Article
Chemistry, Multidisciplinary
Xiaowei Wang, Zixuan Wang, Yamei Jiang, Suqin Han
Summary: In this study, Ag and N-doped carbon dots (Ag-NCDs) were used to enhance the ultraweak H2O2-Co2+ chemiluminescence reaction. Ag-NCDs acted as catalyst, chelator, and luminophore, facilitating H2O2 dissociation and generating more active radicals. The study also developed a chemiluminescence system for HQ detection and enabled sequential determination of Co2+ and HQ in different samples, providing simplicity, efficiency, and selectivity.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Ikhtisham Mehmood, Jincheng Huang, Sayed Ali Khan, Abdul Hakim Shah, Quadrat Ullah Khan, Maryam Kiani, Dingjian Zhou, Guijun Li
Summary: By sensitizing and co-sensitizing processes, this study successfully enhances the optoelectronic performance of quantum dot sensitized solar cells, overcoming electron-hole recombination issues and achieving a significant improvement in efficiency.
Article
Chemistry, Physical
He Zhao, Juehua Wang, Zhuangjun Fan, Yongbing Xie, Di Zhang, Shanshan Sun, Yi Zhang, Hongbin Cao
Summary: A green and energy-efficient method for preparing N-doped reduced graphene oxide quantum dots (N-rGQDs) was proposed in this study, based on a metal-free Fenton reaction without additional energy input. N-rGQDs with a higher percentage of aromatic nitrogen exhibited excellent catalytic performance, enhancing pollutant degradation efficiency by 25 times.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Yuanyuan Dong, Tianze Li, Buhe Bateer, Huiwen Wang, Qiuyue Fu, Fengfa Zhang
Summary: This work presents a simple solvothermal method to prepare yellow emissive nitrogen-doped carbon dots (YNCDs) using o-phenylenediamine (o-PD) and ethanol. The YNCDs show yellow emission at 410/555 nm and can be effectively inhibited by curcumin based on the inner filter effect (IFE). The YNCDs are used as nanoprobes to establish a turn-off sensor platform for detecting curcumin, achieving highly selective and sensitive detection in real samples.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Engineering, Chemical
Tingting Zhang, Daquan Zhang, Panpan Wu, Lixin Gao
Summary: In this study, high-nitrogen-doped CDs were prepared via solvothermal treatment and their corrosion inhibition effect on copper in 3wt% NaCl solution was investigated. The results showed that N-doped CDs can form a compact protective film, effectively protecting the copper material.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Physical
Chandrakalavathi Thota, Jeevan Kumar Reddy Modigunta, Maddaka Reddeppa, Young Ho Park, Hyejin Kim, Hansol Kang, Samanth Kokkiligadda, Seongeun Lee, G. Murali, Sung Young Park, Insik In
Summary: In this study, a light-activated gas sensor utilizing carbon quantum dots and silver nanoparticles was successfully developed. By controlling the flow direction of photogenerated electrons and utilizing excellent oxygen dissociation ability, the sensor exhibited exceptional selectivity and sensitivity towards hydrogen sulfide gas, enabling detection at low concentrations.
Article
Chemistry, Physical
Zikun Tang, Yi Tao, Kanghong Wang, Dequan Bao, Zhenqiu Gao, Haiguang Zhao, Hao Zhang, Zhen Wen, Xuhui Sun
Summary: This study presents a unique synthetic approach to improve the transfer dynamics of photogenerated charges in heterostructured quantum dots (QDs) by incorporating metal ions (Mn2+) into the lattice during shell growth. The optimized QDs (Mn-0.03-CdSe/CdS) show a significantly higher saturated photocurrent density compared to undoped QDs (CdSe/CdS) under one sun illumination, attributed to the reduced conduction band offset and suppressed non-radiative recombination process of photogenerated charges introduced by Mn2+ ions. This work provides valuable guidance for enhancing the performance of optoelectronic devices based on heterostructured QDs.
Article
Nanoscience & Nanotechnology
Nkosingiphile Zikalala, Sundararajan Parani, Oluwatobi Samuel Oluwafemi
Summary: This study reported the synthesis of ZnInS (ZIS) quantum dots using thioglycolic acid and sodium citrate as dual capping agents, which showed selective quenching of fluorescence response to Co2+ ions. The findings suggest the potential of ZIS QDs in selective detection of Co2+ ions in aqueous solution.
Article
Chemistry, Multidisciplinary
Xiaohong Tan, Heng Lu, Yanmei Zhou, Shaoru Wu, Guobin Huang, Xudong Wang, Jingbin Zeng, Feiming Li, Zhixiong Cai, Maosheng Zhang
Summary: This article presents a fabrication method for a ratiometric fluorescence temperature sensor and demonstrates its linear relationship within the temperature range of 30-45 degrees Celsius. The sensor exhibits high temperature response sensitivity and visible fluorescence color change.
Article
Chemistry, Physical
Meng Yang, Hui Jin, Rijun Gui
Summary: In this study, a metal-doping strategy was proposed to construct metal-doped borophene and boron quantum dots (BQDs). Ag+ was identified as the optimal metal ion for preparing Ag+-doped borophene derived BQDs (Ag-BQDs) based on theoretical calculations. The doping of Ag+ enhanced the stability and fluorescence properties of borophene. Experimental results demonstrated the excellent performance of Ag-BQDs in various applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Spectroscopy
Anzhong Tan, Guanghui Yang, Xuejuan Wan
Summary: Nitrogen-doped carbon quantum dots (N-CQDs) with strong blue fluorescence and absolute quantum yield of 92.1% were successfully synthesized in this study. The N-CQDs demonstrated outstanding fluorescence stability, high selectivity, and anti-interference in Hg2+ detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Physical
Urosa Latief, Mohd. Shahid Khan, Shafi Ul Islam, Zeeshan Khan, Md Amanullah Saifee
Summary: Mercury (Hg) is a highly toxic environmental contaminant that can cause serious ecological and health problems even at low concentrations. There is an urgent need for accurate and sensitive methods to detect Hg2+ ions in the environment. Additionally, the production of red emissive nanophosphors with excellent color purity is crucial for next-generation display systems and the lighting industry.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Environmental Sciences
Chenglin Zhang, Feng Zhou, Su Zhan, Yupeng Song, Fengguang Wang, Jianfu Lai
Summary: By synthesizing H2O2 through photocatalysis in seawater, the efficiency of inactivating marine microorganisms can be increased, expanding the application of photocatalytic technology in the field of marine antifouling.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Yuan Jiang, Haibao Shao, Hangning Xu, Jiahao Yang, Yi Wang, Haonan Xiong, Pengyao Wang, Xilin Wang
Summary: An ultrafast and facile aqueous synthetic approach for CdTe/CdS core/shell quantum dots with emission from the green to near-infrared window has been reported. The CdTe/CdS QDs with emission wavelengths at 700 and 800 nm can be obtained within 20-45 minutes under optimized conditions, and the resulting QDs are highly luminescent without postsynthesis treatment. The influences of various experimental factors on the synthesis rate and luminescent properties of the CdTe/CdS QDs have been considered.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Bambesiwe M. Maya, Olayemi J. Fakayode, Mokae F. Bambo, Ajay K. Mishra, Edward N. Nxumalo
Summary: This study presents the successful use of Gd-doped AgInS2 quantum dots with high Gd mole ratios for fluorescence detection and adsorption of Ag+ ions in water. The materials showed good fluorescence characteristics and adsorption properties under optimized conditions, and a combination of ion-exchange, electrostatic interaction, complexation, and diffusion processes was proposed as the adsorption mechanism.
Article
Chemistry, Analytical
Gang Qu, Yuxin Zhao, Qiaoli Zhang, Jina Wu, Xiaosen Li, Yang Yang, Shilei Liu
Summary: In this study, magnetic mesoporous materials combined with real-time in situ mass spectrometry were used for the high-throughput detection of hydrolyzed products of organophosphorus nerve agents. The method showed good linearity, low limits of detection and quantification, and high extraction recoveries. The magnetic preparation method used was quick, cost-effective, rugged, and safe. The results demonstrated the potential of this method for rapid and efficient determination of the target analytes in environmental samples.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Anna Hildebrand, Mariam Merchant, Danny O'Hare
Summary: Substandard and falsified artemisinin derivatives in antimalarials have caused significant deaths and economic losses. This study evaluates the feasibility of voltammetric methods for identifying and quantifying artemether. The findings suggest that electrochemical analysis shows promise as a method for artemether identification and quantification.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Marx Osorio Araujo Pereira, Alvaro Ferreira Junior, Edson Silvio Batista Rodrigues, Helena Mulser, Giovanna Nascimento de Mello e Silva, Wallans Torres Pio dos Santos, Eric de Souza Gil
Summary: Brazilian spotted fever (BSF) is a serious and rapidly evolving disease. A new impedimetric immunosensor was developed for rapid diagnosis by measuring specific antibodies in plasma. The sensor demonstrated selectivity and accuracy, and has potential for important applications in diagnostic testing.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Kathrin Schilling, Ronald A. Glabonjat, Olgica Balac, Marta Galvez-Fernandez, Arce Domingo-Relloso, Vesna Slavkovich, Jeff Goldsmith, Miranda R. Jones, Tiffany R. Sanchez, Ana Navas-Acien
Summary: Analysis of trace elements in urine is an important tool for assessing exposures, diagnosing nutritional status, and guiding public health and healthcare intervention. This study provides a sensitive method for analyzing 18 elements in urine samples, using only 100 μL. The results show good accuracy and sensitivity of the method.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Mengya Li, Shijie Liu, Shiliang Guo, Dong Liang, Miaoyun Li, Yaodi Zhu, Lijun Zhao, Jong-Hoon Lee, Gaiming Zhao, Yangyang Ma, Yanxia Liu
Summary: In this study, a magnetic flow device was developed to purify spores in a culture medium system. The device used magnetic nanoparticles to absorb vegetative cells, separating them from the spores. The achieved purity of the collected spores was over 95%. The study also demonstrated a rapid quantitative detection method using Raman spectroscopy.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Wanqiong Liu, Zixuan Wu, Jianwei Peng, Zebin Xu, Yong Liang
Summary: Metal-organic frameworks (MOFs) are effective carriers for molecular imprinting, but their poor dispersibility in aqueous solution is a significant drawback. In this study, we have applied amphiphilic block copolymers and molecularly imprinted technology on MOFs to improve the hydrophilicity of molecularly imprinted fluorescent materials.
ANALYTICAL METHODS
(2024)