Article
Chemistry, Multidisciplinary
Muhammad T. Sajjad, Ashu K. Bansal, Francesco Antolini, Eduard Preis, Lenuta Stroea, Stefano Toffanin, Michele Muccini, Luca Ortolani, Andrea Migliori, Sybille Allard, Ullrich Scherf, Ifor D. W. Samuel
Summary: The study demonstrated a novel method for preparing highly emissive quantum dots in a polymer matrix for color conversion, achieving efficient color conversion by adjusting the blend ratio and baking temperature/time. Highly emissive quantum dots were obtained through thermal decomposition of the precursor, with their size and emission controlled.
Article
Optics
Anns George, Saritha K. Jose, Adon Jose, Cyriac Joseph, P. R. Biju
Summary: A series of Ca(2-x-y)Sb2O7:xDy(3+),yEu(3+) phosphors with tunable multicolor luminescence were synthesized via solid-state reaction method. The results show that the phosphors exhibit a wide emission spectrum and adjustable chromaticity coordinates, making them promising candidates for white light-emitting diodes (WLEDs) and multicolor displays.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Kangrui Qiang, Yingqiang Yu, Yulong Ye, Liang Liang, Qinan Mao, Yang Ding, Yiwen Zhu, Meijiao Liu, Jiasong Zhong
Summary: This study developed a novel Sr2GdGa0.4Al0.6O5:Bi3+,Sm3+ phosphor with excellent luminescence performance for optical thermometry based on a cation-substitution strategy. By introducing various Al3+ ions, the emission peak of Bi3+ ions could be controlled and shifted, enabling effective signal differentiation for temperature detection.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Qianyu Zheng, Lili Xie
Summary: In this study, we present the rational design and synthesis of NaYF4:Tb3+/NaYF4:Eu3+ heterostructured microrods emitting multifaceted luminescence within a single microrod. Our experimental results demonstrate the effectiveness of the heterostructured design in preserving the afterglow intensity while facilitating controlled emission modulation. The strategic integration of Eu3+ in the outer layer of the microrods allows for the realization of diverse luminescent responses. The excitation-dependent multifaceted luminescence displayed by the synthesized microrods presents a compelling case to advance multicolor high-level anti-counterfeiting and information encryption.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Zhijun Li, Zeyu Lyu, Pengcheng Luo, Shuai Wei, Chengyu Zhuo, Dashuai Sun, Sida Shen, Hongpeng You
Summary: A novel Gd3GaO6:Bi3+,Er3+ phosphor with multicolor emissions was prepared, and a quad-mode anti-counterfeiting material with high-security levels was designed. The phosphor exhibits emissions from both Bi3+ and Er3+ under specific excitation wavelengths.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Shuai Huang, Mengmeng Shang, Yu Yan, Peipei Dang, Jun Lin
Summary: Co-doping mixed-valence Eu2+/3+ in a single-phase phosphor is an efficient method for emission color regulation, anticounterfeiting, and ratiometric temperature sensing. In this study, mixed-valence Eu-doped Sr1.95+xLi1-xSi1-xAlxO4F (0 <= x <= 0.25) phosphors were prepared and the correlation between local phase structures and luminescence properties was investigated. The results showed that the coexistence of Eu2+ and Eu3+ in single-phase Sr1.95+xLi1-xSi1-xAlxO4F:0.05Eu (0 <= x <= 0.25) phosphors can be achieved by replacing Si4+-Li+ ion pairs with Al3+-Sr2+ ion pairs, and these phosphors exhibited excellent fluorescent anticounterfeit and temperature sensing performances.
INORGANIC CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Hao Peng, Gaozhan Xie, Yang Cao, Longyan Zhang, Xi Yan, Xiao Zhang, Shihao Miao, Ye Tao, Huanhuan Li, Chao Zheng, Wei Huang, Runfeng Chen
Summary: We have successfully modulated the afterglow emission color in water-soluble polymer systems through phosphorescence Forster resonance energy transfer (FRET) technique, achieving full-color afterglow emission from blue to red and even white. This study provides important guidance in developing high-performance afterglow polymers with on-demand color tuning ability for optoelectronic applications.
Article
Engineering, Environmental
Liuqi Kong, Yan Zhu, Shaochen Sun, Hongye Li, Shuo Dong, Fei Li, Farong Tao, Liping Wang, Guang Li
Summary: Polymer-based room temperature phosphorescence (RTP) materials have been developed with persistent multicolor and near-infrared (NIR) emission. These materials showed tunable multicolor afterglow and persistent luminescence in the NIR region, making them suitable for applications in multiple information encryption and multicolor displays.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Bin Yu, Jiale Chen, Minghao Sun, Nianmin Chen, Yuchan Li, Yunjian Wang
Summary: This study synthesizes Eu3+-activated BaTi(BO3)(2) red-emitting phosphors and co-doped them with Na+ ions, obtaining luminescent materials with high color purity, low color temperature, and strong thermal stability. The prototype LED device emits stable and bright white light with a wide color gamut and high color purity.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Xinyang Shi, Yu Xue, Qinan Mao, Lang Pei, Xinyue Li, Meijiao Liu, Qi Zhang, Jiasong Zhong
Summary: In this study, Eu3+ single-doped Ca2Sb2O7:Eu3+ phosphors with high relative sensitivity (Sr) were developed for dual-emitting-center luminescence thermometry. The anti-thermal quenching behavior of Eu3+ originating from the energy transfer (ET) of host->Eu3+ was found and proved. Adjustable color emission from blue to orange was achieved. The developed phosphors are expected to be prospective candidates in luminescence thermometers and LED devices in various conditions due to their excellent performance in optical thermometry, color-tunable properties, and outstanding acid and alkali resistance for PDMS films.
INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Yi Ma, Beibei Zhang, Zhili Xu, Wei Lu, Xinyue Li, Xiaoke Wang, Zhiguo Ge, Qingchun Li, Zhipeng Li
Summary: High quality Gd2O2S-based phosphors with high crystallinity, good dispersibility, and relatively good size uniformity were achieved through optimization of flux type and components. The emission properties of matrix and activated ions were studied in the single-doping system, while the composition and coexcitation wavelength of the co-doping system were designed. Adjustable multicolor emission and energy transfer were realized in the co-doping system, supported by spectral overlap, fluorescence intensity change, and fluorescence lifetime decrease. The co-doping phosphors showed excellent thermal stability, adjustable multicolor emission under electron-beam excitation, and good paramagnetic properties, suggesting their potential as optical-magnetic bifunctional materials in luminescence and bioimaging fields.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Fengfeng Chi, Liangliang Pan, Bin Jiang, Zhangchao Ji, Jie Cheng, Bing Wang, Xiantao Wei, Shengli Liu
Summary: Tb3+ and Eu3+ doped La4GeO8 phosphors with multicolor emission were synthesized and their photoluminescence properties were investigated. The energy transfer from Tb3+ to Eu3+ in La4GeO8 is attributed to quadrupole-quadrupole interaction. The La4GeO8:0.07Tb3+,0.01Eu3+ phosphor exhibits good thermal stability with activation energies of 0.186 eV and 0.187 eV for Tb3+ and Eu3+ ions, respectively. By adjusting the content ratio of Eu3+ to Tb3+, the La4GeO8:Tb3+,Eu3+ phosphors can achieve multicolor luminescence and tunable chromaticity. These findings suggest that La4GeO8:Tb3+,Eu3+ phosphors are promising for solid-state lighting applications.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
L. Vijayalakshmi, K. Naveen Kumar, Jong Dae Baek
Summary: Multicolor emitting Dy3+/Eu3+ coactivated lithium zinc borate (LZB) glasses were prepared by the melt-quenching method. Dy3+ glasses exhibited blue, yellow, and red photoluminescence (PL) bands at various wavelengths. Eu3+ glasses exhibited strong orange and reddish-orange emissions. Efficient energy transfer from Dy3+ to Eu3+ was observed through dipole-dipole interaction. The glasses have potential applications in warm white light and multicolor emitting devices.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Yufeng Sun, Minjie Peng, Aiguo Wu, Yujie Zhang
Summary: A rapid colorimetric detection method using iodide-responsive copper-gold nanoparticles was established for detecting dopamine in urine and serum. The method provides a rapid response, excellent selectivity, and interference immunity.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yufeng Sun, Minjie Peng, Aiguo Wu, Yujie Zhang
Summary: In this study, a rapid colorimetric detection method was developed for dopamine in urine and serum samples. The method showed fast response and color variability, with good stability, high selectivity, and resistance to interference. By utilizing copper-gold nanoparticles, a multicolor colorimetric detection of dopamine was achieved.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Jun Zhang, Rui-Jia Zhou, Qing-Yu Chang, Zhi-Jun Sui, Xing-Gui Zhou, De Chen, Yi-An Zhu
Summary: Vanadium-oxide-based catalysts show promise in propane dehydrogenation, with single-atom doping used to modify the electronic structure of V2O3 surfaces and enhance catalytic properties. Single atoms act as promoters and active sites, impacting the rate-limiting step of the dehydrogenation reaction.
Article
Energy & Fuels
Xiaobo Chen, Zhiyuan An, Yaowei Wang, Qinglu Ma, Xiang Feng, Yibin Liu, Chaohe Yang
Summary: NaOH treatment induced the formation of hollow structures and mesopores in HZSM-5 crystals without destroying the topological structure, increasing acid amount and pore volume, leading to high aromatic yields in the catalytic aromatization of methyl oleate. A HZSM-5 zeolite treated with a 0.5 M NaOH solution with high acid content and large cavity volume resulted in a high aromatic yield of 51.28 wt%.
Article
Engineering, Chemical
Isaac Yeboah, Yahao Li, Kishore Rajendran, Kumar R. Rout, De Chen
Summary: The study presented an efficient tandem catalytic system for converting bio-oil to hydrocarbons with enhanced C4+ fuel yield. The multifunctional catalytic approach has potential applications in the emerging biorefinery concept.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Qing-Yu Chang, Kai-Qi Wang, Zhi-Jun Sui, Xing-Gui Zhou, De Chen, Wei-Kang Yuan, Yi-An Zhu
Summary: The volcano-shaped activity plot limitation in propane dehydrogenation (PDH) reaction can be overcome by the introduction of Lewis acid-base interactions in single-atom-doped Ga2O3 catalysts, resulting in better catalytic performance than traditional catalysts.
Article
Chemistry, Applied
Yahao Li, Ketao Zang, Xuezhi Duan, Jun Luo, De Chen
Summary: This study reports a highly efficient method for preparing ORR electrocatalysts with a large number of atomically dispersed Fe active sites, and reveals the major contribution of atomically dispersed Fe to the ORR activity.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Physical
Xiaoli Yang, Jia Yang, Yalan Wang, Tao Zhao, Haoxi Ben, Xuning Li, Anders Holmen, Yanqiang Huang, De Chen
Summary: The Na and S-modulated FeMnOx catalysts play a crucial role in enhancing CO conversion, promoting olefin formation, and suppressing methane generation in Fischer-Tropsch synthesis of light olefins. Multiple characterizations and kinetic analysis confirmed that the promoters increase the formation of active species and lower CO activation energy. The study provides a practical strategy for developing highly active and stable FTO catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Jonas Van Belleghem, Jia Yang, Pieter Janssens, Jeroen Poissonnier, De Chen, Guy B. Marin, Joris W. Thybaut
Summary: An extended Single-Event MicroKinetic (SEMK) model successfully simulated Steady State Isotopic Transient Kinetic Analysis (SSITKA) data for Co catalyzed Fischer-Tropsch Synthesis (FTS), providing meaningful estimates for activation energies and atomic chemisorption enthalpies. The model analysis revealed the nature of two site types and the reaction preference for CO on step sites, as well as the role of terrace sites in methane production and alkane hydrogenation. The metal particle size effect was attributed to the increasing importance of terrace sites on reaction kinetics.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
Ya-Xin Yu, Jie Yang, Ka-Ke Zhu, Zhi-Jun Sui, De Chen, Yi-An Zhu, Xing-Gui Zhou
Summary: Dry methane reforming (DMR) is a promising technique that aims to convert greenhouse gases into useful chemical feedstocks. By analyzing catalytic activity trends and screening alloy catalysts, it may help address the issue of greenhouse gas conversion.
Article
Chemistry, Multidisciplinary
Xin Zhou, Minghao Zha, Jianlin Cao, Hao Yan, Xiang Feng, De Chen, Chaohe Yang
Summary: The study developed a novel ethylene glycol selective oxidation to glycolic acid process using renewable biomass energy, significantly boosting the techno-economic performance and showing superior performance in life cycle society-environment assessment.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Jie Yang, Erlend Bjorgum, Hui Chang, Ka-Ke Zhu, Zhi-Jun Sui, Xing-Gui Zhou, Anders Holmen, Yi-An Zhu, De Chen
Summary: Research has shown that the dynamic nature of active sites on La-Fe-based perovskites in chemical looping methane oxidation is influenced by the Fe coordination environment (and hence the oxygen vacancy concentration), which is the key parameter governing the catalyst selectivity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Thermodynamics
Xin Zhou, Shangfeng Li, Yuan Wang, Jiewenjing Zhang, Zhibo Zhang, Changgui Wu, Xiaobo Chen, Xiang Feng, Yibin Liu, Hui Zhao, Hao Yan, Chaohe Yang
Summary: The study introduced a novel hierarchical catalytic cracking process for crude oil, leading to increased conversion rate and olefin yields. Optimization of key operating parameters improved hydrogen and carbon atoms efficiency, net present value, and internal rate of return. Additionally, the novel process reduced greenhouse gas emissions, wastewater generation, and non-renewable energy consumption compared to conventional processes.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Materials Science, Multidisciplinary
Xiukuang Zhang, Jie Yin, Qian Lei, Xiangpeng Meng, Xiaobo Chen, Zhou Li
Summary: The study showed that high-throughput fabrication using directed energy deposition allowed for rapid production of gradient Cu-Fe-Cr alloys, with liquid diffusion and decomposition precipitation contributing to gradient variation in microstructure and composition, leading to increased hardness. Machine learning was successfully employed to predict alloy hardness, aiding in the acceleration of alloy design and fabrication.
Article
Optics
Xiao Yang, Xiaobo Chen, Juntong Xi
Summary: This work presents an efficient initial value estimation method for speckle control points matching using digital image correlation (DIC) based on perspective transformation. The proposed method achieves higher calibration accuracy compared to regular planar chessboard or circular marker array calibration targets, as well as higher measurement precision compared to the speckle pattern calibration method that uses SIFT-based initial value estimation.
Article
Chemistry, Physical
Qing Lu, Chen Chen, Qian Di, Wanli Liu, Xiaohui Sun, Yongxiao Tuo, Yan Zhou, Yuan Pan, Xiang Feng, Lina Li, De Chen, Jun Zhang
Summary: Efficient and stable electrocatalysts are crucial for the electrocatalytic CO2 reduction reaction (CO2RR) into chemical products. In this study, a NC@Ni/C nano-composite with a core-shell structure was developed as an effective electrocatalyst for CO2RR to CO over a wide potential range. The catalyst exhibited high CO Faradaic efficiency and excellent stability, primarily attributed to the pyridinic-N doping in the carbon shell of Ni NPs.
Article
Chemistry, Physical
Guangjin Wang, Xiaobo Chen
Summary: The high onset overpotential and scarce EASs of Mo-S nanoparticles can be improved by substituting S with Se and Mo with Nb.
SURFACES AND INTERFACES
(2021)
