Review
Chemistry, Multidisciplinary
Jian Gan, Lizhen Chen, Zhijun Chen, Jilei Zhang, Wenji Yu, Caoxing Huang, Yan Wu, Kai Zhang
Summary: Carbon dots (CDs), a type of carbon-based fluorescent nanomaterial, have gained attention for their excellent properties. Lignocellulosic biomass, a renewable natural resource, has the potential to produce CDs. This review summarizes the recent advances in the synthesis processes, formation mechanisms, structural characteristics, optical properties, and applications of lignocellulosic biomass-based CDs. It also proposes future research directions to improve the synthesis technology and enhance the properties of CDs using lignocellulosic biomass as raw materials.
Article
Energy & Fuels
Ping Huang, Shunjian Xu, Meng Zhang, Wei Zhong, Zonghu Xiao, Yongping Luo
Summary: A new concept of ultraviolet photovoltaic window using carbon quantum dots as a light absorber is proposed, which can generate electricity without affecting indoor lighting and effectively block the entry of ultraviolet light. The amount of dopant and thickness of TiO2 film significantly influence the power conversion efficiency and transmittance of the photovoltaic window, with the best efficiency achieved at 0.614% and the best average visible transmittance at 37.2% among prepared photovoltaic windows. The construction of ultraviolet photovoltaic windows successfully opens up a new application of carbon quantum dots in building-integrated photovoltaics.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Chemistry, Multidisciplinary
Lin Cui, Xin Ren, Mengtao Sun, Haiyan Liu, Lixin Xia
Summary: Carbon dots (CDs) are emerging as a promising carbon-based nanomaterial with unique electronic and optical properties, making them attractive for biomedical and photocatalytic applications. The CDs possess low toxicity, good biocompatibility, excellent photostability, tunable fluorescence, outstanding efficient up-converted photoluminescence behavior, and photo-induced electron transfer ability, which enhances their potential in various fields.
Article
Engineering, Chemical
Rashmiranjan Patra, Po-Chih Yang, Da-You Shu, Chien-Te Hsieh
Summary: This study synthesized graphitic C3N4 quantum dots (CNQDs) using an efficient method and demonstrated their superior sensitivity and selectivity in detecting metal ions in aqueous solutions. The CNQDs exhibited a maximal fluorescence intensity at 420 nm and had a high quantum yield of 13.6% under UV irradiation. The fluorescence quenching mechanism of CNQD suspension mainly originated from the strong interaction between the ions and the surface functionalities, followed by the photoinduced energy transfer effect.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Review
Chemistry, Analytical
B. N. Kumara, Palraj Kalimuthu, K. . S. Prasad
Summary: Photoluminescent-carbon nanoparticles (PL-CNPs) have attracted significant interest due to their distinct characteristics, including photoluminescence, high surface-to-volume ratio, low cost, ease of synthesis, high quantum yield, and biocompatibility. They have been extensively studied for their utility in various applications such as sensors, photocatalysts, bio-imaging probes, and optoelectronics. However, some PL-CNPs face limitations in their properties and selectivity, hindering their widespread application. To overcome these challenges, researchers have focused on developing new PL-CNPs with better properties and selectivity using different composite combinations. This review discusses the recent advancements in synthetic strategies, doping effects, photostability, biocompatibility, and applications of PL-CNPs in sensing, bioimaging, and drug delivery, as well as their limitations, future directions, and potential applications.
ANALYTICA CHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Zhengyi Bian, Alison Wallum, Arshad Mehmood, Eric Gomez, Ziwen Wang, Subhendu Pandit, Shuming Nie, Stephan Link, Benjamin G. Levine, Martin Gruebele
Summary: A major challenge in the bottom-up solvothermal synthesis of carbon dots is the removal of small-molecule byproducts or other impurities that affect their optical properties. In this study, the small-molecule species in the synthesis of carbon dots were identified and the reaction mixtures were purified, allowing for a detailed analysis of their properties. The results have important implications for achieving full-spectrum fluorescence from isomers of a single precursor molecule.
Article
Chemistry, Multidisciplinary
Huaidong Wang, Chong Qi, Ailing Yang, Xiaoxu Wang, Jie Xu
Summary: This study synthesized bright blue fluorescent N-doped GQDs with excellent fluorescence properties, demonstrating great potential for bioimaging applications. The N-GQDs also showed superior photostability and a long preservation period, making them promising candidates for bioimaging or biomarking.
Review
Chemistry, Physical
Pradeep Kumar Yadav, Subhash Chandra, Vivek Kumar, Deepak Kumar, Syed Hadi Hasan
Summary: Carbon quantum dots (CQDs), also known as carbon dots (CDs), are fluorescent carbon-based nanomaterials with excellent optical properties and unique characteristics such as water solubility, biocompatibility, low toxicity, eco-friendliness. They have a wide range of applications in various fields including bioimaging, biosensing, chemical sensing, nanomedicine, solar cells, drug delivery, and light-emitting diodes. This review paper discusses the structure, physical and chemical properties, synthesis approaches of CQDs, and their applications as catalysts in various organic synthesis reactions. Future challenges in this research field are also addressed.
Article
Chemistry, Multidisciplinary
Jiahui Xu, Qingjing Liang, Zijian Li, Vladimir Yu Osipov, Yangjian Lin, Binghui Ge, Qian Xu, Junfa Zhu, Hong Bi
Summary: In this study, a new strategy was developed to synthesize carbon dots with solid-state UVB emission. The obtained UVB emissive carbon dots exhibited high quantum yield and environmental robustness, making them highly desirable for applications in plant lighting.
ADVANCED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Guanxiong Liu, Baoqiang Li, Jie Li, Jiaxin Dong, Vladimir Baulin, Yujie Feng, Dechang Jia, Yuri V. Petrov, Aslan Yu Tsivadze, Yu Zhou
Summary: EGTA-derived carbon dots (EGTA-CDs) exhibit bone-targeting ability with a synthetic yield of 87.6%. EGTA-CDs show superior calcium ion affinity and better bone affinity compared to other derived carbon dots, indicating their potential as novel bone-targeting drugs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Xiangcao Li, Yanzhao Fu, Shaojing Zhao, JiaFu Xiao, Minhuan Lan, Benhua Wang, Kui Zhang, Xiangzhi Song, Lintao Zeng
Summary: Doping with heteroatoms is an effective way to regulate the physicochemical properties of carbon dots. Metal ion doping can induce noticeable alterations in the optical, electronic, and magnetic properties of CDs, with challenges and promising applications in various fields.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yinghui Liu, Dandan Guo, Ying Gao, Bihai Tong, Yu Li, Yuezhao Zhu
Summary: The study confirms the non-thermal effect of microwaves in the preparation of CDs, showing that the microwave non-thermal effect can enhance the luminescence performance of S-CDs.
APPLIED SURFACE SCIENCE
(2021)
Review
Chemistry, Inorganic & Nuclear
Huaxin Liu, Xue Zhong, Qing Pan, Yi Zhang, Wentao Deng, Guoqiang Zou, Hongshuai Hou, Xiaobo Ji
Summary: Among the carbon nanomaterials family, fluorescent carbon dots have emerged as significant members with outstanding characteristics and extensive applications. Despite the development of many synthesis strategies, achieving controllable synthesis remains challenging.
COORDINATION CHEMISTRY REVIEWS
(2024)
Article
Engineering, Environmental
Somayeh Marouzi, Majid Darroudi, Azadeh Hekmat, Kayvan Sadri, Reza Kazemi Oskuee
Summary: This study investigated the formation of nutrient Chia plant as a carbon source for the production of CQDs through a hydrothermal strategy, as well as analyzing their biological distribution and cytotoxicity. The obtained CQDs showed satisfactory fluorescence and quantum yield under optimal conditions, while confirming their non-toxicity and colloidal stability in various physiological conditions. Additionally, the biological distribution of CQDs was tested through in vivo experiments in rats, demonstrating their cost-effectiveness, biocompatibility, and bioavailability for potential medical imaging applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Analytical
Aphinan Saengsrichan, Pongtanawat Khemthong, Wanwitoo Wanmolee, Saran Youngjan, Jakkapop Phanthasri, Pariyapat Arjfuk, Pisut Pongchaikul, Sakhon Ratchahat, Pattaraporn Posoknistakul, Navadol Laosiripojana, Kevin C. -W. Wu, Chularat Sakdaronnarong
Summary: In this study, carbon dots with excellent photoluminescence performance were successfully synthesized from palm empty fruit bunch. Hybrid metal nanoparticles were synthesized on the surface of carbon dots to improve the detection sensitivity of ultra-low concentration H2O2.
ANALYTICA CHIMICA ACTA
(2022)
Article
Engineering, Electrical & Electronic
Xiaoting Feng, Yongqiang Zhao, Lingpeng Yan, Yi Zhang, Yuheng He, Yongzhen Yang, Xuguang Liu
JOURNAL OF ELECTRONIC MATERIALS
(2015)
Article
Chemistry, Multidisciplinary
Yaling Wang, Yongqiang Zhao, Feng Zhang, Lin Chen, Yongzhen Yang, Xuguang Liu
NEW JOURNAL OF CHEMISTRY
(2016)
Article
Chemistry, Physical
Genbai Chu, Zuhua Yang, Tao Xi, Jianting Xin, Yongqiang Zhao, Weihua He, Min Shui, Yuqiu Gu, Ying Xiong, Tao Xu
CHEMICAL PHYSICS LETTERS
(2018)
Article
Engineering, Electrical & Electronic
Jianting Xin, Anmin He, Wenbin Liu, GenBai Chu, Minghai Yu, Wei Fan, YuChi Wu, Tao Xi, Min Shui, Yongqiang Zhao, Pei Wang, Yuqiu Gu, Weihua He
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2019)
Article
Multidisciplinary Sciences
Yanli Tan, Yongqiang Zhao
Article
Physics, Multidisciplinary
Shui Min, Xi Tao, Yan Yong-Hong, Yu Ming-Hai, Chu Gen-Bai, Zhu Bin, He Wei-Hua, Zhao Yong-Qiang, Wang Shao-Yi, Fan Wei, Lu Feng, Yang Lei, Xin Jian-Ting, Zhou Wei-Min
Summary: In this study, the acceleration and motion characteristics of an aluminum flyer driven by laser plasma were investigated. The results showed that laser plasma collision can generate a metal flyer with integrated shape and a velocity of several kilometers per second, demonstrating its potential applications.
ACTA PHYSICA SINICA
(2022)
Article
Engineering, Electrical & Electronic
Yang Qian, Han Chenhui, Mi Xiaonan, Wang Xiao, Wang Xiaoqiong, Zhao Yongqiang, Yang Chao
Summary: This study analyzed the vertical aerosol distribution characteristics on haze and clear days in the Yuncheng area of Shanxi Province using three years of data. The results showed that aerosols were mainly concentrated in the atmosphere layer of 0-2 km on haze days, with higher aerosol height during the day than at night. Compared to clear days, haze days had significantly higher aerosol extinction coefficient and higher concentration of small-particle aerosols.
LASER & OPTOELECTRONICS PROGRESS
(2022)
Article
Green & Sustainable Science & Technology
Quansheng Li, Yanjun Zhang, Yongqiang Zhao, Yuanhao Zhu, Yueguan Yan
Summary: This study investigates the development process and stability of the rock strata arch structure through theoretical analysis and numerical simulation. Calculation formulas for the development height and critical width of the instability of the arch structure are obtained and validated. The results have important implications for preventing ground disasters caused by underground coal mining and controlling ground subsidence.
Article
Green & Sustainable Science & Technology
Yongqiang Zhao, Quansheng Li, Kai Zhang, Yingming Yang, Dongxiao Zhang, Weilong Zhang, Xiaojun Ding
Summary: In this study, damaged prefabricated crack sandstone specimens were prepared and subjected to cyclic loading-unloading test before uniaxial loading test. The evolution law of peak strength, elastic modulus, and peak strain of specimens with different damage degrees was studied and a quantitative relationship between P-wave velocity and damage degree was obtained. The acoustic emission (AE) count and energy evolution characteristics of specimens with different damage degrees were analyzed. It was revealed that with the increase in damage degree, the elastic energy stored in the specimens can be converted into crack propagation more quickly, leading to rapid increase in dissipated energy density and complete rock failure. The research results can provide theoretical support for stability analysis and control of underground engineering rock mass under multiple disturbances.
Article
Optics
Yang Qian, Guo Yuanyuan, Sun Yingshu, Song Xiuyu, Mi Xiaonan, Luan Qing, Zhao Yongqiang, Li Mengwei
Summary: This study examines the vertical distribution characteristics and types of aerosols in the Taiyuan Basin using CALIOP data, and finds that the aerosol extinction coefficient decreases with increasing height on hazy days, while it is lower on clear days. Weather conditions have an impact on the vertical distribution of aerosols in the Taiyuan Basin, especially the influence of northwest or westward winds and low-level warm advection.
CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG
(2022)
Article
Optics
Shui Min, Yang Xi, Yu Minghai, Wu Yuchi, Zhang Tiankui, Zhao Yongqiang, Xi Tao, Xin Jianting, Yang Lei, He Weihua, Chu Genbai, Gu Yuqiu, Liu Xudong
Summary: In this study, interface instability and mixing between tin and polymer foam under unsupported shock loading is investigated via high-energy radiography. When tin is shocked into liquid, spikes evolve into a mushroom tip, while at lower loading pressures, spike growth is suppressed by tin's strength. The spikes consist of one thin tip and one thick root, with severe mixing leading to curve and fragmentation of spike tip. Contribution of RTI is evaluated, with results showing negligible impact.
CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG
(2021)
Article
Physics, Multidisciplinary
Chu Gen-Bai, Yu Ming-Hai, Shui Min, Fan Wei, Xi Tao, Jing Long-Fei, Zhao Yong-Qiang, Wu Yu-Chi, Xin Jian-Ting, Zhou Wei-Min
ACTA PHYSICA SINICA
(2020)
Article
Physics, Multidisciplinary
Shui Min, Yu Ming-Hai, Chu Gen-Bai, Xi Tao, Fan Wei, Zhao Yong-Qiang, Xin Jian-Ting, He Wei-Hua, Gu Yu-Qiu
ACTA PHYSICA SINICA
(2019)
Proceedings Paper
Education & Educational Research
Dongli Jiao, Jinsheng Li, Yongqiang Zhao
EDUCATION MANAGEMENT, EDUCATION THEORY AND EDUCATION APPLICATION
(2011)
