Carbon dot enhanced peroxidase-like activity of platinum nanozymes
As one of the most intriguing nanozymes, the platinum (Pt) nanozyme has attracted tremendous research interest due to its various catalytic activities but its application is still limited by its poor colloidal stability and low affinity to substrates. Here, we design a highly stable Pt@carbon dot (P...
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Published in | Nanoscale Vol. 16; no. 9; pp. 4637 - 4646 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Royal Society of Chemistry
29.02.2024
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Subjects | |
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Abstract | As one of the most intriguing nanozymes, the platinum (Pt) nanozyme has attracted tremendous research interest due to its various catalytic activities but its application is still limited by its poor colloidal stability and low affinity to substrates. Here, we design a highly stable Pt@carbon dot (Pt@CD) hybrid nanozyme with enhanced peroxidase (POD)-like activity (specific activity of 1877 U mg
−1
). The Pt@CDs catalyze the decomposition of hydrogen peroxide (H
2
O
2
) to produce singlet oxygen and hydroxyl radicals and exhibit high affinity to H
2
O
2
and high specificity to 3,3′,5,5′-tetramethyl-benzidine. We reveal that both the hydroxyl and carbonyl groups of CDs could coordinate with Pt
2+
and then regulate the charge state of the Pt nanozyme, facilitating the formation of Pt@CDs and improving the POD-like activity of Pt@CDs. Colorimetric detection assays based on Pt@CDs for H
2
O
2
, dopamine, and glucose with a satisfactory detection performance are achieved. Moreover, the Pt@CDs show a H
2
O
2
-involving antibacterial effect by destroying the cell membrane. Our findings provide new opportunities for designing hybrid nanozymes with desirable stability and catalytic performance by using CDs as nucleating templates and stabilizers.
Carbon dots regulate the charge state of Pt nanozymes, enhancing the peroxidase-like activity of Pt@carbon and achieving colorimetric detection assays for hydrogen peroxide, dopamine, and glucose as well as the antibacterial effect. |
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AbstractList | As one of the most intriguing nanozymes, the platinum (Pt) nanozyme has attracted tremendous research interest due to its various catalytic activities but its application is still limited by its poor colloidal stability and low affinity to substrates. Here, we design a highly stable Pt@carbon dot (Pt@CD) hybrid nanozyme with enhanced peroxidase (POD)-like activity (specific activity of 1877 U mg
). The Pt@CDs catalyze the decomposition of hydrogen peroxide (H
O
) to produce singlet oxygen and hydroxyl radicals and exhibit high affinity to H
O
and high specificity to 3,3',5,5'-tetramethyl-benzidine. We reveal that both the hydroxyl and carbonyl groups of CDs could coordinate with Pt
and then regulate the charge state of the Pt nanozyme, facilitating the formation of Pt@CDs and improving the POD-like activity of Pt@CDs. Colorimetric detection assays based on Pt@CDs for H
O
, dopamine, and glucose with a satisfactory detection performance are achieved. Moreover, the Pt@CDs show a H
O
-involving antibacterial effect by destroying the cell membrane. Our findings provide new opportunities for designing hybrid nanozymes with desirable stability and catalytic performance by using CDs as nucleating templates and stabilizers. As one of the most intriguing nanozymes, the platinum (Pt) nanozyme has attracted tremendous research interest due to its various catalytic activities but its application is still limited by its poor colloidal stability and low affinity to substrates. Here, we design a highly stable Pt@carbon dot (Pt@CD) hybrid nanozyme with enhanced peroxidase (POD)-like activity (specific activity of 1877 U mg-1). The Pt@CDs catalyze the decomposition of hydrogen peroxide (H2O2) to produce singlet oxygen and hydroxyl radicals and exhibit high affinity to H2O2 and high specificity to 3,3',5,5'-tetramethyl-benzidine. We reveal that both the hydroxyl and carbonyl groups of CDs could coordinate with Pt2+ and then regulate the charge state of the Pt nanozyme, facilitating the formation of Pt@CDs and improving the POD-like activity of Pt@CDs. Colorimetric detection assays based on Pt@CDs for H2O2, dopamine, and glucose with a satisfactory detection performance are achieved. Moreover, the Pt@CDs show a H2O2-involving antibacterial effect by destroying the cell membrane. Our findings provide new opportunities for designing hybrid nanozymes with desirable stability and catalytic performance by using CDs as nucleating templates and stabilizers. As one of the most intriguing nanozymes, the platinum (Pt) nanozyme has attracted tremendous research interest due to its various catalytic activities but its application is still limited by its poor colloidal stability and low affinity to substrates. Here, we design a highly stable Pt@carbon dot (Pt@CD) hybrid nanozyme with enhanced peroxidase (POD)-like activity (specific activity of 1877 U mg −1 ). The Pt@CDs catalyze the decomposition of hydrogen peroxide (H 2 O 2 ) to produce singlet oxygen and hydroxyl radicals and exhibit high affinity to H 2 O 2 and high specificity to 3,3′,5,5′-tetramethyl-benzidine. We reveal that both the hydroxyl and carbonyl groups of CDs could coordinate with Pt 2+ and then regulate the charge state of the Pt nanozyme, facilitating the formation of Pt@CDs and improving the POD-like activity of Pt@CDs. Colorimetric detection assays based on Pt@CDs for H 2 O 2 , dopamine, and glucose with a satisfactory detection performance are achieved. Moreover, the Pt@CDs show a H 2 O 2 -involving antibacterial effect by destroying the cell membrane. Our findings provide new opportunities for designing hybrid nanozymes with desirable stability and catalytic performance by using CDs as nucleating templates and stabilizers. As one of the most intriguing nanozymes, the platinum (Pt) nanozyme has attracted tremendous research interest due to its various catalytic activities but its application is still limited by its poor colloidal stability and low affinity to substrates. Here, we design a highly stable Pt@carbon dot (Pt@CD) hybrid nanozyme with enhanced peroxidase (POD)-like activity (specific activity of 1877 U mg−1). The Pt@CDs catalyze the decomposition of hydrogen peroxide (H2O2) to produce singlet oxygen and hydroxyl radicals and exhibit high affinity to H2O2 and high specificity to 3,3′,5,5′-tetramethyl-benzidine. We reveal that both the hydroxyl and carbonyl groups of CDs could coordinate with Pt2+ and then regulate the charge state of the Pt nanozyme, facilitating the formation of Pt@CDs and improving the POD-like activity of Pt@CDs. Colorimetric detection assays based on Pt@CDs for H2O2, dopamine, and glucose with a satisfactory detection performance are achieved. Moreover, the Pt@CDs show a H2O2-involving antibacterial effect by destroying the cell membrane. Our findings provide new opportunities for designing hybrid nanozymes with desirable stability and catalytic performance by using CDs as nucleating templates and stabilizers. As one of the most intriguing nanozymes, the platinum (Pt) nanozyme has attracted tremendous research interest due to its various catalytic activities but its application is still limited by its poor colloidal stability and low affinity to substrates. Here, we design a highly stable Pt@carbon dot (Pt@CD) hybrid nanozyme with enhanced peroxidase (POD)-like activity (specific activity of 1877 U mg −1 ). The Pt@CDs catalyze the decomposition of hydrogen peroxide (H 2 O 2 ) to produce singlet oxygen and hydroxyl radicals and exhibit high affinity to H 2 O 2 and high specificity to 3,3′,5,5′-tetramethyl-benzidine. We reveal that both the hydroxyl and carbonyl groups of CDs could coordinate with Pt 2+ and then regulate the charge state of the Pt nanozyme, facilitating the formation of Pt@CDs and improving the POD-like activity of Pt@CDs. Colorimetric detection assays based on Pt@CDs for H 2 O 2 , dopamine, and glucose with a satisfactory detection performance are achieved. Moreover, the Pt@CDs show a H 2 O 2 -involving antibacterial effect by destroying the cell membrane. Our findings provide new opportunities for designing hybrid nanozymes with desirable stability and catalytic performance by using CDs as nucleating templates and stabilizers. Carbon dots regulate the charge state of Pt nanozymes, enhancing the peroxidase-like activity of Pt@carbon and achieving colorimetric detection assays for hydrogen peroxide, dopamine, and glucose as well as the antibacterial effect. |
Author | Yang, Wenwen Liu, Cui Gao, Wenhui Fan, Xing Hu, Jiao Zhang, Mingzhen Shi, Jinyu Chen, Yiming Cheng, Liangliang Luo, Qing-Ying |
AuthorAffiliation | Shenzhen Polytechnic University Innovative Drug Research Center Chongqing Key Laboratory of Natural Product Synthesis and Drug Research the First Affiliated Hospital of Xi'an Jiaotong University Xi'an Key Laboratory of Immune Related Diseases Xi'an Jiaotong University Health Science Center School of Environment and Health School of Chemical Science and Technology Chongqing University Guizhou Normal University Department of Pathology School of Pharmaceutical Sciences Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances Jianghan University School of Basic Medical Sciences School of Life Sciences Yunnan University School of Food and Drug |
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Cites_doi | 10.1039/C8CS00457A 10.1016/j.trac.2011.04.009 10.1007/s41664-019-00108-w 10.1002/smll.202002348 10.1002/EXP.20210086 10.1079/WPS200480 10.1021/acs.bioconjchem.7b00673 10.1021/acsnano.2c00008 10.1039/C8CC01202D 10.1021/acsami.9b04144 10.1016/j.bios.2015.05.025 10.1002/EXP.20210005 10.1002/adma.201204419 10.1038/s41596-018-0001-1 10.1021/acs.analchem.8b03807 10.1021/acsanm.1c00752 10.1021/acsanm.1c01457 10.1007/BF02582143 10.1007/s00604-019-3939-y 10.1021/acsanm.1c01215 10.1039/c2nr12109c 10.1016/j.jcis.2022.03.028 10.1016/j.microc.2020.105872 10.1021/acsomega.0c05747 10.1039/D1TB00425E 10.1016/j.aca.2020.12.041 10.1007/s12598-023-02309-w 10.1002/EXP.20210089 10.1038/nature12709 10.1021/acs.chemmater.8b02365 10.1002/anie.201706910 10.2337/dc10-0666 10.1016/j.nantod.2016.08.006 10.1016/j.bios.2014.11.032 10.1039/C4CS00269E 10.1021/jacs.1c08581 10.1038/ncomms13267 10.1007/s00604-013-1068-6 10.1021/ar400023s 10.1002/adfm.202213856 10.1021/acs.jpclett.9b01339 10.1021/jp503242e 10.1038/nnano.2012.91 10.1021/acs.chemrev.8b00672 10.1021/ja0468224 10.1007/s11427-016-5044-3 10.1016/j.bios.2018.03.045 10.1002/adma.202300387 10.1007/s10562-017-2106-5 10.1016/j.biomaterials.2010.11.004 10.1021/acs.nanolett.1c04454 10.1021/jacs.5b12070 10.1016/j.nantod.2023.101768 10.1016/j.trac.2019.115653 10.1038/s41467-023-35828-2 10.1002/anie.201500626 10.1016/j.colsurfb.2021.111783 10.1038/nnano.2007.260 10.1039/C5CC00040H |
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Notes | https://doi.org/10.1039/d3nr04964g Angew. Chem. Adv. Funct. Mater. Nano Today She has published >30 journal papers in Exploration Nat. Commun. and other leading journals with >2000 citations. , Electronic supplementary information (ESI) available. See DOI Dr Cui Liu obtained her Ph.D. in analytical chemistry at Wuhan University in 2017. She is currently an associate professor at Chongqing University. Her research focuses on the synthesis, functionalization, catalytic mechanism, and applications of carbon dot nanozymes. Dr Liu serves as an academic editor of ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
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SubjectTerms | Affinity Carbon dots Carbonyl groups Carbonyls Cell membranes Dopamine Hydrogen peroxide Hydroxyl radicals Peroxidase Platinum Singlet oxygen Stability Substrates |
Title | Carbon dot enhanced peroxidase-like activity of platinum nanozymes |
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