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Chen S, Li R, Zhao B, Fang M, Tian Y, Lei Y, Li Y, Geng L. Multifunctional N, Fe-doped carbon dots with peroxidase-like activity for the determination of H 2O 2 and ascorbic acid and cell protection against oxidation. Mikrochim Acta 2024; 191:384. [PMID: 38861028 DOI: 10.1007/s00604-024-06456-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 05/21/2024] [Indexed: 06/12/2024]
Abstract
Multifunctional N, Fe-doped carbon dots (N, Fe-CDs) were synthesized by the one-step hydrothermal method using ferric ammonium citrate and dicyandiamide as raw materials. The N, Fe-CDs exhibited peroxidase-like (POD) activity by catalyzing the oxidization of 3,3',5,5'-tetramethylbenzidine (TMB) to the green oxidation state ox-TMB in the presence of hydrogen peroxide (H2O2). Subsequently, based on the POD activity of N, Fe-CDs, an efficient and sensitive colorimetric method for the detection of H2O2 and ascorbic acid (AA) was established with a limit of detection of 0.40 µM and 2.05 µM. The proposed detection method has been successfully applied to detect AA in fruit juice, vitamin C tablets, and human serum samples and has exhibited excellent application prospects in biotechnology and food fields. Furthermore, N, Fe-CDs also showed a protective effect on the cell damage caused by H2O2 and could be used as an antioxidant agent.
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Affiliation(s)
- Shenna Chen
- Hebei Technology Innovation Center for Energy Conversion Materials and Devices, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China
| | - Ronghui Li
- Hebei Technology Innovation Center for Energy Conversion Materials and Devices, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China
| | - Bo Zhao
- Experimental Center for Teaching, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Mei Fang
- Hebei Technology Innovation Center for Energy Conversion Materials and Devices, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China
| | - Yun Tian
- College of Basic Medicine, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Yuhua Lei
- College of Basic Medicine, Hebei Medical University, Shijiazhuang, 050017, P. R. China
| | - Yayong Li
- Department of Rehabilitation Medicine, Shijiazhuang People's Hospital, Shijiazhuang, 050000, P. R. China
| | - Lina Geng
- Hebei Technology Innovation Center for Energy Conversion Materials and Devices, College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, 050024, P. R. China.
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Boonprakob N, Channei D, Zhao C. High-performance photocatalytic reduction of Cr(VI) using a retrievable Fe-doped WO 3/SiO 2 heterostructure. DISCOVER NANO 2024; 19:22. [PMID: 38294564 PMCID: PMC10831000 DOI: 10.1186/s11671-023-03919-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 10/27/2023] [Indexed: 02/01/2024]
Abstract
The enhancement of the photocatalytic performance of pristine WO3 was systematically adjusted due to its fast recombination rate and low reduction potential. A designed heterostructure photocatalyst was necessarily synthesised by Fe3+ metal ions doping into WO3 structure with and composition modification. In this study, we synthesised a retrievable Fe-doped WO3/SiO2 heterostructure using a surfactant-assisted hydrothermal method. This heterostructure was then employed as an effective photocatalyst for the removal of Cr(VI) under visible light irradiation. Enlarged photocatalytic reduction was observed over a synergetic 7.5 mol% Fe-doped WO3/SiO2-20 nanocomposite, resulting in dramatically increased activity compared with undoped WO3 and SiO2 nanomaterials under visible light illumination within 90 min. The presence of 7.5 mol% Fe3+ ion dopant in WO3 optimised electron-hole recombination, consequently reducing WO3 photocorrosion. After adding SiO2 nanoparticles, the binary WO3-SiO2 nanocomposite played roles as both adsorbent and photocatalyst to increase specific surface area. Thus, the 7.5 mol% Fe-doped WO3/SiO2-20 nanocomposite catalyst had more active sites on the surface of catalyst, and enhanced photocatalytic reduction was significantly achieved. The results showed 91.1% photocatalytic reduction over the optimum photocatalyst, with a photoreduction kinetic rate of 21.1 × 10-3 min-1, which was approximately four times faster than pristine WO3. Therefore, the superior optimal photocatalyst demonstrated reusability, with activities decreasing by only 9.8% after five cycles. The high photocatalytic performance and excellent stability of our photocatalyst indicate great potential for water pollution treatments.
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Affiliation(s)
- Natkritta Boonprakob
- Program of Chemistry, Faculty of Science and Technology, Uttaradit Rajabhat University, Uttaradit, 53000, Thailand.
| | - Duangdao Channei
- Department of Chemistry, Faculty of Science, Naresuan University, Phitsanulok, 65000, Thailand
| | - Chen Zhao
- School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
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Chen J, Li X, Wang F. Photocatalytic degradation performance of antibiotics by WO 3/α-Fe 2O 3/zeolite type II heterojunction with core-shell structure. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:119372-119384. [PMID: 37924409 DOI: 10.1007/s11356-023-30744-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/25/2023] [Indexed: 11/06/2023]
Abstract
The accumulation of antibiotics in the environment can be harmful to human health, and research on their disposal technologies is of increasing interest. In this study, WO3/α-Fe2O3/zeolite (WFZ) type II heterojunction composites with core-shell structures were prepared by coupling WO3 semiconductors with visible-light photocatalytic activity with α-Fe2O3 via hydrothermal synthesis using zeolite as a carrier for the adsorption of synergistic photocatalytic degradation of antibiotics in wastewater. X-ray diffraction, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), specific surface, and porosity measurements were used to characterize the structure of WFZ type II heterojunction. The performance of WFZ heterojunction for the visible photocatalytic degradation of antibiotics (tetracycline hydrochloride (TCH), ciprofloxacin (CIP), and levofloxacin hydrochloride (LVF)) was investigated. Through four photocatalytic cycles, the catalyst exhibited excellent durability and stability. This was attributed to the core-shell structure and type II heterojunction promoting the effective separation of photogenerated carriers and the extended visible light response range, which resulted in the best photocatalytic activity of the catalyst under visible light irradiation. Radical trapping experiments showed that superoxide radicals (•O2-) and hydroxyl radical (•OH) were the main active species that played a major role in the photocatalytic degradation. These findings show that the synthesized WFZ type-II heterojunction can be used as a reliable visible-light-responsive photocatalyst for the treatment of antibiotics in wastewater.
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Affiliation(s)
- Jiaqi Chen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China
| | - Xinjie Li
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China
| | - Fan Wang
- School of Engineering, Hangzhou Normal University, 2318 Yuhangtang Road, Hangzhou, 311121, China.
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Synthesis of Highly Efficient (0D/1D) Z-Scheme CdS-NPs@ZnO-NRs Visible-Light-Driven Photo(electro)catalyst for PEC Oxygen Evolution Reaction and Removal of Tetracycline. Catalysts 2022. [DOI: 10.3390/catal12121601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Herein, we synthesized the cadmium sulfide nanoparticles (CdS-NPs) coated zinc oxide nanorods (ZnO-NRs) core-shell like CdS-NPs@ZnO-NRs heterojunction for photo(electro)chemical applications. The CdS-NPs and ZnO-NRs were synthesized through a simple hydrothermal path. The physicochemical and optoelectronic properties of the as-prepared catalysts are characterized by various spectroscopy techniques, such as FTIR, XRD, SEM, TEM, EDX, VB-XPS, DRS, and PL. The photocatalytic performances of the CdS-NPs@ZnO-NRs catalyst were evaluated by photodegradation of tetracycline (TC) in aqueous media under visible-light irradiation, which demonstrated 94.07 % of removal (k’ = 0.0307 min−1) within 90 min. On the other hand, the photoelectrochemical (PEC) water-oxidation/oxygen-evolution reaction (OER) was performed, which resulted in the photocurrent density of 3.002 mA/cm2 and overpotential (at 2 mA/cm2) of 171 mV (vs RHE) in 1.0 M KOH under AM 1.5G illumination. The reactive species scavenging experiment demonstrates the significant contributions of photogenerated holes towards TC removal. Furthermore, the Z-scheme CdS-NPs@ZnO-NRs core-shell heterojunction exhibits high efficiency, recyclability, and photostability, demonstrating that the CdS-NPs@ZnO-NRs is a robust photo(electro)catalyst for visible-light PEC applications.
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Jung H, Sapner VS, Adhikari A, Sathe BR, Patel R. Recent Progress on Carbon Quantum Dots Based Photocatalysis. Front Chem 2022; 10:881495. [PMID: 35548671 PMCID: PMC9081694 DOI: 10.3389/fchem.2022.881495] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 03/07/2022] [Indexed: 12/03/2022] Open
Abstract
As a novel carbon allotrope, carbon quantum dots (CQDs) have been investigated in various fields, including photocatalysis, bioimaging, optoelectronics, energy and photovoltaic devices, biosensing, and drug delivery owing to their unique optical and electronic properties. In particular, CQDs' excellent sunlight harvesting ability, tunable photoluminescence (PL), up-conversion photoluminescence (UCPL), and efficient photo-excited electron transfer have enabled their applications in photocatalysis. This work focuses on the recent progress on CQDs-related materials' synthesis, properties, and applications in photocatalysis.
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Affiliation(s)
- Hwapyung Jung
- Nano Science and Engineering, Integrated Science and Engineering Division (ISED), Underwood International College, Yonsei University, Incheon, South Korea
| | - Vijay S. Sapner
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University Aurangabad, Seoul, South Korea
| | | | - Bhaskar R. Sathe
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University Aurangabad, Seoul, South Korea,*Correspondence: Bhaskar R. Sathe, ; Rajkumar Patel,
| | - Rajkumar Patel
- Energy and Environmental Science and Engineering (EESE), Integrated Science and Engineering Division (ISED), Underwood International College, Yonsei University, Incheon, South Korea,*Correspondence: Bhaskar R. Sathe, ; Rajkumar Patel,
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Shandilya P, Sambyal S, Sharma R, Mandyal P, Fang B. Properties, optimized morphologies, and advanced strategies for photocatalytic applications of WO 3 based photocatalysts. JOURNAL OF HAZARDOUS MATERIALS 2022; 428:128218. [PMID: 35030486 DOI: 10.1016/j.jhazmat.2022.128218] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/18/2021] [Accepted: 01/03/2022] [Indexed: 05/23/2023]
Abstract
The development of WO3 based photocatalysts has gained considerable attention across the world, especially in the realm of environmental remediation and energy production. WO3 has a band gap of 2.5- 2.7 eV that falls under the visible region and is thus a potential candidate to utilize in various photocatalytic processes. As an earth-abundant metal oxide, WO3 discovered in 1976 displayed excellent electronic and morphological properties, good stability, and enhanced photoactivity with diverse crystal phases. Also, it unveils non-toxicity, high stability in drastic conditions, biocompatibility, low cost, excellent hole mobility (10 cm2 V-1s-1), and tunable band gap. This review provides a comprehensive overview of the different properties of WO3 inclusive of crystallographic, electrical, optical, thermoelectrical, and ferroelectric properties. The different morphologies of WO3 based on dimensions were obtained by adopting different fabrication methods including inspecting their effects on the efficiency of WO3. Numerous strategies to construct an ideal photocatalyst such as engineering crystal facets, surface defects, doping, heterojunction formation explaining specifically type-II, Z-scheme, and S-scheme mechanisms with addition to carbonaceous based WO3 nanocomposites are summed up to explore the photocatalytic performance. The typical application of WO3 is deliberated in detail involving the role and efficiency of WO3 in pollutant degradation, CO2 photoreduction, and water splitting. Besides, other applications of WO3 as gas-sensor, bio-sensor, decomposition of VOCs, heavy metals ions adsorption, and antimicrobial property are also included. Moreover, the numerous aspects responsible for the high efficiency of WO3-based nanocomposites with their challenges, opportunities, and future aspects are summarized. Hopefully, this review may inspire researchers to explore new ideas to boost the production of clean energy for the next generation.
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Affiliation(s)
- Pooja Shandilya
- School of Advanced Chemical Sciences, Shoolini University, Solan, HP 173229, India.
| | - Shabnam Sambyal
- School of Advanced Chemical Sciences, Shoolini University, Solan, HP 173229, India
| | - Rohit Sharma
- School of Advanced Chemical Sciences, Shoolini University, Solan, HP 173229, India
| | - Parteek Mandyal
- School of Advanced Chemical Sciences, Shoolini University, Solan, HP 173229, India
| | - Baizeng Fang
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6P 1Z3, Canada.
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Domingo-Tafalla B, Martínez-Ferrero E, Franco F, Palomares-Gil E. Applications of Carbon Dots for the Photocatalytic and Electrocatalytic Reduction of CO 2. Molecules 2022; 27:1081. [PMID: 35164346 PMCID: PMC8840083 DOI: 10.3390/molecules27031081] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/27/2022] [Accepted: 01/31/2022] [Indexed: 02/04/2023] Open
Abstract
The photocatalytic and electrocatalytic conversion of CO2 has the potential to provide valuable products, such as chemicals or fuels of interest, at low cost while maintaining a circular carbon cycle. In this context, carbon dots possess optical and electrochemical properties that make them suitable candidates to participate in the reaction, either as a single component or forming part of more elaborate catalytic systems. In this review, we describe several strategies where the carbon dots participate, both with amorphous and graphitic structures, in the photocatalysis or electrochemical catalysis of CO2 to provide different carbon-containing products of interest. The role of the carbon dots is analyzed as a function of their redox and light absorption characteristics and their complementarity with other known catalytic systems. Moreover, detailed information about synthetic procedures is also reviewed.
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Affiliation(s)
- Beatriu Domingo-Tafalla
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology (ICIQ-BIST), Avda. Països Catalans, 16, E-43007 Tarragona, Spain; (B.D.-T.); (E.M.-F.)
- Departament d’Enginyeria Electrònica, Elèctrica i Automàtica, Universitat Rovira i Virgili, Avda. Països Catalans, 26, E-43007 Tarragona, Spain
| | - Eugenia Martínez-Ferrero
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology (ICIQ-BIST), Avda. Països Catalans, 16, E-43007 Tarragona, Spain; (B.D.-T.); (E.M.-F.)
| | - Federico Franco
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology (ICIQ-BIST), Avda. Països Catalans, 16, E-43007 Tarragona, Spain; (B.D.-T.); (E.M.-F.)
| | - Emilio Palomares-Gil
- Institute of Chemical Research of Catalonia, The Barcelona Institute of Science and Technology (ICIQ-BIST), Avda. Països Catalans, 16, E-43007 Tarragona, Spain; (B.D.-T.); (E.M.-F.)
- ICREA, Passeig Lluís Companys 23, E08010 Barcelona, Spain
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Ren S, Liu B, Han G, Zhao H, Zhang Y. Surface chemistry in calcium capped carbon quantum dots. NANOSCALE 2021; 13:12149-12156. [PMID: 34231641 DOI: 10.1039/d1nr02763h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Colloidal carbon quantum dots (C-dots) have attracted a lot of attention because of their excellent optical properties for various types of applications. Due to the complicated structure of C-dots, the photoluminescence (PL) mechanism of C-dots is still unclear. In particular, it is still a big challenge to understand well the surface chemistry of C-dots. In this work, we used a vacuum-heating approach to produce high-quality C-dots. With different purification procedures, the surface chemistry of C-dots can be well-controlled. Removal of Ca2+ by Na2CO3 led to the disappearance of the absorption at 405 nm and a decrease of the quantum yield. In addition, the Na2CO3 treated C-dots exhibited an excitation-dependent PL behavior. These results confirmed that Ca2+ can interact with the surface functional group of C[double bond, length as m-dash]O of the C-dots, forming a stable structure surrounding the C-dot core, which contributed to a high quantum yield (QY) of 65%, excitation-independent PL behavior and absorption at 405 nm. Furthermore, the PL of the C-dots is strongly dependent on the pH, indicating that the Ca2+ capped C-dots could be used as pH indicators. Our finding provides clear evidence for the surface-chemistry dependent PL behavior of C-dots.
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Affiliation(s)
- Shihuan Ren
- College of Textiles & Clothing, Qingdao University, No. 308 Ningxia Road, Qingdao 266071, P. R. China
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Li Q, Zhang H, Yan Y, Yang Z, Wang Y, Liu G, Ni T. Tunable and sustainable photocatalytic activity of photochromic Y-WO 3 under visible light irradiation. RSC Adv 2020; 11:1147-1152. [PMID: 35423720 PMCID: PMC8693858 DOI: 10.1039/d0ra09714d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 12/16/2020] [Indexed: 11/29/2022] Open
Abstract
Although photochromic and photocatalytic performance are the most significant features of WO3, the effects of photochromism on photocatalytic activities have not been investigated further. Herein, a novel gear-shaped WO3, with high coloration efficiency, fast reversibility, and remarkable photocatalytic performance was successfully prepared via a facile hydrothermal method. The influence of photochromic effects on its photocatalytic properties was evaluated under visible light irradiation. The results showed that the yellow WO3 sample exhibited higher photocatalytic efficiencies toward tetracycline hydrochloride (TCH), oxytetracycline (OTC), rhodamine B (RhB), and ciprofloxacin (CIP) (94.3%, 87.9%, 76%, and 68.6%, respectively, in 60 min). Further research found that the redox conversion between W6+ and W5+ played a key role in separating e-/h+ pairs. Importantly, the rapid and reversible conversion between W6+ and W5+ could be realized through light radiation or H2O2 treatment. Therefore, the gear-shaped WO3 possessed tunable and sustainable photocatalytic properties and maintained a high level of activity after recycling ten times under visible light irradiation. This work provides new insights into practical WO3 applications for environmental remediation based on photochromic regulation.
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Affiliation(s)
- Qiansheng Li
- School of Basic Medical Science, Xinxiang Medical University Xinxiang 453003 China
| | - Hui Zhang
- School of Basic Medical Science, Xinxiang Medical University Xinxiang 453003 China
| | - Yunhui Yan
- School of Basic Medical Science, Xinxiang Medical University Xinxiang 453003 China
| | - Zhijun Yang
- School of Basic Medical Science, Xinxiang Medical University Xinxiang 453003 China
| | - Yingling Wang
- School of Basic Medical Science, Xinxiang Medical University Xinxiang 453003 China
| | - Guoguang Liu
- School of Environment, Henan Normal University Xinxiang 453007 China
- Faculty of Environmental Science and Engineering, Guangdong University of Technology Guangzhou 510006 China
| | - Tianjun Ni
- School of Basic Medical Science, Xinxiang Medical University Xinxiang 453003 China
- School of Environment, Henan Normal University Xinxiang 453007 China
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