Article
Engineering, Environmental
Yalan Xu, Chan Wang, Tao Jiang, Guoxia Ran, Qijun Song
Summary: This article introduces a method for detecting cadmium ions using orange-red emissive carbon dots as a fluorescence probe. The study found that the orange-red emissive carbon dots can specifically bind with cadmium ions, leading to aggregation induced enhanced emission with high sensitivity. This method can be used for intracellular cadmium ion imaging and has the potential to alleviate cadmium poison in living organisms.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Zhenhua Yang, Xintong Yang, Yuexia Zhang, Xiaopeng Fan, Yujuan Cao, Zhongping Li, Chuan Dong
Summary: Amphiphilic blue-fluorescence carbon dots were synthesized from citric acid and oleamine through pyrolysis method. These carbon dots exhibited good optical properties with a high fluorescence quantum yield of 30.17%. A B-CDs-based fluorescence probe was developed for detecting oxytetracycline, with a linear range of 1.52-27.60 μg/mL and a detection limit of 0.33 μg/mL. The B-CDs also showed excellent bioimaging performance for SH-SY5Y cells. This work presents a new strategy for oxytetracycline detection in food.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Ratih Lestari, Tutik Dwi Wahyuningsih, Yuichi Kamiya, Indriana Kartini
Summary: In this study, a green method for transforming HDPE plastic waste into carbon dots (CDs) was developed. The synthesized CDs showed remarkable quantum yield (QY) of up to 16.16% and good fluorescence stability. They exhibited a crystalline graphite-like structure and consistent sizes, and had high selectivity for detecting Fe3+ ions with a low limit of detection (LOD) of 3.82 μM. The synthesized CDs also demonstrated good recovery rate and relative standard deviation (RSD) as Fe3+ sensors for tap water.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Wenyan Ma, Yida Zhou, Jiani Zhang, Siyu Zong, Bolun Wang, Jiyang Li
Summary: This study proposes a method to transform waste zeolite catalyst into carbon dots-zeolite composites with controllable luminescence. By adjusting the calcination conditions, the fluorescence behavior of the composites can be tuned. This work provides a novel synthetic route for recycling waste materials.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Spectroscopy
Yuexia Zhang, Xiaopeng Fan, Xuansen Sun, Xintong Yang, Zhongping Li, Zhenhua Yang, Chuan Dong
Summary: In this study, oil-soluble carbon dots were successfully fabricated and applied for the detection of doxycycline in milk. These carbon dots showed high sensitivity and potential for real sample applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Materials Science, Multidisciplinary
Zhen Zhang, Zhao Qin, Ming Zhang, Yifan Jiang, Chao Chen, Jiankan Zhang, Fengqi Zhao
Summary: The carbon dots (CDs) and the composite materials of CDs and Cu (CDs/Cu) were synthesized and their effects on the thermal decomposition and ignition characteristics of TKX-50 were studied. The results showed that CDs and CDs/Cu can effectively reduce the decomposition peak temperature of TKX-50 and promote the thermal decomposition reaction. They also have an influence on the ignition characteristics of TKX-50, decreasing the ignition delay time and increasing the flame propagation velocity.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
S. P. Smrithi, Nagaraju Kottam, Archna Narula, G. M. Madhu, Riyaz Mohammed, R. Agilan
Summary: This study demonstrates the rational design and synthesis of cadmium sulphide based heterojunction photocatalysts using carbon dots derived from beetroot. The C-dots@CdS system exhibits superior photocatalytic activity and efficient photodegradation performance for hydrogen evolution and crystal violet dye, respectively. The results indicate the promising potential of bio-derived C-dots based heterojunction photocatalysts in addressing energy and environmental demands.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Saheed O. Sanni, Theo H. G. Moundzounga, Ekemena O. Oseghe, Nils H. Haneklaus, Elvera L. Viljoen, Hendrik G. Brink
Summary: This study synthesized water-soluble fluorescent carbon dots through a green method and demonstrated their potential for selective detection of Cu2+ ions. These synthesized fluorescent carbon dots have great application potential in wastewater treatment and monitoring.
Article
Chemistry, Applied
Ainhoa Madrid, Gema Martinez, Felipe Hornos, Javier Bonet-Aleta, Esteban Calvo, Antonio Lozano, Jose L. Hueso
Summary: Carbon nanodots (CNDs) are used as fluorescent nanosensitizers to enhance the photocatalytic response of semiconductors beyond the ultraviolet range. The addition of nitrogen heteroatoms to the carbogenic network of CNDs improves their photostability and optical properties. Laser pyrolysis is a versatile technique for synthesizing N-doped CNDs by using a liquid solvent containing nitrogen as the carbon precursor. These N-doped CNDs exhibit enhanced photoactivity when combined with P25 nanoparticles for the conversion of methyl orange under white LED illumination, generating various reactive oxygen species.
Article
Spectroscopy
Masoud Gazizadeh, Gholamreza Dehghan, Jafar Soleymani
Summary: A sulfide-doped carbon dots/cadmium sulfide quantum dots ratiometric fluorescent nanosensor was developed for sensitive and selective determination of glibenclamide in biological fluids. The method utilizes the quenching effect of glibenclamide on the dual-emission intensity of the system. The developed nanosensor showed good accuracy in detecting glibenclamide in spiked human serum samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Engineering, Environmental
P. Keerthana, Avijit Kumar Das, M. Bharath, Munmun Ghosh, Anitha Varghese
Summary: A fluorescent ratiometric nanosensor was developed using biomass-derived carbon quantum dots with surface modification for highly selective identification of cadmium ions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Lili Liang, Andrei Veksha, Muhammad Zahin Bin Mohamed Amrad, Shane Allen Snyder, Grzegorz Lisak
Summary: The feasibility of recycling end-of-life RO membrane modules into valuable carbon dots (CDs) was investigated in this study. The resulting CDs showed excellent water dispersibility, stability, strong blue fluorescence, and high selectivity and sensitivity towards Fe3+. They were capable of determining Fe3+ in real water samples.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Analytical
Priyanka Chaudhary, Dheeraj Kumar Maurya, Sarita Yadav, Anwesh Pandey, Ravi Kant Tripathi, B. C. Yadav
Summary: This study reports a sustainable, cost-effective, and rapid synthesis method for carbon quantum dots (GCQD) used as a capacitive humidity sensor. Results show that GCQDs synthesized at different carbonization temperatures exhibit different crystallinity and optical properties, with C-2 showing higher sensitivity and shorter response times in sensing tests. Theoretical modeling was performed to investigate the interaction between GCQDs and water molecules, providing insights for the development of efficient humidity sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Ruihan Liu
Summary: A facile approach was established to synthesize magneto-fluorescent carbon dots with mixed phase of Fe3O4 and FeO, exhibiting excitation-independent fluorescence behavior for potential multimodal cellular imaging applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Applied
Cunjin Wang, Min Yang, Huanxian Shi, Zhuoru Yao, Enzhou Liu, Xiaoyun Hu, Pengqi Guo, Weiming Xue, Jun Fan
Summary: In this study, the effect of reaction conditions on the preparation of carbon quantum dots (CQDs) by pyrolysis was investigated. Two types of CQDs with different fluorescence characteristics were successfully prepared and the mechanism behind the difference in their optical properties was studied. Moreover, CQDs-2 showed potential applications in high sensitivity and high selectivity detection of cephalosporin antibiotics based on the inner-filter effect (IFE).
Article
Agronomy
Safar Marofi, Masoud Shakarami, Ghasem Rahimi, Farnaz Ershadfath
AGRICULTURAL WATER MANAGEMENT
(2015)
Article
Environmental Sciences
Mohsen Yari, Ghasem Rahimi, Eisa Ebrahimi, Saeedeh Sadeghi, Mahboobeh Fallah, Elahe Ghesmatpoor
WASTE AND BIOMASS VALORIZATION
(2017)
Article
Environmental Sciences
Hojat Shoja, Ghasem Rahimi, Mahboobeh Fallah, Eisa Ebrahimi
ENVIRONMENTAL EARTH SCIENCES
(2017)
Article
Environmental Sciences
Haftarani Dodangeh, Ghasem Rahimi, Mahboobeh Fallah, Eisa Ebrahimi
ENVIRONMENTAL EARTH SCIENCES
(2018)
Article
Environmental Sciences
Fatereh Karimi, Ghasem Rahimi, Zahra Kolahchi, Abolfazl Khademi Jolgeh Nezhad
WASTE AND BIOMASS VALORIZATION
(2020)
Article
Environmental Sciences
Leila Gholami, Ghasem Rahimi, Abolfazl Khademi Jolgeh Nezhad
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2020)
Article
Environmental Sciences
Fatereh Karimi, Ghasem Rahimi, Zahra Kolahchi
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Environmental Sciences
Leila Gholami, Ghasem Rahimi
Summary: The study showed that thiourea-modified biochar was more effective than pristine biochar in reducing the acid-extractable fraction of Cu and Zn in acidic soil, and it can also improve the soil properties such as CEC, pH, EC, and SOC.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Environmental Sciences
Meisam Rahimi, Ghasem Rahimi, Eisa Ebrahimi, Salahedin Moradi
Summary: This study evaluated the available and total cadmium levels in soils and wheat samples under different land uses influenced by long-term use of phosphorus chemical fertilizers. Results showed higher levels of cadmium in irrigated and rainfed lands compared to the control sample, with different fractions of cadmium distributed in the soil. Additionally, the rate of cadmium intake varied by age groups, with children having higher intake rates compared to adults and the elderly.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Agronomy
Ghasem Rahimi, Leila Gholami, Bahareh Piran
Summary: The study investigated the impact of gypsum and treated wastewater on soil properties and black cumin plants, finding that they significantly affected soil heavy metal content. While the concentration of heavy metals in different black cumin parts increased under certain conditions, they remained within standard limits.
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
(2022)
Article
Environmental Sciences
Leila Gholami, Ghasem Rahimi
Summary: This study investigates the potential application of potato peel biochar (PPB) for adsorbing and immobilizing heavy metals (Cd, Pb, and Ni) in contaminated acidic soil. The addition of 8% PPB to the soil increased soil pH, cation exchange capacity, and organic carbon. The results show that PPB has the potential to stabilize and reduce the bioavailability of heavy metals in contaminated acidic soil.
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2023)
Article
Engineering, Environmental
Meisam Rahimi, Taraneh Kamyab, Ghasem Rahimi, Ehsan Chatraei Aziz Abadi, Eisa Ebrahimi, Salman Naimi
Summary: The concentration, mobility, and contamination indices of cadmium in soil in the Hamadan province, west of Iran, were investigated. The results showed that the amount of cadmium in fertilized soil was higher than in the controlled one. Other pollution indexes indicated slight contamination due to anthropogenic activities. Lime, clay, lead, and organic matter were identified as effective parameters on cadmium durability.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Engineering, Environmental
Setareh Nazari, Ghasem Rahimi, Abolfazl Khademi Jolgeh Nezhad
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2019)
Article
Engineering, Chemical
Xu Yang, Jieshi Xiao, Jian Huang, Kaixiang Peng
Summary: This study introduces an online convolutional adversarial autoencoder (AAE) model to learn representative industrial process information. By extracting features that reflect diverse information and follow a Gaussian distribution, the model improves the accuracy of fault detection and removes redundant information through a feature selection strategy.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
Article
Engineering, Chemical
Shao-Yang Wu, Meng-Tsun Lai, Chung-Hui Hsu, Kevin C. W. Wu, Yesong Gu
Summary: This study investigated the effectiveness of using Fe-based MOF or MIL-100(Fe) in conjunction with a PEDOT-modified Pt electrode for detecting the synthetic azo dye tartrazine. By modifying the electrode with two different methods, favorable lower reductive potentials, competitive sensitivities, and good repeatability and stability were achieved in all MIL-100(Fe)/PEDOT/Pt electrodes.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)