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Yu W, Li Q, Ren J, Feng K, Gong J, Li Z, Zhang J, Liu X, Xu Z, Yang L. A sensor platform based on SERS detection/janus textile for sweat glucose and lactate analysis toward portable monitoring of wellness status. Biosens Bioelectron 2024; 263:116612. [PMID: 39096763 DOI: 10.1016/j.bios.2024.116612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 07/22/2024] [Accepted: 07/26/2024] [Indexed: 08/05/2024]
Abstract
Herein we report a wearable sweat sensor of a Janus fabric based on surface enhanced Raman scattering (SERS) technology, mainly detecting the two important metabolites glucose and lactate. Janus fabric is composed of electrospinning PU on a piece of medical gauze (cotton), working as the unidirectional moisture transport component (R = 1305%) to collect and transfer sweat efficiently. SERS tags with different structures act as the probe to recognize and detect the glucose and lactate in high sensitivity. Core-shell structured gold nanorods with DTNB inside (AuNRs@DTNB@Au) are used to detect lactate, while gold nanorods with MPBA (AuNRs@MPBA) are used to detect glucose. Through the characteristic SERS information, two calibration functions were established for the concentration determination of glucose and lactate. The concentrations of glucose and lactate in sweat of a 23 years volunteer during three-stage interval running are tested to be 95.5, 53.2, 30.5 μM and 4.9, 13.9, 10.8 mM, indicating the glucose (energy) consumption during exercise and the rapid accumulation of lactate at the early stage accompanied by the subsequent relief. As expected, this sensing system is able to provide a novel strategy for effective acquisition and rapid detection of essential biomarkers in sweat.
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Affiliation(s)
- Wenze Yu
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites, Ministry of Education, Tiangong University, Tianjin, 300387, China
| | - Qiujin Li
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites, Ministry of Education, Tiangong University, Tianjin, 300387, China; National Innovation Center of Advanced Dyeing & Finishing Technology, Tai'an, Shandong, 271000, China.
| | - Jianing Ren
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites, Ministry of Education, Tiangong University, Tianjin, 300387, China
| | - Kexin Feng
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites, Ministry of Education, Tiangong University, Tianjin, 300387, China
| | - Jixian Gong
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites, Ministry of Education, Tiangong University, Tianjin, 300387, China; National Innovation Center of Advanced Dyeing & Finishing Technology, Tai'an, Shandong, 271000, China
| | - Zheng Li
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites, Ministry of Education, Tiangong University, Tianjin, 300387, China
| | - Jianfei Zhang
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites, Ministry of Education, Tiangong University, Tianjin, 300387, China; National Innovation Center of Advanced Dyeing & Finishing Technology, Tai'an, Shandong, 271000, China; Collaborative Innovation Center for Eco-Textiles of Shandong Province, Shandong, Qingdao, 266071, China
| | - Xiuming Liu
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites, Ministry of Education, Tiangong University, Tianjin, 300387, China
| | - Zhiwei Xu
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites, Ministry of Education, Tiangong University, Tianjin, 300387, China
| | - Li Yang
- School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China; Key Laboratory of Advanced Textile Composites, Ministry of Education, Tiangong University, Tianjin, 300387, China
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Guan PC, Qi QJ, Wang YQ, Lin JS, Zhang YJ, Li JF. Development of a 3D Hydrogel SERS Chip for Noninvasive, Real-Time pH and Glucose Monitoring in Sweat. ACS APPLIED MATERIALS & INTERFACES 2024; 16:48139-48146. [PMID: 39197856 DOI: 10.1021/acsami.4c10817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2024]
Abstract
Traditional diagnostic methods, such as blood tests, are invasive and time-consuming, while sweat biomarkers offer a rapid physiological assessment. Surface-enhanced Raman spectroscopy (SERS) has garnered significant attention in sweat analysis because of its high sensitivity, label-free nature, and nondestructive properties. However, challenges related to substrate reproducibility and interference from the biological matrix persist with SERS. This study developed a novel ratio-based 3D hydrogel SERS chip, providing a noninvasive solution for real-time monitoring of pH and glucose levels in sweat. Encapsulating the probe molecule (4-MBN) in nanoscale gaps to form gold nanoflower-like nanotags with internal standards and integrating them into an agarose hydrogel to create a 3D flexible SERS substrate significantly enhances the reproducibility and stability of sweat analysis. Gap-Au nanopetals modified with probe molecules are uniformly dispersed throughout the porous hydrogel structure, facilitating the effective detection of the pH and glucose in sweat. The 3D hydrogel SERS chip demonstrates a strong linear relationship in pH and glucose detection, with a pH response range of 5.5-8.0 and a glucose detection range of 0.01-5 mM, with R2 values of 0.9973 and 0.9923, respectively. In actual sweat samples, the maximum error in pH detection accuracy is only 1.13%, with a lower glucose detection limit of 0.25 mM. This study suggests that the ratio-based 3D hydrogel SERS chip provides convenient, reliable, and rapid detection capabilities with substantial application potential for analyzing body fluid pH and glucose.
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Affiliation(s)
- Peng-Cheng Guan
- College of Materials, College of Energy, State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Qian-Jiao Qi
- College of Materials, College of Energy, State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yu-Qing Wang
- College of Materials, College of Energy, State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jia-Sheng Lin
- College of Materials, College of Energy, State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yue-Jiao Zhang
- College of Materials, College of Energy, State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Jian-Feng Li
- College of Materials, College of Energy, State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
- Scientific Research Foundation of State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, Xiamen 361005, China
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Zhao Y, Nie F, Liu W, He W, Guo Y. Preparation and exploration of anti-tumor activity of Poria cocos polysaccharide gold nanorods. Int J Biol Macromol 2024:135347. [PMID: 39260657 DOI: 10.1016/j.ijbiomac.2024.135347] [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: 04/28/2024] [Revised: 08/26/2024] [Accepted: 09/03/2024] [Indexed: 09/13/2024]
Abstract
With the continuous advancement of nanotechnology, the application of gold nanorods (AuNRs) functionalized with polysaccharides in the realm of cancer photothermal therapy is garnering increasing attention. To harness photothermal therapy for cancer treatment, FLP-MPBA-AuNRs were successfully synthesized in this study for the first time, utilizing Poria cocos polysaccharides (FLP), mercaptophenylboronic acid (MPBA), and gold nanorods (AuNRs). FLP-MPBA-AuNRs is a nanomaterial characterized by a unique rod-shaped structure, featuring a long diameter of 29.3 nm and a short diameter of 6.5 nm, which conferred upon it exceptional photothermal stability and remarkable photothermal conversion efficiency. Under near-infrared light irradiation, FLP-MPBA-AuNRs elicited significant photothermal effects, effectively curtailing the proliferation of various cancer cells. Additionally, it impeded cancer progression by inducing cell apoptosis and releasing reactive oxygen species (ROS). Furthermore, FLP-MPBA-AuNRs suppressed the metastasis and growth of cancer cells in zebrafish models. In summary, FLP-MPBA-AuNRs showcased immense potential in cancer therapy by inhibiting tumor cell growth through photothermal and photodynamic mechanisms.
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Affiliation(s)
- Yinan Zhao
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China
| | - Fan Nie
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China
| | - Wenhui Liu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China
| | - Wenrui He
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China
| | - Yuanqiang Guo
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300350, People's Republic of China.
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Cho HS, Noh MS, Kim YH, Namgung J, Yoo K, Shin MS, Yang CH, Kim YJ, Yu SJ, Chang H, Rho WY, Jun BH. Recent Studies on Metal-Embedded Silica Nanoparticles for Biological Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:268. [PMID: 38334538 PMCID: PMC10856399 DOI: 10.3390/nano14030268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/18/2024] [Accepted: 01/23/2024] [Indexed: 02/10/2024]
Abstract
Recently, silica nanoparticles (NPs) have attracted considerable attention as biocompatible and stable templates for embedding noble metals. Noble-metal-embedded silica NPs utilize the exceptional optical properties of novel metals while overcoming the limitations of individual novel metal NPs. In addition, the structure of metal-embedded silica NPs decorated with small metal NPs around the silica core results in strong signal enhancement in localized surface plasmon resonance and surface-enhanced Raman scattering. This review summarizes recent studies on metal-embedded silica NPs, focusing on their unique designs and applications. The characteristics of the metal-embedded silica NPs depend on the type and structure of the embedded metals. Based on this progress, metal-embedded silica NPs are currently utilized in various spectroscopic applications, serving as nanozymes, detection and imaging probes, drug carriers, photothermal inducers, and bioactivation molecule screening identifiers. Owing to their versatile roles, metal-embedded silica NPs are expected to be applied in various fields, such as biology and medicine, in the future.
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Affiliation(s)
- Hye-Seong Cho
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea; (H.-S.C.); (Y.-H.K.); (J.N.); (K.Y.); (M.-S.S.); (C.-H.Y.); (Y.J.K.)
| | - Mi Suk Noh
- Bio & Medical Research Center, Bio Business Division, Korea Testing Certification, Gunpo 15809, Gyeonggi-do, Republic of Korea;
| | - Yoon-Hee Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea; (H.-S.C.); (Y.-H.K.); (J.N.); (K.Y.); (M.-S.S.); (C.-H.Y.); (Y.J.K.)
| | - Jayoung Namgung
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea; (H.-S.C.); (Y.-H.K.); (J.N.); (K.Y.); (M.-S.S.); (C.-H.Y.); (Y.J.K.)
| | - Kwanghee Yoo
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea; (H.-S.C.); (Y.-H.K.); (J.N.); (K.Y.); (M.-S.S.); (C.-H.Y.); (Y.J.K.)
| | - Min-Sup Shin
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea; (H.-S.C.); (Y.-H.K.); (J.N.); (K.Y.); (M.-S.S.); (C.-H.Y.); (Y.J.K.)
| | - Cho-Hee Yang
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea; (H.-S.C.); (Y.-H.K.); (J.N.); (K.Y.); (M.-S.S.); (C.-H.Y.); (Y.J.K.)
| | - Young Jun Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea; (H.-S.C.); (Y.-H.K.); (J.N.); (K.Y.); (M.-S.S.); (C.-H.Y.); (Y.J.K.)
| | - Seung-Ju Yu
- Graduate School of Integrated Energy-AI, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si 54896, Jeollabuk-do, Republic of Korea;
| | - Hyejin Chang
- Division of Science Education, Kangwon National University, Chuncheon 24341, Republic of Korea;
| | - Won Yeop Rho
- Graduate School of Integrated Energy-AI, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si 54896, Jeollabuk-do, Republic of Korea;
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Republic of Korea; (H.-S.C.); (Y.-H.K.); (J.N.); (K.Y.); (M.-S.S.); (C.-H.Y.); (Y.J.K.)
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Di Filippo D, Sunstrum FN, Khan JU, Welsh AW. Non-Invasive Glucose Sensing Technologies and Products: A Comprehensive Review for Researchers and Clinicians. SENSORS (BASEL, SWITZERLAND) 2023; 23:9130. [PMID: 38005523 PMCID: PMC10674292 DOI: 10.3390/s23229130] [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: 10/06/2023] [Revised: 11/01/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023]
Abstract
Diabetes Mellitus incidence and its negative outcomes have dramatically increased worldwide and are expected to further increase in the future due to a combination of environmental and social factors. Several methods of measuring glucose concentration in various body compartments have been described in the literature over the years. Continuous advances in technology open the road to novel measuring methods and innovative measurement sites. The aim of this comprehensive review is to report all the methods and products for non-invasive glucose measurement described in the literature over the past five years that have been tested on both human subjects/samples and tissue models. A literature review was performed in the MDPI database, with 243 articles reviewed and 124 included in a narrative summary. Different comparisons of techniques focused on the mechanism of action, measurement site, and machine learning application, outlining the main advantages and disadvantages described/expected so far. This review represents a comprehensive guide for clinicians and industrial designers to sum the most recent results in non-invasive glucose sensing techniques' research and production to aid the progress in this promising field.
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Affiliation(s)
- Daria Di Filippo
- Discipline of Women’s Health, School of Clinical Medicine, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia;
| | - Frédérique N. Sunstrum
- Product Design, School of Design, Faculty of Design, Architecture and Built Environment, University of Technology Sydney, Sydney, NSW 2007, Australia;
| | - Jawairia U. Khan
- Institute for Biomedical Materials and Devices, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia;
| | - Alec W. Welsh
- Discipline of Women’s Health, School of Clinical Medicine, Faculty of Medicine, University of New South Wales, Sydney, NSW 2052, Australia;
- Department of Maternal-Fetal Medicine, Royal Hospital for Women, Randwick, NSW 2031, Australia
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Li Z, Lei T, Pei T, Chen K, Zhao Z, Wang M, He Y. Facile Synthesis of MXene-Ti 3C 2/Co Nanosheet Hydrogel Sensor with the Assistance of a Smartphone for On-Site Monitoring of Glucose in Beverages. Molecules 2023; 28:5075. [PMID: 37446737 DOI: 10.3390/molecules28135075] [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: 06/01/2023] [Revised: 06/21/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
A one-step cobaltous chloride (CoCl2) molten salt method was employed to prepare multilayer MXene-Ti3C2/Co materials with further ultrasonic treatment to acquire single-layer MXene-Ti3C2/Co nanosheets (NSs). MXene-Ti3C2/Co NSs were characterized, and their enzyme-like activities were investigated. Under the catalysis of MXene-Ti3C2/Co NSs, 3,3',5,5'-tetramethylbenzidine (TMB) could be oxidized by H2O2, with the color changing from colorless to blue. The affinity of MXene-Ti3C2/Co NSs to H2O2 and TMB was better than that of nanozymes reported in previous studies. The MXene-Ti3C2/Co NSs were used for the colorimetric determination of H2O2/glucose, with limits of detection (LODs) of 0.033 mM and 1.7 μM, respectively. MXene-Ti3C2/Co NSs embedded in sodium alginate (SA) hydrogel were used to construct a sensor platform. The digital pictures combined with a smartphone-installed app (color recognizer) could be used to analyze RGB values for colorimetric detection of glucose in beverages. This point-of-care testing platform has the advantages of cost-effectiveness and good transferability, with the potential to realize quick, intelligent and on-site detection.
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Affiliation(s)
- Ziling Li
- School of Public Health, North China University of Science and Technology, Tangshan 063210, China
| | - Tiantian Lei
- Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Ting Pei
- Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Keyan Chen
- School of Public Health, North China University of Science and Technology, Tangshan 063210, China
| | - Zhidong Zhao
- School of Public Health, North China University of Science and Technology, Tangshan 063210, China
| | - Manman Wang
- School of Public Health, North China University of Science and Technology, Tangshan 063210, China
| | - Yu He
- Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
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Patra S, Sahu KM, Reddy AA, Swain SK. Polymer and biopolymer based nanocomposites for glucose sensing. INT J POLYM MATER PO 2023. [DOI: 10.1080/00914037.2023.2175824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- Swapnita Patra
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur, Odisha, India
| | - Krishna Manjari Sahu
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur, Odisha, India
| | - A. Amulya Reddy
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur, Odisha, India
| | - Sarat K. Swain
- Department of Chemistry, Veer Surendra Sai University of Technology, Burla, Sambalpur, Odisha, India
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Priyanga N, Sasikumar K, Raja AS, Pannipara M, Al-Sehemi AG, Michael RJV, Kumar MP, Alphonsa AT, Kumar GG. 3D CoMoO 4 nanoflake arrays decorated disposable pencil graphite electrode for selective and sensitive enzyme-less electrochemical glucose sensors. Mikrochim Acta 2022; 189:200. [PMID: 35474402 DOI: 10.1007/s00604-022-05270-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 03/08/2022] [Indexed: 12/29/2022]
Abstract
Three-dimensional (3D) cobalt molybdate (CoMoO4) hierarchical nanoflake arrays on pencil graphite electrode (PGE) (CoMoO4/PGE) are actualized via one-pot hydrothermal technique. The morphological features comprehend that the CoMoO4 nanoflake arrays expose the 3D, open, porous, and interconnected network architectures on PGE. The formation and growth mechanisms of CoMoO4 nanostructures on PGE are supported with different structural and morphological characterizations. The constructed CoMoO4/PGE is operated as an electrocatalytic probe in enzyme-less electrochemical glucose sensor (ELEGS), confronting the impairments of cost- and time-obsessed conventional electrode polishing and catalyst amendment progressions and obliged the employment of a non-conducting binder. The wide-opened interior and exterior architectures of CoMoO4 nanoflake arrays escalate the glucose utilization efficacy, whilst the intertwined nanoflakes and graphitic carbon layers, respectively, of CoMoO4 and PGE articulate the continual electron mobility and catalytically active channels of CoMoO4/PGE. It jointly escalates the ELEGS concerts of CoMoO4/PGE including high sensitivity (1613 μA mM-1 cm-2), wide linear glucose range (0.0003-10 mM), and low detection limit (0.12 µM) at a working potential of 0.65 V (vs. Ag/AgCl) together with the good recovery in human serum. Thus, the fabricated CoMoO4/PGE extends exclusive virtues of modest electrode production, virtuous affinity, swift response, and excellent sensitivity and selectivity, exposing innovative prospects to reconnoitring the economically viable ELEGSs with binder-free, affordable cost, and expansible 3D electrocatalytic probes.
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Affiliation(s)
- N Priyanga
- PG and Research Department of Chemistry, G.T.N Arts College (Autonomous), Dindigul, 624005, Tamil Nadu, India.,Department of Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, 625021, Tamil Nadu, India
| | - K Sasikumar
- Department of Chemistry, Sacred Heart College (Autonomous), Tirupattur, 635601, Tamil Nadu, India
| | - A Sahaya Raja
- PG and Research Department of Chemistry, G.T.N Arts College (Autonomous), Dindigul, 624005, Tamil Nadu, India.
| | - Mehboobali Pannipara
- Research Center for Advanced Materials Science (RCAMS) and Department of Chemistry, King Khalid University, P.O. Box 9004, 61413, Abha, Saudi Arabia
| | - Abdullah G Al-Sehemi
- Research Center for Advanced Materials Science (RCAMS) and Department of Chemistry, King Khalid University, P.O. Box 9004, 61413, Abha, Saudi Arabia
| | - R Jude Vimal Michael
- Department of Chemistry, Sacred Heart College (Autonomous), Tirupattur, 635601, Tamil Nadu, India
| | - M Praveen Kumar
- Department of Materials Science and Engineering, University of Concepcion, Región del Bío Bío, Chile
| | - A Therasa Alphonsa
- PG and Research Department of Chemistry, Government Arts College, C.Mutlur, Chidambaram, 608102, Tamil Nadu, India
| | - G Gnana Kumar
- Department of Physical Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai, 625021, Tamil Nadu, India.
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Nonenzymatic Hydrogen Peroxide Detection Using Surface-Enhanced Raman Scattering of Gold-Silver Core-Shell-Assembled Silica Nanostructures. NANOMATERIALS 2021; 11:nano11102748. [PMID: 34685187 PMCID: PMC8540490 DOI: 10.3390/nano11102748] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 11/23/2022]
Abstract
Hydrogen peroxide (H2O2) plays important roles in cellular signaling and in industry. Thus, the accurate detection of H2O2 is critical for its application. Unfortunately, the direct detection of H2O2 by surface-enhanced Raman spectroscopy (SERS) is not possible because of its low Raman cross section. Therefore, the detection of H2O2 via the presence of an intermediary such as 3,3,5,5-tetramethylbenzidine (TMB) has recently been developed. In this study, the peroxidase-mimicking activity of gold–silver core–shell-assembled silica nanostructures (SiO2@Au@Ag alloy NPs) in the presence of TMB was investigated using SERS for detecting H2O2. In the presence of H2O2, the SiO2@Au@Ag alloy catalyzed the conversion of TMB to oxidized TMB, which was absorbed onto the surface of the SiO2@Au@Ag alloy. The SERS characteristics of the alloy in the TMB–H2O2 mixture were investigated. The evaluation of the SERS band to determine the H2O2 level utilized the SERS intensity of oxidized TMB bands. Moreover, the optimal conditions for H2O2 detection using SiO2@Au@Ag alloy included incubating 20 µg/mL SiO2@Au@Ag alloy NPs with 0.8 mM TMB for 15 min and measuring the Raman signal at 400 µg/mL SiO2@Au@Ag alloy NPs.
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