Journal of the American Chemical Society
·
2023
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IF 15
Jia-Hang Wu,Chun-Li Hu,Ting-Kun Jiang,Jiang-Gao Mao,Fang Kong
An unusual O/F ordered d0 transition metal fluoroantimonite, namely, K2SbMoO2F7, has been created by the cationic size effect of alkali metals. It features the largest birefringence of 0.220@550 nm among inorganic antimonites with a halogen element, which is an order of magnitude larger than the disordered A2SbMoO2F7 (A = Rb, Cs). These three new compounds exhibit two different structures, although all of the structures were made of [SbMoO2F7]2– chains formed by SbF5 square pyramids and MoO2F4 octahedrons. A transparent single crystal of K2SbMoO2F7 with dimensions of 7.0 × 5.0 × 1.0 mm3 has been successfully grown by the aqueous solution volatilization method. The UV–vis–MIR transmission spectrum showed that K2SbMoO2F7 can display excellent transmittance in the range of 0.5–5.0 μm and 6.0–9.8 μm, indicating its application potential as a birefringent material in the mid infrared band. This work offers a fresh approach to the design and synthesis of mid infrared birefringent materials.
研究领域:
材料科学
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晶体学
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产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Ning Sun,Yang Qin,Gongjin Xu,Yalei Fan,Bowen Zhang,Yu-Cheng Huang,Ying-Rui Lu,Xiangjiang Dong,Lei Lian,Zhichuan Zheng,Ruyue Wang,Qingyu Kong,Zhiwei Hu,Linjuan Zhang,Ming Lei,Kai Huang,Runze Yu
Atomic-scale modulation of crystalline ordering in heterogeneous catalysts offers a critical pathway to enhance reaction kinetics, yet fundamental understanding of how their dynamic structural evolution governs active-site stability remains elusive. Here, we decode these effects by precisely engineering crystallographic gradients from ordered to disordered states, within octahedral building blocks (isolated octahedra [MO 6 ] or dimer [M 2 O 9 ]) of perovskite oxides Ba 3 M x Ru 2-x O 9 (M = Fe, Co). This atomic-level control induces systematic shifts in d / p -band centers and optimizes charge distribution architectures within active regions. Crucially, the highly disordered Ba 3 FeRu 2 O 9 achieves exceptional stability via a self-sacrificial reduction of iron, which generates a built-in electric field (BEF). The BEF promotes optimal adsorption/desorption kinetics of OH*/H* intermediates for the hydrogen evolution reaction (HER). Consequently, Ba 3 FeRu 2 O 9 delivers benchmark alkaline HER performance, achieving an overpotential of just 24 mV at 10 mA cm −2 and demonstrating operational stability exceeding 600 h. Our results reveal that structural reorganization, enabled by atomic-level ordering modulation, is critical for establishing dynamic structure-performance frameworks to guide advanced catalyst design.
研究领域:
材料化学
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电化学
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催化化学
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固态化学
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能源材料
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产品关联
DOI
高影响因子
NATURE MATERIALS
·
2025
·Vol. 24
·期 8
·1186-1194
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IF 38.5
Shi Zude,Qin Wen,Hu Zhili,Ma Mingyu,Liu Hong,Shu Zhiwen,Jiang Yubing,Xia Hang,Shi Wenyan,Zhang Chao Yue,Sang Xiaoru,Guo Cui,Li Yunxin,Liu Chengzhi,Gong Chengshi,Wang Hong,Liu Song,Tapasztó Levente,Gao Caitian,Liu Fucai,Tang Pengyi,Liu Yuan,Duan Huigao,Xie Erqing,Zhang Zhuhua,Liu Zheng,He Yongmin
Atom-thin amorphous materials (for example, amorphous monolayer carbon) offer a designable material platform for fundamental studies of the disorder system, as well as the development of various applications. However, their growth at a single layer remains challenging since their thermodynamically favourable grains are neither two dimensional nor layered. Here we demonstrate the growth of 1-nm-thick, amorphous metal chalcogenides at a wafer scale using a nanodroplet-driven nanoribbon-to-film strategy. Metal clusters are initially liquified into 1–2 nm droplets at 120 °C, and they then orchestrate the growth of amorphous single-layer nanoribbons, which eventually merge into a continuous centimetre-scale film. Phase-field simulations, combined with our characterizations, suggest a non-equilibrium kinetic growth mechanism, which can be applicable to various films, for example, PtSe x , IrSe x , PdSe x and RhSe x . The synthesized films exhibit a range of unique properties, including tunable conductivity through disorder modulation, high work functions and remarkable catalytic activity, making them promising candidates for hole-injection contacts in p-type transistors and hydrogen production applications. This work opens a pathway for the synthesis of non-layered materials approaching the single-layer limit.
研究领域:
材料科学
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纳米技术
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凝聚态物理
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催化
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半导体器件
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）