APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Chao Zhang,Tianhao Sun,Shuangping Xu,Juncheng Ma,Mingyu Zhang,Yanqing Qu,Hongge Jia,Jingyu Xu,Xing Wang
Bismuth-based materials are regarded as green materials for dealing with radioactive iodine. However, the sole use of Bi has problems such as agglomeration. Dispersing Bi in the matrix material to overcome the disadvantage of Bi’s easy agglomeration to prepare Bi-based composites with low cost and high adsorption capacity is an urgent need for iodine gas capture. Here, five kinds of Bi-containing polyacrylonitrile (PAN) porous carbon materials (Bi/PAN-P) were prepared by thoroughly mixing Bi as adsorbent with contents of 10 wt%, 20 wt%, 30 wt%, 40 wt% and 50 wt%, PAN as the matrix and dimethyl sulfoxide (DMSO) as the solvent, and then carbonizing. The results show that the Bi loaded on Bi/PAN-P is uniformly distributed and the material is mainly mesoporous. It has a rapid adsorption rate for gaseous iodine, reaching more than 50 % of the maximum adsorption capacity within the first 90 min, and its speed far exceeds the adsorption rate of pure PAN carbon materials. Especially when the Bi content is 30 wt%, the iodine adsorption capacity reaches 4057 mg/g, which is about 20 times that of commercial silver exchange zeolite. Based on experimental and model simulation results, the adsorption of iodine by Bi/PAN-P mainly through chemical adsorption.
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INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Chongbo Qi,Yicen Liu,Zhongyue Li,Zhenyu Li,Lei Yang,Yuyu Jia
The effective capture of radioactive iodine (I2) is crucial for the sustainable development of nuclear energy. Functionalized metal–organic frameworks have demonstrated broad applicability in gas adsorption, with I2 capture receiving significant attention in recent studies. In this study, we report a pyridine-containing zinc-based MOF (Zn-MOF-bpe) synthesized via a straightforward one-step hydrothermal method. Benefiting from the nitrogen-rich pyridine functionalities, this material exhibits exceptional performance in vapor I2 adsorption with a capacity of 4.49 g g–1 at 75 °C. We investigated the thermal stability of Zn-MOF-bpe, along with its iodine adsorption performance under varying temperature and humidity conditions and its retention capacity and recyclability after I2 adsorption. The results demonstrate the material’s outstanding iodine capture performance. Furthermore, the Zn-MOF-bpe/PVP nanofiber membrane was successfully fabricated on porous Al2O3 ceramics using electrospinning technology, demonstrating its effective application in I2 adsorption. The incorporated nitrogen active sites not only enhance the interactions between the adsorbent and I2 but also facilitate the conversion of I2 to polyiodides. The outstanding adsorption performance of Zn-MOF-bpe provides a rational pathway for developing high-efficiency MOF-based I2 capture materials.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Fang Miao,Lun Xiong,Mingquan Jiang,Guolin Yang,Hui Zhu,Jiehong Lei
Improper treatment of radioactive iodine vapor generated during spent fuel reprocessing can lead to significant environmental hazards. This study aims to synthesize a choline hydroxide-functionalized silica aerogel composite material (CH-Si aerogel) to enhance iodine capture through hydroxyl-induced polarization of iodine molecules. The polarized iodine subsequently forms polyiodide anions, which are effectively captured via electrostatic interactions with the positively charged quaternary ammonium nitrogen centers. The results indicate that CH-Si aerogel achieves an iodine adsorption capacity of up to 1362.43 mg/g, significantly surpassing previously reported silica-based adsorbents. DFT calculations reveal that hydroxyl groups substantially enhance the polarization of iodine molecules, leading to changes in the electron density at the adsorption sites. Furthermore, the quaternary ammonium nitrogen centers interact with polyiodide anions through electrostatic adsorption, reinforcing the material’s iodine capture capability. The material exhibits adsorption energies of –1.855 eV for I 2 and –3.875 eV for polarized iodine ions, demonstrating robust stability and excellent adsorption performance. In addition, CH‑Si aerogel maintains excellent iodine capture capacity even under complex conditions of high humidity (RH=50 %) and highly humid acidic environments (pH=1). CH-Si aerogel exhibits excellent potential for practical applications, offering new insights for the development of efficient iodine capture materials.
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ACS Nano
·
2026
·
IF 17.3
Yongshuai Liu,Wenyi Lu,Fengkai Zuo,Shaochong Cao,Pengshu Yi,Longli Ma,Zhu Liu,Shan He,Zhouhong Ren,Liang Cao,Mingxin Ye,Jianfeng Shen
Aqueous zinc–iodine (Zn–I2) batteries, owing to their compelling combination of environmental friendliness, cost-effectiveness, and enhanced safety features, are regarded as promising candidates for large-scale energy storage systems. Nevertheless, the limited I2/2I– two-electron redox chemistry and nonuniform Zn deposition critically impair the energy density and cycling stability of aqueous Zn–I2 batteries, hindering their practical deployment. Herein, multifunctional cyclohexylamine hydrochloride (CHAH) additive is introduced into the ZnSO4 electrolyte, which synergistically enables a dendrite-free Zn anode for extended cyclability and simultaneously activates a stable four-electron 2I+/I2/2I– redox chemistry at the I2 cathode. Combined experimental characterization and theoretical calculations reveal that the cyclohexylamine (CHA) reconstructs the Zn2+ solvation structure by displacing active H2O, while fostering a nitrogen-rich solid electrolyte interphase on the Zn anode at the same time. It suppresses parasitic reactions and enables excellent Zn plating/stripping cycling for 2150 h at 1 mA cm–2/1 mAh cm–2. Furthermore, nucleophilic amine groups in CHA act synergistically with Cl– to coordinate I+ by forming (2CHA)ICl, which improves four-electron 2I+/I2/2I– redox kinetics and achieves exceptional Zn–I2 battery performances (256.3 mAh g–1 at 10 A g–1). This bilateral nitrogen interface chemistry mechanism offers key insights into the development of high-performance Zn–I2 batteries.
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ACS Nano
·
2026
·
IF 17.3
Chen Li,Chengyu Li,Zheng Tang,Ke Liu,En Chen,Yiming Wang,Yazhou Zhou,Jing Guo,Yonggang Wang
Interlayer engineering offers a compelling strategy for tailoring emergent quantum states in van der Waals materials. The latest discoveries of nickel-based superconducting materials have once again ignited extensive interest in exploring transition-metal-based high-temperature superconductors. Two-dimensional metal-centered geometry, subtle valence regulation, and interactions dominated by interlayer stacking are key to achieving the superconducting state. Here, we present that pressure-mediated interlayer sliding in the antiferromagnetic honeycomb lattice CrPSe3 triggers a cascade of electronic transitions, including an insulator-to-metal crossover, the emergence of a density-wave-like order, and possible superconductivity. The resulting phase diagram reveals a maximum transition temperature of 5.8 K concomitant with complete suppression of the density-wave-like order at 30.1 GPa. Comprehensive structural analyses uncover successive interlayer sliding accompanied by aberrant compressibility and pronounced volume collapse. Atomic-resolution imaging corroborates the irreversible sliding process, leading to a distinct metastable electronic state upon decompression. These insights underscore interlayer sliding as a powerful tool for manipulating quantum states in van der Waals materials.
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Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·245
·
IF 38.5
Wang Peng,Wang Jian,Bai Longwei,Li Na,Zhou Chuancong,Chen Mingyang,Zhang Jialiang,Xing Zhenyue,Zhao Zaowen,Zhang Wei,Shi Xiaodong
An effective and facile injection strategy based on iodine redox chemistry is proposed to restore lost lithium component in spent LiFePO 4 battery.
In-situ spectroscopic characterization is conducted to unveil the underlying redox mechanism of iodine-mediated lithium reactivation, elucidating its impact on both the cathode and anode.
Regenerated LiFePO 4 cells exhibit ~ 7% capacity recovery, fast charge transfer behavior, and extended cycle life beyond 300 cycles at 1C, outperforming conventional direct recycling methods while maintaining superior cyclic stability.
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Nature Synthesis
·
2026
·
IF 22.6
Li Fangbing,Long Yu,Wu Zhitan,Ye Ruiqing,Li Zhiguo,Zhang Boya,Yu Jinyang,Wang Feifei,Chen Zihui,Geng Chuannan,Chi Sijia,Wang Li,Lin Zifeng,Simon Patrice,Tao Ying,Yang Quan-Hong
Green, scalable and efficient synthesis methods are critical for advancing MXene research and practical applications. However, the production of delaminated MXenes still relies on complex multistep processes to achieve both selective etching and delamination. Here we propose a single-step strategy to directly transform MAX phases into delaminated MXenes using a deep eutectic solvent (DES) based on cobalt chloride/choline chloride (CoCl 2 ·6H 2 O/ChCl). This system combines a redox process between Lewis acidic salts and A-site elements with an expansion effect from organic ligand decomposition, enabling integrated etching, delamination and surface functionalization. The DES-derived MXenes exhibit unique surface chemistry with –Cl, –O and –NH y R 1− y terminations, delivering exceptional lithium-ion storage performance (451 mAh g −1 at 0.05 A g −1 ). Notably, this approach yields MXenes with positively charged surfaces, suppressing anionic polyiodide shuttling in zinc–iodine batteries. The resulting batteries retain 146 mAh g −1 capacity after over 60,000 cycles at 10 A g −1 . This work provides an environmentally friendly and scalable route to delaminated MXenes, integrating structural control with interfacial engineering, and expands their versatility in energy storage and beyond.
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Journal of Materials Chemistry C
·
2026
·
IF 5.1
Chengzheng Ye,Zhuo Wang,Guoshuai Ban,Xin Wang,Pengxiang Ning,Erli Zhang,Dihang Wu,Yuliang Song,Ruxin Liu,Peng Hu,Yang JIAO,Haibo Fan,Feng Teng,Xin Zhao,Jiaming Song
In recent years, transition metal phosphorus trichalcogenides have been successfully applied on multiple occasions in the field of photoelectrochemical (PEC) photodetection. In this work, high-quality SnPS₃ crystals were synthesized via the chemical vapor transport method and then exfoliated via liquid-phase exfoliation method for being utilized as active materials in the PEC-type photodetectors. The device exhibited excellent self-powered response and a broadband detection range from 400 nm to 900 nm in an acidic environment. Under simulated sunlight illumination, it achieved a photocurrent density of 31.2 μA cm⁻², responsivity of 195 μA W⁻¹, with the rise and fall times of 75 and 91 ms, respectively. The best photoelectric response performance appeared under 400 nm light excitation, with a photocurrent density and responsivity of 11.04 μA cm⁻² and 175.19 μA W⁻¹, respectively. Furthermore, after approximately 6200 s of long-term cycling test and 66 days of air stability test, the detector’s photocurrent density retention rates were of 89.23% and 81.05%, respectively. This work implies the significant potential of SnPS₃ for being hired in the field of self-powered broadband photodetection.
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GREEN CHEMISTRY
·
2026
·
IF 10.6
Wujiao Tan,Wenhao Yang,Dan You,Yiwei Yu,Ao Yan,Li Zhang,Xue Li,Ziyi Zhu,Yiyong Zhang
Aqueous zinc-ion batteries present several advantages, including high safety and low cost. However, severe dendrite growth and side reactions at the zinc anode significantly impede their cycle life and efficiency. This study proposes a zinc deposition regulation strategy based on a synergistic “chelation-relay” mechanism achieved by constructing a phthalocyanine functional layer on the surface of a cellulose separator. The phthalocyanine layer, which is rich in nitrogen coordination centers, effectively chelates Zn2+, reshaping the electrode/electrolyte interface structure and inhibiting side reactions. Its macrocyclic conjugated architecture functions as an “ion relay”, facilitating reversible storage and providing ordered migration channels for Zn2+, thereby alleviating concentration polarization and promoting uniform deposition. COMSOL simulation results demonstrate that this functional layer can homogenize the interfacial electric field and Zn2+ flux, thereby suppressing the “tip effect” associated with dendrite formation. Consequently, stable zinc deposition and stripping over 1000 cycles under conditions of 1 mA cm−2 and 1 mAh cm−2 yield an average coulombic efficiency of 99.1%. Furthermore, the Zn/I2 full cell exhibits a capacity retention rate of 98.83% after 10 000 cycles at a discharge rate of 1 A g−1. These findings underscore the potential of phthalocyanine to regulate zinc deposition, contributing to the development of high-performance aqueous zinc-ion batteries.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·122093
·
IF 7.5
Qian Wu,Guo Feng,Feng Jiang,Xiaojun Zhang,Yanqiao Xu,Jianmin Liu,Jian Liang
Magnesium aluminate (MgAl 2 O 4 ) spinel with dominant (400) plane exposure was synthesized by tailoring the precursor structure using a nonhydrolytic sol-gel method (NHSG). The effects of magnesium source and aluminum source on the preferential growth and morphology of MgAl 2 O 4 were systematically investigated. Rietveld refinement was used to analyze the structural variations of the prepared MgAl 2 O 4 . Furthermore, Density Functional Theory (DFT) calculation was performed to determine the adsorption energies of Congo red on the (311) plane and (400) plane. Results demonstrate that uniform MgAl 2 O 4 petals with a length of 240–280 nm were prepared using Mg and Al respectively as magnesium source and aluminum source, exhibiting a significantly enhanced I 400 /I 311 ratio of 2.459. This higher I 400 /I 311 ratio indicates a greater proportion of well-defined petals and corresponds to enhanced adsorption capacity. The MgAl 2 O 4 precursor, synthesized through polycondensation of MgAl 2 (OC 2 H 5 ) 8 prepared from metallic Mg and Al, exhibits an atomic arrangement analogous to the (400) plane of MgAl 2 O 4 spinel, facilitating its crystallization into (400)-dominant MgAl 2 O 4 petals. DFT calculations further reveal that the (400) plane of MgAl 2 O 4 exhibits a stronger adsorption energy to Congo red (CR) (-3.86 eV) than the (311) plane (-0.88 eV), consistent with the experimental results. This work provides a novel method for special crystal plane exposure.
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NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Chengzheng Ye,Jiaming Song,Xin Zhao,Zijuan Ma,Jialong Ma,Yawen Liu,Shanbo Cui,Zhuo Wang,Guoshuai Ban,Feng Teng,Peng Hu,Haibo Fan
Nb₂SiTe₄, a layered narrow-bandgap van der Waals semiconductor, has been attracting more and more attention due to its high carrier mobility and excellent optical absorption properties. In this study, we exploited this material in the photoelectrochemical type photodetector (PD) to investigate its potential for energy saving optoelectronics. A simple high-temperature solid-state reaction method was utilized for synthesizing high quality Nb₂SiTe₄ crystals, and liquid-phase exfoliation was employed to prepare the corresponding nanosheets for the device construction. The photoelectric performances of the Nb₂SiTe₄ nanosheet PDs were characterized in a three-electrode system and broad spectral responses ranging from 400 to 900 nm were detected. The effects of dispersants, electrolyte, as well as light power density on the device performance were systematically investigated. At 0 V bias voltage, an optimal performance of the PDs was obtained in acidic testing environment upon illumination of the 400 nm light, and the highest photocurrent density of 0.72 μA cm⁻² and responsivity of 7.71 µA W⁻¹ were achieved. Besides, the device demonstrated fine long-term cycling and air stabilities. This work implies the potential of Nb₂SiTe₄ for being applied in broadband photodetection of self-powering devices.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 9
·6015-6024
·
IF 3.9
Li Zhi-Yue,Li Long-Xiang,Xie Yi-Qin,Sun Hui,Lu Si-Rong,Bao Chun-Hao,Zhang Han,Chen Ting-Yong
Two-dimensional materials are attractive in electronics, energy and optics due to their fascinating physical properties. Appropriate fabrication methods and optimized process parameters are critical for improving crystal quality and achieving precise control over the structure and properties of these materials. Here, 2H-NbSe 2 single crystals were synthesized via a chemical vapor transport (CVT) process using iodine as the transport agent in a dual-zone tube furnace. The structural, chemical compositions, electrical, and magneto-transport properties of the synthesized crystals were comprehensively investigated. X-ray diffraction (XRD) and transmission electron microscopy (TEM) confirmed that the crystals were well-crystallized in a single-phase hexagonal lattice configuration, consistent with the typical van der Waals layered characteristics. The Raman spectra displayed characteristic peaks for NbSe 2 . The atomic ratio of Nb: Se in the crystals was approximately 1:2. The residual resistivity ratio ( RRR ) value (18), transition temperature ( T C ≈ 7 K) and transition width (Δ T ) of 0.26 K obtained from temperature-dependent resistance measurements indicate good crystal quality. Magneto-transport measurements revealed a distinct anisotropy between in-plane and out-of-plane magnetic field directions, resulting in typically different upper critical fields ( H c 2 ). This work presents a straightforward and effective iodine-assisted CVT method for growing high-quality NbSe₂ crystals, offering fundamental and technological significance for the growth and application of two-dimensional materials.
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