Article
Engineering, Electrical & Electronic
Xunbo Hu, Mei Wang, Jianfeng Deng, Syed ul Hasnain Bakhtiar, Zhiping Zheng, Wei Luo, Wen Dong, Qiuyun Fu
Summary: In this study, quantum dots were used to prepare gas sensing films, and the relationship between grain size and gas sensitivity was investigated. The results showed that the highest sensitivity was achieved when the grain size was close to twice the Debye length.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Physical
Haili Huang, Zhentao Du, Hung-Chun Wu, Fengmei Gao, Lan Jiang, Huilin Hou, Shanliang Chen, Weijun Li, Feng Hu, Weiyou Yang, Dongdong Zhang, Lin Wang
Summary: In this study, a high-temperature resistant ethanol sensor based on rationally designed heterojunctions is constructed, exhibiting significantly improved performance in sensing ethanol at 465 degrees C. The sensor demonstrates high response, fast detection, and excellent selectivity, suggesting promising applications for stable sensors operating under harsh working conditions.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Analytical
Jinyu Lin, Junchao Qian, Yaping Wang, Yue Yang, Yuxuan Zhang, Jianping Chen, Xingwang Chen, Zhigang Chen
Summary: The article introduces a novel and highly sensitive CeO2-Co3O4 QDs@porous carbon nanocomposite electrochemical sensor for detecting oxytetracycline in water samples. The experimental results show that the electrode exhibits excellent electrocatalytic performance and can effectively detect oxytetracycline.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Rong Liao, Si Dai, Biao Liu, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: A novel strategy for photocurrent polarity switchable sensing is reported in this study by regulating electrostatic interactions between two semiconductor photoactive materials. The method achieves low detection limits and a wide linear detection range in the detection of HAase activity, providing a new and effective approach for photocurrent polarity switching and HAase activity detection.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Yan Li, Shuang Song, Lin-Bin Zhang, Xiao-Xue Lian, Lin-Xi Shan, Qing-Jun Zhou
Summary: A hollow porous ZnO@ZnS core-shell structure was successfully synthesized hydrothermally, showing high gas-sensing performance with high selectivity, quick response-recovery, and stability to ethanol. The gas-sensing enhancement can be attributed to the Schottky barrier at the interface and the special hollow porous structure of ZnO@ZnS.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Lanlan Bai, Yun Gao, Jiajia Wang, Tuerxunnayi Aili, Zhenhong Jia, Xiaoyi Lv, Xiaohui Huang, Jie Yang
Summary: In this study, carbon quantum dot-labelled beta-lactoglobulin antibodies were used for refractive index magnification and detected using angle spectroscopy. The method successfully measured the angle variations before and after immune response to determine different concentrations of beta-lactoglobulin antigen. The results demonstrate that this method is a quick, convenient, and cost-effective way to detect beta-lactoglobulin.
Article
Chemistry, Multidisciplinary
Huaijun Tang, Qiuhong Chen, Guoyun Meng, Shiyou Lu, Jing Qin, Kaixin Yang, Long Gao, Zhengliang Wang, Yonghui He
Summary: Developing rare-earth-free (even metal-free) luminescent materials as phosphors for LEDs is of great significance due to the scarcity, cost, and unsustainability of rare-earth elements. A graphitic-C3N4 derivative containing heptazines merged with phenyls was synthesized via thermal polymerization of melamine and quinazoline-2,4(1H,3H)-dione. The resulting product showed improved photoluminescent properties, with a change in emission color from blue to green, an increase in maximum emission wavelength, and an increase in PL quantum yield. Purification through vacuum sublimation resulted in a yellowish green emission product with high thermal stability and low thermal quenching. This product was used as a phosphor in white LEDs, which exhibited good performance with high-efficiency and quasi-green emission.
Review
Environmental Sciences
Chanchal Das, Mika Sillanpaa, Shabi Abbas Zaidi, Moonis Ali Khan, Goutam Biswas
Summary: Urbanization and population growth have led to a significant increase in solid waste generation, projected to reach 3.40 billion tons by 2050. Carbon-based quantum dots (Cb-QDs) derived from solid wastes have attracted research interest due to their wide range of applications. This review focuses on the conversion of solid wastes into useful materials for pollution reduction, specifically investigating sustainable synthesis routes of carbon quantum dots (CQDs), graphene quantum dots (GQDs), and graphene oxide quantum dots (GOQDs). The applications of these quantum dots in various fields are also discussed, along with the challenges in implementing existing synthesis methods and future research directions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Zhenxing Yuan, Zhenyu Feng, Lingshuai Kong, Jinhua Zhan, Xicheng Ma
Summary: The study focuses on the synthesis of Pt-doped ZnO nanoplates for highly sensitive and selective detection of acetone. The results showed enhanced gas sensing performance of the hybrid materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Energy & Fuels
Hongying Quan, Wenhao Tao, Yan Wang, Dezhi Chen
Summary: This study reports a facile strategy to improve the capacitive behavior of biomass-derived porous carbons by introducing highly graphitized carbon quantum dots (CQDs) into their structure. The resulting CQDs/HPC composites exhibit a well-developed porous structure, improved charge/ion transfer kinetics, and high capacitance and rate capability. Moreover, these composites also show high long-term stability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Materials Science, Ceramics
Jiaqi Fan, Weiying Zhou, Jian Chen, Ruiyuan Liu, Qi Pang, Liya Zhou, Zhan-chao Wu, Xinguo Zhang
Summary: A novel solvent-dependent fluorescent CDs (R-CDs) were prepared by solvothermal method and showed multicolor emissions ranging from blue to red by tuning the solvents polarity. The highest quantum yield of 61.11% was achieved in R-CDs acetone solution with bright yellow emission at 565 nm. R-CDs were used as a quantitative fluorescent sensor for detecting water in different solvents, showing good linear relationship and accuracy.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Hong Shen, Zhiyuan Yu, Jinjin Wang, Ming Lu, Chong Qiao, Wan-Sheng Su, Yuxiang Zheng, Rongjun Zhang, Yu Jia, Liangyao Chen, Caizhuang Wang, Kaiming Ho, Songyou Wang
Summary: The study found that the emission induced by single Si=O passivated silicon quantum dots is size-independent and the luminescence properties of Si QDs can be modulated by the ligands. Additionally, even a small number of oxygen ligands can strongly influence the luminescence of nanocrystalline silicon.
NANOSCALE ADVANCES
(2021)
Article
Materials Science, Multidisciplinary
Dali Yan, Shuguang Xia, Shenyu Li, Shouyu Wang, Ming Tan, Shiyu Liu
Summary: The multiwalled carbon nanotubes were successfully deposited onto porous silicon to form a composite, which was then used to fabricate chemiresistive gas sensors. The sensors showed p-type semiconductor behavior at room temperature, with the sensor fabricated using a 5-minute electrophoresis time demonstrating the best NO2-sensing characteristics, including high response, fast response-recovery time, good repeatability, and selectivity toward 1 ppm NO2. The gas-sensing performance was attributed to the heterostructure effect, high specific surface area, and unblocked porous structure.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Green & Sustainable Science & Technology
Yaling Liu, John Keil, Vivian E. Ferry, Uwe R. Kortshagen
Summary: Greenhouses provide a controlled environment for plant growth and offer resilience to droughts and extreme weather. Luminescent solar concentrators (LSCs) have the potential to reduce greenhouse energy demand by generating clean electricity and transmitting enough light for plant growth.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Chemistry, Multidisciplinary
Rossella Santonocito, Nunzio Tuccitto, Valentina Cantaro, Antonino Biagio Carbonaro, Andrea Pappalardo, Valentina Greco, Valeria Buccilli, Pietro Maida, Davide Zavattaro, Gianfranco Sfuncia, Giuseppe Nicotra, Giuseppe Maccarrone, Antonino Gulino, Alessandro Giuffrida, Giuseppe Trusso Sfrazzetto
Summary: We report the design and fabrication of an array-based sensor containing functionalized Carbon Dots, Bodipy's and Naphthalimide probes, which exhibits high fluorescence emissions and sensitivity in the presence of low amounts of TNT explosive. This sensor utilizes a smartphone as a detector, making it suitable for real-life field applications. The sensor has demonstrated high selectivity for TNT molecules, can detect TNT in a range from 98 ng to 985 μg, and has the potential to be utilized by non-specialist operators in the field.
Article
Chemistry, Applied
N. K. R. Bogireddy, U. Pal, M. K. Kumar, J. M. Dominguez, L. Martinez Gomez, V Agarwal
Summary: The study presents a green synthesis method using Coffea Arabica seed extract to create Pt nanoparticles, which form efficient reusable 2D superstructures for catalytic reduction of industrial pollutants in water. The results suggest that the green synthesis process could be extended to fabricate other metallic superstructures for efficient catalytic reduction of organic contaminants.
Article
Engineering, Electrical & Electronic
A. G. Hernandez, M. Olvera, Obed Perez-Cortes, Heberto Gomez-Pozos, T. V. K. Karthik
Summary: Paracetamol-assisted synthesis of highly porous zinc oxide micro-flakes was achieved, which showed enhanced carbon dioxide sensing response and rapid response time. The structures are simple, cost-effective, and of great interest for researchers in the chemical sensor fabrication field.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Review
Multidisciplinary Sciences
Simei Darinel Torres Landa, Naveen Kumar Reddy Bogireddy, Inderbir Kaur, Vandana Batra, Vivechana Agarwal
Summary: This review presents the recent progress in the use of carbon dots for environmental remediation, focusing on the detection of heavy metal ions using green precursors. It includes methods for synthesis, comparison of different carbon dots, and provides a general guide for using environmentally friendly carbon dots to detect pollutants.
Article
Nanoscience & Nanotechnology
Naveen Kumar Reddy Bogireddy, Abdel Ghafour El Hachimi, Jesus Muniz, Ana Laura Elias, Yu Lei, Mauricio Terrones, Vivechana Agarwal
Summary: This study reports the enhanced catalytic efficiency of a hybrid structure of nitrogen-doped graphene oxide dots and gold nanoparticles for hydrogen evolution and complete removal of organic pollutants. The high catalytic activity originates from the oxygen-containing groups on NGODs and AuNPs. This research may pave the way for developing scalable and economically viable hybrid systems.
ACS APPLIED NANO MATERIALS
(2021)
Retraction
Materials Science, Multidisciplinary
V. Rodriguez-Lugo, D. Sanchez-Campos, D. Mendoza-Anaya, M. I. Reyes Valderrama, L. Escobar-Alarcon, E. Salinas-Rodriguez, T. V. K. Karthik
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Naveen Kumar Reddy Bogireddy, Vivechana Agarwal
Summary: Carbon dots prepared using 10-Undeceonic acid as an organic precursor exhibit broad range excitation wavelength-dependent photoluminescence, with excitation wavelength-dependent upconversion and downconversion photoluminescence. The UCPL/DCPL can be explained by the presence of surface states, shallow and deep trap states in the carbon dots.
Article
Materials Science, Multidisciplinary
Kiran Kumar Anna, Naveen Kumar Reddy Bogireddy, Vivechana Agarwal, Rafael Ramirez Bon
Summary: This study involves synthesizing aluminum oxide nanoparticles using two different methods and investigating their properties. The precipitation method resulted in nanoparticles with higher photocatalytic activity for methylene blue degradation under sunlight.
Article
Environmental Sciences
Naveen Kumar Reddy Bogireddy, Yetzin Rodriguez Mejia, Tejraj M. Aminabhavi, Victor Barba, Raul Herrera Becerra, A. David Ariza Flores, Vivechana Agarwal
Summary: This study focuses on the feasibility of spectroscopic studies to monitor the removal of 4-NP using sodium borohydride (NaBH4) probe reaction in the presence of silver, gold, and bimetallic Ag/Au nanoparticles. The results show the formation of various compounds during the reduction reaction and provide a kinetic analysis of the standard compounds.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Materials Science, Multidisciplinary
Ricardo Lozano-Rosas, Angelica Guadalupe Hernandez, Maria P. Elizalde-Gonzalez, Maria Josefina Robles-Aguila, Venkata Krishna Karthik Tangirala
Summary: Zinc oxide nanoparticles doped with nickel and aluminum are synthesized using an ultrasound-assisted sol-gel method. The structure and morphology of the doped samples are analyzed, and the gas sensing properties of the samples are evaluated. The results show that nickel-doped ZnO samples exhibit excellent performance in detecting carbon dioxide. The gas sensing mechanisms of the samples are also discussed.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Article
Engineering, Chemical
Naveen Kumar Reddy Bogireddy, Abdel Ghafour El Hachimi, Yetzin Rodriguez Mejia, Mohan Kumar Kesarla, Rajender S. Varma, Raul Herrera Becerra, Vivechana Agarwal
Summary: In this study, a highly reusable, non-toxic catalyst was developed for the effective removal of 4-nitrophenol (4-NP) from marine water. The catalyst showed exceptional catalytic activity and reusability in various water samples, and demonstrated excellent stability in marine water.
Review
Chemistry, Applied
Inderbir Kaur, Vandana Batra, Naveen Kumar Reddy Bogireddy, Simei Darinel Torres Landa, Vivechana Agarwal
Summary: The adoption of unsustainable growth strategies has adversely affected the global ecosystem, especially the food chain and water bodies, ultimately posing threats to the human race. To address this issue, sustainable and environmentally friendly green precursor derived carbon dots (CDs) have been utilized for the optical detection of organic pollutants, food additives, and antibiotics, offering a promising solution for future monitoring and restoration of ecological balance.
Article
Chemistry, Multidisciplinary
Lourdes Bazan-Diaz, Ariadna Perez, Naveen Kumar Reddy Bogireddy, J. Jesus Velazquez-Salazar, Israel Betancourt, Miguel Jose-Yacaman, Raul Herrera-Becerra, Ruben Mendoza-Cruz
Summary: In this study, we synthesized novel platinum-based nanoparticles with step-pyramidal growth induced by poly(diallyldimethylammonium chloride) (PDDA). The complex stepped pyramidal shape served as the central point for excellent catalytic reduction of 4-nitrophenol, surpassing the activity of bare Pt nanoparticles. These findings are significant for catalytic degradation of reactive molecules.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Chandra Sekhar Reddy Kolli, Naveen Kumar Reddy Bogireddy, Victor Hugo Martinez-Landeros, Rafael Ramirez-Bon
Summary: This study reports the fabrication of a reusable one-dimensional hollow semiconducting nanowire structure by electrospun-mediated nickel oxide nanowires (NiO NWs) as a sunlight-driven photocatalyst. The hollow nanowires exhibit high surface area for light-harvesting and redox reactions, a thin shell for fast charge separation, and a large length-diameter ratio for easy recycling. The NiO NWs show stable and efficient photocatalytic activity for the degradation of methylene blue under sunlight irradiation. The hollow structure and effective area of the NiO NWs contribute to their enhanced catalytic performance.
Review
Chemistry, Multidisciplinary
Yetzin Rodriguez Mejia, Naveen Kumar Reddy Bogireddy
Summary: This review focuses on the green synthesis of noble metal nanoparticles and their application in the catalytic reduction of 4-NP to 4-AP. It discusses the mechanisms of nanoparticle formation and parameters to be considered in the catalytic reduction process.
Article
Hospitality, Leisure, Sport & Tourism
Rene Ramon Rivera Lozano, Mauricio Ortigosa Hernandez
Summary: This research evaluates the satisfaction and loyalty of tourists based on the attributes of a tourist destination. The study found that emotional attributes have the greatest impact on tourist satisfaction, surpassing functional attributes. It is an empirical study that analyzes exit surveys from national and international tourists at four destinations along the Mexican Pacific Coast. The study's model is based on Oliver's Satisfaction Theory (1997) and utilizes Structural Equation Models to assess the impacts on satisfaction and loyalty. The findings conclude that the experiential component of a tourist destination has the greatest influence on tourist satisfaction and loyalty.
PERIPLO SUSTENTABLE
(2022)