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Trang TD, Khiem TC, Huy NN, Huang CW, Ghotekar S, Chen WH, Oh WD, Lin KYA. Magnetic raspberry-like CuCo nanoalloy-embedded carbon as an enhanced activator of Oxone to degrade azo contaminant: Cu-induced hollowed structure and boosted activities. J Colloid Interface Sci 2024; 675:275-292. [PMID: 38970913 DOI: 10.1016/j.jcis.2024.06.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 06/14/2024] [Accepted: 06/23/2024] [Indexed: 07/08/2024]
Abstract
Azo compounds, particularly azo dyes, are widely used but pose significant environmental risks due to their persistence and potential to form carcinogenic by-products. Advanced oxidation processes (AOPs) are effective in degrading these stubborn compounds, with Oxone activation being a particularly promising method. In this study, a unique nanohybrid material, raspberry-like CuCo alloy embedded carbon (RCCC), is facilely fabricated using CuCo-glycerate (Gly) as a template. With the incorporation of Cu into Co, RCCC is essentially different from its analogue derived from Co-Gly in the absence of Cu, affording a popcorn-like Co embedded on carbon (PCoC). RCCC exhibits a unique morphology, featuring a hollow spherical layer covered by nanoscale beads composed of CuCo alloy distributed over carbon. Therefore, RCCC significantly outperforms PCoC and Co3O4 for activating Oxone to degrade the toxic azo contaminant, Azorubin S (AS), in terms of efficiency and kinetics. Furthermore, RCCC remains highly effective in environments with high NaCl concentrations and can be efficiently reused across multiple cycles. Besides, RCCC also leads to the considerably lower Ea of AS degradation than the reported Ea values by other catalysts. More importantly, the contribution of incorporating Cu with Co as CuCo alloy in RCCC is also elucidated using the Density-Function-Theory (DFT) calculation and synergetic effect of Cu and Co in CuCo contributes to enhance Oxone activation, and boosts generation of SO4•-and •OH. The decomposition pathway of AS by RCCC + Oxone is also comprehensively investigated by studying the Fukui indices of AS and a series of its degradation by-products using the DFT calculation. In accordance to the toxicity assessment, RCCC + Oxone also considerably reduces acute and chronic toxicities to lower potential environmental impact. These results ensure that RCCC would be an advantageous catalyst for Oxone activation to degrade AS in water.
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Affiliation(s)
- Tran Doan Trang
- Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Ta Cong Khiem
- Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, Taichung, Taiwan, ROC
| | - Nguyen Nhat Huy
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Viet Nam; Vietnam National University Ho Chi Minh City (VNU-HCM), Ho Chi Minh City 700000, Viet Nam
| | - Chao-Wei Huang
- Department of Engineering Science, National Cheng Kung University, Tainan 70101, Taiwan, ROC
| | - Suresh Ghotekar
- Centre for Herbal Pharmacology and Environmental Sustainability, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam 603103, Tamil Nadu, India
| | - Wei-Hsin Chen
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan, ROC; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan, ROC; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan, ROC
| | - Wen Da Oh
- School of Chemical Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia.
| | - Kun-Yi Andrew Lin
- Department of Environmental Engineering & Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, Taichung, Taiwan, ROC; Institute of Analytical and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan, ROC; Department of Chemical Engineering, Chung Yuan Christian University, Chungli District, Taoyuan 320, Taiwan, ROC.
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2
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Pan Y, Dong Z, Qin D, Liu B, Cui L, Han S, Lin H. Constructing Sequential Type II Heterojunction CQDs/Bi 2S 3/TiNbO Photoanode with Superior Charge Transfer Capability Toward Stable Photoelectrochemical Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2024; 16:16062-16074. [PMID: 38526168 DOI: 10.1021/acsami.3c17726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Efficient charge transfer and light-trapping units are pivotal prerequisites in the realm of Ti-based photoanode photoelectrochemical (PEC) water splitting. In this work, we successfully synthesized a ternary carbon quantum dots/Bi2S3 quantum dots/Nb-doped TiO2 nanotube arrays (CQDs/Bi2S3/TiNbO) composite photoanode for PEC water splitting. CQDs/Bi2S3/TiNbO composite photoanode exhibited a considerably elevated photocurrent density of 8.80 mA cm-2 at 1.23 V vs the reversible hydrogen electrode, which was 20.00 times better than that of TiO2 (0.44 mA cm-2). Furthermore, the CQDs/Bi2S3/TiNbO composite photoanode attested to exceptional stability, maintaining 92.54% of its initial current after 5 h of stability measurement. Nb-doping boosted the electrical conductivity, facilitating charge transfer at the solid-liquid interface. Moderate amounts of Bi2S3 quantum dots (QDs) and CQDs deposited on TiNbO provided abundant active sites for the electrolyte-photoanode interaction. Simultaneously, Bi2S3 QDs and CQDs synergistically functioned as light-trapping units to broaden the light absorption range from 396 to 530 nm, stimulating increased carrier generation within the composite photoanode. In comparison with pristine TiO, CQDs/Bi2S3/TiNbO photoanodes possessed a superior ability to promote interfacial reactions. This study may provide a strategy for developing high-performance Ti-based photoanodes with efficient charge transfer and light trapping units for highly driving solar-to-hydrogen conversion.
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Affiliation(s)
- Yanjie Pan
- Shanghai Institute of Technology, Shanghai 201418, China
| | - Zhenbiao Dong
- Shanghai Institute of Technology, Shanghai 201418, China
| | - Dongmei Qin
- Shanghai Institute of Technology, Shanghai 201418, China
| | - Baopeng Liu
- Shanghai Institute of Technology, Shanghai 201418, China
| | - Lulu Cui
- Shanghai Institute of Technology, Shanghai 201418, China
| | - Sheng Han
- Shanghai Institute of Technology, Shanghai 201418, China
- Shihezi University, Xinjiang 832003, China
| | - Hualin Lin
- Shanghai Institute of Technology, Shanghai 201418, China
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He Q, Wang B, Liu J, Li G, Long Y, Zhang G, Liu H. Nickel/nitrogen-doped carbon nanocomposites: Synthesis and electrochemical sensor for determination of p-nitrophenol in local environment. ENVIRONMENTAL RESEARCH 2022; 214:114007. [PMID: 35934146 DOI: 10.1016/j.envres.2022.114007] [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: 03/20/2022] [Revised: 07/14/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
A novel electrochemical sensor was prepared using N-doped carbon mesoporous materials supported with nickel nanoparticles (Ni-NCs) for environmental p-nitrophenol (p-NP) detection in a specific geographical area. These as-prepared Ni-NCs were dispersed in polyethyleneimine (PEI) solution and modified onto a glassy carbon electrode (GCE) for electrocatalytic reduction of p-NP. The Ni-NCs-PEI/GCE showed a high Faraday current at -0.302 V during p-NP reduction, because of the synergistic effect between Ni-NCs and PEI. Under ideal conditions, the Ni-NCs-PEI/GCE was used in the voltametric determination of p-NP, with high sensitivity. The linear ranges for p-NP are 0.06-10 μM and 10-100 μM with low detection limit (4.0 nM) and high sensitivity (1.465 μA μM-1 cm-2). In the presence of other phenolic compounds, this sensor showed good selectivity for p-NP detection. The Ni-NCs-PEI/GCE was also used to determine p-NP in environmental water samples of a specific geographical area, with recoveries ranging from 95.9% to 109.4%, and an RSD of less than 3.6%. Therefore, this novel Ni-NCs-PEI/GCE provides a good example for the design of other carbon-based nanocomposite materials, for electrochemical detection of trace p-NP in a specific geographical area.
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Affiliation(s)
- Quanguo He
- School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China; School of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, 412007, China
| | - Bing Wang
- School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China; Engineering Research Center of Medical Biotechnology, Guizhou Medical University, Guiyang, 550025, Guizhou, China
| | - Jun Liu
- School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China; School of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, 412007, China.
| | - Guangli Li
- School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China; School of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, 412007, China
| | - Yaohang Long
- School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China; Engineering Research Center of Medical Biotechnology, Guizhou Medical University, Guiyang, 550025, Guizhou, China
| | - Gongyou Zhang
- School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China; Engineering Research Center of Medical Biotechnology, Guizhou Medical University, Guiyang, 550025, Guizhou, China
| | - Hongmei Liu
- School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China; Engineering Research Center of Medical Biotechnology, Guizhou Medical University, Guiyang, 550025, Guizhou, China.
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4
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Wu S, Wang X, Bai J, Zhu Y, Yu X, Qin F, He P, Ren L. Influence of Nitrogen-Doped Carbon Quantum Dots on the Electrocatalytic Performance of the CoP Nanoflower Catalyst for OER. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:11210-11218. [PMID: 36084196 DOI: 10.1021/acs.langmuir.2c01225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Cobalt phosphides modified by nitrogen-doped carbon quantum dots (CoP-NCQDs) were successfully constructed by a facile and low-cost hydrothermal treatment, which is expected to replace traditional noble-metal oxygen evolution reaction electrode materials. Detailed experiments and findings show that nitrogen-doped carbon quantum dots (NCQDs) have a significant impact on the morphology of the CoP catalyst, and nitrogen doping can regulate the surface-active sites to obtain the catalyst with abundant structural defects. Simultaneously, nitrogen doping can regulate the content of pyridinic N and pyrrolic N, which exerts positive effects on the formation of the bond structure and electron conduction between NCQDs and CoP.
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Affiliation(s)
- Shuang Wu
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Xinyu Wang
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Jianliang Bai
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yaqing Zhu
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Xu Yu
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Fu Qin
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Pinyi He
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Lili Ren
- School of Chemistry & Chemical Engineering, Southeast University, Nanjing 211189, China
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5
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TiO2 nanoarrays modification by a novel Cobalt-heteroatom doped graphene complex for photoelectrochemical water splitting: An experimental and theoretical study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Xu Q, Cai H, Li W, Wu M, Wu Y, Gong X. Carbon dot/inorganic nanomaterial composites. JOURNAL OF MATERIALS CHEMISTRY A 2022. [DOI: 10.1039/d2ta02628g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The preparation methods, formation mechanism, properties and applications of carbon dot/inorganic nanohybrid materials are reported.
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Affiliation(s)
- Qingqing Xu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Huawei Cai
- Laboratory of Clinical Nuclear Medicine, Department of Nuclear Medicine, West China Hospital, Sichuan University, 610041, Chengdu, China
| | - Wenjing Li
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Min Wu
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yongzhong Wu
- School of Mechanical Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xiao Gong
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
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7
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Copper oxide doped composite nanospheres decorated graphite pencil toward efficient hydrogen evolution electrocatalysis. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116084] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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8
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Ghouri ZK, Badreldin A, Elsaid K, Kumar D, Youssef K, Abdel-Wahab A. Theoretical and experimental investigations of Co-Cu bimetallic alloys-incorporated carbon nanowires as an efficient bi-functional electrocatalyst for water splitting. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.01.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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A cost-saving preparation of nickel nanoparticles/nitrogen-carbon nanohybrid as effective advanced electrode materials for highly sensitive tryptophan sensor. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105744] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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10
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Knoblauch R, Geddes CD. Carbon Nanodots in Photodynamic Antimicrobial Therapy: A Review. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4004. [PMID: 32927673 PMCID: PMC7559411 DOI: 10.3390/ma13184004] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/24/2020] [Accepted: 08/25/2020] [Indexed: 02/08/2023]
Abstract
Antibiotic resistance development in bacteria is an ever-increasing global health concern as new resistant strains and/or resistance mechanisms emerge each day, out-pacing the discovery of novel antibiotics. Increasingly, research focuses on alternate techniques, such as antimicrobial photodynamic therapy (APDT) or photocatalytic disinfection, to combat pathogens even before infection occurs. Small molecule "photosensitizers" have been developed to date for this application, using light energy to inflict damage and death on nearby pathogens via the generation of reactive oxygen species (ROS). These molecular agents are frequently limited in widespread application by synthetic expense and complexity. Carbon dots, or fluorescent, quasi-spherical nanoparticle structures, provide an inexpensive and "green" solution for a new class of APDT photosensitizers. To date, reviews have examined the overall antimicrobial properties of carbon dot structures. Herein we provide a focused review on the recent progress for carbon nanodots in photodynamic disinfection, highlighting select studies of carbon dots as intrinsic photosensitizers, structural tuning strategies for optimization, and their use in hybrid disinfection systems and materials. Limitations and challenges are also discussed, and contemporary experimental strategies presented. This review provides a focused foundation for which APDT using carbon dots may be expanded in future research, ultimately on a global scale.
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Affiliation(s)
| | - Chris D. Geddes
- Institute of Fluorescence and Department of Chemistry and Biochemistry, University of Maryland, Baltimore County, 701 East Pratt Street, Baltimore, MD 21202, USA;
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