6 times higher than that by BiOBr (Kobs of N-CQDs/BiO1-xBr-4 was 32 times higher than that of BiOBr). Electron spin resonances analysis and radical quenching experiments showed that ·O2- and h+ played dominant roles in the OFL photodegradation system, and their contribution rates were 89.84% and 70.31%, respectively. There were main degradation pathways for OFL, including oxidation, dealkylation, hydroxylation and decarboxylation. This study explored the synergistic and complementary effects between OVs and N-CQDs, and provided a promising strategy for the photodegradation of toxic antibiotics by visible-light-driven photocatalysts.
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Affiliation(s)
- Zijing Zhang
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China
| | - Yang Wang
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China
| | - Peng Gao
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China
| | - Li Feng
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China.
| | - Liqiu Zhang
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China.
| | - Yongze Liu
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China
| | - Ziwen Du
- Beijing Key Laboratory for Source Control Technology of Water Pollution, Engineering Research Center for Water Pollution Source Control and Eco-remediation, Beijing Forestry University, Beijing, 100083, China
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9
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Liu M, Qin H, Xu H, Zou Z, Deng C, Xia D, Yu Q, Zheng Y, Chen D. Confine activation peroxymonosulfate by surface oxygen vacancies of BiO1-Cl to boost its utilization rate. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Highly efficient As(III) removal through simultaneous oxidation and adsorption by N-CQDs modified MIL-53(Fe). Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120409] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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11
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González-González RB, Sharma A, Parra-Saldívar R, Ramirez-Mendoza RA, Bilal M, Iqbal HMN. Decontamination of emerging pharmaceutical pollutants using carbon-dots as robust materials. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:127145. [PMID: 34547693 DOI: 10.1016/j.jhazmat.2021.127145] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/05/2021] [Accepted: 09/03/2021] [Indexed: 02/08/2023]
Abstract
Environmental pollution is a critical issue that requires proper measures to maintain environmental health in a sustainable and effective manner. The growing persistence of several active pharmaceutical residues, such as antibiotics like tetracycline, and anti-inflammatory drugs like diclofenac in water matrices is considered an issue of global concern. Numerous sewage/drain waste lines from the domestic and pharmaceutical sector contain an array of toxic compounds, so-called "emerging pollutants" and possess adverse effects on entire living ecosystem and damage its biodiversity. Therefore, effective solution and preventive measures are urgently required to sustainably mitigate and/or remediate pharmaceutically active emerging pollutants from environmental matrices. In this context, herein, the entry pathways of the pharmaceutical waste into the environment are presented, through the entire lifecycle of a pharmaceutical product. There is no detailed review available on carbon-dots (CDs) as robust materials with multifunctional features that support sustainable mitigation of emerging pollutants from water matrices. Thus, CDs-based photocatalysts are emerging as an efficient alternative for decontamination by pharmaceutical pollutants. The addition of CDs on photocatalytic systems has an important role in their performance, mainly because of their up-conversion property, transfer photoinduced electron capacities, and efficient separation of electrons and holes. In this review, we analyze the strategies followed by different researchers to optimize the photodegradation of various pharmaceutical pollutants. In this manner, the effect of different parameters such as pH, the dosage of photocatalyst, amount of carbon dots, and initial pollutant concentration, among others are discussed. Finally, current challenges are presented from a pollution prevention perspective and from CDs-based photocatalytic remediation perspective, with the aim to suggest possible research directions.
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Affiliation(s)
| | - Ashutosh Sharma
- Tecnologico de Monterrey, School of Engineering and Sciences, Centre of Bioengineering, Campus Queretaro, Av. Epigmenio González 500, Fracc, SanPablo, CP 76130 Queretaro, Mexico
| | | | | | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico.
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12
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Liu X, Li X, Zhu L, Wang X. Preparation of molecularly imprinted Ag-TiO 2 for photocatalytic removal of ethyl paraben. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:10308-10318. [PMID: 34515930 DOI: 10.1007/s11356-021-16168-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023]
Abstract
Herein, MI-Ag-TiO2 was prepared by one-step sol-gel method, and its photocatalytic and characterization performance were fully analyzed. Within 120 min, the photocatalytic degradation rate of MI-Ag-TiO2 to ethyl paraben was 93.4%, which was 1.48 times that of naked TiO2. Compared with Ag-TiO2, MI-TiO2, and TiO2, the photocatalytic selectivity of MI-Ag-TiO2 to target pollutants increased by 24.5%, 31.5%, and 100%, respectively. Hence, the one-step molecular imprinting method can simply and quickly improve the photocatalytic performance of TiO2. This research may help to further promote the practical application of molecularly imprinted photocatalysts in the future.
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Affiliation(s)
- Xian Liu
- School of Urban Construction, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Xiaoya Li
- School of Urban Construction, Wuhan University of Science and Technology, Wuhan, 430065, China
| | - Lei Zhu
- School of Urban Construction, Wuhan University of Science and Technology, Wuhan, 430065, China.
| | - Xun Wang
- School of Urban Construction, Wuhan University of Science and Technology, Wuhan, 430065, China.
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13
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Abdi J, Hadipoor M, Hadavimoghaddam F, Hemmati-Sarapardeh A. Estimation of tetracycline antibiotic photodegradation from wastewater by heterogeneous metal-organic frameworks photocatalysts. CHEMOSPHERE 2022; 287:132135. [PMID: 34492416 DOI: 10.1016/j.chemosphere.2021.132135] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/25/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
In this work, the potential ability of various modern and powerful machine learning methods such as Categorical Boosting (CatBoost), Light Gradient Boosting Machine (LightGBM), Extreme Gradient Boosting (XGBoost), Adaptive Boosting (AdaBoost), Gradient-Boosted Decision Trees (GBDT), Extra Tree (ET), Decision Trees (DT), and Random Forest (RF) were investigated to estimate tetracycline (TC) photodegradation from wastewater by 10 different metal-organic frameworks (MOFs). A comprehensive databank was gathered, including 374 data points from the photodegradation percentage of MOFs in various practical conditions. The inputs of the employed models were chosen as catalyst dosage, antibiotic concentration, Illumination time, solution pH, and specific surface area and pore volume of the investigated MOFs, and the output was TC degradation efficiency. Different statistical criteria were calculated for the validation of the developed models. Average absolute percent relative error (AAPRE) and standard deviation error (STD) values of 1.19% and 0.0431, 3.07% and 0.0628, 2.88% and 0.0751, 2.86% and 0.1304, 8.73% and 0.2751, 4.24% and 0.1024, 2.83% and 0.0934, and 11.56% and 0.4459 were obtained for CatBoost, LightGBM, XGBoost, AdaBoost, GBDT, ET, DT, and RF approaches, respectively. Among all implemented models, the CatBoost was found to be the most trustable model. Moreover, this model followed the expected trends of the TC degradation process with variation of catalyst dosage, initial TC concentration, and reaction pH. The developed CatBoost model predicted the removal of TC by MOFs accurately, which proved the capability of this approach in solving complex problems with numerous data points and its straightforwardness and cost-effectiveness for environmental applications.
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Affiliation(s)
- Jafar Abdi
- Faculty of Chemical and Materials Engineering, Shahrood University of Technology, 3619995161, Shahrood, Iran.
| | - Masoud Hadipoor
- Department of Petroleum Engineering, Ahwaz Faculty of Petroleum Engineering, Petroleum University of Technology (PUT), Ahwaz, Iran
| | - Fahimeh Hadavimoghaddam
- Department of Oil Field Development and Operation, Faculty of Oil and Gas Field Development, Gubkin National University of Oil and Gas, Moscow, 119991, Russia
| | - Abdolhossein Hemmati-Sarapardeh
- Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran; College of Construction Engineering, Jilin University, Changchun, 130600, China.
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14
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Qi K, Song M, Xie X, Wen Y, Wang Z, Wei B, Wang Z. CQDs/biochar from reed straw modified Z-scheme MgIn 2S 4/BiOCl with enhanced visible-light photocatalytic performance for carbamazepine degradation in water. CHEMOSPHERE 2022; 287:132192. [PMID: 34517240 DOI: 10.1016/j.chemosphere.2021.132192] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/27/2021] [Accepted: 09/05/2021] [Indexed: 06/13/2023]
Abstract
The application of environmental-friendly and sustainable green materials in constructing photocatalysts to degrade pharmaceuticals and personal care products (PPCPs) attracts more attention. Herein, biochar (BC) or biomass carbon quantum dots (CQDs) were used to modify MgIn2S4/BiOCl (MB) heterojunction photocatalyst with Z-scheme structure, and improved the photocatalytic degradation performance for carbamazepine (CBZ) in the aqueous solution. Both BC and CQDs could form electron transfer interface with MB heterojunction, resulting in the photodegradation rate of MgIn2S4/BiOCl/CQDs (MBC, 96.43%) and MgIn2S4/BiOCl/BC (MBB, 88.09%) to CBZ within 120 min visible-light irradiation, which were significantly higher than that of MB (65.84%). Moreover, photoelectrochemical and photoluminescence tests verified that CQDs could act as a bridge for storing and transferring electrons in the entire Z-scheme system. Thence, compared with MBB, MBC could produce more •OH and •O2- under the visible light, which was indicated by the results of radical quenching experiments and electron paramagnetic resonance. Interestingly, under the natural sunlight, the photocatalytic performance of MBC to CBZ was even better than under laboratory conditions. In addition, the TOC removal efficiencies of MBB and MBC could reach 85.09% and 93.79% respectively, and ECOSAR program was utilized to further evaluate the eco-toxicity of CBZ and the intermediates towards fish, daphnid, and green algae, indicating that the photocatalytic process involving MBB and MBC showed outstanding toxicity reduction performance. Finally, compared with other composites, MBB and MBC showed higher photocatalytic performance and lower energy consumption, which would provide a green strategy for biochar materials in the photocatalytic treatment of PPCPs in water.
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Affiliation(s)
- Kemin Qi
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Mengxi Song
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Xiaoyun Xie
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China.
| | - Yuan Wen
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Zirun Wang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Bin Wei
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
| | - Zhaowei Wang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, China
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Chen A, Zhang J, Zhou Y, Tang H. Preparation of a zinc-based metal–organic framework (MOF-5)/BiOBr heterojunction for photodegradation of Rhodamine B. REACTION KINETICS MECHANISMS AND CATALYSIS 2021. [DOI: 10.1007/s11144-021-02107-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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16
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Kaur M, Mehta SK, Devi P, Kansal SK. Bi2WO6/NH2-MIL-88B(Fe) heterostructure: An efficient sunlight driven photocatalyst for the degradation of antibiotic tetracycline in aqueous medium. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.10.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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17
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Zhao J, Guo X, He Q, Wu F, Yao B. Construction of N-CQDs/InNbO4 composites for the removal of ipronidazole: Performance and degradation mechanism. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122567] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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18
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Orimolade BO, Idris AO, Feleni U, Mamba B. Recent advances in degradation of pharmaceuticals using Bi 2WO 6 mediated photocatalysis - A comprehensive review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 289:117891. [PMID: 34364116 DOI: 10.1016/j.envpol.2021.117891] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/27/2021] [Accepted: 07/30/2021] [Indexed: 05/27/2023]
Abstract
The pollution of water bodies by residual pharmaceuticals is a major problem globally. Bismuth tungstate mediated photocatalysis has been effective in the removal of these organics from water. Bismuth tungstate (Bi2WO6) has proven to be an excellent visible light active photocatalyst because of its non-toxicity, low band gap energy and ease of preparation. It has been widely applied for the removal of a wide array of organic pollutants, particularly dyes, from wastewater. However, recently, much attention has been channelled to its application for the degradation of pharmaceuticals. In this present review, the recent trends in the applications of Bi2WO6 based photocatalysts for the removal of pharmaceuticals in wastewater are comprehensively discussed. The fabrication of Bi2WO6 based photocatalysts with enhanced photocatalytic performances through morphology control, doping and formation of heterojunctions are highlighted. Much discussion centres on the mechanisms and possible degradation pathways of antibiotic pharmaceuticals in wastewater. Finally, areas needing more attention and investigation on the use of Bi2WO6 based photocatalysts for removal of pharmaceuticals from wastewater especially towards real-life applications are presented for future research directions.
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Affiliation(s)
- Benjamin O Orimolade
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Private Bag X6, Florida Science Campus, 1709, Johannesburg, South Africa.
| | - Azeez Olayiwola Idris
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Private Bag X6, Florida Science Campus, 1709, Johannesburg, South Africa
| | - Usisipho Feleni
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Private Bag X6, Florida Science Campus, 1709, Johannesburg, South Africa
| | - Bhekie Mamba
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Private Bag X6, Florida Science Campus, 1709, Johannesburg, South Africa
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Chen H, Zhang X, Jiang L, Yuan X, Liang J, Zhang J, Yu H, Chu W, Wu Z, Li H, Li Y. Strategic combination of nitrogen-doped carbon quantum dots and g-C3N4: Efficient photocatalytic peroxydisulfate for the degradation of tetracycline hydrochloride and mechanism insight. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118947] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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20
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Zhao Y, Yuan X, Li X, Jiang L, Wang H. Burgeoning prospects of biochar and its composite in persulfate-advanced oxidation process. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124893. [PMID: 33418291 DOI: 10.1016/j.jhazmat.2020.124893] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/14/2020] [Accepted: 12/16/2020] [Indexed: 06/12/2023]
Abstract
In the last decade, more and more refractory organic contaminants with severe health risks have been detected in the aquatic ecosystem. Sulfate radical (SO4·-)-based advanced oxidation process (SR-AOP) is recognized as an efficient approach for the removal of organic contaminants. Biochar (BC) and its composites (BCs) have been applied into SR-AOP for the double advantages of adsorption and catalytic ability. This paper gives systematic emphasis to the development and progress of biochar and its composites as catalyst in persulfate-advanced oxidation process. Synthetic techniques including the directed pyrolysis of mixed materials and post-immersed method are discussed. The physicochemical properties of biochar (such as surface area, surface functional groups, defect structure and persistent free radicals, etc.) that affect persulfate activation are provided. Then, emphasis is placed on the crucial role of biochar in affecting the catalytic property of BCs including stabilizing nanoparticles, expanding the surface area, increasing active sites and regulating electron transfer reactions. Integrating mechanistic insights and different biochar-based catalysts highlight the understanding of persulfate activation and catalytic degradation. Possible challenges are finally proposed in the fundamental research and practically scaled-up application.
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Affiliation(s)
- Yanlan Zhao
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Xingzhong Yuan
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China.
| | - Xiaodong Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Longbo Jiang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China
| | - Hou Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China; Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore.
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21
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Sousa HBA, Martins CSM, Prior JAV. You Don't Learn That in School: An Updated Practical Guide to Carbon Quantum Dots. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:611. [PMID: 33804394 PMCID: PMC7998311 DOI: 10.3390/nano11030611] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/15/2021] [Accepted: 02/22/2021] [Indexed: 12/25/2022]
Abstract
Carbon quantum dots (CQDs) have started to emerge as candidates for application in cell imaging, biosensing, and targeted drug delivery, amongst other research fields, due to their unique properties. Those applications are possible as the CQDs exhibit tunable fluorescence, biocompatibility, and a versatile surface. This review aims to summarize the recent development in the field of CQDs research, namely the latest synthesis progress concerning materials/methods, surface modifications, characterization methods, and purification techniques. Furthermore, this work will systematically explore the several applications CQDs have been subjected to, such as bioimaging, fluorescence sensing, and cancer/gene therapy. Finally, we will briefly discuss in the concluding section the present and future challenges, as well as future perspectives and views regarding the emerging paradigm that is the CQDs research field.
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Affiliation(s)
| | | | - João A. V. Prior
- LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira n. 228, 4050-313 Porto, Portugal; (H.B.A.S.); (C.S.M.M.)
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22
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Pseudohomogeneous metallic catalyst based on tungstate-decorated amphiphilic carbon quantum dots for selective oxidative scission of alkenes to aldehyde. Sci Rep 2021; 11:4411. [PMID: 33627721 PMCID: PMC7904908 DOI: 10.1038/s41598-021-83863-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 02/09/2021] [Indexed: 12/14/2022] Open
Abstract
Herein, we present an interesting role of tungstate-decorated amphiphilic carbon quantum dots (A-CQDs/W) in the selective oxidative cleavage of alkenes to aldehydes. In this work, for the first time, we disclose an unprecedented tungstate-based oxidative system incorporating A-CQDs as a bridge to the homogeneous catalyst for selective and efficient cleavage of a wide substrate scope of alkenes into aldehydes. The A-CQDs/W were synthesized via a one-step hydrothermal synthesis approach using 1-aminopropyl-3-methyl-imidazolium chloride and stearic acid for the surface modification, following by anion-exchange to immobilize WO4-2 to A-CQDs. The A-CQDs/W act as a pseudohomogeneous metallic catalyst (PMC) for selective oxidative scission of alkenes under phase transfer catalysts (PTC) free condition without over oxidation to acids, using water and H2O2 as a green oxidant. Thanks to the sub-nanometric size and novel engineered chemical structure, this PMC and reactants are in the same phase, besides they can be easily isolated from each other by extraction processes. The synthesized PMC exhibited excellent solubility and stability in various solvents. Interestingly, the system's high conversion efficiency was preserved even after eight catalytic cycles indicating the recyclability of the synthesized PMC. We believe that this study provides a significant and conceptually novel advance in oxidative cleavage chemistry.
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Xu L, Zhang H, Xiong P, Zhu Q, Liao C, Jiang G. Occurrence, fate, and risk assessment of typical tetracycline antibiotics in the aquatic environment: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 753:141975. [PMID: 33207448 DOI: 10.1016/j.scitotenv.2020.141975] [Citation(s) in RCA: 278] [Impact Index Per Article: 92.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/09/2020] [Accepted: 08/23/2020] [Indexed: 05/03/2023]
Abstract
Tetracyclines (TCs), used as human and veterinary medicines, are the most widely used antibiotics. More than 75% of TCs are excreted in an active form and released into the environment through human and animal urine and feces, causing adverse effects on the ecological system and human health. Few articles review the environmental occurrence and behaviors of TCs, as well as their risks and toxicities. Here, we comprehensively summarized the recent advances on the following important issues: (1) Environmental occurrence of TCs. TCs are used globally and their occurrence in the aquatic environment has been documented, including surface water, groundwater, drinking water, wastewater, sediment, and sludge. (2) Environmental behaviors of TCs, particularly the fate of TCs in wastewater treatment plants (WWTPs). Most WWTPs cannot effectively remove TCs from wastewater, so alternative methods for efficient removal of TCs need to be developed. The latest degradation methods of TCs are summarized, including adsorption, photocatalytic, photochemical and electrochemical, and biological degradations. (3) Toxicities and possible risks of TCs. The toxicological data of TCs indicate that several TCs are more toxic to algae than fish and daphnia. Risk assessments based on individual compound exposure indicate that the risks arising from the current concentrations of TCs in the aquatic environment cannot be ignored.
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Affiliation(s)
- Longyao Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - He Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ping Xiong
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qingqing Zhu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunyang Liao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Institute of Environment and Health, Jianghan University, Wuhan, Hubei 430056, China; Institute of Environment and Health, Hangzhou Institute for Advanced Study, UCAS, Hangzhou, Zhejiang 310000, China.
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China; Institute of Environment and Health, Jianghan University, Wuhan, Hubei 430056, China; Institute of Environment and Health, Hangzhou Institute for Advanced Study, UCAS, Hangzhou, Zhejiang 310000, China
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24
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Lv C, Lan X, Wang L, Dai X, Zhang M, Cui J, Yuan S, Wang S, Shi J. Rapidly and highly efficient degradation of tetracycline hydrochloride in wastewater by 3D IO-TiO 2-CdS nanocomposite under visible light. ENVIRONMENTAL TECHNOLOGY 2021; 42:377-387. [PMID: 31180796 DOI: 10.1080/09593330.2019.1629183] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 05/28/2019] [Indexed: 05/22/2023]
Abstract
Tetracycline hydrochloride as an environmental pollutant is biologically toxic and highly difficult to degrade. To solve this problem, an efficient catalyst IO-TiO2-CdS composite with honeycomb-like three-dimensional (3D) inverse opal TiO2 (IO-TiO2) and cadmium sulphide (CdS) was synthesized and applied in the degradation of tetracycline hydrochloride in this paper. More than 99% of the tetracycline hydrochloride (30 mg/L) can be degraded by IO-TiO2-CdS (30 mg) within 20 min under visible light irradiation. Surprisingly, the naphthol rings can be opened and degraded to alkane with a minimum molecular weight of 60, which is the smallest fragment among all publications. The three-dimensional ordered macroporous (3DOM) structure of IO-TiO2 improves the utilization of light via the slow photon effect. Meanwhile, the addition of CdS enhances the degradation efficiency of tetracycline by broadening the range of absorption spectrum and improving the separation of charge carrier on the catalyst. In addition to the degradation of tetracycline hydrochloride, IO-TiO2-CdS also shows a good degradation efficiency of Rhodamine B (RhB). This work provides a promising approach to construct visible light response photocatalysts with non-noble metal for efficient degradation of wastewater pollutants.
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Affiliation(s)
- Chao Lv
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao, People's Republic of China
| | - Xuefang Lan
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao, People's Republic of China
| | - Lili Wang
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao, People's Republic of China
| | - Xiaomeng Dai
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao, People's Republic of China
| | - Mengli Zhang
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao, People's Republic of China
| | - Junyuan Cui
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao, People's Republic of China
| | - Shaoteng Yuan
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao, People's Republic of China
| | - Song Wang
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao, People's Republic of China
| | - Jinsheng Shi
- Department of Chemistry and Pharmaceutical Science, Qingdao Agricultural University, Qingdao, People's Republic of China
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Terephthalate acid decorated TiO2 for visible light driven photocatalysis mediated via ligand-to-metal charge transfer (LMCT). Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125188] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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26
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Si QS, Guo WQ, Wang HZ, Liu BH, Ren NQ. Carbon quantum dots-based semiconductor preparation methods, applications and mechanisms in environmental contamination. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.08.036] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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27
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Liu G, Cui P, Liu X, Wang X, Liu G, Zhang C, Liu M, Chen Y, Xu S. A facile preparation strategy for Bi2O4/Bi2WO6 heterojunction with excellent visible light photocatalytic activity. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121542] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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28
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Xiao K, Huang D, Kang C, Sun S. Removal of tetracyclines from aqueous solutions by electrocoagulation/pecan nutshell coupling processes: synergistic effect and mechanism. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:683-694. [PMID: 32970621 DOI: 10.2166/wst.2020.367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The present work compared electrocoagulation (EC)/pecan shell (PS) coupling process with a simple electrocoagulation (EC) process for the removal of tetracyclines (TCs). The results indicated that the addition of appropriate PS could lead to the enhancement of the removal efficiency and decrease of operating time via synergistic influence, including conventional EC process, biomass materials adsorption, charge neutralization and coordination adsorption. The ideal condition for the coupling process was 2.5 mA/cm2 for current density and 3 cm for plate spacing. Based on the optimum condition, when the dosage of PS was 5 g/L, the initial concentration of tetracycline hydrochloride (TC), oxytetracycline hydrochloride (OTC) and chlortetracycline hydrochloride (CTC) was 250 mg/L, the removal rate of PS was 55.90%, 45.10% and 14.98% higher than those of EC process after 40 min treatment. In addition, compared to conventional EC process, the unit energy demand (UED) decreased by 49.62%, 53.2 4% and 26.35% and the unit electrode material demand (UEMD) decreased by 49.80%, 85.65% and 44.37%, respectively, which means more energy conservation and environmental protection.
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Affiliation(s)
- Kunkun Xiao
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130012, China E-mail:
| | - Dongmei Huang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130012, China E-mail:
| | - Chunli Kang
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130012, China E-mail:
| | - Siyang Sun
- Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130012, China E-mail:
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Zhang J, Yuan X, Si M, Jiang L, Yu H. Core-shell structured cadmium sulfide nanocomposites for solar energy utilization. Adv Colloid Interface Sci 2020; 282:102209. [PMID: 32721625 DOI: 10.1016/j.cis.2020.102209] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 04/14/2020] [Accepted: 07/04/2020] [Indexed: 01/02/2023]
Abstract
Solar energy utilization technologies have been widely explored to solve the global energy crisis because the inexhaustible solar energy can be converted into chemical fuel and electricity. Various semiconductors that are crucial for solar energy utilization have been extensively developed. Among them, cadmium sulfide (CdS) has attracted extensive attention due to its suitable band-gap and excellent electrical/optical properties. However, CdS is still limited by rapid charge recombination, instability and low quantum efficiency. Core-shell structures can provide great opportunities for constructing advanced structures with superior properties to overcome the remaining challenges. This review focuses on the significant advances in core-shell structured CdS nanocomposites for solar energy utilization. Initially, the synthetic methods to construct core-shell structured CdS nanocomposites are reviewed. Then the applications in solar energy utilization are discussed, including photocatalytic\photoelectrochemical water splitting, photocatalytic CO2 reduction and solar cells. Finally, the perspectives of core-shell structured CdS nanocomposites for solar energy utilization are proposed.
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Affiliation(s)
- Jin Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, PR China
| | - Xingzhong Yuan
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, PR China.
| | - Mengying Si
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
| | - Longbo Jiang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, PR China.
| | - Hanbo Yu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environment Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, PR China
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Huang J, Chen W, Yu X, Fu X, Zhu Y, Zhang Y. Fabrication of a ternary BiOCl/CQDs/rGO photocatalyst: The roles of CQDs and rGO in adsorption-photocatalytic removal of ciprofloxacin. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124758] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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31
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Dhenadhayalan N, Lin KC, Saleh TA. Recent Advances in Functionalized Carbon Dots toward the Design of Efficient Materials for Sensing and Catalysis Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1905767. [PMID: 31769599 DOI: 10.1002/smll.201905767] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/01/2019] [Indexed: 05/23/2023]
Abstract
Since the past decade, enormous research efforts have been devoted to the detection/degradation and quantification of environmental toxic pollutants and biologically important molecules due to their ubiquitous necessity in the fields of environmental protection and human health. These fields of sensor and catalysis are advanced to a new era after emerging of nanomaterials, especially, carbon nanomaterials including graphene, carbon nanotube, carbon dots (C-dots), etc. Among them, the C-dots in the carbon family are rapidly boosted in the aspect of synthesis and application due to their superior properties of chemical and photostability, highly fluorescent with tunable, non/low-toxicity, and biocompatibility. The C-dot-based functional materials have shown great potential in sensor and catalysis fields for the detection/degradation of environmental pollutants. The major advantage of C-dots is that they can be easily prepared from numerous biomass/waste materials which are inexpensive and environment-friendly and are suitable for a developing trend of sustainable materials. This review is devoted to the recent development (since 2017) in the synthesis of biomass- and chemical-derived C-dots as well as diverse functionalization of C-dots. Their capability as a sensor and catalyst and respective mechanism are summarized. The future perspectives of C-dots are also discussed.
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Affiliation(s)
- Namasivayam Dhenadhayalan
- Department of Chemistry, National Taiwan University, Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 10617, Taiwan
| | - King-Chuen Lin
- Department of Chemistry, National Taiwan University, Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 10617, Taiwan
| | - Tawfik A Saleh
- Chemistry Department, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
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Liu Y, Zhou Y, Tang Q, Li Q, Chen S, Sun Z, Wang H. A direct Z-scheme Bi2WO6/NH2-UiO-66 nanocomposite as an efficient visible-light-driven photocatalyst for NO removal. RSC Adv 2020; 10:1757-1768. [PMID: 35494666 PMCID: PMC9047168 DOI: 10.1039/c9ra09270f] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 12/23/2019] [Indexed: 11/21/2022] Open
Abstract
To explore an efficient photocatalyst for NO pollution, a direct Z-scheme photocatalytic system is successfully fabricated by coupling Bi2WO6 with NH2-UiO-66 via a simple hydrothermal synthesis technique. The Z-scheme system promotes the NO photocatalytic oxidation activity with an optimum NO removal rate of 79%, which is 2.7 and 1.2 times that obtained by using only pristine Bi2WO6 and NH2-UiO-66, respectively. Simultaneously, superior selectivity for converting NO to NO3−/NO2− is observed. The enhanced photocatalytic performance of the Bi2WO6/NH2-UiO-66 hybrids is attributed to the following two aspects: (i) large specific area of NH2-UiO-66, which exposes more active sites and is beneficial to the adsorption and activation of NO; (ii) outstanding Z-scheme structure constructed between BiWO6 and NH2-UiO-66, which can improve the efficiency of the separation of electron–hole pairs and preserves the strong oxidation ability of hybrids. ESR analysis shows that ·O2− and ·OH contribute to NO removal. A possible photocatalytic mechanism of NO oxidation on the direct Z-scheme photocatalyst (BWO/2NU) under visible light irradiation is proposed. This work displays the BWO/2NU hybrid's potential for treating low-concentration air pollutants, and the proposed Z-scheme photocatalyst design and promotion mechanism may inspire more rational synthesis of highly efficient photocatalysts for NO removal. To explore an efficient photocatalyst for NO pollution, a direct Z-scheme photocatalytic system is successfully fabricated by coupling Bi2WO6 with NH2-UiO-66 via a simple hydrothermal synthesis technique.![]()
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Affiliation(s)
- Yiqiu Liu
- Key Laboratory of Environment Remediation and Ecological Health
- Ministry of Education
- College of Environmental & Resources Science
- Zhejiang University
- Hangzhou 310058
| | - Yi Zhou
- Key Laboratory of Environment Remediation and Ecological Health
- Ministry of Education
- College of Environmental & Resources Science
- Zhejiang University
- Hangzhou 310058
| | - Qijun Tang
- Key Laboratory of Environment Remediation and Ecological Health
- Ministry of Education
- College of Environmental & Resources Science
- Zhejiang University
- Hangzhou 310058
| | - Qian Li
- Key Laboratory of Environment Remediation and Ecological Health
- Ministry of Education
- College of Environmental & Resources Science
- Zhejiang University
- Hangzhou 310058
| | - Si Chen
- Key Laboratory of Environment Remediation and Ecological Health
- Ministry of Education
- College of Environmental & Resources Science
- Zhejiang University
- Hangzhou 310058
| | - Zhuxing Sun
- School of Environmental Science and Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Haiqiang Wang
- Key Laboratory of Environment Remediation and Ecological Health
- Ministry of Education
- College of Environmental & Resources Science
- Zhejiang University
- Hangzhou 310058
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Yang P, Zhu Z, Zhang T, Zhang W, Chen W, Cao Y, Chen M, Zhou X. Orange-Emissive Carbon Quantum Dots: Toward Application in Wound pH Monitoring Based on Colorimetric and Fluorescent Changing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1902823. [PMID: 31518068 DOI: 10.1002/smll.201902823] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 08/29/2019] [Indexed: 05/18/2023]
Abstract
Monitoring of wound pH is critical for interpreting wound status, because early identification of wound infection or nonhealing wounds is conducive to administion of therapies at the right time. Here, novel orange-emissive carbon quantum dots (O-CDs) are synthesized via microwave-assisted heating of 1,2,4-triaminobenzene and urea aqueous solution. The as-prepared O-CDs exhibit distinctive colorimetric response to pH changing, and also display pH-sensitive fluorescence. Benefiting from the response of O-CDs over a wound-relevant pH range (5-9), medical cotton cloth is selected to immobilize O-CDs through hydrogen bond interactions, the resultant O-CDs-coated cloth with emission at 560 nm shows a high response to pH variation in the range of 5-9 via both fluorescence and visible colorimetric changes. Moreover, the sensitivity of fluorescence to pH is capable of establishing an analytical mode for determining pH value. Further, the O-CDs-based pH indicator possesses not only superior biocompatibility and drug compatibility but also excellent resistance leachability and high reversibility. Importantly, the usage of O-CDs-coated cloth to detect pH is free from the interference of blood contamination and long-term storage, thus providing a valuable strategy for wound pH monitoring through visual response and quantitative determination.
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Affiliation(s)
- Pei Yang
- College of Materials Science and Engineering, Fast-Growing Tree and Agro-Fibre Materials Engineering Center, Nanjing Forestry University, Nanjing, 210037, Jiangsu, P. R. China
| | - Ziqi Zhu
- College of Materials Science and Engineering, Fast-Growing Tree and Agro-Fibre Materials Engineering Center, Nanjing Forestry University, Nanjing, 210037, Jiangsu, P. R. China
| | - Tao Zhang
- College of Materials Science and Engineering, Fast-Growing Tree and Agro-Fibre Materials Engineering Center, Nanjing Forestry University, Nanjing, 210037, Jiangsu, P. R. China
| | - Wei Zhang
- College of Materials Science and Engineering, Fast-Growing Tree and Agro-Fibre Materials Engineering Center, Nanjing Forestry University, Nanjing, 210037, Jiangsu, P. R. China
| | - Weimin Chen
- College of Materials Science and Engineering, Fast-Growing Tree and Agro-Fibre Materials Engineering Center, Nanjing Forestry University, Nanjing, 210037, Jiangsu, P. R. China
| | - Yizhong Cao
- College of Materials Science and Engineering, Fast-Growing Tree and Agro-Fibre Materials Engineering Center, Nanjing Forestry University, Nanjing, 210037, Jiangsu, P. R. China
| | - Minzhi Chen
- College of Materials Science and Engineering, Fast-Growing Tree and Agro-Fibre Materials Engineering Center, Nanjing Forestry University, Nanjing, 210037, Jiangsu, P. R. China
| | - Xiaoyan Zhou
- College of Materials Science and Engineering, Fast-Growing Tree and Agro-Fibre Materials Engineering Center, Nanjing Forestry University, Nanjing, 210037, Jiangsu, P. R. China
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Mohammadi M, Rezaei A, Khazaei A, Xuwei S, Huajun Z. Targeted Development of Sustainable Green Catalysts for Oxidation of Alcohols via Tungstate-Decorated Multifunctional Amphiphilic Carbon Quantum Dots. ACS APPLIED MATERIALS & INTERFACES 2019; 11:33194-33206. [PMID: 31449385 DOI: 10.1021/acsami.9b07961] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Achieving green and sustainable chemical processes by replacing organic solvents with water has always been one of the green chemistry goals and a challenging topic for chemists. However, the poor solubility of organic materials is a major limitation to achieving this goal, especially in alcohol oxidation. In this contribution, the development and design of amphiphilic catalysts via abundant, safe, cheaper, and more biocompatible sources have received notable attention. To this purpose, herein, our group successfully synthesized a new multifunctional amphiphilic carbon quantum dot (CQD) composed of 1-aminopropyl-3-methyl-imidazolium chloride ([APMim][Cl]), dodecylamine (DDA), and citric acid (CA) (denoted as CQDs@DDA-IL/Cl) using a one-pot hydrothermal route. The CQDs@DDA-IL/Cl was then utilized as an amphiphilic stabilizer for anchoring tungsten ions using an anion-exchange method (marked as CQDs@DDA-IL/W). The CQDs@DDA-IL/W as a reusable catalyst selectivity mediated the oxidation of alcoholic substrates with stoichiometric H2O2 in water solvent. The extraordinary performance of our catalyst was attributable to the coexistence of ionic liquid (IL) and DDA upon the surface of the CQDs@DDA-IL/W, which plays a main duty in the hydrophobic/hydrophilic balance, and significantly increase the catalyst compatibility in the aqueous medium with the purpose of removing organic solvents. As a result, the great mass transfer occurs in the two-phase medium using this amphiphilic nanocatalyst without any phase transfer catalyst (PTC) or other additives. The 100% selectivity, excellent turnover number (TON) and turnover frequency (TOF), high yield, almost complete and fast conversion of alcohol to the desired aldehydes and ketones without more oxidation, and easy and no-trouble isolation of product and catalyst are outstanding features of this catalytic system.
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Affiliation(s)
- Masoumeh Mohammadi
- Faculty of Chemistry , Bu-Ali Sina University , Hamedan P.O. Box 38695-65178 , Iran
| | - Aram Rezaei
- Nano Drug Delivery Research Center, Health Technology Institute , Kermanshah University of Medical Sciences , Kermanshah 67145-1673 , Iran
| | - Ardeshir Khazaei
- Nano Drug Delivery Research Center, Health Technology Institute , Kermanshah University of Medical Sciences , Kermanshah 67145-1673 , Iran
| | - Shu Xuwei
- Department of Applied Chemistry , Zhejiang University of Technology , Hangzhou 310032 , China
| | - Zheng Huajun
- Department of Applied Chemistry , Zhejiang University of Technology , Hangzhou 310032 , China
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Lu S, Liu L, Wang H, Zhao W, Li Z, Qu Z, Li J, Sun T, Wang T, Sui G. Synthesis of dual functional gallic-acid-based carbon dots for bioimaging and antitumor therapy. Biomater Sci 2019; 7:3258-3265. [PMID: 31169282 DOI: 10.1039/c9bm00570f] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Carbon quantum dots are excellent photoluminescent materials because of their unique fluorescence properties. They are widely used in biomedical imaging due to their good biocompatibility. However, carbon quantum dots with antitumor activity have rarely been reported. Gallic acid (GA) is an anticancer agent and effective against many types of tumor cells. In this study, GA based carbon dots (GACDs) with fluorescence and antitumor activity were synthesized by a simple microwave-assisted method and characterized by transmission electron microscopy (TEM), and Fourier transformed infrared (FTIR) and X-ray photoelectron spectroscopy (XPS). Studies of optical properties indicated that the GACDs exhibited significant photoluminescence. In addition, we observed the antitumor activity of the GACDs using both cell-based assays and mouse xenograft tumors. Our results demonstrated that the GACDs can be used as both a bioimaging material and an antitumor agent, suggesting their great potential in future clinical applications.
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Affiliation(s)
- Shuting Lu
- Department of Chemistry, College of Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.
| | - Liping Liu
- Harbin First Specialist Hospital, 217 Hongwei Road, Harbin 150056, China
| | - Henan Wang
- Department of Chemistry, College of Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.
| | - Wancheng Zhao
- Department of Chemistry, College of Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.
| | - Zeyu Li
- Department of Chemistry, College of Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.
| | - Zheng Qu
- Department of Chemistry, College of Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.
| | - Jialu Li
- Department of Chemistry, College of Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.
| | - Tiedong Sun
- Department of Chemistry, College of Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.
| | - Ting Wang
- Department of Chemistry, College of Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.
| | - Guangchao Sui
- College of Life Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China
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Yu H, Jiang L, Wang H, Huang B, Yuan X, Huang J, Zhang J, Zeng G. Modulation of Bi 2 MoO 6 -Based Materials for Photocatalytic Water Splitting and Environmental Application: a Critical Review. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1901008. [PMID: 30972930 DOI: 10.1002/smll.201901008] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Indexed: 05/20/2023]
Abstract
Highly active photocatalysts driving chemical reactions are of paramount importance toward renewable energy substitutes and environmental protection. As a fascinating Aurivillius phase material, Bi2 MoO6 has been the hotspot in photocatalytic applications due to its visible light absorption, nontoxicity, low cost, and high chemical durability. However, pure Bi2 MoO6 suffers from low efficiency in separating photogenerated carriers, small surface area, and poor quantum yield, resulting in low photocatalytic activity. Various strategies, such as morphology control, doping/defect-introduction, metal deposition, semiconductor combination, and surface modification with conjugative π structures, have been systematically explored to improve the photocatalytic activity of Bi2 MoO6 . To accelerate further developments of Bi2 MoO6 in the field of photocatalysis, this comprehensive Review endeavors to summarize recent research progress for the construction of highly efficient Bi2 MoO6 -based photocatalysts. Furthermore, benefiting from the enhanced photocatalytic activity of Bi2 MoO6 -based materials, various photocatalytic applications including water splitting, pollutant removal, and disinfection of bacteria, were introduced and critically reviewed. Finally, the current challenges and prospects of Bi2 MoO6 are pointed out. This comprehensive Review is expected to consolidate the existing fundamental theories of photocatalysis and pave a novel avenue to rationally design highly efficient Bi2 MoO6 -based photocatalysts for environmental pollution control and green energy development.
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Affiliation(s)
- Hanbo Yu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Longbo Jiang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Hou Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore
| | - Binbin Huang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Xingzhong Yuan
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Jinhui Huang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Jin Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, P. R. China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, P. R. China
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Wang Y, Rao L, Wang P, Guo Y, Guo X, Zhang L. Porous oxygen-doped carbon nitride: supramolecular preassembly technology and photocatalytic degradation of organic pollutants under low-intensity light irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:15710-15723. [PMID: 30953320 DOI: 10.1007/s11356-019-04800-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 03/06/2019] [Indexed: 06/09/2023]
Abstract
In order to overcome photocatalytic technology application limitations in water due to weak light intensity, it is crucial to synthesize photocatalysts that respond to weak light. In this study, porous and oxygen-doped carbon nitride (CN-MC) was synthesized via supramolecular preassembly technology using melamine and cyanuric chloride. The carbon nitride catalyst produced via this technology has a relatively high surface area (63.2 m2 g-1), irregular pores, and oxygen doping characteristics, which enhance the light capture capacity, increase the number of reactive sites, and accelerate electron-hole separation efficiency. Thus, the CN-MC exhibited excellent photocatalytic activity during the degradation of organic pollutants Rhodamine B (RhB, 95% removal within 6 h) and tetracycline hydrochloride (TC-HCl, 70% removal within 6 h) under low-intensity light (the light intensity = 0.8~1.8 mW cm-2 with a wavelength range of 300-700 nm). Mechanistic analysis showed that ·O2- and ·OH were the dominant active free radicals during RhB and TC-HCl photocatalytic degradation over CN-MC. The proposed synthesis strategy effectively improves the photocatalytic activity of graphite carbon nitride under weak light by producing a porous morphology and oxygen atom doping.
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Affiliation(s)
- Yuxiong Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Lei Rao
- College of Mechanics and Materials, Hohai University, Nanjing, 210098, China.
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China.
| | - Yong Guo
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Xiang Guo
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Lixin Zhang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
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38
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Chu KW, Lee SL, Chang CJ, Liu L. Recent Progress of Carbon Dot Precursors and Photocatalysis Applications. Polymers (Basel) 2019; 11:E689. [PMID: 30995724 PMCID: PMC6523528 DOI: 10.3390/polym11040689] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 04/05/2019] [Accepted: 04/06/2019] [Indexed: 12/16/2022] Open
Abstract
Carbon dots (CDs), a class of carbon-based sub-ten-nanometer nanoparticles, have attracted great attention since their discovery fifteen years ago. Because of the outstanding photoluminescence properties, photostability, low toxicity, and low cost, CDs have potential to replace traditional semiconductor quantum dots which have serious drawbacks of toxicity and high cost. This review covers the common top-down and bottom-up methods for the synthesis of CDs, different categories of CD precursors (small molecules, natural polymers, and synthetic polymers), one-pot and multi-step methods to produce CDs/photocatalyst composites, and recent advances of CDs on photocatalysis applications mostly in pollutant degradation and energy areas. A broad range of precursors forming fluorescent CDs are discussed, including small molecule sole or dual precursors, natural polymers such as pure polysaccharides and proteins and crude bio-resources from plants or animals, and various synthetic polymer precursors with positive, negative, neutral and hydrophilic, hydrophobic, or zwitterionic feature. Because of the wide light absorbance, excellent photoluminescence properties and electron transfer ability, CDs have emerged as a new type of photocatalyst. Recent work of CDs as sole photocatalyst or in combination with other materials (e.g., metal, metal sulfide, metal oxide, bismuth-based semiconductor, or other traditional photocatalysts) to form composite catalyst for various photocatalytic applications are reviewed. Possible future directions are proposed at the end of the article on mechanistic studies, production of CDs with better controlled properties, expansion of polymer precursor pool, and systematic studies of CDs for photocatalysis applications.
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Affiliation(s)
- Kuan-Wu Chu
- Department of Chemical and Biomolecular Engineering, University of Akron, Akron, OH 44325, USA.
| | - Sher Ling Lee
- Department of Chemical Engineering, Feng Chia University, 100 Wenhwa Road, Seatwen, Taichung 40724, Taiwan.
| | - Chi-Jung Chang
- Department of Chemical Engineering, Feng Chia University, 100 Wenhwa Road, Seatwen, Taichung 40724, Taiwan.
| | - Lingyun Liu
- Department of Chemical and Biomolecular Engineering, University of Akron, Akron, OH 44325, USA.
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Yuan X, Zhang J, Yan M, Si M, Jiang L, Li Y, Yu H, Zhang J, Zeng G. Nitrogen doped carbon quantum dots promoted the construction of Z-scheme system with enhanced molecular oxygen activation ability. J Colloid Interface Sci 2019; 541:123-132. [DOI: 10.1016/j.jcis.2019.01.072] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/11/2019] [Accepted: 01/12/2019] [Indexed: 01/02/2023]
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40
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Molaei MJ. Carbon quantum dots and their biomedical and therapeutic applications: a review. RSC Adv 2019; 9:6460-6481. [PMID: 35518468 PMCID: PMC9061119 DOI: 10.1039/c8ra08088g] [Citation(s) in RCA: 188] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 02/14/2019] [Indexed: 12/19/2022] Open
Abstract
In recent years, nano carbon quantum dots (CQDs) have received increasing attention due to their properties such as small size, fluorescence emission, chemical stability, water solubility, easy synthesis, and the possibility of functionalization. CQDs are fluorescent 0D carbon nanostructures with sizes below 10 nm. The fluorescence in CQDs originates from two sources, the fluorescence emission from bandgap transitions of conjugated π-domains and fluorescence from surface defects. The CQDs can emit fluorescence in the near-infrared (NIR) spectral region which makes them appropriate for biomedical applications. The fluorescence in these structures can be tuned with respect to the excitation wavelength. The CQDs have found applications in different areas such as biomedicine, photocatalysis, photosensors, solar energy conversion, light emitting diodes (LEDs), etc. The biomedical applications of CQDs include bioimaging, drug delivery, gene delivery, and cancer therapy. The fluorescent CQDs have low toxicity and other exceptional physicochemical properties in comparison to heavy metals semiconductor quantum dots (QDs) which make them superior candidates for biomedical applications. In this review, the synthesis routes and optical properties of the CQDs are clarified and recent advances in CQDs biomedical applications in bioimaging (in vivo and in vitro), drug delivery, cancer therapy, their potential to pass blood-brain barrier (BBB), and gene delivery are discussed.
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Affiliation(s)
- Mohammad Jafar Molaei
- Faculty of Chemical and Materials Engineering, Shahrood University of Technology Shahrood Iran
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41
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A Review on the Synthesis and Characterization of Metal Organic Frameworks for Photocatalytic Water Purification. Catalysts 2019. [DOI: 10.3390/catal9010052] [Citation(s) in RCA: 106] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
This review analyzes the preparation and characterization of metal organic frameworks (MOFs) and their application as photocatalysts for water purification. The study begins by highlighting the problem of water scarcity and the different solutions for purification, including photocatalysis with semiconductors, such as MOFs. It also describes the different methodologies that can be used for the synthesis of MOFs, paying attention to the purification and activation steps. The characterization of MOFs and the different approaches that can be followed to learn the photocatalytic processes are also detailed. Finally, the work reviews literature focused on the degradation of contaminants from water using MOF-based photocatalysts under light irradiation.
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Duan Z, Deng L, Shi Z, Zhang H, Zeng H, Crittenden J. In situ growth of Ag-SnO2 quantum dots on silver phosphate for photocatalytic degradation of carbamazepine: Performance, mechanism and intermediates toxicity assessment. J Colloid Interface Sci 2019; 534:270-278. [DOI: 10.1016/j.jcis.2018.09.039] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 01/19/2023]
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43
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Lv C, Lan X, Wang L, Yu Q, Zhang M, Sun H, Shi J. Alkaline-earth-metal-doped TiO2 for enhanced photodegradation and H2 evolution: insights into the mechanisms. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01687b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The doping strategy of TiO2 with an AM (alkali earth metal) for photocatalysis applications has been reported in several literature reports.
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Affiliation(s)
- Chao Lv
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
| | - Xuefang Lan
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
| | - Lili Wang
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
| | - Qi Yu
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
| | - Minghui Zhang
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
| | - Hualong Sun
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
| | - Jinsheng Shi
- Qingdao Agricultural University
- Department of Chemistry and Pharmaceutical Science
- Qingdao
- China
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Kumari M, Saroha AK. Performance of various catalysts on treatment of refractory pollutants in industrial wastewater by catalytic wet air oxidation: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 228:169-188. [PMID: 30218904 DOI: 10.1016/j.jenvman.2018.09.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 08/29/2018] [Accepted: 09/01/2018] [Indexed: 06/19/2023]
Abstract
The tremendous increase of industrialization and urbanization worldwide causes the depletion of natural resources such as water and air which urges the necessity to follow the environmental sustainability across the globe. This requires eco-friendly and economical technologies for depollution of wastewater and gases or zero emission approach. Therefore, in this context the treatment and reuse of wastewater is an environmental friendly approach due to shortage of fresh water. Catalytic wet air oxidation (CWAO) is a promising technology for the treatment of toxic and non-biodegradable organic pollutants in the wastewater generated from various industries. Various heterogeneous catalysts have been extensively used for treatment of various model pollutants such as phenols, carboxylic acids, nitrogenous compounds and different types of industrial effluents. The present review focuses on the literature published on the performances of various noble and non-noble metal catalysts for the treatment of various pollutants by CWAO. Reports on biodegradability enhancement of industrial wastewater containing toxic contaminants by CWAO are reviewed. Detailed discussion is made on catalyst deactivation and their mitigation study and also on the various factors which affects the CWAO reaction.
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Affiliation(s)
- Manjari Kumari
- Department of Chemical Engineering, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India
| | - Anil K Saroha
- Department of Chemical Engineering, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi, 110016, India
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45
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Xie Y, Dai Y, Yuan X, Jiang L, Zhou L, Wu Z, Zhang J, Wang H, Xiong T. Insight on the plasmonic Z-scheme mechanism underlying the highly efficient photocatalytic activity of silver molybdate/silver vanadate composite in rhodamine B degradation. J Colloid Interface Sci 2018; 530:493-504. [DOI: 10.1016/j.jcis.2018.04.031] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 04/06/2018] [Accepted: 04/06/2018] [Indexed: 12/22/2022]
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46
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Zhang J, Yan M, Yuan X, Si M, Jiang L, Wu Z, Wang H, Zeng G. Nitrogen doped carbon quantum dots mediated silver phosphate/bismuth vanadate Z-scheme photocatalyst for enhanced antibiotic degradation. J Colloid Interface Sci 2018; 529:11-22. [DOI: 10.1016/j.jcis.2018.05.109] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 05/28/2018] [Accepted: 05/29/2018] [Indexed: 02/09/2023]
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47
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Jiang Y, Peng Z, Wu F, Xiao Y, Jing X, Wang L, Liu Z, Zhang J, Liu Y, Ni L. A novel 3D/2D CdIn2S4 nano-octahedron/ZnO nanosheet heterostructure: facile synthesis, synergistic effect and enhanced tetracycline hydrochloride photodegradation mechanism. Dalton Trans 2018; 47:8724-8737. [DOI: 10.1039/c8dt01610k] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The synergistic effect and the unique 3D/2D hybrid structure of CIS/ZO-x heterojunctions are primarily responsible for the enhanced photocatalytic activity.
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Affiliation(s)
- Yinhua Jiang
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - ZhiYuan Peng
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Fengwei Wu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Yan Xiao
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Xuan Jing
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Lei Wang
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Zhanchao Liu
- School of Materials Science and Engineering
- Jiangsu University of Science and Technology
- Zhenjiang 212003
- China
| | - Jianming Zhang
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Yan Liu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
| | - Liang Ni
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- PR China
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