Article
Chemistry, Physical
Christian Heubner, Karsten Voigt, Christoph Laemmel, Micheal Schneider, Alexander Michaelis
Summary: Sb/Sb2O3 micro-composites can be obtained through a simple electrochemical deposition process, with patterns containing regions rich in Sb and Sb2O3 emerging under specific conditions. The formation of these patterns is proposed to be a result of complex interactions between electrochemical Sb deposition, chemical Sb2O3 precipitation, and convection patterns near the electrode. These findings contribute to a better understanding of electrochemical metal/oxide co-deposition and can aid in the design of advanced composite coatings.
APPLIED SURFACE SCIENCE
(2021)
Article
Electrochemistry
K. Voigt, C. Heubner, M. Schneider, A. Michaelis
Summary: The study investigates the formation mechanism of Sb/Sb2O3 composites using electrochemical, chemical, electron microscopy, and X-ray diffraction methods. It is experimentally verified for the first time that electrodeposition of Sb causes a local pH shift leading to the co-deposition of Sb2O3. A nucleation and growth model is proposed based on the results to explain the development of different Sb/Sb2O3 structures and compositions.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Environmental
Shigeki Yamamura, Chisato Iida, Yayoi Kobayashi, Mirai Watanabe, Seigo Amachi
Summary: Strain SVR, a dissimilatory antimonate-reducing bacterium, was isolated from soil and demonstrated the ability to reduce Sb(V) to precipitates. X-ray diffraction analysis revealed the precipitates to be Sb2O3, known as valentinite, with the bacterium able to form two different crystalline Sb2O3 structures under different pH conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Hongbin Ling, Annelies Malfliet, Zhongfu Cheng, Zhuangzhuang Liu, Bart Blanpain, Muxing Guo
Summary: In this study, the evaporation process of antimony trioxide was investigated using nitrogen gas bubbling method at high temperatures, and it was found to be a second-order reaction. Increasing the temperature and gas flow rate while decreasing the lance height enhanced the evaporation rate and antimony recovery. The evaporated product was characterized and the residual slag was analyzed to understand the limitations of antimony trioxide evaporation.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Physics, Applied
Boning Ding, Martin Frentrup, Simon M. Fairclough, Gunnar Kusch, Menno J. Kappers, David J. Wallis, Rachel A. Oliver
Summary: The study investigates the broad optical emission of zincblende GaN LED structures, attributing it to factors such as quantum well thickness and In content fluctuations, the relationship between stacking fault bunches and low-energy QW emission peaks, and the formation of wurtzite-phase inclusions. The multimicroscopy approach reveals nanoscale variations related to these factors and provides insights into the structural differences affecting the emission characteristics.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Engineering, Multidisciplinary
Xiang-hui Dai, Ke-hui Wang, Ming-rui Li, Jian Duan, Bing-wen Qian, Gang Zhou
Summary: This study investigated the penetration performance of elliptical cross-section ogive-nose projectiles (ECOPs) into concrete targets using a theoretical method. A general geometric model of ECOPs was introduced and penetration equations were derived based on the dynamic cavity-expansion theory. The model was validated by comparing predicted penetration depths with test data, and factors influencing the increment in penetration depth were examined.
DEFENCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Jihai Gu, Dongdong Lin, Yanyang Sun, Yongzhi Guo, Bing Chen, Yuming Zhang, Fengsong Liu
Summary: This study investigated the toxicity mechanisms of nano-size antimony trioxide (nATO) and soluble Sb(III) compounds on Daphnia magna. The results showed that both nATO and soluble Sb(III) induced oxidative stress, altered metabolism, and caused damage to the nervous system of D. magna, indicating their toxicity to aquatic organisms.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Materials Science, Ceramics
Yongli Wang, Chenhui Liu, Xiongjin Zhu, Zhiyu Ma, Lingbo Li, Libo Zhang
Summary: In this research, a clean and direct method for the preparation of Sb2O3 crystals and nanomaterials from antimony sulfide minerals using microwave oxidation roasting was investigated. The experimental results showed that high-purity Sb2O3 products with directional growth of Sb2O3 nanomaterials can be efficiently obtained through this method.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Hui-Yuan Zu, Xiang-Bin Han, Chang-Chun Fan, Bei-Dou Liang, Wen Zhang
Summary: Metal-halide perovskites, such as [(4AMTP)PbBr2]2PbBr4, have diverse structures and excellent optoelectronic properties. This study investigates their photoluminescence and photoelectric response behavior. The emission color can be tuned by changing the crystal size, and the material exhibits blue-light photoelectric response at a specific wavelength, proportional to the molar extinction coefficient of the absorption band edge.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Kumud Dubey, Shubha Dubey, Anchit Modi, R. K. Sharma, Sujay Chakravarty, C. Parvathiraja, N. K. Gaur
Summary: Complex BiMn2O5 nanoparticles were successfully synthesized through a novel ultrasonication assisted sol-gel synthesis route. The nanoparticles exhibited desirable properties for applications in photocatalysts and magnetic materials.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Engineering, Electrical & Electronic
Lanjuan Zhou, Qian Mi, Yingbo Jin, Tingting Li, Dongzhi Zhang
Summary: In this study, a MoO3/MoSe2 nanocomposite was successfully synthesized and demonstrated excellent gas sensing performance for TMA. The MoSe2 exhibited a flower-shaped structure, MoO3 had a rod-like structure, and the MoSe2 surface showed a honeycomb structure, with the heterostructure of MoO3/MoSe2 contributing significantly to the enhanced sensing performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Polymer Science
Hyelim Kim, Ji-Su Kim, Wonyoung Jeong
Summary: The study confirmed that antimony tetroxide (ATO(4)) can be used as an alternative flame retardant to antimony trioxide (ATO(3)), with improved mechanical and thermal properties in fibers. Additionally, the migration analysis of antimony in PANVDC fibers with ATO(4) showed elution levels below acceptable standards, meeting safety requirements.
Article
Engineering, Mechanical
Junwei Liu, Chuang Liu, Xianfeng Zhang, Pengcheng Li, Haiyang Wei, Wei Xiong, Mengting Tan
Summary: This paper conducted experiments to analyze the penetration characteristics of elliptical cross-section projectile (ECSP) into metal targets. The results showed that the penetration of ECSPs caused obvious asymmetry in the dynamic response and damage behavior of targets, and the ECSPs had larger crack length and quantity compared to circular cross-section projectiles (CCSPs). A theoretical model was also proposed to explain the asymmetric deformation and failure behavior of targets.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Engineering, Chemical
Hongbin Ling, Annelies Malfliet, Bart Blanpain, Muxing Guo
Summary: The study successfully removed arsenic from crude antimony trioxide using a nitric acid leaching method, achieving high selectivity for arsenic removal and antimony recovery. The arsenic removal ratio reached 86%, while the antimony leaching ratio was only 0.3%, with successful conversion to antimony oxide suitable for commercial production.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Civil
Chunyan Quan, Merih Kucukler
Summary: This paper investigates the structural behaviour and design of stainless steel circular hollow sections (CHS) and elliptical hollow sections (EHS) at elevated temperatures. Shell finite element models are created and validated against experimental results, generating benchmark structural performance data. Parametric studies are performed on different types of stainless steel CHS and EHS, considering various loading conditions and temperature levels. New design proposals for predicting the cross-section resistances of stainless steel CHS and EHS in fire are put forward, showing improved accuracy and safety compared to existing design provisions.
ENGINEERING STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Ya-Kun Wang, Fanglong Yuan, Yitong Dong, Jiao-Yang Li, Andrew Johnston, Bin Chen, Makhsud I. Saidaminov, Chun Zhou, Xiaopeng Zheng, Yi Hou, Koen Bertens, Hinako Ebe, Dongxin Ma, Zhengtao Deng, Shuai Yuan, Rui Chen, Laxmi Kishore Sagar, Jiakai Liu, James Fan, Peicheng Li, Xiyan Li, Yuan Gao, Man-Keung Fung, Zheng-Hong Lu, Osman M. Bakr, Liang-Sheng Liao, Edward H. Sargent
Summary: The all-inorganic nature of CsPbI3 perovskites enhances stability in perovskite devices. Inorganic ligand exchange leads to CsPbI3 QD films with superior phase stability and increased thermal transport. LEDs with KI-exchanged QD films exhibit increased thermal transport and higher operating stability compared to control devices.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Ziliang Li, Zhengtao Deng, Andrew Johnston, Jingwei Luo, Haijie Chen, Yitong Dong, Randy Sabatini, Edward H. Sargent
Summary: This study reports the synthesis of lead-free reduced-dimensional perovskite phosphors with broadband self-trapped emission and a large Stokes shift in an air ambient. White-light-emitting diodes (WLEDs) based on these phosphors show warm-white emission suited for home lighting, with high photoluminescence quantum yield and CRI.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yacong Li, Chuying Wang, Guangcai Hu, Wen Meng, Shiqi Sui, Zhengtao Deng
Summary: Manganese-doped perovskite nanocrystals were synthesized with unprecedented Mn doping efficiency of 48.5%, exhibiting bright orange emission under ultraviolet light and X-ray excitation, and a high photoluminescence quantum yield of 84.4%, making them excellent luminescent materials.
CHEMICAL COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Chuying Wang, Ya-Kun Wang, Ziliang Li, Jingwei Luo, Randy Sabatini, Tao Zhang, Edward H. Sargent, Zhengtao Deng
Summary: This study reports on perovskite white light-emitting diodes (WLEDs) that do not have the issue of anion migration. By developing green-emitting single-layer sheets and combining them with red-emitting perovskite quantum dots, the researchers successfully solved the problem and demonstrated WLEDs with high potential for applications.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Wen Meng, Chuying Wang, Yacong Li, Guangcai Hu, Shiqi Sui, Guangyong Xu, Min Peng, Zhengtao Deng
Summary: This research reports a facile solid-state chemical method for synthesizing a single-component phosphor with broad-band emission and a large Stokes shift to meet the requirements of future white-light sources. The newly developed tetrabutylammonium copper halides phosphors exhibit excellent warm white emission with peaks at 494 and 654 nm. The optimized photoluminescence quantum yield can reach 93.7%. The fabricated WLED shows a typical CIE coordinate of (0.3620, 0.3731) with a CRI of 89 and low CCT of 4516 K.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Ping Gao, Suwen Cheng, Jiaxin Liu, Junjie Li, Yanyan Guo, Zhengtao Deng, Tianshi Qin, Aifei Wang
Summary: Lead-free all-inorganic halide materials with different Mn2+-based crystal structures were synthesized, showing different luminescent properties. White light emission could be achieved by tuning the synthetic conditions. The fabricated white-light-emitting diodes exhibited good optoelectronic performance.
Article
Chemistry, Multidisciplinary
Chuying Wang, Wen Meng, Yacong Li, Guangyong Xu, Min Peng, Shuming Nie, Zhengtao Deng
Summary: In this study, a novel colloidal synthesis route was reported using lauryl methacrylate (LMA) as the reaction solvent to improve the solubility of precursors, resulting in small-sized alpha-CsPbI3 QDs with a diameter of only 4.2 nm. These QDs exhibited a tunable photoluminescence emission peak in the bright pure red region of 627 to 638 nm. This research provides a high-performance pure red fluorescent material with a robust, low-cost, and reproducible colloidal chemistry for the adoption of perovskite QDs in display backlight application.
Article
Chemistry, Multidisciplinary
Min Peng, Shibin Sun, Bin Xu, Zhengtao Deng
Summary: Currently, the most popular method to manufacture white light-emitting diodes (WLEDs) involves using blue-emitting InGaN LED chips and yellow-emitting phosphor coating to produce white light. However, conventional white WLEDs lack a uniformly distributed continuous emission spectrum like natural sunlight. A novel strategy is introduced here using polymer encapsulated perovskite nanocrystals (PNCs) composite films as cyan color converters to address the issues of blue overshoot and cyan gap. This study demonstrates the potential application of PNC color converters in the next generation full-visible-spectrum WLED lighting that imitates natural daylight.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Yacong Li, Chuying Wang, Guangyong Xu, Guigen Luo, Zhengtao Deng
Summary: A facile and general synthetic procedure was introduced to prepare undoped and heterometallic doped CsMnBr3 NCs at room temperature. By doping a small amount of Pb2+ (4.9%), both photoluminescence (PL) and absorption of CsMnBr3 NCs were significantly improved. The absolute PL quantum yield of Pb-doped CsMnBr3 NCs is up to 41.5%, 11-fold higher than undoped CsMnBr3 NCs (3.7%). The PL enhancement is attributed to the synergistic effects between [MnBr6](4-) units and [PbBr6](4-) units.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Guangyong Xu, Chuying Wang, Yacong Li, Wen Meng, Guigen Luo, Min Peng, Bin Xu, Zhengtao Deng
Summary: A series of lead-free CsMnX3 (X = Cl, Br, and I) nanocrystals embedded in glasses were synthesized and found to remain stable after soaking in water for 90 days. Increasing the amount of cesium carbonate during synthesis not only prevents oxidation of Mn2+ and improves glass transparency, but also significantly increases the photoluminescence quantum yield from 2.9% to 65.1%. These lead-free nanocrystals were used as a red light source to create a white light-emitting diode with high color rendering index and stable performance.
Article
Chemistry, Multidisciplinary
Zhengtao Deng, Allen Y. Y. Chen, Bijan Zakeri, Chao Zhong, Timothy K. K. Lu
Summary: The complexity and functionality of biofilm-based scaffolds assembled through metal-peptide coordination chemistries are limited. In this study, a platform for the multiplexed and specific coupling of recombinant protein-functionalized fluorescent red-green-blue quantum dots (RGB QDs) with engineered biofilms to form Jabuticaba-like nanostructures is presented. Full-color living Jabuticaba-like nanostructures have been achieved through the interaction of extracellular peptides fabricated by biofilms with proteins modifying the surface of RGB QDs.
MATERIALS HORIZONS
(2023)
Article
Materials Science, Multidisciplinary
Shiqi Sui, Chuying Wang, Guangcai Hu, Yacong Li, Wen Meng, Jingwei Luo, Guangyong Xu, Zhengtao Deng
Summary: Researchers report a new class of lead-free antimony halides with tunable photoluminescence emission and high quantum yield. These materials exhibit broadband emission and long lifetime, and demonstrate high luminous efficiency and long-term stability in LED applications. The emission spectra of white LEDs can be adjusted by optimizing the mixture with blue phosphors.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Liu Yao, Deng Zhengtao
Summary: This study synthesized a series of novel two-dimensional tin-halide perovskite materials with excellent fluorescence properties, laying a foundation for replacing toxic lead halide perovskite materials.
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
(2021)
Article
Chemistry, Multidisciplinary
Feng Gao, Jianghua Wu, Yilin Zhao, Tinglu Song, Zhengtao Deng, Peng Wang, Yonggang Wang, Hongbo Li
Summary: A general route to passivate perovskite nanocrystals by insulating metal sulfate shells was successfully developed by initiating the reaction between organic ammonium sulfate and various metal ions. This method allows for the creation of insulating metal sulfate shells with controllable thicknesses without undesirable chemical transformations, leading to novel core/shell-structured nanocrystals with photoluminescence quantum yields near unity.
Article
Chemistry, Multidisciplinary
Shiqi Sui, Jian Zhou, Aifei Wang, Guangcai Hu, Wen Meng, Chuying Wang, Yao Liu, Jiajing Wu, Zhengtao Deng
Summary: In this study, a 2D phenethylammonium tin-lead bromide perovskite was successfully synthesized using a simple solution-phase approach, allowing for control of bandgap behavior by tuning the ratio of tin and lead. Density functional theory calculations revealed the key effects of spin-orbital coupling, and a standard equation with a correction term was provided to introduce the influence of SOC. These findings advance bandgap engineering of perovskites and expand the application of 2D perovskite materials.
NANOSCALE ADVANCES
(2021)