Article
Chemistry, Physical
Jinglin Li, Hao Yuan, Jiaxin Li, Wenjie Zhang, Yanqi Liu, Na Liu, Haijie Cao, Zhengbo Jiao
Summary: Chemically bonded BiVO4/ZnO quantum dot heterostructures were fabricated using a simple solution dry-out method, forming chemically bonded interfaces (CBIs) that promote photoexcited electron transfer and serve as hole-blocking layers. The CBIs showed excellent performance in both UV and visible light regions, leading to significantly increased photocurrent density in BiVO4/ZnO QDs without a cocatalyst. Additionally, ethylene glycol was found to partially reduce Bi ions to elemental bismuth during the calcination process, contributing to improved water oxidation kinetics.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Biochemistry & Molecular Biology
Lingyun Hao, Yuanyuan Yu, Zhanming Liang, Hewei Hou, Xi Liu, Changzhou Chen, Douyong Min
Summary: In this study, nitrogen-doped carbon quantum dots (NCQDs) with different properties were prepared by using kraft lignin as the raw material and EDA as a nitrogen dopant. The amount of EDA added affected the carbonization reaction and surface state of NCQDs. The results showed that the surface defects of NCQDs increased, and the fluorescence intensity and stability improved. NCQDs also exhibited high photo-catalytic activity in degrading methylene blue under simulated sunlight irradiation.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Shahina Riaz, Firoz Khan, Z. A. Raza, Rajesh Theravalappil, Masoud Al-Rasheidi, Nadir Abbas
Summary: Researchers have developed a novel quantum dot-sensitized all-weather solar cell that can generate energy during both day and night. The cell uses nitrogen and sulfur doping to improve charge injection efficiency and utilizes a long persistence phosphor to store unabsorbed light and excite the quantum dots at night.
MATERIALS TODAY ENERGY
(2023)
Review
Engineering, Environmental
Feixia Zhao, Xueying Li, Mingxing Zuo, Yunshan Liang, Pufeng Qin, Hui Wang, Zhibin Wu, Lin Luo, Chao Liu, Lijian Leng
Summary: In this paper, the precursor materials, physical and chemical properties, as well as the preparation methods of CQDs decorated photocatalysts are discussed. The effects of reaction conditions, precursor and reaction medium on the structural characteristics of CQDs decorated photocatalysts are summarized. The applications and recent progress of CQDs decorated photocatalysts, including organic pollutants degradation, hydrogen production, and carbon dioxide conversion, are reviewed. The challenges and suggestions for future research of CQDs decorated photocatalysts are also proposed.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Niall M. C. Mulkerns, William H. Hoffmann, Javier Ramos-Soriano, Noelia de la Cruz, Teodoro Garcia-Millan, Robert L. Harniman, Ian D. Lindsay, Annela M. Seddon, M. Carmen Galan, Henkjan Gersen
Summary: A practical method based on measuring the refractive index of nanoparticles in suspension is proposed for determining the ratio of functionalisation layer volume to particle volume. The method is successfully applied to different nanoparticles and shows the ability to detect differences in surface functionalisation or composition of nanosized particles. This non-destructive and rapid method is well-suited for industrial particle characterisation and biological applications.
Article
Engineering, Chemical
Chaoqun Li, Ziqing Zhao, Shaozhu Fu, Xingyue Wang, Yuhan Ma, Shuangshi Dong
Summary: This study successfully prepared a visible-light-responsive catalyst, carbon quantum dots anchored hollow microsphere Bi2WO6 (CQDs/HBWO), which showed high catalytic activity for the photocatalytic degradation of TCH. The presence of carbon quantum dots significantly improved the photoreduction efficiency of Cr (VI) in the bipollutant system by acting as a photogenerated hole scavenger, with h+, center dot O2 and center dot OH identified as the main reactive species.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yuri Choi, Sungho Choi, Inhui Lee, Trang Vu Thien Nguyen, Sanghyun Bae, Yong Hwan Kim, Jaegeon Ryu, Soojin Park, Jungki Ryu
Summary: This study presents an approach utilizing earth-abundant and non-toxic photocatalysts for efficient hydrogen production and biomass reforming using solar energy. Si flakes (SiF) are used for efficient light-harvesting, and Ni-coordinated N-doped graphene quantum dots (Ni-NGQDs) enable efficient and stable biomass reforming and hydrogen production. The SiF/Ni-NGQDs demonstrate record-high hydrogen productivity and vanillin yield under simulated sunlight. This strategy provides valuable insights for the practical applications of solar energy and biomass refinement.
ADVANCED MATERIALS
(2023)
Article
Spectroscopy
Xiaoping Chen, Jianwei Lin, Yafeng Zhuang, Siqi Huang, Jinghua Chen, Zhizhong Han
Summary: A new ratiometric fluorescence sensor is developed for the selective detection of chlorotetracycline (CTC) using dual-mode fluorescence method, demonstrating good selectivity and sensitivity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Multidisciplinary
Hong-Yan Wang, Wei-Hua Xie, Dong-Dong Wei, Rong Hu, Na Wang, Kai Chang, Shuang-Lei Lei, Bin Wang, Rui Cao
Summary: A hybrid photocatalytic assembly with efficient charge separation and great synergy was developed via thiophene immobilization, achieving a high syngas production rate and adjustable H-2/CO ratio under visible-light irradiation.
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
Thermodynamics
Xiaohui Wang, Li Xu, Shengbo Ge, Shin Ying Foong, Rock Keey Liew, William Woei Fong Chong, Meenakshi Verma, Mu. Naushad, Young-Kwon Park, Su Shiung Lam, Qian Li, Runzhou Huang
Summary: Polycrystalline silicon solar cells modified with biomass resources show promise for achieving carbon neutrality. This study develops a solution-casting approach to synthesize ethylene-vinyl acetate films modified with ultra-high fluorescent carbon quantum dots (CQDs). Coating these films onto the solar cells increased the power conversion efficiency from 13.19% to 13.65%. The ultra-high fluorescent CQDs, derived from Ginkgo biloba, demonstrated high fluorescence and expand the potential applications of EVA films in the photovoltaic, environment, and energy fields.
Article
Materials Science, Multidisciplinary
Fan Li, Chun-Lai Wang, Sheng Ding, Kun Yang, Chang-Jun Liu, Feng Tian
Summary: In this study, carbon dots (CDs) or nanocomposites of CDs and TiO2 were used to decorate titanium dioxide nanotube arrays (TiO2NTs) by solvothermal method. The decorated TiO2NTs showed enhanced photocurrent under visible light, with CDs-TiO2NTs-0 showing the highest photocurrent density. Photodegradation measurements revealed that CDs-TiO2 decorated TiO2NTs exhibited superior photocatalytic activity under both UV and visible light illumination.
Article
Chemistry, Physical
Youwei Sun, Xingzhou Yuan, Yanjuan Wang, Wanshu Zhang, Yanda Li, Zhuolei Zhang, Ji Su, Jian Zhang, Shaozheng Hu
Summary: The CeO(2)QDs/g-C3N4 photocatalyst significantly enhances visible light absorption, reduces electron-hole recombination rate, and improves photodegradation performance through an appropriate Z-scheme charge transfer mechanism.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Zhihang Long, Xin Tong, Rui Wang, Ali Imran Channa, Xin Li, Yimin You, Li Xia, Mengke Cai, Hongyang Zhao, Zhiming M. Wang
Summary: In this study, environmentally friendly AISe/ZnSe core/shell QDs were successfully synthesized and it was demonstrated that adjusting the shell thickness can improve the performance of the photoelectrochemical device, suggesting their potential application in solar energy conversion.
Article
Chemistry, Physical
Shuting Zhang, Junjie Chen, Qilei Zhang, Xingyu Liu, Aiqi Wang, Wenjie Sun, Jundong Huang, Changlian Peng, Qianming Wang
Summary: This study used Mikania as a carbon source to develop a new type of carbon polymer quantum dots (CPDs), and explored the effect of this nanoscale fertilizer on sesame growth. Results showed that CPDs at a suitable concentration had a physiological response to sesame germination without toxicity. Confocal images demonstrated that CPDs could spread from the roots of sesame seeds to the stems and leaves. This study provides new ideas for waste-plant management and biological control, and emphasizes the importance of nanomaterials in related fields.
SURFACES AND INTERFACES
(2022)
Article
Energy & Fuels
Siddharth Sradhasagar, Omkar Subhasish Khuntia, Srikanta Biswal, Sougat Purohit, Amritendu Roy
Summary: In this study, machine learning models were developed to predict the bandgap and its character of double perovskite materials, with LGBMRegressor and XGBClassifier models identified as the best predictors. These models were further employed to predict the bandgap of novel bismuth-based transition metal oxide double perovskites, showing high accuracy, especially in the range of 1.2-1.8 eV.
Article
Energy & Fuels
Wei Shuai, Haoran Xu, Baoyang Luo, Yihui Huang, Dong Chen, Peiwang Zhu, Gang Xiao
Summary: In this study, a hybrid model based on numerical simulation and deep learning is proposed for the optimization and operation of solar receivers. By applying the model to different application scenarios and considering multiple performance objectives, small errors are achieved and optimal structure parameters and heliostat scales are identified. This approach is not only applicable to gas turbines but also heating systems.
Article
Energy & Fuels
Mubashar Ali, Zunaira Bibi, M. W. Younis, Muhammad Mubashir, Muqaddas Iqbal, Muhammad Usman Ali, Muhammad Asif Iqbal
Summary: This study investigates the structural, mechanical, and optoelectronic properties of the BaCuF3 fluoroperovskite using the first-principles modelling approach. The stability and characteristics of different cubic structures of BaCuF3 are evaluated, and the alpha-BaCuF3 and beta-BaCuF3 compounds are found to be mechanically stable with favorable optical properties for solar cells and high-frequency UV applications.
Article
Energy & Fuels
Dong Le Khac, Shahariar Chowdhury, Asmaa Soheil Najm, Montri Luengchavanon, Araa mebdir Holi, Mohammad Shah Jamal, Chin Hua Chia, Kuaanan Techato, Vidhya Selvanathan
Summary: A novel recycling system is proposed in this study to decompose and reclaim the constituent materials of organic-inorganic perovskite solar cells (PSCs). By utilizing a one-step solution process extraction approach, the chemical composition of each layer is successfully preserved, enabling their potential reuse. The proposed recycling technique helps mitigate pollution risks, minimize waste generation, and reduce recycling costs.
Article
Energy & Fuels
Peijie Lin, Feng Guo, Xiaoyang Lu, Qianying Zheng, Shuying Cheng, Yaohai Lin, Zhicong Chen, Lijun Wu, Zhuang Qian
Summary: This paper proposes an open-set fault diagnosis model for PV arrays based on 1D VoVNet-SVDD. The model accurately diagnoses various types of faults and is capable of identifying unknown fault types.