Article
Chemistry, Physical
Zhihui Rao, Qiaoqiao Li, Zhilin Li, Liujiang Zhou, Xiujian Zhao, Xiao Gong
Summary: This study demonstrates a new contactless temperature measurement method, FIR thermometry, using all-inorganic lead-free microcrystals. The microcrystals show bright green up-conversion emission and exhibit temperature dependence in fluorescence intensity ratio. The prepared microcrystals have outstanding temperature measurement width and sensitivity, making them a potential candidate for high-sensitivity optical temperature sensors.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Guoyi Dong, Kexin Zhang, Mengrui Dong, Xiangxiang Li, Zhenyang Liu, Lei Zhang, Nian Fu, Li Guan, Xu Li, Fenghe Wang
Summary: Investigating the effect of different phases on the optical performance of thermal sensing phosphor materials is crucial. Ba(2-x)SrxMgWO6:Er3+, Yb3+, K+ double perovskite phosphors were successfully prepared using a high-temperature solid-phase method. The substitution of Sr2+ ions for Ba2+ ions led to a phase transition from cubic to tetragonal, resulting in changes in crystallographic symmetry and optical thermometric properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Optics
Shanshan Peng, Fengqin Lai, Zongliang Xiao, Hao Cheng, Zhong Jiang, Weixiong You
Summary: Ba2LaNbO6:Er3+/Yb3+ phosphor demonstrates excellent upconversion luminescence and temperature sensing behavior, serving as a potential alternative for temperature sensing applications.
JOURNAL OF LUMINESCENCE
(2022)
Article
Optics
Fadwa Ayachi, Kamel Saidi, Wajdi Chaabani, Mohamed Dammak
Summary: A series of samples including Orthovanadate phosphate pure YP0.5V0.5O4, YP0.5V0.5O4 doped Er3+, and codoped Er3+/Yb3+ were synthesized and their structural and morphological characteristics were investigated. The optimal Er3+ doping concentration was found to be 2 mol% in YP0.5V0.5O4 host. The Er3+ emissions and optical thermometric parameters were influenced by the presence of phosphate and vanadate entities in the host composition. The Er3+, Er3+/Yb3+ phosphors could potentially be used for display and temperature sensing applications.
JOURNAL OF LUMINESCENCE
(2021)
Article
Materials Science, Multidisciplinary
Ming He, Kuichao Liu, Bin Dong, Juan Cai, Hongwei Zhao, Zhihua Zhang
Summary: By studying the effect of different Yb3+ concentrations on Er3+ and Yb3+ co-doped phosphors, it was found that increasing the concentration of Yb3+ decreases the visible emission intensity of Er3+ but increases the near-infrared emission of Yb3+. Furthermore, Yb3+ can enhance the up-conversion luminescence of Er3+. The results suggest that the energy transfer between Yb3+ and Er3+ ions is reversible.
Article
Engineering, Electrical & Electronic
Shiyi Geng, Xiliang Jiang, Zhongyuan Zhang, Rujia Chen, Zidong Zhou, Xu Zhang, Huisheng Liu, Xueming Shi, Tianqing Zhang, Zhuang Leng, Chun Li, Weiling Yang, Hai Lin, Lina Liu, Shasha Li, Fanming Zeng, Zhongmin Su
Summary: Yb3+-Er3+ and Yb3+-Ho3+ co-doped Y2W3O12 phosphors were prepared and characterized. The best combination of ion doping concentration was found to be 20%Yb3+-1%Er3+ and 8%Yb3+-1%Ho3+. The emission spectra showed strong green and weak red emission for Yb3+-Er3+: Y2W3O12, and typical green and red emission for Yb3+-Ho3+: Y2W3O12, indicating an energy transfer process. These materials hold great potential for applications in up-conversion luminescence, laser, anti-counterfeiting, lighting, and other technologies.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Ceramics
Hongqiang Cui, Yongze Cao, Lei Zhang, Ying Li, Yuhang Zhang, Lei Li, Jinsu Zhang, Baojiu Chen
Summary: A series of Er3+/Yb3+ co-doped Cs3GdGe3O9 (CGG) phosphors were prepared and their microstructure and upconversion luminescence properties were studied. Abnormal phenomena were observed, including continuously increasing upconversion luminescence intensity under 980 nm laser irradiation and thermal enhancement. The phenomenon is attributed to electron releasing of host defects. CGG:Er3+/Yb3+ phosphors exhibit temperature-dependent upconversion luminescence, with a significant increase in intensity at higher temperatures. The maximum absolute sensitivity and relative sensitivity of the samples were calculated, and it was found that CGG:Er3+/Yb3+ phosphors can be used as a high-temperature optical thermometer.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Inorganic & Nuclear
Hongqiang Cui, Yongze Cao, Yuhang Zhang, Lei Li, Guojian Li, Sai Xu, Yichao Wang, Jinsu Zhang, Baojiu Chen
Summary: Er3+/Yb3+ co-doped CBSPO phosphors with significant thermal enhancement were successfully prepared, and the thermal-enhancing effect was studied in detail. The upconversion luminescence intensities of Er3+ were greatly enhanced with the increase in temperature under 980 nm laser excitation, accompanied by a change in the luminescence color. The maximum absolute temperature sensitivity of CBSPO:Er3+/Yb3+ was calculated to be 0.01026 K-1.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Ceramics
Jingyun Li, Haiyang Chen, Xi Wang, Peijiang Li, Min Lv, Haoyue Hao, Lei Meng
Summary: A simple optical fiber temperature sensing system based on up-conversion luminescence of Er3+/Yb3+ co-doped Gd2O3 phosphors is proposed and demonstrated for the first time. The system utilizes a sandwich structure sensing probe fabricated by two fiber connectors, with the fluorescent material cured with ultraviolet adhesive on the surface. The temperature measurement is achieved by analyzing the fluorescence intensity ratio (FIR) of the two green emissions generated by Gd2O3: 1 mol% Er3+, 1 mol% Yb3+ phosphors.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Qijing Zheng, Chunyan Guan, Zhenghuan Wan, Ru Fu, Jinyu Yang
Summary: Pure phase orthorhombic Er3+ and Yb3+ co-doped La14W8O45 up-conversion luminescent materials were successfully prepared by the hydrothermal method combined with calcination treatment. The samples were analyzed for their structure, morphology, and optical properties. The results showed that the obtained samples are single-phase orthorhombic crystals with a irregular and melted polyhedral-like morphology. The prepared crystals exhibited strong up-conversion emission peaks at specific wavelengths under 980 nm laser excitation.
Article
Chemistry, Physical
Tian Xie, Ruoshan Lei, Jiawen Wang, Feifei Huang, Shilong Zhao, Bingpeng Li, Shiqing Xu
Summary: A series of Er3+-doped and Er3+-Yb3+ co-doped Gd2Zr2O7 phosphors were synthesized via hydrothermal method, and their multifunctional properties were studied. The results showed that these phosphors exhibited good radiation resistance and optical characteristics, making them applicable for optical thermometry, X-ray detection, and imaging.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
David Benedicto, Juan A. Valles, Juan C. Martin
Summary: The output signal intensity distribution of several fs-laser written double-core active waveguides was studied, revealing a correlation between the ratio of cores' output powers and input pump power. A model based on coupled-mode theory was proposed to explain the phenomenon and simulations showed good agreement with experiments when allowing for small differences between cores' parameters.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Xin Yang, Yuanmin Zhu, Tao Li, Siwei Long, Biao Wang
Summary: Dual-mode optical thermometers are designed using up-conversion luminescence of Er3+/Ho3+-Yb3+ doped LaNbO4 phosphors. These phosphors exhibit reliable and excellent thermometric performance by combining fluorescence intensity ratio and decay lifetime for self-calibration. The results indicate that Er3+/Ho3+-Yb3+ doped LaNbO4 phosphors possess great potential in self-calibrated optical thermometric techniques.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Jiaxuan Hu, Xing Zhang, Haihong Zheng, Fumin Lu, Xiusha Peng, Rongfei Wei, Fangfang Hu, Hai Guo
Summary: A novel sequence of Ba3-xSrxLu4O9: Er3+/Yb3+ phosphors was successfully prepared for investigating temperature sensing property. Energy transfer and lattice environment regulation significantly improved Er3+ up-conversion luminescence. Multi-mode optical thermometry exhibited superior temperature measurement performances in wide range, signal discriminability, sensitivity, and repeatability.
CERAMICS INTERNATIONAL
(2022)
Article
Spectroscopy
Zhipeng Guan, Xiangping Li, Rensheng Shen, Zhuang Tian, Hongquan Yu, Yongze Cao, Yichao Wang, Jinsu Zhang, Sai Xu, Baojiu Chen
Summary: In this study, intense red and weak green up-conversion luminescence were achieved in BaGd2O4: Yb3+/Er3+ phosphors under the excitations of 980 nm and 1550 nm. The UC luminescence mechanisms were discussed and the energy transfer efficiency was determined. The phosphors also demonstrated potential for temperature sensing with maximum sensitivities obtained.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Multidisciplinary
The Ky Vo, Tra Phuong Trinh, Van Cuong Nguyen, Jinsoo Kim
Summary: In this study, a series of hybrid GrO/MIL-101(Cr) (GrO@MCr) nanocomposites were prepared via hydrothermal synthesis, showing increased adsorption capacities for organic pollutants MO and RB198. The adsorption mechanism was detailedly studied in this research.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Applied
The Ky Vo, Van Cuong Nguyen, Duong Tuan Quang, Bum Jun Park, Jinsoo Kim
Summary: The rapid construction of defects in metal-organic frameworks using microwave-assisted reactors can significantly impact porosity and CO2 adsorption capabilities of the material. The concentration of defects influences the amount of CO2 uptake and selectivity, surpassing those of conventionally prepared materials.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jin Hyuck Heo, Kyungmin Im, Hyong Joon Lee, Jinsoo Kim, Sang Hyuk Im
Summary: Ni,Ti-co-doped MoO2 nanoparticles were synthesized with excellent moisture stability and improved conductivity for use as hole transporting material in metal halide perovskite solar cells. The Ni,Ti-doped MoO2 showed better reduction stability and achieved a power conversion efficiency of 18.1% under standard conditions. Additionally, the unencapsulated Ni,Ti-co-doped MoO2 showed only a 12-13% degradation after a stability test, indicating promising potential for practical applications.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jeong Hee Lee, Jue-hyuk Jang, Jinsoo Kim, Sung Jong Yoo
Summary: This paper presents a novel oxygen reduction reaction (ORR) catalyst with high activity and long-term stability, which can be applied to fuel cell technologies. Through specific synthesis methods and carbonization conditions, the prepared catalyst exhibits excellent electrocatalytic performance.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Energy & Fuels
Jungyeon Ji, Kyungmin Im, Heeyeon An, Sung Jong Yoo, Yongjin Chung, Jinsoo Kim, Yongchai Kwon
Summary: Hollow cobalt nitrogen-doped carbon (H-CoNC) is proposed as an anodic catalyst for membraneless hydrogen peroxide fuel cells (HPFC) and enzymatic biofuel cells (EBC), demonstrating superior catalytic activity for hydrogen peroxide oxidation reaction (HPOR) due to its porous and hollow-shell structure, along with a large amount of isolated Co atoms and coordinate bonds with Co and nitrogen (Co-N-4). The improved mass transfer to the active site results in enhanced current density at the bioanode and higher maximum power density (MPD) for both EBC and HPFC when using H-CoNC compared to conventionally synthesized catalysts.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Van Nhieu Le, Daekeun Kim, Jinsoo Kim, Mohd Roslee Othman
Summary: Nanoporous UiO-66 spherical beads prepared using PVA binder improved the mechanical strength for toluene capture without affecting crystalline nature and micropore structures. However, the PVA binding reduced the BET surface area and total pore volume, resulting in a slight decrease in toluene adsorption efficacy by limiting toluene exposure to micropores.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Quoc Hao Nguyen, Kyungmin Im, Jinsoo Kim
Summary: In this study, hollow Fe, Co, and nitrogen co-doped carbon catalyst with high surface area and uniformly distributed Fe and Co species was prepared, demonstrating excellent ORR performance, stability, and tolerance to methanol crossover.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Toan Minh Pham, Kyungmin Im, Jinsoo Kim
Summary: This study presented a tungsten-modified titanium dioxide support for platinum catalyst, which showed improved catalytic activity and stability, offering a potential solution to the carbon corrosion issue in proton exchange membrane fuel cells.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Sion Oh, Kyungmin Im, Jinsoo Kim
Summary: Developments in fuel cell technology have led to the design of efficient electrocatalysts for the oxygen reduction reaction (ORR). Metal-nitrogen-carbon (M-N-C) catalysts, particularly carbon nanotube-encapsulated hollow Co-Fe-NC electrocatalysts, show promising catalytic activity and excellent selectivity for ORR. However, the synthesis of carbon-based metal electrocatalysts with evenly distributed active sites and well-controlled structures remains challenging.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Thuan Anh Vo, Yoonmo Koo, Jinsoo Kim, Seung-Soo Kim
Summary: This study characterized non-precious metal catalysts over activated carbon and TiO2-SiO2 supports loaded via incipient wetness impregnation and spray pyrolysis. The research found that activated carbon exhibited better performance in syringol conversion and hydrocarbon selectivity compared to TiO2-SiO2. Additionally, the Ni catalyst showed more effective hydrodeoxygenation performance compared to Fe and NiFe catalysts. The study provides a promising potential for the utilization of non-precious metals and biomass-derived activated carbon in removing oxygen from bio-oil model compounds, contributing to sustainable renewable energy development.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Hind Jihad Kadhim Shabbani, Ammar Ali Abd, Tharveen Raj Rajalingam, Jinsoo Kim, Mohd Roslee Othman, Zuchra Helwani
Summary: This study investigates the use of microporous APKS and ZIF-8 adsorbents for capturing carbon dioxide from flue gas surrogate. The lab simulated and experimented with the purity and recovery of N2 and CO2 in the product and waste stream. The results show that factors like adsorbent type, adsorption times, and CO2 concentration influence the N2 purity in the product stream, while CO2 feed compositions, adsorbent type, and pressure swing operation affect the purity and recovery of CO2 in the waste stream.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Dieu-Phuong Phan, Toan Minh Pham, Hojin Lee, My Ha Tran, Eun Duck Park, Jinsoo Kim, Eun Yeol Lee
Summary: A series of zeolite-porous metal-organic framework composites with different Pt loadings were synthesized via a two-step approach. The Pt-loaded composites showed improved acidity compared to the parent materials and demonstrated high catalytic performance and stability in the selective hydrodeoxygenation process.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Applied
Van Nhieu Le, Van Cuong Nguyen, Huu Trung Nguyen, Hoai Duc Tran, Thach N. Tu, Woo-Sik Kim, Jinsoo Kim
Summary: Bimetallic metal-organic frameworks with two different metal species demonstrate higher effectiveness in CO2 capture and separation performance than their monometallic counterparts. A series of bimetallic MIL-100(Fe, Al) was synthesized by adding Fe and Al metal precursors with various molar ratios. Among the investigated samples, MIL-100(Fe, Al)#2 showed the highest CO2 adsorption capacity of 3.27 mmol g-1 with an IAST-CO2/N2 selectivity of 76.5 at 25 degrees C and 1 bar. This facile synthetic route has the potential to enhance CO2 adsorption performance.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Energy & Fuels
Hind Jihad Kadhim Shabbani, Ammar Ali Abd, Masad Mezher Hasan, Zuchra Helwani, Jinsoo Kim, Mohd Roslee Othman
Summary: The study investigated hydrogen purification from a surrogate gas using spent coffee grounds as a medium. The process was examined under isothermal, adiabatic, and non-adiabatic conditions using Aspen adsorption software. The results showed that spent coffee grounds can effectively purify hydrogen, and a rectangular non-adiabatic plate column can enhance the purification process by improving purity and recovery responses.
GAS SCIENCE AND ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Jaehyung Choi, Kye Sang Yoo, Daekeun Kim, Jinsoo Kim, Mohd Roslee Othman
Summary: This study successfully developed microporous Mo-UiO-66 nanoparticles through a solvothermal procedure, with a requirement of 40% excess Mo content. The resulting octahedron crystals had a size of about 80 nm and a large surface area of 1158 m(2)/g.
ACS APPLIED NANO MATERIALS
(2021)