Nature Communications
·
2022
·Vol. 13
·期 1
·1-9
·
IF 17.694
Feng Xuezhen,Zheng Renji,Gao Caiyan,Wei Wenfei,Peng Jiangguli,Wang Ranhao,Yang Songhe,Zou Wensong,Wu Xiaoyong,Ji Yongfei,Chen Hong
Ultrathin two-dimensional (2D) metal oxyhalides exhibit outstanding photocatalytic properties with unique electronic and interfacial structures. Compared with monometallic oxyhalides, bimetallic oxyhalides are less explored. In this work, we have developed a novel top-down wet-chemistry desalination approach to remove the alkali-halide salt layer within the complicated precursor bulk structural matrix Pb 0.6 Bi 1.4 Cs 0.6 O 2 Cl 2 , and successfully fabricate a new 2D ultrathin bimetallic oxyhalide Pb 0.6 Bi 1.4 O 2 Cl 1.4 . The unlocked larger surface area, rich bimetallic active sites, and faster carrier dynamics within Pb 0.6 Bi 1.4 O 2 Cl 1.4 layers significantly enhance the photocatalytic efficiency for atmospheric CO 2 reduction. It outperforms the corresponding parental matrix phase and other state-of-the-art bismuth-based monometallic oxyhalides photocatalysts. This work reports a top-down desalination strategy to engineering ultrathin bimetallic 2D material for photocatalytic atmospheric CO 2 reduction, which sheds light on further constructing other ultrathin 2D catalysts for environmental and energy applications from similar complicate structure matrixes.
研究领域:
材料科学
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环境科学
·
化学
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能源科学
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DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2023
·Vol. 26
·期 4
·557-565
·
IF 3.1
Jiaqiang Ding,Bingyu Xiao,Jinqiu Wu,Dongliang Chen,Dongling Huang,Zuochun Xiong
Poly(ε-caprolactone-co-trimethylene carbonate) (PCLTMC) is a biodegradable copolymer, which is widely used for medicine and tissue repair systems, and its morphology, degradation and mechanical properties have been extensively investigated. However, its crystallization behavior with different copolymerization ratios has not been studied systematically, which is of great significance for the study of property regulation and an understanding of the crystallization behavior of random copolymers. In this paper, the relationship between the crystallization temperature Tc, melting point temperature Tm and crystallinity Xc of copolymers with different molar ratios was determined by differential scanning calorimetry (DSC) using a non-isothermal crystallization method. The results show that the melting point and crystallinity of the copolymer decrease with an increase in TMC composition. The equilibrium melting point of the copolymers was predicted by an isothermal crystallization method, using the Hoffman–Weeks extrapolation method and crystallization rate growth fitting method both based on Lauritzen–Hoffman theory. It is proved that Lauritzen–Hoffman theory is of great significance for guiding the kinetic behavior of PCLTMC crystallization.
研究领域:
材料科学
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生物医学工程
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2024
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IF 11.2
Xiaotu Yang,Zihao Yue,Ruixiang Deng,Zhengliang Zhang,Tao Zhang,Lixin Song
Stability hinders further development of all-inorganic CsPb X 3 ( X = Cl, Br, I) quantum dots (QDs) although they exhibit promising prospects in optoelectronic applications. Coating perovskite quantum dots (PQDs) with a glass network to form QD glass can significantly improve their stability. However, the dense glass network degrades their luminescent performance. In this work, the crystallization behavior of PQDs in glass and better luminescence properties are prompted by introducing titanium dioxide into borosilicate glass. The luminescence intensity of TiO 2 -doped CsPbBr 3 QD glass is increased by 1.6 times and the PLQY is increased from 49.8 % to 79 % compared to the undoped glass. Evidence proves that the improved properties are attributed to the enhanced nucleation effect of titanium dioxide during the annealing process. Benefiting from the densification of the glass network caused by titanium dioxide doping, the stability of the PQD glass is further improved. LED devices with an ultra-wide color gamut that fully covers the NTSC1953 standard and achieves 128.6 % of the NTSC1953 standard as well as 91.1 % of the Rec.2020 standard were fabricated by coupling PQD glass powder, demonstrating promising commercial applications of PQD glass in optoelectronic displays.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
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2024
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IF 6.1
Feng Xu,Xiang Xu,Bingxuan Li,Ge Zhang,Chan Zheng,Jindong Chen,Ning Ye
Long-wave infrared (IR) nonlinear optical (NLO) crystals hold great promise for extensive applications. However, IR NLO crystals with outstanding comprehensive optical and NLO performances are still in great demand. Herein, two Hg-based chalcogenides, Hg3AsS4Cl and Hg3AsS4Br, are synthesized via a chemical vapor transport technique. Attributed to the synergistic combination of [HgS3] groups and structurally aligned [AsS3] groups with lone pair electrons, the two compounds exhibit superior NLO performance, encompassing strong second-harmonic generation (SHG) effects, tremendous birefringence, and a broad transparency range, positioning them as promising long-wave IR NLO materials. Moreover, the luminescent performances of the two compounds are also investigated, revealing interesting ultraviolet (UV) region luminescence emissions, broad emission bands, and large Stokes shifts for potential luminescent applications.
研究领域:
材料科学
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光学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2025
·Vol. 36
·期 36
·2307
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IF 2.8
Zhang Huayushuo,Ma Qian,Gao Pan,Li Bolong,Yang Xiaoxia,Li Chao,Song Mingming,Hou Zhiwei,Jiang Xiaomei
X-ray detection has extensive applications in medical imaging, scientific research, and security inspection. Despite the superior radiation detection properties of lead-based perovskites, including high carrier mobility and superior attenuation efficiency, their toxicity and instability arising from ion migration hinders further development. To address these challenges, a series of halogen-tuned lead-free 3-methylpiperidine bismuth halides, (C 6 H 14 N) 3 Bi 2 I 9 , (C 6 H 14 N) 2 BiBr 5 and (C 6 H 14 N) 2 BiCl 5 (C 6 H 14 N = 3-methylpiperidine) single crystals were grown and systematically characterized. 3-methylpiperidine was selected for its steric effect stabilizing the lattice, and the synergistic tuning through halogen variation enabled a structural transition along with modulation of their properties. Notably, the lateral-structured (C 6 H 14 N) 3 Bi 2 I 9 single-crystal X-ray detector exhibits a sensitivity of 388.05 μC Gy −1 cm −2 , a low detection limit of 71.05 nGy s −1 , and a small dark current drift of 2.16 × 10 –8 nA cm −1 s −1 V −1 . Importantly, this material retains its original morphology after 8 months of storage in ambient conditions. Furthermore, flexible X-ray devices fabricated via spin-coating (C 6 H 14 N) 3 Bi 2 I 9 exhibited a favorable X-ray response with a sensitivity of 121.48 μC Gy −1 cm −2 , as well as excellent mechanical stability. This work reveals that halogen tuning effectively optimizes the structure and performance of Bi-based perovskites, providing valuable insights for advancing them in X-ray detection applications.
研究领域:
材料科学
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辐射探测
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钙钛矿电子学
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半导体器件
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柔性电子学
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产品关联
DOI
高影响因子
Advanced Optical Materials
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2025
·
IF 7.2
Lin Shi,Junchun Li,Zengce Liu,Ping Chen,Yang Jiang
Rare-earth metal halides have emerged as a compelling class of luminescent materials, offering an environmentally benign alternative to toxic lead-based halides. This work reports the successful synthesis of Cs 3 CeX 6 (X = Cl, Br, I) with tunable emission and excellent photoluminescence quantum yield (PLQY) of Cs 3 CeCl 6 . Through controlled halogen substitution in the Cs 3 CeX 6 (X = Cl, Br, I) system, composition-dependent emission redshift (Cl→Br→I) is observed. Among them, Cs 3 CeCl 6 achieves a photoluminescence quantum yield (PLQY) of 99.89%, significantly surpassing the 92.57% PLQY of Cs 3 CeBr 6 and the 7.53% PLQY of Cs 3 CeI 6 , meanwhile surpassing that of most previously reported lead-free metal halides, highlighting its exceptional potential for efficient luminescent applications. Thermal stability analysis reveals that Cs 3 CeCl 6 maintains remarkable emission efficiency at elevated temperatures, retaining > 85% of its room-temperature luminescence intensity at 438 K, compared to only 60% for Cs 3 CeBr 6 and a mere 10% for Cs 3 CeI 6 . The exceptional thermal robustness originates from their characteristically high activation energies for thermal quenching, which effectively suppress non-radiative relaxation pathways. White light-emitting diodes (LEDs) based on Cs 3 CeI 6 exhibit a remarkable color rendering index (R a ) of 95.1, in contrast to those based on Cs 3 CeCl 6 (R a = 77.6) and Cs 3 CeBr 6 (R a = 79.6); all WLEDs based on Cs 3 CeX 6 (X = Cl, Br, I) demonstrate excellent atmospheric stability. With near-unity PLQY and remarkable thermal stability of Cs 3 CeCl 6 , coupled with the outstanding white LEDs performance of Cs 3 CeI 6 , Cs 3 CeX 6 (X = Cl, Br, I) compounds emerge as promising candidates for next-generation environmentally friendly optoelectronic applications, particularly in advanced display technologies and solid-state lighting systems. This work contributes to the advancement of eco-friendly emitters with both high efficiency and practical utility in next-generation optical technologies.
研究领域:
材料科学
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光电子学
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发光材料
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固态照明
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显示技术
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产品关联
DOI
高影响因子
Carbon Neutrality
·
2025
·Vol. 4
·期 1
·1-9
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IF 12.5
Yang Delong,Dai Jinhang,Du Ziting,Cao Qingya,Chen Gang,Qi Ting,Wang Weilu,Li Fukun
Since 3-acetylamino-5-acetylfuran (3A5AF) has been regarded as a promising nitrogen-containing synthon, the conversion of renewable chitin and its monomer N-acetyl-D-glucosamine (NAG) to 3A5AF is of significance. In this paper, we compared the catalytic activity of several Cl-containing compounds and found that LiCl exhibited superior performance. The effects of solvent, catalyst dosage, reaction temperature, and reaction time on the synthesis of 3A5AF were investigated. Under the optimized conditions, about 60% yields of 3A5AF were obtained in N-methyl-2-pyrrolidone (NMP) or dimethylacetamide (DMA) medium. The spent LiCl and DMA could be recycled and reused, without obvious decrease of 3A5AF yield. Moreover, the formed 3A5AF could be purified by a facile procedure. Experiment results and density functional theory (DFT) calculations revealed that homogeneous Cl − was vital for 3A5AF formation. This study provides an example for the effective conversion of chitin biomass to value-added compounds.
研究领域:
有机化学
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催化化学
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可再生资源利用
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理论计算化学
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产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2021
·
IF 2.328
Ziyu Pan,Bin Liu,Bo Wang,Yingchao Liu,Tingyu Si,Wencai Yi,Yangqing Wu,Jinkai Li,Bingqiang Cao
Lead-free double-perovskite Cs 2 SnX 6 (X = Cl, Br, I) containing Sn 4+ is a more stable lead-free photovoltaic material than its homologue CsSnX 3 . However, its stability in air still affects its application. In this Letter, lead-free inorganic Cs 2 SnX 6 (X = Cl, Br, I) nanocrystals (NCs) were synthesized by a hot injection method and in-situ loaded into mesoporous SiO 2 . With the change of halogen content, the PL emission peak of pristine Cs 2 SnX 6 NCs were tuned from 430 nm to 780 nm covering the visible and near infrared spectrum region. Taking Cs 2 SnI 6 /SiO 2 NCs as an example, the optical property stability in solution is obviously improved, and it can be stored in air for over 2 h. Especially, the more stable NIR emission, non-toxicity and easy hydrolysis characteristics of Cs 2 SnX 6 /SiO 2 composite nanoparticles will have potential medical applications like photothermal and photodynamic therapies for cancers.
研究领域:
材料科学
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医学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Yubing Cao,Ruitong Gao,Junwei Lei,Yuandong Hou,Min Xu,Shuang Cao,Zhaojun Chen,Yajing Duan,Hui Du
Pyrolysis presents a promising pathway for the chemical recycling of waste plastics. However, the pyrolysis of chlorine-containing plastics can generate hazardous chlorinated compounds. Therefore, it is critical to investigate the migration, transformation, and removal of chlorine during pyrolysis to enable environmentally sustainable recycling. In this study, we combined kinetic analysis with in-situ FTIR and TG-FTIR-MS to elucidate the mechanisms of chlorine migration and transformation during the pyrolysis of chlorinated mixed plastics (CMPs). An efficient dechlorination process using calcium-based additives was also developed. The results indicate that the pyrolysis of CMPs occurs in two distinct stages (Stage Ⅰ and Stage Ⅱ), with average apparent activation energies (Ea) of 166.69 kJ/mol and 243.86 kJ/mol, respectively. The process followed mechanism functions involving diffusion, nucleation, and phase boundary reactions. Initially, weak C–Cl and C–H bonds ruptured preferentially, releasing HCl. This was followed by synergistic cleavage of the main C–C chains, generating radicals such as methyl (·CH₃), butyl (·C₄H₉), propylene (·C₃H₅), and phenyl (·C₆H₅). The combination of these radicals with free chlorine radicals (·Cl) resulted in the formation of diverse and complex chlorinated organic compounds. For dechlorination, Ca(OH)₂ was identified as the optimal calcium-based additive, achieving a chlorine removal efficiency of 97.75 %, attributed to its self-decomposition behavior. This study clarifies the transformation pathways of chlorinated pollutants during pyrolysis and proposes a practical calcium-based dechlorination strategy to support sustainable chlorine management in the valorization of plastic waste.
研究领域:
环境化学
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废弃物资源化
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热解技术
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污染控制
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材料循环利用
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反应动力学
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产品关联
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2026
·Vol. 40
·期 10
·e70655
·
IF 4.3
Xiaoju Liu,Sunqiu Fan,Shijin Hu,Zeyu Ye,Xiaoyan Ma,Guoxiong Wang,Xiangrong Ma
Two novel trinuclear ferrocenyl coordination compounds, Fc 3 N 4 /Fe and Fc 3 N 4 /Co, were synthesized as burning-rate catalysts for ammonium perchlorate (AP). The trinuclear architecture, featuring a nitrogen-rich ligand bridging three ferrocene units with transition metal centers, was designed to enhance multi-site electron transfer and thereby promote catalytic performance. At 3 wt% loading, Fc 3 N 4 /Co reduced AP's high-temperature decomposition temperature by 126°C, decreased the apparent activation energy by 74.0 kJ · mol −1 , and increased heat release by 718 J · g −1 , outperforming the corresponding mononuclear analogues and commercial binuclear ferrocene catalysts. Structural characterization (XRD, BET, XPS) and DFT calculations suggest that the superior catalytic activity arises from synergistic Co–Fe electronic modulation that facilitates N–H and Cl–O bond activation, together with a high specific surface area (310.6 m 2 · g −1 ) that provides abundant active sites. This work establishes trinuclear ferrocenyl coordination compounds as a promising platform for high-performance burning-rate catalysts in composite solid propellants.
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DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Qi Zhang,Minghui Li,Zhuofan Zuo,Tianhang Zhan,Xiaoyan Li,Wei Zhang
Cotton, as one of the world’s most crucial economic crops, suffers from a markedly shortened service life of its fabrics due to microbial degradation. In this study, N-isopropylacrylamide (NIPAM) containing amide bonds was grafted onto cotton fibers via atom transfer radical polymerization (ATRP) to develop a heat-resistant and wash-durable N-halamine functionalized cotton fabric (PN@CF-Cl). The resulting material exhibited rapid and potent antibacterial activity, killing over 85 % of bacteria within 1 min of contact and achieving > 99.9 % inactivation of Staphylococcus aureus and Escherichia coli within 10 min. After 50 washing cycles at 75 °C, the antibacterial activity retention remained above 97 %. Following storage for 30 days, rechlorination restored the active chlorine content to its initial level. Even after 10 consecutive chlorination–reduction cycles, the active chlorine recovery reached 98.9 %. In addition, the fabric demonstrated high hydrophobicity, air permeability, and moisture vapor transmission. Molecular dynamics (MD) simulations further validated the dynamic interconversion between N–Cl and N–H in the material, elucidating the underlying mechanism for its regenerative performance. Functionalized cotton fabrics based on the N–Cl/N–H dynamic cycling mechanism can extend product lifespan and hold significant promise for applications in medical protective equipment and smart home textiles.
研究领域:
材料科学
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纺织工程
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抗菌技术
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高分子化学
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分子动力学模拟
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产品关联
DOI
高影响因子
LANGMUIR
·
2021
·
IF 3.882
Cong Xie,Yubin Zhao,Wenbin Shi,Ping Yang
The existing defects on the surface of CsPbX3 nanocrystals (NCs) resulted in the decrease of the photoluminescence quantum yields (PLQYs) of NCs. In this study, we developed a simple strategy, which can make the treated CsPbX3 NCs exhibit high PLQYs and better stability by CdX2 post-treatment at room temperature. The treated CsPbX3 NCs were characterized by X-ray diffraction (XRD) patterns and PL spectra. The shape, size, and crystal structure of the NCs remained unchanged after Cd ion treatment. The PLQYs of CsPbCl3 increased from 24 to 73% and the PLQYs of CsPbBr3 NCs increased from 85 to 92% after treatment. The significant enhancement of PLQYs is ascribed to the effective passivation of surface defects, in which Cd2+ and X– ions occupied the Pb–X vacancies existing on the surface of the NCs. In addition, this strategy was also applied to a mixed halide perovskite. The practical application of CsPbX3 NCs will be extended by this method.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
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