JOURNAL OF NANOPARTICLE RESEARCH
·
2025
·Vol. 27
·期 2
·1-15
·
IF 2.6
Hui Xianghe,Fang Dong,Wang Guifang,Ran Feng,Zhang Xin,Fu Zewei,Ruzimuradov Olim
Perovskite hydroxystannate (MSn(OH) 6 ) has garnered considerable interest in recent years as a novel flame retardant characterized by its low toxicity and environmentally benign properties. In order to improve the flame retardancy and smoke suppression properties of epoxy resin (EP) matrices, transition metal hydroxystannate (MSn(OH) 6 , M = Fe, Co, Mn) was prepared by a ultrasonic-coprecipitation method and used as flame retardants. The synthesized composites were assessed for their flame retardant characteristics and mechanical properties through the measurement of the limiting oxygen index (LOI), the cone calorimetry test (CCT), and universal tensile testing. Upon the incorporation of 10 wt% of the MSn(OH) 6 flame retardants, the flame retardant of EP composites exhibited marked enhancement, especially manganese hydroxystannate (MHS). Compared with pure EP, the EP/MHS-10 composite demonstrated the best performance, reducing the peak of heat release rate (pHRR), total heat release (THR), total smoke production (TSP) by 60.0%, 14.4%, and 32.6%, respectively. During the process of combustion, the decomposition of MSn(OH) 6 results in the generation of non-flammable gases and water vapor. In the condensed phase, tin (Sn) and transition metals contribute to the formation of a more protective char residue. The residue serves as a physical barrier, effectively isolating the underlying epoxy (EP) matrix material from heat and oxygen.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nanoscience and Nanotechnology Letters
·
2015
·Vol. 7
·期 5
·398-401
·
IF 1.431
Wang Shanshan,Zhang Jun,Peng Feng,Shao Lexi
Micron-sized Cu2FeSnS4 single crystals were synthesized by molten salt method using CuS, FeS and SnS as raw materials and using CsCl as fluxing agent for the first time. The Cu2FeSnS4 single crystals were investigated by X-ray diffraction,
Raman, X-ray photoelectron spectroscopy and UV-vis absorbance spectroscopy. The results showed that the Cu2FeSnS4 single crystals were having stannite structure with an average size about 50–100 μm and the band gap was about 1.45 eV.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2024
·
IF 8
Qiaoling Chen,Litian Lin,Chang Ji,Chang-Kui Duan
The unintentional incorporation of various unknown trace amounts of impurities poses challenges and controversies in identifying luminescent mechanisms of certain systems. A common approach to confirm or exclude the involvement of a certain activation center is to monitor the changes in luminescence by intentionally doping the inferred species into the crystal. Here, an intriguing luminescent phenomenon resulting from the hidden interplay between the dopants and trace impurities, is presented. In alkaline-earth stannate perovskites, near-infrared luminescence is observed. By combining density-functional calculations with the well-designed doping and codoping experimental strategies, the mechanisms behind this anomaly is successfully uncovered. It originates from the stabilization of Cr 3 + by codopants such as Bi and rare-earth (RE) ions, acting as electron donors. The luminescence is almost unobservable when chromium is doped alone, and thus the traditional identification method does't work. This work emphasizes the important role of trace impurity in materials, especially the subtle change of valence state of trace impurity upon doping, which provides enlightening insights and prompts reassessments of numerous reported anomalous luminescent phenomena.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2024
·Vol. 11
·期 17
·5648-5656
·
IF 6.1
Yuhan Hu,Xi Xu,Ruixi Wang,Jingyun Han,Shunsong Zhang,Shuhui Zhan,Jingyu Guo,Li-Ming Wu,Ling Chen
Tin(II)-containing phosphates are promising candidates for designing and studying materials with enhanced birefringence. Herein, we present a novel compound [Sn3OF]PO4 that exhibits significant birefringence (Δnobv. = 0.117 at 546 nm), a five-fold improvement compared to that of the related compound [Sn3F3]PO4 discovered nearly 40 years ago. The remarkable enhancement in birefringence is primarily attributed to the anisotropic [SnO3F]5− structure building unit. By simple regulation of the F/O ratio, the undesirable R3 symmetry in [Sn3F3]PO4 is disrupted. This regulation also realigns the lone pairs, resulting in substantial optical anisotropy.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2023
·Vol. 148
·期 22
·12467-12479
·
IF 4.4
Pan Weihao,Zhou Qiankun,Yang Wenjie,Nie Shibin,Xu Liangji,Wei Chunxiang,Lu Hongdian,Yang Wei,Yuen Anthony Chun Yin
Acrylonitrile–butadiene–styrene (ABS) composites with less smoke and toxicity hazards (e.g., HCN and NO x ) emission are highly demanded. As a common smoke suppressant, zinc hydroxystannate (ZHS) has been used in various polymers, while the high content, special cube shape and agglomeration restrict its development. To solve these problems, MXene (Ti 3 C 2 T x ) nanosheets were utilized to wrap ZHS nanoparticles (Ti 3 C 2 T x -PDA-ZHS) to improve the dispersion and compatibility of ZHS nanoparticles in ABS, in which polydopamine (PDA) was used as a binder to combine ZHS and MXene nanosheets. Accordingly, the prepared ABS/Ti 3 C 2 T x -PDA-ZHS nanocomposites showed the enhanced properties: (1) ABS/Ti 3 C 2 T x -PDA-ZHS exhibited a 69.7% increase in elongation at break compared to ABS/ZHS at a 2 mass% loading. (2) Owing to the synergistic effect of MXene and ZHS, Ti 3 C 2 T x -PDA-ZHS provided excellent inhibition on heat and toxic gas release during combustion (a reduction of approximately 17.5%, 34.5%, 19.1% and 20.0% of peak heat release rate, HCN, NO and NO 2 , respectively). (3) The smoke density decreased from 525.6 for neat ABS to 423.2 for ABS/Ti 3 C 2 T x -PDA-ZHS with a reduction of 19.5%, and the light transmittance of ABS/Ti 3 C 2 T x -PDA-ZHS (37.7%) was much higher than that of pure ABS (21.2%) at 240 s. Therefore, Ti 3 C 2 T x -PDA-ZHS showed a great enhancement in flammability, toxicity and smoke release reduction of ABS, potentially overcoming the weakness with improved diversity in future applications. Graphical abstract
研究领域:
材料科学
·
燃烧化学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Jie Song,Zhiwen Yuan,Lijun Chen,Yuhua Niu,Zhiqiang Wei
For the effective removal of phenol from the environment, photocatalytic synergistic adsorption is currently one of the key methods. By leveraging the polysaccharide backbone structure of sodium alginate (SA), Zinc hydroxystannate (ZHS) was introduced into the gel structure using a co-precipitation technique. Additionally, gangue waste was repurposed through a polymerization reaction. This approach not only enhanced the specific surface area of the gel material but also compensated for its limited absorption in the visible light spectrum. As a result, the PKSPGM@ZHS was successfully synthesized. The adsorption of Ph by PKSPGM@ZHS in the dark reaction phase aligns with the quasi-second-order kinetic model and the Langmuir model, it shows that this is a spontaneous exothermic process, and its photocatalytic process conforms to the Langmuir-Hinshelwood first-order reaction kinetics model, where ZHS undergoes a series of reactions to generate ·OH radicals from ·O 2 − in the presence of photocatalysis. Ph can be degraded to CO 2 and H 2 O through a series of reactions, thereby achieving complete removal of Ph from wastewater solutions, with a removal rate reaching up to 70 %. After 5 cycles of adsorption/photocatalysis tests, KSPGM@ZHS still h exhibits a high removal efficiency, with the removal rate remaining at 54.26%. This demonstrates its excellent recyclability.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xin Zhang,Yiwen Wang,Orest M. Ivasishin,Jiaqi Zhang,Long Yuan
Inorganic thermochromic materials exhibit a tunable color gamut and a wide chromatic temperature range, indicating their potential for intelligent adaptive applications in thermal warning, temperature indication, thermal regulation, and interactive light-to-thermal energy conversion. However, most metal-oxide-based thermochromic materials show weak chromaticity adaption with the change of temperature, which needs further understanding of the microscopic principle to clarify the potential route to improve the contrast and identifiability for fabricating better thermochromic materials. Using perovskite-structure (AMO3) alkaline earth metal stannate (Ba1–xSrxSnO3, 0.0 ≤ x ≤ 1.0) as a model system, this paper reports for the first time the mechanism of the properties of thermally induced defect-enhanced charge transfer-type (CTT) thermochromic materials and the strategy for regulating their thermochromic properties by A-site cations. BaSnO3 exhibits continuously reversible thermochromic properties with high contrast from weak light yellow (b* = 11) to strong bright yellow (b* = 58) between room temperature and 550 °C. In-situ high-temperature X-ray diffraction (in-situ XRD), in-situ UV–vis absorption spectroscopy (in-situ UV–vis), thermogravimetric (TG), and electron paramagnetic resonance (EPR) spectra indicate that this excellent thermochromic phenomenon is attributed to the weakening of Sn–O bond hybridization at high temperatures, as well as the formation of a large number of oxygen vacancies at the top of the valence band, and the enhanced charge transfer resulting from the generation of impurity levels in the Sn2+ 5s2 intermediate. Replacing Ba2+ by Sr2+ in Ba1–xSrxSnO3 successfully tuned the thermochromic properties, which is attributed to the Sr2+ doping level-directed oxygen defect concentration and deoxygenation rate. The demonstrated defect-enhanced charge transfer behavior promotes a feasible route for lattice oxygen-mediated thermochromic materials and provides a fundamental relationship between thermally induced defects and colorimetry.
研究领域:
材料科学
·
无机化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Yehuan Ji,Mengyao Xia,Haobo Wang,Weifeng Yao
Piezocatalysis is a promising technology that convert mechanical energy into chemical energy, offering sustainable solutions for environmental remediation. However, its development has been constrained by the assumption that effective piezocatalysis requires non-centrosymmetric materials. Herein, we demonstrate for the first time that zinc hydroxystannate (ZHS), a centrosymmetric material, exhibits efficient piezocatalytic activity for tetracycline (TC) degradation. Using a room-temperature self-template synthesis method, ZHS nanoparticles achieved a maximum TC degradation efficiency of 80 % within 180 min, comparable to classical piezoelectric material BaTiO 3 (BTO) under identical conditions. The ZHS-20 catalyst, optimized by NaOH concentration, also demonstrated excellent recyclability across multiple cycles. Comprehensive characterizations, including piezoelectric response force microscopy (PFM), second harmonic generation (SHG), and electron paramagnetic resonance (EPR) spectroscopy, revealed that oxygen vacancies are critical for piezocatalytic performance. Catalyst morphology and size were identified as key determinants of activity, surpassing the influence of surface area or oxygen vacancy concentration alone. Notably, while moderate oxygen vacancy concentrations improve carrier dynamics, excessive vacancies can act as charge traps, hindering the catalytic process. This study expands the scope of piezocatalytic materials to include centrosymmetric structures and provides insights into defect engineering, offering a scalable and sustainable strategy for environmental pollutant remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
LUMINESCENCE
·
2024
·Vol. 39
·期 5
·e4754
·
IF 3.2
Hongbin An,Haonan Ju,Zhiliang Ren,Hang Yang,Xinru Huang,Dong Tu
Near-infrared mechanoluminescence is a phenomenon that produces high penetrating near-infrared light under external stimulation. Near-infrared light coincides with the biological window, lower optical loss, and the fact that the mechanoluminescence material is a medium that converts mechanical energy into light energy. The near-infrared mechanoluminescence material has potential application prospects in the fields of biological imaging, medical diagnosis, and monitoring of building materials. In this article, we report on a perovskite-type Sr 3 Sn 2 O 7 :Nd 3+ near-infrared mechanoluminescence material, and its peaks locate in the first near-infrared window (800–1000 nm) and the second near-infrared window (1080, 1350 nm), respectively. Under the condition of pre-sintering with Li 2 CO 3 as flux, the best sintering conditions are obtained, and the luminescence of material is in perfect agreement with the applied mechanical stress. In addition, a near-infrared mechanoluminescence sensor is proposed to solve the problem of building damage and timely maintenance.
研究领域:
材料科学
·
生物医学工程
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Fei Zhong,Chunlin Chen,Xulin Yang,Jian Zhou,Wanying Zheng,Hui Huang,Pengshuo Wang,Wanying Li
Herein, polyethyleneimine (PEI) was loaded on the surface of BN nanosheets to impart them a positive charge. Then, negatively charged zinc hydroxystannate (ZHS) nanoparticles were adsorbed on the surface of BN/PEI composites through electrostatic self-assembly to obtain a novel BN/PEI@ZHS nanoadditive (BP@ZHS). The contribution of BP@ZHS hybrids to the flame retardant properties of epoxy coatings (EP) was characterized by fire performance tests. The thermal insulation performance test results showed that the backside temperature of the BP@ZHS based epoxy (BP@ZHS/EP) fireproof coating remained the lowest value (172.1 ℃) after 60 min of burning. The BP@ZHS/EP sample exhibited the most excellent expansion characteristics (expansion height is 21.5 mm, expansion rate is 16.54) after calcination in a muffle furnace. The TGA experiments illustrated that BP@ZHS/EP had the largest amount (30.8%) of carbon residue due to its catalytic carbonization . Moreover, the smoke density rating (SDR, 46.8%) of BP@ZHS/EP was significantly lower than other samples due to the synergistic effect of BN and ZHS. The carbon residue analysis showed that zinc stannate and BN remained in the carbon framework, thereby improving the strength and thermal insulation effect of the char layer. The excellent fire resistance of BP@ZHS/EP can be mainly attributed to the high barrier effect of BN nanosheets and the multifunctional flame retardant effect of ZHS.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Anish Bhattacharya,Xiangfeng Chu,Qi Gao,Xue Li,Yongping Dong,Shiming Liang,Amit K. Chakraborty
Ethanol sensing is an important area of research given its relevance to human health, traffic control and various industries. Metal oxide semiconductor nanostructures are most commonly used as gas sensors. In this study, enhanced ethanol sensing properties were obtained by incorporation of Gd 3+ ions into Barium Stannate (GBSO), a bimetallic oxide microrods prepared through a simple co-precipitation method. The GBSO films, when exposed to ethanol, showed that incorporation of Gd improved the sensing response till 3 wt% of Gd (3GBSO) loading while further increase in Gd content resulted in reduced response. 3GBSO sample showed response as high as 76 to 500 ppm of ethanol vapor at an operating temperature of 220 °C along with a very low detection limit of 0.1 ppm (response of 1.5). Good repeatability and moderate stability were also observed suggesting its potential as low-cost ethanol sensor. Significant increase in both specific surface area as well as oxygen content (as measured by x-ray photoelectron spectroscopy) was observed in 3GBSO sample compared to that of BSO. Thus, we showed that incorporation of Gd improved the surface area of BSO microrods and in turn the surface adsorption of oxygen which led to their enhanced response to ethanol.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Jingyi Lu,Bibo Wang,Pengfei Jia,Wenhua Cheng,Can Liao,Zhoumei Xu,Liang Cheng,Yuan Hu
Epoxy resin (EP) is widely used in the package of modern electronic products for thermal management, but the extremely flammability and toxicity release have restricted its further application. In this article, zinc hydroxystannate (ZHS) nanocubes were in-situ fabricated on the surface of titanium carbide (Ti 3 C 2 T x ) MXene nanosheets (ZHS@M) for improving the thermal management capacity of EP. Due to the phonon thermal conductance from ZHS and electron-hole thermal conductance of Ti 3 C 2 T x , the thermal conductivity was improved by 328% compared with the neat EP, which was benefit to dissipate heat for reducing the possibility of thermal disaster chain happening. Furthermore, owing to the 0D-2D hierarchical structure of ZHS@M, the fire safety and smoke suppression of these EP composites were highly strengthened. The peak heat release rate (pHRR) and total heat release (THR) decreased by 54.91% and 58.74%, respectively. Moreover, hazardous gases of EP during the combustion were also efficiently reduced, and the generation of carbon oxide (CO) and carbon dioxide (CO 2 ) were decreased by 44.44% and 39.46% when the additive of ZHS@M was only 2 wt%. As a result, ternary catalytic effect and labyrinth structure improved the safety of EP in the thermal runaway incidents. Besides, EP-2.0 ZHS@M exhibited excellent tensile robustness (64.71 MPa) and modulus (2.39 GPa), which regarded as a reliable supporting material for electronics in thermal management field. Hence, this hierarchical EP-ZHS@M composites provided the help of cleaning the thermal accumulation and increasing fire safety while facing thermal runaway, which was significant to destroy the formation of thermal disaster chain and further applications of the modern electrons and devices.
研究领域:
材料科学
·
热工程学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）