SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2018
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IF 2.88
Wenzhi Wang,Yingwei Zhang,Yuejun Liu,Yuehui He
Hypochlorite (ClO − ), as a momentous reactive oxygen species (ROS), is highly desirable due to it associated with a number of human diseases. Therefore, the development of simple and convenient water-soluble ratiometric fluorescent probes is of great significance. In this work, water-soluble ratiometric fluorescent polymer dots (FPDs) for detecting ClO − were prepared via incorporation of reversible addition-fragmentation chain transfer radical polymerization (RAFT), grafting technique and coprecipitation strategy. Upon the addition of ClO − , due to the intramolecular heavy atom effect (HAE) by chlorine (Cl), the fluorescence of fluorescein units in FPDs was significantly quenched, while another reference fluorophore (P2) in FPDs keeps constant. Furthermore, the FPDs exhibited excellent sensitivity (detection limit: 2.2 nM) and selectivity, good water-solubility. In addition, FPDs was successfully utilized to detect ClO − in tap water and drink water. It implies that the nanoprobes have the great potential applications in biological sensing and imaging.
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INDOOR AND BUILT ENVIRONMENT
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2025
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IF 2.9
Pengfei Zhang,Wenjian Han,Bo Zhou,Haiqian Zhao
The metal-organic framework MIL-100(Fe) is a novel humidity-regulating material, but it has poor water vapour desorption performance. To address this issue, MIL-100(Fe) was modified using 20% lithium chloride (LiCl), forming stable coordination bonds through ion-dipole interactions. These bonds attract water molecules, enhancing the adsorption capacity and improving the structural stability of the material. After modification, its moisture capacity was increased by 2.42 times, and the desorption amount was increased by 7.22 times, with an overall improvement in moisture adsorption–desorption equilibrium. However, the use of inorganic salts presents a leakage problem in high-humidity environments. To counter this, a 3% ethyl cellulose (EC) coating was applied to the modified MIL-100(Fe). Through surface interactions, this modification improved the material's adsorption performance in non-polar environments, preventing deliquescence in long-term high-humidity conditions. The hydrophobic angle of the modified composite material reached 93°, making the surface hydrophobic. The moisture capacity of the composite material was 1.83 times that of the pure MOF, and the desorption amount was increased by 5.2 times, significantly enhancing the material's environmental humidity regulation performance. Additionally, the material demonstrated good reusability, extending its lifespan, making it suitable for use as an intelligent humidity control material in construction.
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Materials
·
2025
·Vol. 18
·期 6
·1343
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IF 3.2
Hangmin Xu,Hao Song,Xiaozhi Wang,Xingwang Zhu
The substantial release of industrial carbon dioxide has been identified as a key factor in the development of various environmental issues. In addressing these concerns, the utilization of photocatalytic technology for carbon reduction has garnered significant attention. The disadvantage of CO2photoreduction is the problem of product yield and selectivity. It is known that MIL-125(Ti) with a high specific surface area (SBET) possesses more active sites using Ti as a node. The calcination of MIL-125(Ti) in a reducing atmosphere has been shown to introduce oxygen vacancies (OV), thereby enhancing the material’s surface and internal pores. This process has been demonstrated to result in a significant increase in the SBETand an enhancement of the Ti3+/Ti4+ratio. The increased Ti3+centers have been found to improve the material’s reducing properties. The results demonstrate that the OV-rich MIL-125-2H material exhibits the high-performance and highly selective photoreduction in CO2.
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PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·Vol. 50
·期 17
·30579-30586
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IF 5.1
Cheng Wang,Yangmin Tang,Guiqiang Pu,Wei Chen,Mingxue Deng,Jiacheng Wang
Ultraviolet C (UVC) light has a great promising application in the field of sterilization. However, how to obtain efficient UVC emission with peak maximum at 265 nm that is called ‘golden sterilization wavelength’ remains a great challenge. Herein, we propose a defect-engineering strategy to obtain enhanced UVC emission at the golden sterilization wavelength of 265 nm through introducing oxygen vacancies into Pr 3+ doped Ba 2 MgSi 2 O 7 melilite phosphors. Combined with X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR) and thermoluminescence (TL) characterizations, it is confirmed that the calcination of Ba 2 MgSi 2 O 7 :Pr 3+ in an inert atmosphere could efficiently increase oxygen vacancy concentration, promoting the efficient energy transfer from the melilite host to Pr 3+ ions. It could lead to a significant enhancement of the luminescence intensity to 2.43 times of the initial one with less oxygen vacancies . The optimized Ba 2 MgSi 2 O 7 :0.4%Pr 3+ phosphor could effectively inactivate 100 % of Staphylococcus aureus within 8 min, showing higher efficiency than commercially available mercury lamp. This work provides an effective solution for the design and preparation of UVC phosphors using defect engineering to achieve golden UVC emission.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Yuqi Zhu,Rongbo Li,Zemin Li,Yawei Gu,Rujing Hou,Yichang Pan
Eight silane coupling agents are grafted onto MIL-100(In) membranes for TOL/MCH pervaporation. • Cyclohexyl-configured silane with amine group enables superior TOL/MCH recognition. • Configurational effects maximize binding energy difference, boosting separation factor by 175%. • Two-stage process achieves flux of 402 g·m −2 ·h −1 and separation factor of 8.1. Hydrogen is recognized as a promising green energy carrier, yet its large-scale transportation remains a critical challenge. Toluene/methylcyclohexane (TOL/MCH) serves as a safe and cost-effective liquid organic hydrogen carrier (LOHC), but practical deployment is constrained by inefficient post-dehydrogenation separation. Membrane-based separation offers a potential solution; however, most existing membranes lack sufficient molecular discrimination capability for these two analogues. In this work, MIL-100(In), a metal-organic framework with intrinsic adsorption selectivity toward TOL and MCH, was selected as the membrane substrate. A series of silane coupling agents with and without amino functionality and varying molecular configurations were grafted onto the membrane surface. Remarkably, the three-dimensional saturated cyclohexyl configuration outperforms the planar phenyl group in molecular discrimination among the amino-bearing silanes, overturning the conventional preference for aromatic functionalities. As a result, the separation factor of the MIL-100(In) membrane is enhanced by 175% upon surface modification. Complementary molecular simulations reveal that the spatial configuration of the grafted silane governs the recognition behavior toward aromatic and cycloalkane molecules, as corroborated by binding energy analysis and the minimum intermolecular contact distances obtained from energy-minimized conformations. These findings provide a mechanistic basis for tailoring membrane surface chemistry toward efficient LOHC separation Download: Download high-res image (333KB) Download: Download full-size image
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Jingli Zhai,Wanting Li,Xinyu Zhang,Qian Zhang,Xiaoqiang Liu,Ruifeng Chong,Caixia Feng,Yan Wang,Danny K.Y. Wong,Yanmei Zhou
Herein, a bimetallic zinc-cobalt metal-organic framework (ZnCoMOF) microsphere cluster with abundant oxygen vacancies was rationally designed and synthesized for visible-light-driven photocatalytic CO 2 reduction. XPS results reveal that the substitution of Co 3 + by Zn 2+ modulated the electronic structure of Co sites, reduced the Co 3+ /Co 2+ ratio, and generated electron-rich Co 2+ centers as well as oxygen vacancies. The reversible Co 3+ /Co 2+ redox pair accelerates charge migration, while oxygen vacancies inhibit carrier recombination. Moreover, electron-enriched Co 2+ favor CO 2 activation. The synergistic effect of multiple active centers optimizes reaction kinetics and catalytic performance. The optimized Zn 0.3 Co 1 MOF delivered a CO yield 2.21 times as high as that of pristine CoMOF, reaching 5.33 mmol g −1 within 4 h, and it achieved an ultrahigh CO selectivity of 100%. The enhanced performance benefits from Zn-induced electronic modulation and synergistic catalysis. Notably, in a diluted CO 2 atmosphere, the product composition exhibits an obvious transition from CO to CH 4 with the decrease in CO 2 concentration. Lower CO 2 concentration contributes to a higher CH 4 yield and greater CH 4 selectivity in the products. Under 20% CO 2 atmosphere, the CH 4 production reached 0.36 mmol g −1 within 4 h with an ultra-high CH 4 selectivity of 100%. These results indicate that in the Zn x Co 1 MOF-catalyzed CO 2 reduction system, product selectivity can be readily modulated by adjusting CO 2 concentration. This offers a facile strategy for the efficient utilization of low-concentration CO 2 from industrial flue gas. Download: Download high-res image (394KB) Download: Download full-size image
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Peng Zhao,Kai Liu,Yueyan Li,Xiaofang Ban,Yuheng Wu,Jiaqi Liu,Xiaohong Wu,Ziyi Cheng,Fan Wang,Shuo Li,Feng Lin,Huifang Tang,Qingnan Zhao
The excessive activation of sympathetic nerve is closely related to cardiovascular diseases (CVDs). In this study, we developed a novel MIL-100(Fe)@Ag surface-enhanced Raman scattering (SERS) substrate for the simultaneous and effective detection of plasma norepinephrine (NE) and adenosine—two pivotal sympathetic hormones. The microscopic morphology and crystal structure of the substrate were characterized using techniques such as transmission electron microscope (TEM) and X-ray diffraction (XRD). Mechanistically, the HOMO-LUMO energy levels of the detection molecules were calculated using Gaussian. The substrate realized a dual SERS enhancement mechanism through the synergistic effect of localized surface plasmon resonance and interfacial charge transfer. Consequently, the MIL-100(Fe)@Ag platform exhibited high-sensitivity quantitative detection capabilities for NE and adenosine: the detection limit for NE is 0.596 nmol/L; the detection limit for adenosine is 0.24 nmol/L. Crucially, when applied to patients with pheochromocytoma—a neuroendocrine tumor characterized by plasma catecholamine surges, this method achieved robust and stable detection of plasma NE. It offered comparable diagnostic accuracy to conventional mass spectrometry while significantly reducing analysis complexity. Therefore, this innovative strategy may hold great promise for the long-term, decentralized monitoring of sympathetic nerve activity in populations at risk for CVDs or related clinical disorders.
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INTERNATIONAL JOURNAL OF HUMAN-COMPUTER INTERACTION
·
2023
·
IF 4.7
Xiaosong Qian,Sa Li,David Michael Sirkin
As the navigation interface of fully autonomous vehicles (FAV) will be wholly dependent on On-board Navigation Systems (ONS), it is foreseeable that ONS will replace steering wheels as the primary control mode of future FAVs. Thus, the ease of setting precise destinations using ONS may become a key factor affecting FAV user acceptance. A survey (N = 200) comprising Navigation Anxiety Questionnaire and User Preference Questionnaire reveals the user’s acceptable measurements of distance error and execution time when navigating FAVs in six common situations. Subsequently, an in-vehicle simulation test (N = 24) found most participants in the simulation test performed worse than the user’s acceptable measurements obtained through the questionnaire survey, which indicated that the existing ONS failed to meet users’ expectations for the FAV navigation experience. Findings of the questionnaire survey and the simulation test reveal a severe “last-100 meters” issue when controlling FAVs by ONS, and that destination familiarity, gender difference, text input behavior, map scale, and map display mode should be seriously considered when designing ONS for FAV control.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 10
·4806-4813
·
IF 3.925
Jie Song,Leilei Sun,Hongchao Geng,Wenlong Tan,Deshuai Zhen,Qingyun Cai
β-Phase NaYF4:Yb,Tm,Gd up-conversion nanorods (UCNRs) with high uniformity were synthesized by a solvothermal method. The optimal fluorescence intensity of UCNRs was explored. After further modification with Materials of Institute Lavoisier-100(Fe) (MIL-100(Fe)) by the layer-by-layer self-assembly method, near-infrared light-triggered UCNR@MIL-100(Fe) nanomaterials with excellent antibacterial performances were constructed. A core–shell structure was constructed and confirmed by transmission electron microscopy (TEM). Reactive oxidizing species (ROS) detection indicated that the nanomaterials owned good photodynamic efficacy. The antibacterial experiments showed that the nanomaterials with 980 nm light irradiation and hydrogen peroxide (H2O2) had good antibacterial activity against Gram-negative and Gram-positive bacteria. Under 980 nm laser excitation, UCNRs generated ultraviolet and visible light to activate MIL-100(Fe) and induced a photo-Fenton reaction, which further produced oxygen species for antibacterial applications.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·
IF 5.816
Chengbao Liu,Dongchen Shen,Zhengkai Tu,Song Li
Li + doping is regarded as an effective strategy to enhance the room-temperature hydrogen storage of metal-organic frameworks (MOFs). In this work, Li + is doped into both MIL-100(Fe) and MIL-100(Fe)/graphene oxide (GO) composite, and it is demonstrated that the hydrogen uptake of Li + doped MIL-100(Fe)/GO (2.02 wt%) is improved by 135% compared with Li + doped MIL-100(Fe) (0.86 wt%) at 298 K and 50 bar, which is ascribed to its higher isosteric heat of adsorption (7.33 kJ/mol) resulting from its more accessible adsorption sites provided by doped Li + ions and ultramicropores. Grand canonical Monte Carlo (GCMC) simulation reveals that Li + ions distributing in the interface between MIL-100(Fe) and GO within MIL-100(Fe)/GO composite is favorable for hydrogen adsorption owing to the increased number of adsorption sites, thus contributing to the enhanced hydrogen storage capacity. These findings demonstrate that MIL-100(Fe)/GO is a more promising Li + doping substrate than MIL-100(Fe).
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Journal of Cleaner Production
·
2021
·
IF 9.297
Ning Zhang,Xianglin Hou,Xiaojing Cui,Lin Chai,Hongyan Li,Hui Zhang,Yingxiong Wang,Tiansheng Deng
Plastic waste is increasingly aggravating environmental pollution problems. Unsaturated polyester resin is one kind of thermoset resins . Its three-dimensional network endows it good mechanical and chemical properties, but made its degradation and recovery challenging. Here we report a novel and efficient reaction system consisting of amphiphilic p-toluenesulfonic acid/acetic acid aqueous solution for decomposition of unsaturated polyester resin by acyl exchange reaction. Amphiphilic p-toluenesulfonic acid facilitated the entrance of itself and solvent into the resin and consequently promoted catalytic cleavage of ester bonds in unsaturated polyester resin. Water, as a co-catalyst, stabilized the key reaction intermediate species, which reduced largely the overall reaction activation energy and thus accelerated the degradation of the resins. Unsaturated polyester resin was completely degraded and converted to the valuable chemicals at 180 °C, which can be then recycled by a new separation process. The degradation products were mainly ethylene glycol diacetate, phthalic acid, and copolymer products of styrene and maleic anhydride, with the mass ratio of 43.18%, 24.81% and 44.16% to raw unsaturated polyester resin waste, respectively. The atoms of unsaturated polyester resin were completely incorporated into the high-value degradation products with zero production of waste. Hence, this work provides a green, economical, practical strategy to degrade waste unsaturated polyester resin and recycle high-value chemicals with an 100% atom utilization efficiency.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Weifeng Li,Tao Zhang,Li Lv,Yanxiao Chen,Wenxiang Tang,Shengwei Tang
A novel strategy of room-temperature synthesis of MIL-100(Fe) with organic amine as deprotonating agent was proposed. The as-prepared solid product was denoted as R-MIL-100(Fe). The material was systematically characterized via XRD , FT-IR, XPS and SEM. The effects of operation parameters such as initial fluoride concentration, reaction time, initial pH and co-existing anions on the fluoride adsorption performance of the synthesized R-MIL-100(Fe) were studied. The maximum fluoride adsorption capacity of R-MIL-100(Fe) was as high as 23.53 mg/g at 298 K in the fluoride solution. The results indicate that the adsorption process of fluorine on R-MIL-100(Fe) belongs to surface adsorption and intraparticle diffusion . An excellent fluoride adsorption performance of R-MIL-100(Fe) was observed in a wide pH range of 4–10. The co-existing anions including Cl - , NO 3 - and SO 4 2- almost had no negative effects on the adsorption performance of R-MIL-100(Fe). However, the present of CO 3 2- or HCO 3 - brought an obvious reduction of F - adsorption capacity of R-MIL-100(Fe). Thermodynamic study results illustrate that the adsorption process was an exothermic chemisorption . Chemical combination of iron and fluorine was confirmed by FT-IR and XPS. The strong combination brings the excellent F - adsorption performance of MIL-100(Fe). R-MIL-100(Fe) was successfully regenerated and recycled five cycles with an excellent regeneration ability and recyclability.
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