Article
Chemistry, Physical
Zefan Zhang, Christian Hilty
Summary: The reversible adsorption of CO2-derived species to graphene quantum dots in CO2 electroreduction reaction was characterized using nuclear spin hyperpolarized NMR. The study found a significant difference in the relaxation rates of bound and free species, indicating reversible binding. pH-dependent adsorption and desorption rate constants were measured, along with the average binding distance.
Article
Engineering, Environmental
Jia Gu, Yang Song, Yi Yang, Chaoting Guan, Jin Jiang
Summary: In this work, quantum chemical calculations were used to investigate the reaction between hydroperoxides and the first triplet states of quinones, which were excited by UV irradiation. The attack of ionized hydroperoxides on the C-O and C-H(Cl) bonds of quinones was found to be kinetically unfeasible due to large forward energy barriers. However, single electron transfer from ionized hydroperoxides to quinones was tentatively determined, leading to the formation of peroxy radicals and semiquinone radicals. These theoretical findings have implications for the degradation of pollutants and the understanding of reactions in natural waters.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Physics, Condensed Matter
Ashis K. Manna, Simeon J. Gilbert, Shalik R. Joshi, Takashi Komesu, Peter A. Dowben, Shikha Varma
Summary: This study demonstrates the tuning of photoresponse and electronic structure for ion-induced graphene quantum dots by varying the ion irradiation processing of monolayer graphene. Nanoscale quantum dots were synthesized for graphene after irradiation within the ion energy range of 100-250 eV. Notably, changes to the photo-response and enhancement of UV absorbance were achieved by simply adjusting the ion energy, showing potential for designing graphene quantum dot-based photodetectors without the need for metal nanoparticles or hybrid-metal platforms.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Chemistry, Multidisciplinary
Daehan Choi, Jung Hyung Kim, Deuk Chul Kwon, Chae Ho Shin, Hyun Ryu, Euijoon Yoon, Hyo-Chang Lee
Summary: A new self-assembly method is reported in this study, which uses controlled extremely low plasma ion energy in rare gas environments to produce silicon nanoparticles. This method allows direct crystallization nucleation on the surface of amorphous film in nonharsh and nontoxic environments, promoting nucleation and growth rates of crystalline silicon nanoparticles. The size of crystalline silicon nanoparticles can be tailored to the nanometer scale through control of plasma ion energy.
Article
Chemistry, Physical
Qin Hong, Xiao-Yuan Wang, Ya-Ting Gao, Jian Lv, Bin-Bin Chen, Da-Wei Li, Ruo-Can Qian
Summary: In this study, an extreme gradient boosting (XGBoost) model is developed to guide the synthesis of fluorescent carbon dots (CDs) with high fluorescence intensity and tunable emission. The XGBoost model shows excellent performance in predicting the optical properties of CDs, and various green or blue fluorescent CDs with adjustable emission centers and solubility properties are successfully designed and fabricated. The CDs synthesized using this approach have been applied in Fe3+ detection, sustained drug release, whole-cell imaging, and polymer film preparation.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Analytical
Dongquan Leng, Jihao Zhao, Xiang Ren, Rui Xu, Lei Liu, Xuejing Liu, Yuyang Li, Qin Wei
Summary: In this study, a split-type immunoassay strategy initiated by cation exchange and altering the capacity of an electron donor was optimized, using MoSe2/CdSe as a photoelectrode substrate and silver ions as the initiator of CE. The combination of ascorbate oxidase with MSNs improved the sensor's sensitivity and reliability, resulting in a broad linear range and low detection limit when applied to neuron-specific enolase.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Nawrzhan Serkjan, Xiong Liu, Tursun Abdiryim, Fangfei Liu, Hujun Zhang, Aygul Kadir, Yajun Liu, Xinsheng Tang, Qian Cheng
Summary: A novel self-powered UV photodetector (UV PD) has been developed by assembling poly(3,4-ethylenedioxyselenophene) (PEDOS)/FTO and ZnO nanoarrays (ZnO NRs)/FTO face-to-face. The addition of carbon quantum dots (CQDs) to ZnO NRs enhances the performance of the UV PD. PEDOS, as a hole transport material, improves charge transfer ability and forms p-n heterojunction with ZnO NRs, enabling better photoelectric performance without external bias. Pyroelectric effect between ZnO NRs and CQDs further enhances photoresponsivity and shortens response time of UV PD. The CQDs-ZnO NRs/PEDOS UV PD exhibits remarkable performance with photoresponsivity of 22.62 mA W-1 and response speed of 0.09s/0.12s (rise time/decay time) under low ultraviolet light intensity (0.32 mW cm(-2), wavelength 365 nm) at 0 V bias. This work offers an effective approach to modulate UV PD performance.
Article
Environmental Sciences
Jianqiao Zhang, Zhiyang Li, Qian Lei, Dan Zhong, YiXin Ke, WenJie Liu, Lei Yang
Summary: In this study, a novel carbon quantum dots-modified N-BiOCl photocatalyst was developed to activate persulfate for efficient degradation of bisphenol A (BPA) under visible light irradiation. The introduction of N atoms and decorated carbon quantum dots improved the photoelectric properties of N-BiOCl, facilitating charge separation and electron migration. The 7% CDs-N-BiOCl nanocomposite synergistically activated PS and achieved rapid and effective degradation of BPA, with degradation efficiency and mineralization reaching 100% and 66.4%, respectively. The system displayed good adaptability, durability, and interference resistance, and the photodegradation intermediates promoted the growth of Escherichia coli, indicating its eco-friendliness for practical application.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agricultural Engineering
Xiaoxiao Li, Xutong Liu, Yuhang Su, Tianyu Jiang, Dongna Li, Xiaojun Ma
Summary: This study successfully synthesized blue emissive carbon quantum dots (CQDs) using enzymatic hydrolysis lignin (EHL) as the precursor and organic acids for modification. The modified CQDs showed improved water solubility and smaller particle size, with citric acid modification resulting in enhanced fluorescence intensity and quantum yield. The study also developed CQDs/PVA fluorescent nanocomposite films with UV shielding and antioxidant properties.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Multidisciplinary
Yu Luo, Junjie Wang, Pu Wang, Chaohuang Mai, Jian Wang, Boon Kar Yap, Junbiao Peng
Summary: UV irradiation can enhance the performance of ZnO-based inverted QLEDs, leading to increased maximum EQE and PE. Despite a gradual decrease in electron current from ZnO during storage, the maximum EQE of QLEDs can still be improved.
Article
Nanoscience & Nanotechnology
Shaqi Fu, Dandan Qiao, Yuancong Luo, Zheng Jiao, Lingli Cheng
Summary: Heteroatom doping is used to generate oxygen vacancies and enhance the electrochemical properties of materials, but achieving simultaneous defect generation is challenging. In this study, TiO2 quantum dots/graphene aerogel composites were synthesized via a hydrothermal method and successfully doped with N and S atoms using electron beam irradiation. The introduced defects and heteroatom doping improved the electrochemical performance, particularly in the NT-NSG-140 sample irradiated at 140 kGy. This work provides a simple and environmentally friendly method for designing high-performance materials with heteroatoms.
ACS APPLIED NANO MATERIALS
(2023)
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
Engineering, Environmental
Hongwu Tian, Leizi Jiao, Kun Wang, Xiande Zhao, Fengjing Cao, Daming Dong
Summary: This article introduces the extension of the detection range of smartphone cameras to the ultraviolet region using perovskite quantum dots, and the realization of a solar UV radiation sensor and a water chemical oxygen demand sensor. These sensors can measure water quality and solar UV index using smartphones anytime and anywhere.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Nadeesha L. Kothalawala, Sang Won Kim, Namhee Kim, Collan J. Henderson, Minsu Seol, Fuqian Yang, Seung-Yeon Kwak, Kyu Young Hwang, Won-Joon Son, Hyeon-Jin Shin, Hyeonho Choi, Byeong-Su Kim, Doo Young Kim
Summary: Carbon dots are promising carbonaceous nanomaterials for various applications. However, the presence of bright molecular fluorophores produced during their synthesis poses challenges to their development. This study highlights the need for rigorous separation and purification steps for both hydrophilic and low-oxygen-content carbon dots.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Engineering, Environmental
Hongbo Ming, Danlei Wei, Yang Yang, Boqiang Chen, Can Yang, Jinshui Zhang, Yidong Hou
Summary: A metal-free carbon quantum dots (CQDs) functioned polymer carbon nitride (PCN) was synthesized and used as an efficient photocatalyst for peroxymonosulfate (PMS) activation towards bisphenol A (BPA) degradation under visible-light irradiation. The incorporation of CQDs in PCN enhanced the performance for PMS activation and showed good cyclic stability. This study provides a facile synthetic strategy to prepare metal-free catalyst for photocatalytic activation of PMS in wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Zhilei Ge, Zhaoming Su, Chad R. Simmons, Jiang Li, Shuoxing Jiang, Wei Li, Yang Yang, Yan Liu, Wah Chiu, Chunhai Fan, Hao Yan
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Multidisciplinary
Fei Zhang, Chad R. Simmons, Jade Gates, Yan Liu, Hao Yan
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2018)
Article
Nanoscience & Nanotechnology
Zhilei Ge, Jinglin Fu, Minghui Liu, Shuoxing Jiang, Alessio Andreoni, Xiaolei Zuo, Yan Liu, Hao Yan, Chunhai Fan
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Biochemistry & Molecular Biology
Yu Zhou, Xiaodong Qi, Yan Liu, Fei Zhang, Hao Yan
Article
Chemistry, Multidisciplinary
Xu Zhou, Sarthak Mandal, Shuoxing Jiang, Su Lin, Jianzhong Yang, Yan Liu, David G. Whitten, Neal W. Woodbury, Hao Yan
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Chemistry, Multidisciplinary
Zhi Zhao, Chao Wang, Hao Yan, Yan Liu
ADVANCED FUNCTIONAL MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Cheng Zhang, Zhiyu Wang, Yan Liu, Jing Yang, Xinxin Zhang, Yifan Li, Linqiang Pan, Yonggang Ke, Hao Yan
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Chemistry, Multidisciplinary
Xiang Lan, Xu Zhou, Lauren A. McCarthy, Alexander O. Govorov, Yan Liu, Stephan Link
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Article
Biochemistry & Molecular Biology
Fan Hong, Duo Ma, Kaiyue Wu, Lida A. Mina, Rebecca C. Luiten, Yan Liu, Hao Yan, Alexander A. Green
Article
Chemistry, Multidisciplinary
Chad R. Simmons, Tara MacCulloch, Fei Zhang, Yan Liu, Nicholas Stephanopoulos, Hao Yan
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Multidisciplinary
Guangbao Yao, Fei Zhang, Fei Wang, Tianhuan Peng, Hao Liu, Erik Poppleton, Petr Sulc, Shuoxing Jiang, Lan Liu, Chen Gong, Xinxin Jing, Xiaoguo Liu, Lihua Wang, Yan Liu, Chunhai Fan, Hao Yan
Article
Chemistry, Multidisciplinary
Shuoxing Jiang, Nibedita Pal, Fan Hong, Nour Eddine Fahmi, Huiyu Hu, Matthew Vrbanac, Hao Yan, Nils G. Walter, Yan Liu
Summary: Controlling the nucleation step of a self-assembly system is crucial for engineering structural complexity and dynamic behaviors. This study investigates the inherent dynamics of three general nucleation modes in DNA tile-based self-assembly and reveals temperature-dependent kinetics and a nucleation-growth model are key factors. The assembly of tiles can be externally regulated by the hosting frame and an UV-responsive trigger, offering a general strategy for controlling the self-assembly process.
Article
Chemistry, Physical
Zhi Zhao, Xiahui Chen, Jiawei Zuo, Ali Basiri, Shinhyuk Choi, Yu Yao, Yan Liu, Chao Wang
Summary: A three-dimensional DNA rack (DR) structure is proposed to assemble single emitters within ultra-small plasmonic nanocavities formed by closely coupled gold nanorods (AuNRs) with high precision. The unique saddle shape of DR allows linear alignment of AuNRs with tight gaps, resulting in nanocavities with high Q factors. By incorporating a DNA docking strand, single fluorescent emitters can be positioned within the nanocavities, leading to significant enhancements in fluorescence intensity and reduction in emission lifetime, demonstrating strong emitter-cavity interactions.
Review
Materials Science, Multidisciplinary
Zhi Zhao, Yutao Han, Yan Liu
Summary: Nanophotonics is an emerging field with various applications. Traditional fabrication methods have limitations, while DNA origami enables precise assembly of nanophotonic systems through bottom-up strategies. This review demonstrates the patterning capability of DNA origami and discusses its promising applications through representative examples.
OPTICAL MATERIALS EXPRESS
(2022)
Meeting Abstract
Chemistry, Multidisciplinary
Chad R. Simmons, Tara MacCulloch, Fei Zhang, Yan Liu, Nicholas Stephanopoulos, Hao Yan
ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES
(2019)
