Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Wang Guancheng,Wei Xiaoli,Feng Kaizheng,Wu Yunfei,Dong Haijiao,Lu Mingze,Du Wei,Fang Qianglong,Ju Ming-Gang,Ma Jing-Yuan,Jiang Yali,Wu Haoan,Ma Ming,Zhang Yu
Prussian blue nanoparticles (PBNPs) have emerged as versatile nanozymes with reactive oxygen species (ROS)-scavenging capabilities, predominantly applied in antioxidant therapies. In this work, we present a combined theoretical and experimental study demonstrating that modulating Fe coordination environments can fundamentally reconfigure PBNPs’ catalytic properties, enabling ROS generation and pro-oxidative functionality. Ab initio molecular dynamics revealed different H 2 O 2 lysis mechanisms at Fe sites with varying coordination numbers: Low-coordinated center (FeN 4 ) induced hydrogen atom transfer to form Fe=O species, while high-coordinated FeN 5 generated ·OH radicals via H + -assisted homolysis under acidic conditions. Guided by calculations, Cs-doped PBNPs (Cs-PBs) with elevated coordination numbers were synthesized via alkali cation stoichiometric control, leveraging high distribution coefficient and low hydration energy of Cs + . Experimental results confirmed radical generation in Cs-PBs aligned with theoretical predictions. The size-optimized Cs-PBs demonstrated ultrahigh peroxidase-like activity (1182.26 U·mg -1 ) and outperformed ROS generating properties in both pollutant degradation and chemodynamic therapy. This work redefines PBNPs’ catalytic potential beyond conventional antioxidant roles, and lays the foundation for innovative environmental and therapeutic solutions.
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CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Luyong Zhang,Zhencheng Wu,Jingdong Yan,Shibin Wang,Zilong Chen,Zhihua Yang,Fangfang Zhang,Shilie Pan
Sulfates have remained promising candidates for deep-ultraviolet (DUV) optical crystals owing to the inherently wide bandgaps induced by the [SO4] tetrahedral groups. However, the structural rigidity of [SO4] tetrahedra imposes severe restrictions on the polarization anisotropy, fundamentally preventing sulfates from achieving sufficient birefringence required for regulating light polarization. Herein, by incorporating f0 rare earth metal cation Y3+ into alkali metal sulfates, we synthesized six compounds, AY(SO4)2 and A3Y(SO4)3 (A = K, Rb, Cs). They exhibit dramatically enhanced birefringence between 0.013–0.056 at 546 nm, with up to 25 times that of their parent alkali metal sulfates, which originate from the highly aberrant Y–O polyhedra and the dimensionality reduction of the Y–O–S network regulated by A-site cations. This study provides valuable insights into the further exploration of sulfate-based optical materials.
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INORGANIC CHEMISTRY
·
2026
·Vol. 65
·期 29
·17206-17214
·
IF 4.6
Zhang Yanjiao,Gong Pifu,Chen Mingxing,Wang Zhigang,Wang Xinfang,Qi Man,Han Yunhua,Jia Zhen,Xia Mingjun
Tunable fluorescence emission endows luminescent materials
with
immense applications in optoelectronic devices and information security.
Herein, broad-wavelength photoluminescence (PL) tuning from yellow
to white to blue is realized in a zero-dimensional (0D) K 4 CdCl 6 halide via a facile Rb/Sn codoping strategy. Interestingly,
K 4 CdCl 6 and isostructural Rb 4 CdCl 6 halides exhibit yellow and blue PL emissions via the homovalent
doping of Sn 2+ , respectively. The relative intensity ratio
of yellow and blue emission bands can be effectively regulated in
K 4 CdCl 6 :Sn 2+ halides by Rb + alloying; accordingly, the continuous luminescence color tuning
covering yellow, white, and blue spectral regions was successfully
achieved. Density functional theory calculations further verify that
the doping of Sn 2+ leads to the appearance of an impurity
energy level within the band gap, accelerates electronic transitions,
and ultimately enhances PL emission efficiency. On the basis of this
rationally designed tunable luminescent system, the three-level color-coded
intelligent password devices, combining multimode optical anticounterfeiting
and digital information encryption, were developed. This work not
only develops a reliable ion doping strategy for luminescence modulation
in the metal halides but also expands their diversified application
prospects in advanced optoelectronic fields.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·Vol. 71
·期 9
·3749-3760
·
IF 2.4
Zhuang Ziyu,Zhang Manman,Li Dongdong,Gao Dandan,Feng Haitao
The phase equilibria of ternary systems
phenylboronic
acid (C 6 H 5 B(OH) 2 ) + KCl/RbCl/CsCl
+ H 2 O were investigated at 298.15 and 348.15 K using
a direct
isothermal dissolution equilibrium method with mannitol-NaOH titration.
Solid phases were characterized by Schreinemakers’ wet method,
XRD, Raman, IR, and TG-DSC. No new adducts were detected, in contrast
to the stable adduct 2H 3 BO 3 ·3CsCl formed
in the H 3 BO 3 + CsCl + H 2 O system.
All three systems are of the simple eutectic type, with two solubility
branches and one invariant point. C 6 H 5 B(OH) 2 exerts a weak salting-in effect on the chlorides, independent
of temperature. Conversely, the chlorides salt out C 6 H 5 B(OH) 2 following the order CsCl < RbCl < KCl,
an effect that increases with temperature. This pattern differs from
H 3 BO 3 -alkali chloride systems (salting-in) but
resembles H 3 BO 3 -alkaline earth chloride systems
(salting-out). The salting-out is attributed to salt-induced reduction
of water activity, which disrupts the hydration layer of the solute
and promotes its dehydration condensation to triphenyl boroxine. From
a crystallographic viewpoint, the layered structure of H 3 BO 3 provides suitable sites for Cs + , whereas
the three-dimensional network of C 6 H 5 B(OH) 2 does not. This structural insight suggests that the layered
1,4- and 1,3-benzenediboronic acids may form similar adducts with
Cs + , warranting further investigation.
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Journal of Materials Chemistry A
·
2026
·
IF 9.2
Zhenghao Liu,Shiyu Jiang,Rui Zhang,Xiangjin Du,Chunjie Huang,Chengyu Tan,Xinru Qin,Hongkun Wei,Yuqi Cui,Yiming Li,Jiangjian Shi,Huijue Wu,Yanhong Luo,Dongmei Li,Qingbo Meng
Flexible perovskite solar cells (F-PSCs) exhibit much wider application scenarios due to the advantages of light-weight, portability, bendable and compatible with curved surfaces etc. However, unsatisfactory efficiency and mechanical stability severely restrain its further development. Here, an interfacial adhesion strategy is reported to improve mechanical stability of n-i-p typed F-PSCs. A poly-ECA is inserted between the perovskite layer and SnO2 layer by self-polymerization of ethyl α-cyanoacrylate (ECA) under a mild condition. Strong interactions between poly-ECA and SnO2/perovskite layer can enhance the mechanical strength of the buried interface. In the meantime, interfacial defects are also passivated and the energy level alignment at the perovskite interface bottom is optimized, thus facilitating charge transportation. Based on this interfacial adhesion strategy, 25.7% PCE has been achieved with a certified PCE of 25.04% for small-area flexible PSC devices, and 21.9% PCE has been obtained for large-area F-PSC modules (aperture area: 22.55 cm2). Additionally, device stabilities, particularly mechanical stability, has been significantly improved, 95% of its initial efficiency can be maintained for small-area devices after 10000 bending cycles. This work provides a simple, convenient way to simultaneously enhance the efficiency and stability of flexible devices.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Jingyi He,Shimin Liu,Shiqing Xu
All-inorganic lead halide perovskite (CsPbX 3 , X = Cl, Br, or I) quantum dots (QDs) glasses have attracted considerable attention due to their excellent stability. However, realizing pure-blue emission CsPbX 3 (X = Br, Cl) QDs glasses with high photoluminescence quantum yield (PLQY) remains a challenge. This study employs RbCl as a dual-functional dopant to regulate the photoluminescence (PL) wavelength and promote the crystallization of CsPbBr 2 Cl 1 QDs embedded in a glass matrix. During thermal treatment, Cl − ions separated from the glass network enhance CsPbBr 2 Cl 1 QD crystallization by increasing the internal Cl/Br ratio and passivating Cl vacancy defects. Simultaneously, high-field-strength Rb + ions partially enter Cs + sites, further promoting crystallization and suppressing Cl vacancies. The synergistic effect of Cl − and Rb + ions induces PL wavelength from 495 nm to 473 nm, while the PLQY increases from 17% to 25%. Among the RbCl-doped samples, the LED based on 4.5 mol% RbCl exhibits the widest color gamut, covering 79.7% of the Rec. 2020 standard. This study introduces a bifunctional dopant strategy to fabricate high-performance, pure-blue-emitting CsPbBr x Cl 3-x QDs glasses. The developed material shows great potential for advanced applications in LED lighting, backlight displays, information storage, and optical anti-counterfeiting.
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ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Yalin Zhai,Hui Li,Chengyu Luan,Songling Feng,Peng Wan,Caixia Kan,Daning Shi,Mingming Jiang
Solar-blind ultraviolet polarization detection is critically hindered by the intrinsic isotropy, complex fabrication, and insufficient polarization sensitivity of conventional ultrawide-bandgap (UWBG) semiconductors such as Ga 2 O 3 and h-BN. Here, we break this deadlock by introducing a rationally designed lead-free perovskite analogue, one-dimensional Rb 2 AgCl 3 single crystals, which were synthesized via a spatially confined cooling method. Its unique chain-like lattice endows an ultrawide bandgap of 4.83 eV, exceptional thermal stability up to 934 K, and pronounced in-plane optical anisotropy. Enabled by these attributes, a Schottky-junction self-powered photodetector achieves unprecedented solar-blind ultraviolet performance: a responsivity of 0.2 A/W, specific detectivity of 3.46 × 10 12 Jones, external quantum efficiency of 96%, ultrafast response of 7.9/17.5 µs, and a record dichroic ratio of 15.8 at 255 nm. These metrics not only surpass all reported perovskite-based devices but also rival, and even outperform, state-of-the-art UWBG semiconductors. Furthermore, the detector enables high-fidelity polarization imaging, convolutional neural network integration with >99% recognition accuracy, and a 6 × 6 array encryption system based on physically unclonable function keys. This work elevates low-dimensional lead-free perovskites from mere substitutes to genuine rivals, establishing a transformative platform for intelligent, self-powered solar-blind optoelectronics.
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CRYSTAL GROWTH & DESIGN
·
2025
·
IF 3.4
Xinglong Liu,Lei Wu,Hongheng Chen,Menglin Zhu,Yi Huang,Qun Jing,Xue Yu,Zhaohui Chen
In this work, three novel phosphates – LiRb(PO3)2, NaCs(PO3)2, and RbSr2(PO3)5 – were synthesized via high-temperature solution methodology. NaCs(PO3)2 and RbSr2(PO3)5 crystallize in the centrosymmetric (CS) space groups P21/c and P1̅, respectively, while LiRb(PO3)2 crystallizes in the noncentrosymmetric (NCS) I4̅ space group. It was also found that different cations can flexibly regulate the linking modes of the P–O framework between cyclic and chain. Performance tests show that these three compounds have large band gaps and deep ultraviolet (deep-UV) cutoff edges below 200 nm. First-principles calculations suggest that P–O units contribute mainly to their optical properties. The second harmonic generation (SHG) of LiRb(PO3)2 and the birefringence of the title compounds were also studied. This work provides a valuable guide for designing phosphates with different structural types and deep-UV transmitting optical materials.
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INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Zhengyan Lin,Huili Liu,Liling Cao,Ling Huang,Xuehua Dong,Yuqiao Zhou,Daojiang Gao,Ning Ye
Polar crystal materials hold significant potential for advanced scientific and technological applications; however, their synthesis remains challenging due to stringent symmetry requirements. In this work, flexible π-conjugated malonate groups with high polarity and diverse conformations were employed as polar functional basic modules (FBMs) to overcome this challenge. Three new crystals, RbLi(C3H2O4)·H2O, Rb2Li(C3H3O4)3·H2O, and C(NH2)3(C3H3O4), were successfully synthesized via a deprotonation-regulated conformational switching strategy. Remarkably, all three compounds crystallize in polar space groups and simultaneously exhibit strong second-harmonic generation responses (1.5–3.0 × KH2PO4 (KDP)), large birefringence (0.043–0.163@546 nm), and short UV cutoff edges (230–244 nm). This study not only discovers three promising UV polar crystals but also elucidates the conformational evolution of malonate-based FBMs, offering valuable guidance for the rational design of new polar crystal materials.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·
IF 2.4
Ziyu Zhuang,Manman Zhang,Dandan Gao,Wolfgang Voigt,Dongdong Li,Haitao Feng
Previously, the formation of a stable adduct 2H3BO3·3CsCl (BC) was observed in CsCl(aq) but not in RbCl(aq). The phase equilibria of the H3BO3 + RbCl + CsCl + H2O system were studied to assess the potential for selective separation of Cs from Rb. Solubility isotherms were determined experimentally. Appropriate liquid composition ranges were preselected using modeling with ISLEC’s equilibrium software. Schreinemakers’ wet solid method, XRD, Raman and IR spectra, Roozeboom’s plots, and SEM-EDS were applied to identify the four phase regions H3BO3, 2H3BO3·3(Cs,Rb)Cl (Bss), (Rb,Cs)Cl, and (Cs,Rb)Cl. Notably, in the presence of RbCl, the BC phase incorporates Rb+, forming a substitutional solid solution, Bss, which inhibits selective separation of CsCl. Roozeboom’s plot analysis revealed that RbCl exhibits higher solubility in the Bss phase compared to the (Cs,Rb)Cl solid solution. The separation factor βCs/Rb between the solid Bss phase and the corresponding solution was 2.0, significantly lower than that of (Cs,Rb)Cl (βCs/Rb = 9.5) in the ternary system without H3BO3. This indicates a stronger coordination between CsCl and H3BO3 relative to that of RbCl in the ternary system without H3BO3. The above understanding provides new strategies designing novel B–OH compounds to enhance Cs/Rb separation efficiency in aqueous systems.
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Materials
·
2022
·Vol. 15
·期 18
·6411
·
IF 3.748
Zhangyang Kang,Maogang He,Guangxuan Lu
In this study, the phase diagram of the NaCl+RbCl binary system was measured using differential scanning calorimetry, and the measured molar percentages of the binary mixture RbCl ranged from 12 to 97 mol%, updating and extending the experimental data for this binary system. The liquid phase of this system was thermodynamically modeled using a modified quasichemical model, and a computer optimization program for evaluation of the experimental data on phase equilibria and other thermodynamic data was developed based on this model. All thermodynamic models of the NaCl+RbCl binary system were constructed; calculations of the phase diagram, enthalpy of mixing, and activity coefficient of NaCl of the NaCl+RbCl binary system were completed using the obtained model parameters; and the calculated eutectic point positions werexRbCl= 0.567 and 550.2 °C. The calculated results were able to reproduce the various types of experimental data well, and the thermodynamic self-consistency between different types of experimental data was demonstrated.Keywords:differential scanning calorimetry;modified quasichemical model;phase diagram;thermodynamics;phase equilibria;activity coefficient
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HYDROMETALLURGY
·
2022
·
IF 4.217
Wanlei Geng,Debin Wang,Yinfeng Liu,Jialing Zhang,Limei Zhong,Runxiong Lin,Li Ding,Lianying Wu,Dianquan Dong
Developing a stable and efficient adsorbent to recover Cs + from liquid resources or to remove radioactive Cs + from wastewater is challenging. In this study, the precursor Cs 2 Ti 6 O 13 (CTO) was synthesized by the solvothermal and solid-phase sintering methods for the first time, then it was acid-modified to synthesize a novel H-type titanium-based material (H-CTO nanosheets). A series of batch adsorption experiments was carried out. The adsorption of Cs + on H-CTO was evaluated under different experimental conditions, including contact time, temperature, initial Cs + concentration, pH, and interfering ions. Experiments show that H-CTO exhibits a larger adsorption capacity (329 mg/g) and better cycle performance than the currently reported titanium-based adsorbents. The cesium ions were easily eluted by the 0.2 M HCl solution; the adsorption capacity did not decrease significantly after five cycles. Furthermore, the adsorption behavior of Cs + on H-CTO can be described by the Langmuir isotherm and pseudo-second-order kinetic models. Characterization using IR and Raman spectroscopic analyses indicates that the adsorption mechanism of Cs + on H-CTO involves O H bond cleavage and O Cs bond formation. Thermodynamic studies showed that low temperatures are favorable for Cs + adsorption and are spontaneous. Overall, the results suggest that H-CTO nanosheets are promising for the recovery or removal of Cs + ions from Cs-containing liquid ores or radioactive wastewater .
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