CHEMISTRY OF MATERIALS
·
2021
·
IF 9.811
Yilei Hu,Xingxing Jiang,Chao Wu,Zhipeng Huang,Zheshuai Lin,Mark G. Humphrey,Chi Zhang
Tailored structural modulation to combine a broad optical band gap, large nonlinear optical (NLO) effect, and moderate birefringence in a single molecule is a crucial challenge for functional NLO material design. In this study, two first fluorinated molybdate fluoroiodates A2MoO2F3(IO2F2) [A = Rb (RMOFI), Cs (CMOFI)] were successfully accomplished by combining fluorinated d0-transition metal (TM) octahedra [MoO3F3] with fluoroiodate group [IO2F2]. These two compounds crystallize in noncentrosymmetric space group Cmc21 while featuring a zero-dimensional (0D) [MoO2F3(IO2F2)]2– functional motif, and their respective alkali–metal cations act as linkers in polyanions. Both RMOFI and CMOFI possess large second-harmonic generation (SHG) effects (5.0 × KH2PO4 (RMOFI) and 4.5 × KH2PO4 (CMOFI) at 1064 nm), wide band gaps (3.77 eV (RMOFI) and 3.43 eV (CMOFI)), sufficient birefringences (0.217 (RMOFI) and 0.204 (CMOFI) at 1064 nm) to achieve phase-matchable (PM) and broad infrared (IR) transparency region, suggesting that RMOFI and CMOFI can be promising NLO materials in the IR field. Theoretical calculations elucidate that the strong SHG responses and enlarged birefringences of the title compounds originate from the 0D [MoO2F3(IO2F2)]2– functional unit. This is in sharp contrast to the previous work that most fluoroiodates adopt centrosymmetric structures. Our study illustrates that introducing fluorinated d0-TM octahedra into fluoroiodate systems can be a facile method for developing high-performance nonlinear optical materials.
研究领域:
材料科学
·
晶体化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yanping Wang,Dezhen Fang,Kexin Li,Xiushen Ye,Wenjie Han,Pengrui Zhang,Zhijian Wu,Guosheng Shi,Haining Liu
APPW adsorbent designed via 4-aminopyridine (4-AP) tuning of the adsorption energy window. • Achieves ultra-high Cs + selectivity with an Rb + /Cs + separation factor of 11,122. • Enables one-step Cs + separation without Rb + interference. • Shows strong resistance to coexisting ions in salt lake brines and ore leachates. • Establishes a new strategy of adsorption energy window modulation for ion separation. Efficient separation of Cs + from Rb + remains a critical bottleneck due to their similar ionic properties. This work fabricates a 4-aminopyridinium phosphotungstate (APPW) adsorbent by substituting conventional NH₄ + in phosphotungstic acid (HPW) with tailored4-Amino pyridinium ion (4-AP + ) cations to construct a tunable adsorption energy window. DFT calculations confirm the binding energy order ΔE (Rb + -PW) > ΔE (4-AP + -PW) > ΔE (Cs + -PW) , which thermodynamically enables exclusive exchange of 4-AP + by Cs + and suppresses Rb + adsorption. APPW delivers an ultrahigh Rb + /Cs + distribution coefficient of 11,122, outperforming previously reported adsorbents. At Rb + /Cs + molar ratio of 10:1 mimicking natural brine, APPW still achieves selective Cs + capture with negligible Rb + uptake and stable performance across pH 2–11. Coexisting Li + , Na + , K + , Ca 2+ , Mg 2+ barely interfere with Cs + selectivity. Adsorption follows Langmuir monolayer chemisorption and pseudo-second-order kinetics, and the endothermic process proceeds spontaneously. After five regeneration cycles with 4-aminopyridine eluent, APPW retains 87.9% initial Cs + capacity. Practical treatment of oilfield brine achieves 81.91% Cs + recovery under high-salinity complex matrices. This study overcomes the poor Cs + selectivity limitation of traditional heteropolyacid materials and establishes a universal molecular design strategy via adsorption energy window modulation, offering a recyclable high-performance adsorbent for one-step Cs + separation from salt lake brines, ore leachates and radioactive wastewater.
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DOI
高影响因子
Nature Nanotechnology
·
2025
·
IF 34.9
Teng Zhenyuan,Zhang Zhenzong,Tu Ying,Zhang Qitao,Jian Nan,Yang Liujun,Xiao Jiadong,Ding Jie,Huang Longzhen,Teruhsia Ohno,Wang Chengyin,Zhang Dengsong,Yu Han,Lu Jianmei,Su Chenliang,Liu Bin
Selective asymmetric oxidation of glycerol (GLY) to hydroxypyruvic acid (HPA) offers an attractive approach for chiral drug synthesis, but this process is highly challenging. Here we develop a photocatalytic method to achieve heterogeneous selective photooxidation of GLY to HPA over rubidium (Rb) and iridium (Ir) catalytic pairs decorated on a poly(heptazine imide) framework. The Rb sites effectively adsorb GLY molecules through the terminal –OH groups, thus inhibiting their oxidation during photoreaction, while the Ir sites enhance the oxygen reduction reaction and the in situ generated surficial oxygen-reduction radicals on Ir can protect the reactive C-centred radical intermediates produced during photooxidation. The spatial arrangement of Rb and Ir sites facilitates hydrogen extraction—an essential rate-determining step for GLY photooxidation—and protects C3 radical intermediates from overoxidation. This photocatalytic system achieves a remarkable productivity for HPA synthesis (~8,000 μmol of HPA per gram of photocatalyst per hour) under visible-light illumination.
研究领域:
化学工程
·
材料科学
·
光催化
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Zijian Zhang,Xinbo He,Tao Zhang,Hongda Guan,Xuanhui Qu
The infiltration has the advantages of high efficiency and near net forming, making it the mainstream method for preparing diamond/SiC composite. However, no pressure was applied during the infiltration and the SiC matrix originated from the silicon-carbon reaction, resulting in a low diamond content and a large amount of residual silicon. This makes it difficult to further improve the properties of the composite, especially the thermal conductivity. Therefore, reaction bonded SiC (RB-SiC) was proposed as the matrix to reduce silicon content, and composition design was carried out to obtain high content of diamond. The results showed that in the prepared composite, the diamond content (61.14 vol%) reached the theoretical maximum of 90.43 %, and the silicon is only 4.79 vol%. Therefore, the thermal conductivity of composite can reach up to 665.47 W/mK. In addition, the influence of SiC particle size on phase composition, microstructure, and properties was analyzed.
研究领域:
材料科学
·
复合材料
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产品关联
DOI
高影响因子
ACS Nano
·
2024
·
IF 15.8
Kai Wang,Shijia Li,Xue Chen,Jiasen Shen,Huiling Zhao,Ying Bai
Rechargeable aqueous zinc-ion batteries (AZIBs) have been highly desired due to their low cost, intrinsic safety, environmental friendliness, and great potential in large-scale power storage systems. However, their practical applications are impeded by unstable long-term electrochemical performances induced by microstructure degradation of the cathode material, hydrogen evolution reaction in the electrolyte, and dendritic growth on the zinc anode upon cycling. In this work, rubidium cations (Rb+) are introduced to synthesize an Rb+-preintercalated NH4V4O10 (NVO-Rb) composite. The contribution of Rb+ ions as pillars in V–O interlayers to facilitating Zn2+ storage is investigated first, and then the influences of partial Rb+ ions from the NVO-Rb cathode on the aqueous electrolyte and zinc anode are specially inspected from different viewpoints. Based on a series of characterization results, it is comprehensively elucidated that the partial Rb+ ions into the electrolyte suppress the generation of byproducts on the cathode and regulate the dendrite growth on the zinc anode, thus effectively promoting the long-term electrochemical performances of NVO-based AZIBs. The assembled Zn∥Zn(CF3SO3)2∥NVO-Rb cell can exhibit a high specific capacity and optimized Zn2+ diffusion kinetics, especially an improved electrochemical cyclability with a capacity retention of 87.6% at 5 A g–1 over 10000 cycles. This study enlightens the multiple roles of cation-preintercalation in the layered structure material and provides a feasible strategy for the development of high-performance aqueous batteries.
研究领域:
材料科学
·
电化学
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产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2020
·
IF 4.825
Xuehua Dong,Ying Long,Xiaoyu Zhao,Ling Huang,Hongmei Zeng,Zhien Lin,Xin Wang,Guohong Zou
Two new antimony fluoride sulfates named A6Sb4F12(SO4)3 (A = Rb, Cs) with unique crown-like clusters have been successfully synthesized by introducing Sb3+ with a stereochemically active lone pair in the sulfate system through a facile hydrothermal method. The structure regulation induced by the cation sizes results in the symmetry difference in these two title compounds, i.e., Rb6Sb4F12(SO4)3 crystallizing in the polar noncentrosymmetric (NCS) space group of P3 and Cs6Sb4F12(SO4)3 in the centrosymmetric (CS) space group of P1̅. Detailed characterizations, including XRD, thermal behaviors, optical properties, and the theoretical calculations, for these two compounds have been performed. The discovery of the unique crown-like clusters observed in A6Sb4F12(SO4)3 (A = Rb, Cs) enriches the diversity of structures for antimony sulfates systems. Simultaneously, a summary and comparison for all reported antimony halide sulfates has been made to illustrate the synergistic effect of the stoichiometric ratio and cation sizes on the macroscopic centricity and the framework structure, which will guide the systematical discovery of antimony(III)-based functional materials in future.
研究领域:
无机化学
·
材料科学
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2021
·Vol. 8
·期 8
·2061-2067
·
IF 6.569
Shiwei Liu,Bingbing Zhang,Hongping Wu,Hongwei Yu,Zhanggui Hu,Jiyang Wang,Yicheng Wu
Ultraviolet nonlinear optical (UV NLO) crystals are the key and basic materials for solid-state lasers. Phosphates as UV NLO crystals are limited in practical applications due to their weak second-harmonic generation (SHG) response. In this work, two non-centrosymmetric pyro-phosphates of K3SrBi(P2O7)2 and Rb3SrBi(P2O7)2 have been synthesized by a high-temperature solution method. Systematic property measurements show that they both have short UV cut-off edges (∼240 nm) and large SHG responses (4 × KDP for K3SrBi(P2O7)2 and 2.1 × KDP for Rb3SrBi(P2O7)2). Thus, they are both promising UV NLO candidates. In particular, K3SrBi(P2O7)2 shows the strongest SHG response in the family of A3BBi(P2O7)2 (A = K, Rb, B = Sr; A = Rb, Cs, B = Ba, Pb), which is about twice higher than that of isomorphic Rb3SrBi(P2O7)2. The study of the structure–property relationship shows that the synergistic effect of P2O7 dimers and BiO6 polyhedra is the main contribution to their excellent NLO properties. And better orientations of P2O7 dimers and larger distortion of BiO6 units play important roles in enhancing the SHG response of K3SrBi(P2O7)2.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2014
·
IF 2.423
Pan Liang,Qiu-Yue Kang,Lu Du,Zhi-Hong Liu
Two pure microporous materials, Rb[ZnBP 2 O 8 ] and Cs[ZnBP 2 O 8 ], have been synthesized and characterized by XRD, FT-IR, DTA-TG techniques and chemical analysis. The molar enthalpies of solution of Rb[ZnBP 2 O 8 ] and Cs[ZnBP 2 O 8 ] (s) in 3 mol · dm −3 HCl (aq), of Zn(PO 3 ) 2 (s) in (HCl + H 3 BO 3 ) (aq), and of RbCl (s)/CsCl (s) in [Zn(PO 3 ) 2 + HCl + H 3 BO 3 ] (aq) were measured by microcalorimeter at T = 298.15 K, respectively. With the incorporation of the previously determined enthalpy of solution of H 3 BO 3 (s) in 3 mol · dm −3 HCl (aq), together with the use of the standard molar enthalpies of formation for Zn(PO 3 ) 2 (s), RbCl (s)/CsCl (s), H 3 BO 3 (s), HCl (aq) and H 2 O (l), the standard molar enthalpies of formation of −(3198.5 ± 1.2) kJ · mol −1 for Rb[ZnBP 2 O 8 ] and −(3212.7 ± 1.2) kJ · mol −1 for Cs[ZnBP 2 O 8 ] at T = 298.15 K were obtained on the basis of the appropriate thermochemical cycle. In addition, the molar enthalpy of formation of −(2944.4 ± 1.2) kJ · mol −1 for [ZnBP 2 O 8 ] − has also been estimated by a group contribution method, which can be used to predict the Δ f H m θ of the other similar borophosphates. Moreover, these data have been further used to compare the thermodynamic stability of this series of borophosphates.
研究领域:
材料科学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Yaying Shen,Chang Liu,Peipei Hou,Mingjia Zhi,Chunmei Zhou,Wenxiang Chai,Qichun Zhang,Yi Liu
Three new quaternary thioantimonates(III) ACu 2 SbS 3 (A = K, Rb, Cs) have been prepared through the surfactant-thermal method. X-ray single crystal diffraction analysis reveals that these three compounds are isostructural and feature a two-dimensional layered structure. Both experimental and theoretical studies confirm they are semiconductors with narrow band gaps. Our results clearly indicated that surfactants, as reaction media, could offer exciting opportunities for exploring novel multinary chalcogenides with diverse crystal structures and interesting physical properties.
研究领域:
材料科学
·
化学
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DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2016
·Vol. 642
·期 4
·343-349
·
IF 1.261
Xiao Zhao,Dajiang Mei,Jingli Xu,Yuandong Wu
Three compounds A Sb 2 (SO 4 ) 2 (PO 4 ) ( A = H 3 O + , K, Rb) were obtained from the reactions of Sb 2 O 3 , A 2 CO 3 ( A = Li, Rb) or K 2 SO 4 and NH 4 H 2 PO 4 in H 2 SO 4 (98 %) at 220–250 °C. Their structures were determined by single-crystal X-ray diffraction. All compounds crystallize in the triclinic space group P (no.2) and are isostructural. The crystal structures consist of two-dimensional 2 ∞ [Sb 2 (SO 4 ) 2 (PO 4 )] – anionic layers and alkali cations, which are located between anionic layers. The anionic layers are composed of [SbO 4 ] ψ-trigonal bipyramids, [SbO 5 ] ψ octahedra, [SO 4 ] tetrahedra, and [PO 4 ] tetrahedra. All compounds are characterized by solid state UV/Vis/NIR diffuse reflectance spectra, FT-IR spectroscopy, and Raman spectroscopy.
研究领域:
化学
·
材料科学
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产品关联
DOI
高影响因子
ONCOGENE
·
2023
·Vol. 42
·期 29
·2278-2293
·
IF 8
Chen Yihuan,Dai Xiaoshuo,Chen Wei,Qiao Yan,Bai Ruihua,Duan Xiaoxuan,Zhang Kai,Chen Xinhuan,Li Xin,Mo Saijun,Cao Wenbo,Li Xiang,Liu Kangdong,Dong Ziming,Lu Jing
Cisplatin (CDDP) is the first-line drug in the clinical treatment of esophageal squamous cell carcinoma (ESCC), which has severe nephrotoxicity. Diosmetin (DIOS) can protect kidney from oxidative damage, however, its function in ESCC is unknown. This study aims to explore the effect and mechanism of DIOS on ESCC and its combined effect with CDDP. Herein, we found that DIOS significantly inhibited the progression of ESCC in vitro and in vivo. Furthermore, the anti-tumor effect of DIOS was not statistically different from that of CDDP. Mechanically, transcriptomics revealed that DIOS inhibited the E2F2/RRM2 signaling pathway. The transcriptional regulation of RRM2 by E2F2 was verified by luciferase assay. Moreover, docking model, CETSA, pull-down assay and CDK2 inhibitor assay confirmed that DIOS directly targeted CDK2, leading to significant suppression of ESCC. Additionally, the patient-derived xenografts (PDX) model showed that the combination of DIOS and CDDP significantly inhibited the growth of ESCC. Importantly, the combined treatment with DIOS and CDDP significantly reduced the mRNA expression levels of kidney injury biomarkers KIM-1 and NGAL in renal tissue, as well as the levels of blood urea nitrogen, serum creatinine and blood uric acid compared to the single treatment with CDDP. In conclusion, DIOS could be an effective drug and a potential chemotherapeutic adjuvant for ESCC treatment. Furthermore, DIOS could reduce the nephrotoxicity of CDDP to some extent.
研究领域:
肿瘤学
·
药理学
·
分子生物学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Jie Tang,Huihui Zhang,Haotian Chang,Xiaotian Guo,Chaoyang Wang,Yuquan Wei,Zhengren Huang,Yong Yang
Silicon carbide is one of the most important high-performance engineering ceramics. However, SiC ceramics with complex structure and high mechanical performance are difficult to shape, sinter, and process. Additive manufacturing is expected to solve the above problems, but the photosensitive slurry with low solid content leads to high residual Si content and low strength of final components. Here, we presented one novel strategy to prepare high-strength SiC components with complex structure by introducing quasi-spherical diamond powder as the high-density carbon source through vat photopolymerization 3D printing technology and reactive melt infiltration process. The final RB–SiC ceramics exhibited a specific flexural strength of 312.45 ± 18.75 MPa and elastic modulus of 359.16 ± 4.57 GPa, demonstrating one of the highest flexural strength and elastic modules among those reported for 3D-printed SiC composites. Owing to the high mechanical performance and simple fabrication process, this strategy has significant advantages in the manufacturing of structural SiC ceramics.
研究领域:
材料科学
·
增材制造
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）