CORROSION SCIENCE
·
2024
·
IF 7.4
Chunchao Chen,Xiang Gao,Boyu Yuan,Chao Wang,Juan Qiu,Kangwei Gongsun,Ke Lu,Houyi Ma
A smart means to achieve the harmless treatment of corrosive Cl – have been proposed for protecting brass. In this method, intelligent self-healing nanofilms based on the interlayer anion exchange properties of LDHs in situ grow on brass surfaces. The Cl – ions replace the BTA – loaded between LDHs interlayers to induce self-healing, as the binding energy of Cl – is lower than that of BTA – , obtained from theoretical calculations. The simultaneous application of electrochemistry and digital holography technologies confirmed that the constructed film has high instantaneous corrosion inhibition efficiency (99.9 %), long-lasting corrosion resistance, and self-healing ability (50 days).
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JOURNAL OF MOLECULAR STRUCTURE
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2024
·
IF 4
Shaopeng Zhang,Jie Ding,Dayong Tian,Jing Wang,Jiale Zhang,Minghua Lu
China faces severe antimony pollution due to long-term, high-intensity mining and smelting operations. Long-term exposure to Sb(III) can lead to chronic respiratory problems. Adsorption method is used to remove Sb(III) because of its simplicity, economy and high efficiency. Therefore, a novel MIL-101(Fe)-Cl/SA hydrogel with oxidation-sorption bifunctionality was developed. 1602 cm −1 and 1025 cm −1 correspond to N H and S = O indicate N-chlorosulfonamide is bonded to MIL-101(Fe)-Cl/SA. MIL-101(Fe)-Cl/SA exhibited rough and wrinkled surfaces with numerous irregular particles by SEM. The presence of O (22 %) and Cl (2 %) confirmed the incorporation of N-chlorosulfonamide and SA into MIL-101(Fe)-Cl/SA by EDS and mappings. The adsorption capacities of MIL-101(Fe)-Cl/SA were 86 mg/g at 298 K and 123.21 mg/g at 328 K by Langmuir model. Kinetic and equilibrium correspond to pseudo-second-order and Langmuir model, respectively. Adsorption was spontaneous and endothermic by thermodynamic analysis. MIL-101(Fe)-Cl/SA exhibited enhanced selectivity in solution containing various ions. Moreover, MIL-101(Fe)-Cl/SA demonstrated potential for regeneration and reuse. The removal process primarily involved oxidation, electrostatic interaction, and complexation. In summary, the capability of MIL-101(Fe)-Cl/SA to adsorb and oxidize Sb(III) underscores its promising potential in mitigating the hazards associated with Sb(III).
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yao Tang,Chunyan Fan,Zehao Zang,Yahui Cheng,Lanlan Li,Xiaofei Yu,Xiaojing Yang,Zunming Lu,Xinghua Zhang,Hui Liu
Producing hydrogen through water electrolysis represents a clean and sustainable solution that is crucial in addressing the energy crisis. Nonetheless, the slow process of water electrolysis leads to large different kinetics for hydrogen evolution reaction (HER) under different pH solutions. Here, we designed surface modified metallic X-Cu catalysts (X = F, Cl, Br) with different non-metallic elements on nickel foam (NF) using an electrochemical deposition method, which realizes high performance for all-pH range. In 1.0 M KOH, 1.0 M phosphate-buffered saline (PBS), and 0.5 M H 2 SO 4 media, F-Cu catalyst reaches 10 mA cm −2 with overpotentials of 56 mV, 110 mV, and 197 mV, respectively. Theoretical calculations disclose that the surface modification of F atom leads to redistribution of electrons, causing an upward shift of Cu’s d-band center and enhanced adsorption ability for H 2 O and H intermediates (H*). This work offers novel perspectives for designing Cu-based catalysts with high HER performance, making them applicable across all-pH conditions.
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Nanoscale
·
2025
·
IF 5.1
Rong Wu,Yansong Yue,Aosheng Zhang,Jing Wei,Fangze Liu,Hongbo Li
Metal halide perovskites are promising materials for next-generation X-ray detectors. Among these materials, CsPbBr3 single crystals (SCs) exhibit high environmental stability, low defect density and high X-ray absorption coefficient, demonstrating excellent X-ray detection performance. However, ion migration in CsPbBr3 induces dark current drift, leading to degraded photocurrent and increased detection limit. Doping CsPbBr3 SCs with mixed halide has emerged as an effective strategy to suppress ion migration, increase resistivity and improve detection sensitivity. In this study, we synthesized lightly doped mixed-halide perovskite CsPb(Br1−nXn)3 (X = Cl, I) SCs with high crystallinity and compositional uniformity using the inverse temperature crystallization method and systematically studied hole and electron transport properties. Our findings indicate that the dark current primarily arises from hole current driven by ion migration associated with halide vacancies. Both chlorine and iodine doping suppress ion migration, with iodine doping exhibiting the best inhibiting effect. With low work function contacts, electron dark current is substantially reduced due to the elimination of hole contributions, and the dark current drift is effectively suppressed. Electron transport dynamics were further explored through α-particle spectroscopy. Analysis of α-particle spectra and carrier transit times revealed that chlorine doping enhances the μ-τ product and charge collection efficiency, whereas light iodine doping results in reduced μ-τ product and slower charge transport. Overall, halide doping combined with contact engineering demonstrates that mixed-halide perovskites hold significant promise for developing high-performance X-ray detectors.
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DESALINATION
·
2025
·
IF 9.8
Hailin Chang,Shilei Fu,Ziao Zhang,Yating Hu,Zijian Cui,Jun Ma,Kexin Hou,Xiaobin Tang,Guibai Li,Heng Liang
Nanofiltration (NF) membranes with efficient selectivity are critical for addressing water source pollution from toxic heavy metals and emerging micropollutants. Herein, we engineered a polyamide (PA) NF membrane with ambidextrous selectivity by leveraging the concentration-driven effect of piperazine (PIP) during interfacial polymerization (IP). This PIP concentration-driven effect was verified by modulating the PIP concentration gradient from low to high, which enhanced IP efficiency via both an intensified alkaline reaction environment and concentration-driven diffusion. The optimized NF membrane features an ultrafine pore size distribution and reduced electronegativity, exhibiting a remarkable shift from sole SO 4 2− /Cl − selectivity to impressive ambidextrous selectivity, encompassing both SO 4 2− /Cl − (α ≈ 48, 98.3 % for Na 2 SO 4 ) and Mg 2+ /Na + (α ≈ 37, 98.2 % for MgCl 2 ). Moreover, it membrane also achieved exceptional removal efficiencies of 94.8–98.9 % for heavy metals and 77.6–99.3 % for antibiotics, while maintaining a water permeability of 19.3 L/m 2 h bar and mitigating the perm-selectivity trade-off. When purifying surface water containing heavy metals and antibiotics, the optimized NF membrane exhibited superior multi-pollutant removal and improved water production quality compared to the NF270 and NF90 membranes, and especially with its water permeance increased by ~27 % to 179 %. Our work uncovers a fundamental correlation between the PIP concentration, IP reaction, PA nanostructures and NF performance, providing valuable insights into customizing high-performance NF membranes to address complex water pollution challenges.
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LUMINESCENCE
·
2025
·Vol. 40
·期 4
·e70175
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IF 3
Jiaoyan Xie,Suqin Han
Folic acid (FA) is a crucial B vitamin for cell formation and maintenance, and its deficiency can lead to severe health disorders, highlighting the importance for accurate FA detection. Chemiluminescence (CL) provides a highly sensitive analytical approach, characterized by simple instrumentation, high accuracy, and low background interference. However, traditional CL techniques are often limited by weak signal intensity and poor robustness. This study presents a novel CL system using well-defined fluorescent Cl, S, N co-doped carbon dots (ClSN-CDs) integrated into the H 2 O 2 -KBrO 3 system. Under acidic conditions, the synergistic effect of H 2 O 2 and KBrO 3 induced ClSN-CDs to emit a strong CL signal, with the emitting species identified as excited-state ClSN-CDs. Trace amounts of FA significantly quenched the CL intensity of the ClSN-CDs-H 2 O 2 -KBrO 3 system, enabling rapid, sensitive, and selective FA detection. The system demonstrated a linear response to FA concentrations ranging from 0.02 to 1.0 μM, with a detection limit of 3.1 nM. Selectivity and recovery studies validated the system's robust analytical performance. Mechanistic investigations revealed that the CL reaction involved reactive oxygen species (ROS), and FA-mediated ROS consumption led to luminescence suppression.
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Environmental Science-Processes & Impacts
·
2025
·
IF 3.9
Xiaomin Ren,Jianying Wang,Fenqing Zhao,Pingping Zhang,Huan He,Zhixiang Xu,Bin Huang,Xuejun Pan
Previous studies have indicated that 6:2 chlorinated polyfluoroalkyl ether sulfonate (6:2 Cl-PFAES), a substitute for perfluorooctane sulfonate (PFOS), caused disruptions in glucose metabolism, but its toxicological mechanisms remain unclear. Pancreatic β cells are responsible for regulating glucose metabolism. This study used mouse insulinoma β cells (β-TC-6) to study the toxic effects of 6:2 Cl-PFAES and elucidate its potential mechanisms. Through cell counting kit-8, trypan blue staining, and apoptosis assays, we found that 6:2 Cl-PFAES showed toxicity to β-TC-6 cells, even surpassing that of PFOS. Mechanistic studies demonstrated that 6:2 Cl-PFAES induced oxidative stress by ascendant levels of reactive oxygen species (ROS) and malondialdehyde (MDA), alongside increased superoxide dismutase (SOD) activity. The oxidative stress-inducing capability of 6:2 Cl-PFAES was stronger than PFOS. Co-exposure with N-acetyl-L-cysteine (NAC), as the ROS scavenger, which obviously reduced the degree of cell apoptosis and the production of ROS, highlighting oxidative stress as a crucial mechanism of 6:2 Cl-PFAES-induced cell death. Transcriptomic analysis further revealed that 6:2 Cl-PFAES affected genes association with the oxidative phosphorylation pathway, confirming the oxidative stress effect, and altered diabetes-related genes expression, suggesting a heightened risk of diabetes. This study provides insights into the toxicity of 6:2 Cl-PFAES on β cells and its potential risks on glucose metabolism disruption.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jiaxin Yao,Feng Gao,Yi Zhao,Yajie Tian,Xin Yu,Yanting Tang
Fabricating semiconductor photocatalysts with abundant oxygen vacancies and porous structures contributes to charge separation and surface photocatalytic degradation reactions. In this work, porous Cl-Nb 2 O 5-x nanostructures were synthesized via a calcination method using NbCl 5 as the niobium and chlorine sources to achieve efficient tetracycline degradation under visible-light irradiation. Porous Nb 2 O 5-x nanostructures were formed during the calcination process accompanied by the generation of oxygen vacancies. The obtained Cl-Nb 2 O 5-x samples demonstrated significantly enhanced photocatalytic performance compared to commercial Nb 2 O 5 . The synthesized Cl-Nb 2 O 5-x -450 sample exhibited the highest photocatalytic performance, achieving a maximal rate constant of 0.03093 min −1 , which markedly surpassed that of commercial Nb 2 O 5 . The remarkable enhancement in tetracycline degradation of the Cl-Nb 2 O 5-x photocatalysts was mainly attributed to the generation of oxygen vacancies and porous structures with large surface areas. Finally, the photodegradation pathways of tetracycline facilitated by the Cl-Nb 2 O 5-x photocatalysts and a plausible photocatalytic mechanism of the Cl-Nb 2 O 5-x photocatalysts were also investigated in this work.
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CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Wei Shen,Zhihua Chen,Junmin Xia,Jiayu Jiang,Yanfeng Chen,Yanxing He,Hao Cui,Wei Zhao,Suyun Liu,Shufen Chen
The soft ionic nature, tunable lattice structure, variable component, and solution processability make metal halide perovskite (MHP) materials good candidates as high-entropy materials. Although composition regulation of the X site can be easily achieved by mixing two types of halogens, it remains challenging to prepare high-entropy MHP (HEMHP) with three types of halogens due to the large octahedral factor (μ) difference of [PbX6]4–. Fundamental research is explored to synthesize HEMHP incorporating Cl–, Br–, and I– via μ regulation engineering, which breaks the limitation of a 6% Cl/I ratio in perovskite to achieve 116%. Doping AlCl3 in CsPbBrI2 could successfully reduce the μ differences for [Pb1–aAlaX6](4–a)–, shorten the Pb–X bond length, and enhance the Pb–X bond energy via the Al–X covalent bond. Therefore, the crystal distortion and halogen ion migration could be inhibited to form a homogeneous HEMHP, such as Cs1.18Pb0.92Al0.08(Cl0.13Br0.51I0.36)2.45L–0.81, Cs1.12Pb0.88Al0.12(Cl0.25Br0.49I0.26)2.53L–0.71, and Cs1.06Pb0.85Al0.15(Cl0.29Br0.46I0.25)2.43L–0.78. Such μ regulation engineering method is feasible and universal to use other metal ions (Zn2+, Mn2+, and In3+) to synthesize single-phase HEMHP. Furthermore, the optical band gap and emission peak wavelength for HEMHP and MHP are linearly dependent on their lattice distances, which is the intrinsic characteristic for composition-depended perovskite.
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Journal of Environmental Chemical Engineering
·
2025
·Vol. 14
·期 1
·120487
·
IF 7.2
Jifang Zhang,Chengcheng Suo,Hongru Zhang,Wei Li,Sha Luo,Bing Tian,Chunhui Ma,Shouxin Liu
Constructing an efficient and low-cost electrocatalyst was highly necessary in electrocatalytic lignin depolymerization study. We prepared a unique 1D/2D/1D nanoflower electrocatalyst (Ti 20 @ZIS-Sv@C 0.5 (Ⅱ)) composed of TiO 2 , ZnIn 2 S 4 and C nanosheets by electrostatic self-assembly through solvothermal method. The TiO 2 was located as the core of catalyst and covered by the C deposited ZnIn 2 S 4 nanosheets. The electrochemical impedance (R ct , 248.5 Ω; R L , 6.511 Ω), C dl (1.75817 mF cm −2 ), Tafel efficiency (6.28 mV dec −1 ) and photocurrent intensity (5.23 μA) of Ti 20 @ZIS-Sv@C 0.5 (Ⅱ) exhibited higher electrocatalytic activity than that of original ZnIn 2 S 4 . Under optimized conditions, electrocatalytic process achieved 100 % C α -C β (β-O-4) and C Ar -O (α-O-4) cleavage efficiency and 244.37 mg g −1 benzaldehyde yield. We have further indicated C α -C β (β-O-4) and C Ar -O (α-O-4) cleavage mechanism by Cl-induced radical oxidation pathway. The electrocatalytic depolymerization of G-type lignin could obtained at least 14 molecular products (including 18.21 mg g −1 2-hydroxy-1-phenylethan-one, 11.39 mg g −1 pyrocatechol and 1.25 mg g −1 benzaldehyde). Mechanism investigation suggested the generation of chlorine radical (•Cl), followed by C-H activation and synergistic effect of Ti 20 @ZIS-Sv@C 0.5 (Ⅱ), leading to highly efficient lignin linkages cleavage. This work has developed an efficient electrocatalyst for lignin valorisation to produce aromatics via an electrocatalytic radical pathway.
研究领域:
电催化
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可再生能源
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材料科学
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绿色化学
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生物质高值化
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JOURNAL OF CHEMICAL RESEARCH
·
2020
·
IF 0.593
Zhenzhen Geng,Hong-yu Zhang,Guohui Yin,Yuecheng Zhang,Jiquan Zhao
The ionic liquid 1-methyl-3-(3-sulfopropyl)imidazolium chloride ([MIMPs]+Cl-) in combination with 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) and sodium nitrite (NaNO2) as a catalytic system demonstrates high efficiency in the one-pot two-step aerobic oxidative condensation of benzyl alcohols with 1,2-phenylenediamines to give benzimidazoles. Various benzimidazoles are obtained in good to excellent yields by this strategy.
研究领域:
有机化学
·
催化化学
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ANALYTICA CHIMICA ACTA
·
2021
·
IF 6.558
Linjie Wang,Xuechao Xu,Peng Liu,Mengzhu Wang,Xiangheng Niu,Jianming Pan
Abnormal levels of halide ions in drinking water have enormous threats to human health, and thus designing reliable and sensitive methods to quantify and distinguish these ions becomes extremely crucial. Herein, we develop a single-nanozyme colorimetric array based on target-induced differential surface passivation for the quantification and discrimination of Cl − , Br − and I − ions. Silver citrate (Ag 3 Cit) is designed as an oxidase mimic to efficiently catalyze the 3,3′,5,5′-tetramethylbenzidine (TMB) chromogenic reaction. When halide ions (Cl − , Br − and I − ) are present, due to their different precipitation interactions with the Ag(Ⅰ) entity in Ag 3 Cit, they can passivate the active surface of the nanozyme to various degrees, resulting in the inhibited TMB chromogenic reaction differentially. According to this principle, simple and efficient quantitative detection of Cl − , Br − and I − ions was achieved, with all the detection limits down to the nM level. By employing Ag 3 Cit as a single sensing element, a nanozyme catalysis-based colorimetric array was further established, and both individual and mixed ions were successfully distinguished by integrating the array with principal component analysis . Accurate identification of unknown samples was also verified via a double-blind protocol, indicating potential applications of the array in practice.
研究领域:
分析化学
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环境科学
·
生物医学工程
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