Article
Chemistry, Analytical
Thi Kim Thuong Nguyen, Thi Huong Giang Le, Nhan Thi Thanh Pham, Thi Hoa Hoang, Ha Phuong Nguyen, Mua Xuan Nguyen, Minh Huong Giang Dang, Huy Hoang Do, Thi Thao Ta, Xuan Thanh Bui
Summary: In this study, a glassy carbon electrode modified with electrochemical reduced graphene oxide (ErGO/GCE) was used to determine amaranth in soft drink and candy samples by adsorptive stripping voltammetry. The ErGO/GCE was fabricated through an electrochemical reduction process, and the characteristics of the graphene oxide and reduced graphene oxide were studied. The optimal conditions for determining amaranth were determined, and the proposed method can be applied for amaranth dye analysis in food.
MICROCHEMICAL JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
M. Hasheena, A. Ratnamala, M. Noorjahan, G. Deepthi Reddy, Gousia Begum
Summary: A facile synthetic strategy is used to generate nickel sulfide quantum dots (Ni3S2), which are assembled onto exfoliated graphene oxide sheets to form nickel sulfide-graphene oxide nanocomposite (GO-Ni3S2). The GO-Ni3S2 nanocomposites are coated onto a glassy carbon electrode to form GO-Ni3S2@GCE, which can detect dopamine and tyrosine simultaneously. The stability of GO-Ni3S2@GCE system is studied, and it shows minimal loss in peak current after 3 weeks and ten cycles of washing. The GO-Ni3S2@GCE system can detect dopamine with a concentration as low as 12 nM.
FRONTIERS IN MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Sanju Tanwar, Aditi Sharma, Dhirendra Mathur
Summary: Graphene quantum dots (GQDs) were synthesized through a hydrothermal process using glucose as a precursor. The optical characteristics of GQDs were analyzed using various spectroscopic techniques, while their morphological and structural properties were characterized using microscopy and X-ray diffraction. GQDs were drop casted on a glassy carbon electrode to develop an electrochemical sensor for the detection of the organophosphate pesticide malathion. The sensor showed excellent charge transfer properties and a low detection limit of 0.62 nM.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2023)
Article
Chemistry, Analytical
Tayebeh Ghiasi, Shahin Ahmadi, Elahe Ahmadi, Mohamad Reza Talei Bavil Olyai, Zahra Khodadadi
Summary: A new electrochemical sensor for diazinon determination was developed based on graphene quantum dots, chitosan, and nickel molybdate nanocomposites, showing good sensitivity and selectivity. The sensor demonstrated two linear ranges and a low detection limit under optimized conditions.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Dimitrios Livas, Maria Trachioti, Sofia Banou, Michailia Angelopoulou, Anastasios Economou, Mamas Prodromidis, Panagiota Petrou, Sotirios Kakabakos, Christos Kokkinos
Summary: This work presents a novel electrochemical immunoassay device for analyzing adulteration in complex matrices, utilizing competitive immunoassays and stripping voltammetric detection. The device shows high sensitivity and wide applicability, making it suitable for various quantum dot-based bioassays.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Junwei Liang, Yuxiang Liu, Zhichun Si, Guodan Wei, Duan Weng, Feiyu Kang
Summary: A photocatalyst utilizing nano-Au based localized surface plasmonic resonance effect was reported in this study, capable of producing H-2 and H2O2 simultaneously. Photocatalytic tests revealed the catalyst's efficient overall water splitting activity.
Article
Biochemistry & Molecular Biology
Siphesihle Robin Nxele, Tebello Nyokong
Summary: A novel aptasensor was developed for the electrochemical detection of PSA, utilizing combinations of Cobalt phthalocyanine, aptamer, and graphene quantum dots on electrode surfaces. Linear calibration curves were observed in the concentration range of 1.2-2.0 pM using EIS and DPV, with a detection limit as low as 0.66 pM. The sensor showed selectivity for PSA and good stability, making it a promising early detection device for prostate cancer.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Pooja Devi, Deepak Kukkar, Manpreet Kaur, Anupma Thakur, Ki-Hyun Kim, Preeti Kukkar, Kamalpreet Kaur, Harsimran Kaur
Summary: This research describes the synthesis of a covalent bioconjugate of graphene quantum dots and glutaminase for detecting L-glutamine. The graphene quantum dots showed uniform size distribution and blue emission characteristics, while the immobilization of glutaminase on their surface was confirmed. Photoluminescence-based quantification of glutamine demonstrated better sensitivity and rapidity compared to electrochemical analysis.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Acoustics
Reshma Kaimal, Victor Vinoth, Hector Valdes, Belqasem Aljafari, Sambandam Anandan, Amol Shrikrishna Salunke, Ramalinga Viswanathan Mangalaraja
Summary: A facile electrochemical method has been developed for glutathione sensing using novel glassy carbon electrode composed of graphene quantum dots (GQDs) embedded on amine-functionalized silica nanoparticles (SiNPs). The newly developed electrode exhibits a good response to glutathione with a wide linear range and a low detection limit, and it shows highly attractive electrocatalytic activity towards glutathione detection in neutral media. This electrode also provides outstanding selectivity, reproducibility, long-term stability, and can be used in the presence of interferences typically found in real sample analysis.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Chemistry, Physical
Mumtaz Ali, Rabia Riaz, Aima Sameen Anjum, Kyung Chul Sun, Hui Li, Sung Hoon Jeong, Min Jae Ko
Summary: This study explored the potential of nitrogen-doped graphene quantum dots to induce 3D porous orientation of graphene oxide nanosheets, enhancing electrolyte transport rates and electrocatalytic activity. The resulting 3D hierarchically porous carbon architecture showed enhanced performance in dye-sensitized solar cells, comparable to Pt electrodes, and can be utilized in emerging electrocatalytic applications such as supercapacitors, water splitting, and battery electrodes.
Article
Materials Science, Multidisciplinary
S. Veeresh, H. Ganesh, Y. S. Nagaraju, M. Vandana, S. P. Ashokkumar, H. Vijeth, M. V. N. Ambika Prasad, H. Devendrappa
Summary: This study investigates the structural and electrochemical properties of graphene quantum dots (GQDs) and reduced graphene quantum dots (rGQDs) after UV irradiation. Chemical modifications were detected using FT-IR and XRD, while TEM and AFM were used to observe the microstructure. Electrochemical tests showed strong electrochemical activity and controllable capacitance behavior in GQDs and rGQDs.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Chemistry, Analytical
Nutnicha Chansud, Noppanut Longnapa, Opas Bunkoed
Summary: A nanohybrid magnetic fluorescent sensing probe was developed for ultrasensitive and selective determination of levofloxacin, showing excellent performance and specificity. It could enrich the target substance quickly in complex samples and provide detection results comparable to HPLC.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2021)
Article
Acoustics
Reshma Kaimal, Patel Nishant Mansukhlal, Belqasem Aljafari, Sambandam Anandan, Muthupandian Ashokkumar
Summary: The gold-loaded boron-doped graphene quantum dots interface was prepared via ultrasound-aided reduction method for electrochemical monitoring of guanine-GUA and adenine-ADE in DNA. The resulting sensor showed wide linear range, low detection limit, excellent sensitivity and selectivity, as well as prominent selectivity, reproducibility, and stability.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Mina Hadidi, Fatemeh Ahour, Sajjad Keshipour
Summary: In this study, a new catalyst, GQD-DPA, was successfully prepared by covalent functionalization of graphene quantum dot with D-penicillamine. The modified electrode, GQD-DPA/GCE, exhibited improved sensitivity and selectivity for Pb2+ determination, showing linear behavior in the concentration range of 0.03 to 2.8 nM with a calculated detection limit of 0.01 nM. The sensor demonstrated interference-free behavior and was used for accurate determination of Pb2+ ions in tap water and river water samples.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Analytical
Kritsada Samoson, Asamee Soleh, Kasrin Saisahas, Kiattisak Promsuwan, Jenjira Saichanapan, Proespichaya Kanatharana, Panote Thavarungkul, Kah Haw Chang, Ahmad Fahmi Lim Abdullah, Kunanunt Tayayuth, Warakorn Limbut
Summary: We developed a simple, inexpensive and environmentally friendly method for fabricating a flexible laser induced graphene-chitosan-gold nanoparticle electrode. The electrode exhibited good electrical conductivity and excellent electrocatalytic activity, making it suitable for uric acid detection.
Article
Chemistry, Analytical
Mohammad Bagher Gholivand, Mojtaba Shamsipur, Hosna Ehzari
MICROCHEMICAL JOURNAL
(2019)
Article
Electrochemistry
Mohammad Bagher Gholivand, Elahe Ahmadi
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2019)
Article
Chemistry, Analytical
Sajad Azizi, Mohammad-Bagher Gholivand, Masoud Amiri, Iraj Manouchehri
MICROCHEMICAL JOURNAL
(2020)
Article
Biochemical Research Methods
Z. Lotfi, M. B. Gholivand, M. Shamsipur
Summary: A non-enzymatic glucose sensor based on g-C3N4/NiO/CuO nanocomposite immobilized on a glassy carbon electrode (GCE) was developed and showed superior electrochemical performance. The sensor exhibited a linear range from 0.4 μM to 8.5 mM, a detection limit of 0.1 μM, and a sensitivity of 362.12 μA mM(-1) cm(-2). This sensor displayed promising potential for blood glucose sensing with favorable reproducibility, selectivity, and long-term stability.
ANALYTICAL BIOCHEMISTRY
(2021)
Article
Materials Science, Biomaterials
Giti Paimard, Mohammad Bagher Gholivand, Mojtaba Shamsipur, Elahe Ahmadi, Mohsen Shahlaei
Summary: Dabigatran interacts with thrombin using fluorescence, UV-Vis spectroscopy, and molecular docking. Experimental results match theoretical results, and a sensor with a detection limit of 0.3 nM was developed for thrombin monitoring in serum samples.
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2021)
Article
Energy & Fuels
Bahare Abdolahi, Mohammad Bagher Gholivand, Mojtaba Shamsipur, Masoud Amiri
Summary: The study reported the synthesis of a porous composite made from chicken feathers and nickel and cobalt salts, which demonstrated remarkable electrochemical properties for use in supercapacitors and hydrogen and oxygen evolution. The composite showed high specific capacitance, energy density, and power density as a supercapacitor, and also exhibited notable catalytic ability towards HER and OER. The optimal electrocatalyst displayed low overpotentials for both HER and OER, as well as a relatively low cell voltage for overall water electrolysis.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Analytical
Fatemeh Shahrezaei, Mohammad Bagher Gholivand, Mojtaba Shamsipur
Summary: The study aimed to evaluate the liquid phase microextraction of chloridazon using TiO2 modified polypropylene hollow fibers. The results showed that this novel approach is simple, cost-effective, and applicable for detecting herbicides in the environment.
JOURNAL OF ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Hosna Ehzari, Mohsen Samimi, Meysam Safari, Mohammad Bagher Gholivand
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2020)
Article
Materials Science, Multidisciplinary
Froozan Feizi, Mojtaba Shamsipur, Mohammad Bagher Gholivand, Avat (Arman) Taherpour, Ali Barati, Hosna Shamsipur, Ezeddin Mohajerani, Peter Budd
JOURNAL OF MATERIALS CHEMISTRY C
(2020)
Article
Chemistry, Analytical
Sajad Massumi, Elahe Ahmadi, Arezoo Akbari, Mohammad Bagher Gholivand
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Analytical
Fatemeh Shahrezaei, Mojtaba Shamsipur, Mohammad Bagher Gholivand, Parvin Zohrabi, Nasrin Babajani, Abdolreza Abri, Adeleh Moshtaghi Zonouz, Hemayat Shekaari
ANALYTICAL METHODS
(2020)
Article
Chemistry, Analytical
Foroozan Feizi, Mojtaba Shamsipur, Ali Barati, Mohammad Bagher Gholivand, Farimah Mousavi
MICROCHEMICAL JOURNAL
(2020)
Article
Chemistry, Multidisciplinary
Elahe Ahmadi, Mohammad Bagher Gholivand, Changiz Karami
Article
Materials Science, Multidisciplinary
Arash Boochani, Morteza Jamal, Masoud Shahrokhi, Bromand Nourozi, Mohammad Bagher Gholivand, Jabbar Khodadadi, Elmira Sartipi, Maliheh Amiri, Moein Asshabi, Arash Yari
JOURNAL OF MATERIALS CHEMISTRY C
(2019)
Article
Chemistry, Analytical
Elahe Ahmadi, Mohammad Bagher Gholivand
ANALYTICAL METHODS
(2019)
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)