MICROCHEMICAL JOURNAL
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2026
·
IF 5.2
Guixia Wang,Yao Lei,Liqiang Yang,Zhuo Yang,Ruting Zheng,Xianming Liu,Min Wang
The phosphatase-like activity of UiO-66 was improved by introducing OMS. • UiO-66-OMS exhibited twice the catalytic activity of pristine UiO-66. • This enhanced activity results from enlarged pores and boosted Lewis acidity. • A sensitive colorimetric immunoassay was developed for the detection of CEA. UiO-66 with open metal sites (UiO-66-OMS) nanozymes were synthesized via defect engineering through the introduction of benzoic acid as a modulator during UiO-66 synthesis. As a monocarboxylic acid analogous to the organic ligand 1,4-benzenedicarboxylic acid (BDC), benzoic acid competes with BDC for coordination to Zr O clusters, thereby creating abundant coordinatively unsaturated open metal sites while preserving the crystal structure of UiO-66. Using 4-nitrophenyl phosphate ( p -NPP) as the model colorimetric substrate, UiO-66-OMS exhibited enhanced phosphatase-like catalytic activity, which was twice that of pristine UiO-66. Mechanistic investigations revealed that the increased activity stems from the enlarged pore size and specific surface area of the nanozyme, as well as its enhanced Lewis acidity. By employing UiO-66-OMS as an antibody label, a sensitive colorimetric immunoassay was developed for the detection of carcinoembryonic antigen (CEA), with a linear range of 10–400 ng/mL and a limit of detection of 1.17 ng/mL. This study offers a new strategy for the development of highly active MOF-based nanozymes. Download: Download high-res image (111KB) Download: Download full-size image
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Joule
·
2026
·
IF 37.1
Haipeng You,Jiahui Chen,Ruhong Li,Long Chen,Ke Wang,Yuxin Qiu,Jiaqing Jiang,Yiting Lin,Menglei Yao,Hongming Yang,Yuhang Li,Zhen Song,Xiulin Fan,Chunzhong Li
Commercial lithium-ion battery electrolytes rely heavily on expensive LiPF 6 , making electrolyte cost a growing concern for battery deployment. Here, machine learning was used to help select dimethylacetamide as the basic solvent for LiNO 3 to yield a low-concentration electrolyte (0.38 M). Remarkably, techno-economic analysis shows that this approach directly reduces the cost of the electrolyte by up to 37.1%. The electrolyte delivered a 4.65-V electrochemical window, an ionic conductivity of 3.34 × 10 −3 S cm −1 , and stable operation from −40°C to 50°C. Its Li 3 N/LiF-rich and inorganic-organic hybrid interphases enabled stable cycling of NMC811, graphite, and lithium-metal electrodes. A 1-Ah NMC811||graphite pouch cell retained 91.3% capacity after 500 cycles. As validated here, dilute electrolytes are expected to present an innovative solution for low-cost batteries.
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Xie Wancen,Pan Denghui,Wen Jiahui,Zhao Zexu,Zhou Yitong,Mei Xinyi,Luo Hongbing,An Xiaochan,Shen Lixue,Yu Qingjun,Jiang Li,Tang Peng
Replacing toxic solvents and petrochemical additives in poly(vinylidene fluoride) (PVDF) ultrafiltration (UF) membrane fabrication is essential for advancing sustainable membrane manufacturing. Herein, a greener fabrication route for PVDF UF membranes was developed by employing PolarClean as a green solvent and a nonionic deep eutectic solvent (NIDES) as a green additive at a relatively low temperature. The effects of PVDF concentration, NIDES dosage, and the support layer on phase inversion behavior as well as membrane properties were systematically investigated. The results showed that the NIDES acted as both a pore-forming agent and a surface chemical modifier. At an appropriate dosage, NIDES promoted pore formation and enriched functional groups on the membrane surface. However, excessive addition led to additive deposition and surface heterogeneity. The optimized membrane M5-8P-1DES achieved a pure water permeability of 1040 L m –2 h –1 bar –1 with a sodium alginate rejection of 96.8%. For mechanical property optimization, the support layer was utilized and the supported membrane further increased permeability to 2459 L m –2 h –1 bar –1 . Life cycle assessment showed that PolarClean and NIDES were mostly environmentally preferable to conventional materials. However, under realistic fabrication conditions, the PolarClean-based membrane showed higher impacts in most categories due to higher solvent demand and energy input. Green electricity analysis showed that onshore wind electricity markedly improved its environmental competitiveness, making it the lowest-impact option. This highlights the importance of low-carbon electricity for realizing the sustainability potential of PolarClean-based membrane fabrication. Overall, this study provides both a greener fabrication strategy for PVDF membranes and a clearer framework for assessing truly sustainable membrane manufacturing.
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ADVANCED MATERIALS
·
2023
·Vol. 35
·期 23
·2300116
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IF 29.4
Yaowu Li,Peiyan Sun,Jian Chen,Xiuling Zha,Xueqing Tang,Zhiwei Chen,Yanan Zhang,Shan Cong,Fengxia Geng,Zhigang Zhao
The introduction of metamaterials into electrochromic (EC) displays has recently inspired a great breakthrough in the EC field, as this can offer a variety of new attractive features, from a very wide gamut of colors to very fast switching times. However, such metamaterial-based EC displays still face significant constraints when developing from single electrodes to full devices, because other supportive components in devices, such as counter electrodes and electrolytes, significantly affect light propagation and the subsequent perceived color quality in metamaterial-based EC devices. Herein, a new, cost-effective device design structured around a new type of porous metamaterial is reported to circumvent the critical problem in metamaterial-based EC displays. Owing to its unique design, the metamaterial-based EC device achieves good color quality with no drop in brightness or shift in color chromaticity when compared with a single electrode. Moreover, the porous-metamaterial-based EC device can exhibit non-iridescence and be viewed from a wide range of angles (5°–85°) and has fast switching response (2.4 and 2.5 s for coloration and bleaching, respectively), excellent cycling performance (at least 2000 cycles), and extremely low power consumption (4.0 mW cm −2 ).
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JOURNAL OF MOLECULAR LIQUIDS
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2022
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IF 6.633
Yuanyuan Cao,Shuyi Shan,Yitong Lu,Jialu Luo,Yilin Li,Rongzhang Hao
Low toxicity is one of the key properties for the sustainable application of polyethylene glycol-based deep eutectic solvents (PEG-based DESs) in separation, catalysis, biochemistry and analysis. However, the toxicity of PEG-based DESs is not reported and the rules for obtaining lower toxicity is needed to explore. Herein, the cytotoxicity of several PEG-based DESs against lung cancer cell (A549) was evaluated by CCK-8 assay, and strategies for the minimizing and tuning the toxicity of DESs are for the first time proposed from the aspects of mole ratio, hydrogen-bonding donor, hydrogen-bonding acceptor, components numbers, and solvent concentration. The results indicated that the DESs are more toxic than their individual components, and the toxicity order of DESs is generally in accordance with the individual components except for the hydrogen-bonding donor. This work would provide possible routes for the decrease of DESs toxicity for sustainable and green chemistry.
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Soft Matter
·
2022
·Vol. 18
·期 16
·3241-3248
·
IF 4.046
Ying Zhang,Hejie Wang,Qintang Li,Xiao Chen
As novel solvents, deep eutectic solvents (DESs) are non-toxic, easily producible and biocompatible, which is attractive for eutectogel fabrication. In this work, a benzene 1,3,5-tricarboxamide (BTA) derivative (substituted by three hexanoic acid) was selected to prepare a supramolecular gel in a suitable DES composed of choline chloride and phenylacetic acid molecules. The obtained eutectogel exhibited higher stability than that produced in conventional solvents. The gel microstructure was composed of spiral fiber networks as confirmed from atomic force microscopy and scanning electron microscopy observations. Macroscopic chirality was therefore recognized by the circular dichromatic spectrum, though such a supramolecular chiral signal was random. To explore the gelation mechanism, the effect of BTA derivative molecular structure change was systematically investigated. With the help of Fourier transform infrared spectroscopy and powder X-ray diffraction, the gel formation was attributed to the π–π stacking of adjacent BTA molecules and the three-fold hydrogen bond between amide groups or the hydrogen bond between carboxylic groups. Furthermore, the directional hydrogen bonds between BTA and solvent molecules induced their aggregate to form one-dimensional fibers, which were either left- or right-handed. The obtained results not only extend the gel systems in DESs, but also help design the supramolecular chirality from non-chiral molecules.
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CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Zizhao Qian,Yuanxiang Xiao,Xujun Zhang,Qing Li,Lujie Wang,Feiya Fu,Hongyan Diao,Xiangdong Liu
Bisphenol A (BPA) is the main precursor in the synthesis of epoxy resins. However, because of its toxic and nonrenewable nature, BPA is unsuitable in the sustainable preparation of epoxy resins. In contrast, Diphenolic acid (DPA) is renewable but its carboxyl group limits its applications in bio-based thermosets. In this study, we report a novel amidation route to tailor DPA to produce epoxide monomers that present epoxy resins with a high performance. The diphenolic amides exhibited very low toxicities when compared with that of BPA, and also provided an unexpected autocatalytic effect on the curing reactions when succinic anhydride (SA) was used as the hardener. Dynamic mechanical analyses (DMA) and tensile test results confirmed the remarkable thermomechanical properties of the cured epoxy resins, which may be attributed to the increased cross-linking density and enhanced hydrogen bonding by the amide groups. Among the SA-cured epoxy resins, diglycidyl ether of diphenolic ethylamide exhibited the best performance, which included a high T g of 114 °C, char yield (CY) of 20%, tensile strength of 60.2 MPa, and toughness value of 185 MPa. In addition, the DPA-derived epoxy resins have great potential in the preparation of bio-based composites because they act as excellent interfaces between the resin and cotton fibers (CoFs). Our study presents a new strategy to prepare bio-based epoxy resins with a high performance, emphasizing the greater potential of amidated DPA derivatives to replace BPA in the epoxy resin market.
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2021
·
IF 6.064
Hao Liu,Baomin Fan,Zining Liu,Xiaoqi Zhao,Biao Yang,Xingwen Zheng,Hua Hao
Polyaniline (PANI), poly( N -methylaniline) (PNMA) and poly( N- formylanilide) (PNFA) coatings were fabricated over mild steel via chronoamperometric strategy in oxalate electrolyte. Scanning electron microscope (SEM), attenuated total reflection infrared spectroscopy (ATR-IR) and X-ray photoelectron spectroscopy (XPS) evidenced the polymerization of monomers . Anticorrosive effects of PANI, PNMA and PNFA coatings for steel substrate were evaluated during long-term immersion in 3.5% NaCl solution by potentiodynamic polarization , electrochemical impedance spectroscopy (EIS) and frequency modulation (EFM). Morphological variation for coated specimens before and after immersion in NaCl solution was also monitored by SEM and atomic force microscope (AFM). Differentiated protection capability were observed for three coatings following the sequence of PNFA > PNMA > PANI. Through electrochemical and interfacial analyses, electroactivity and physical barrier were ascertained as the critical factors, especially the former one, in the long-term protection capacity. Electroactivity was distinguished by the elevated apparent current density from non-destructive EFM measurements. Furthermore, electron-donation and -withdrawal effects of N -substituents played an essential role in coating electroactivity. In detail, N -substituents improved the anodic protection and physical barrier of PNMA and PNFA coatings. Particularly, formyl with electron-withdrawal effect reinforced the anodic protection and thus the superior the anticorrosion efficiency of PNFA for underlying steel.
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ACS Omega
·
2020
·
IF 2.87
Yan Ji,Xiaoliang Yang,Zhi Ji,Linhui Zhu,Nana Ma,Dejun Chen,Xianbin Jia,Junming Tang,Yilin Cao
The infrared spectrum (IR) characteristic peaks of amide I, amide II, and amide III bands are marked as amide or peptide characteristic peaks. Through the nuclear magnetic resonance study, N-methylacetamide has been determined to have six fine components, which include protonation, hydration, and hydroxy structures. Then the independent IR spectrum of every component in N-methylacetamide is calculated by using the density functional theory quantum chemistry method, and the contribution of each component to amide I, II, and III bands is analyzed. The results of this research can help to explain the formation of the amide infrared spectrum, which has positive significance in organic chemistry, analytical chemistry, and chemical biology.
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CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2018
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IF 1.712
Pengcheng Hu,Wei Jiang,Lijuan Zhong,Shufeng Zhou
The physicochemical properties of three different amide–AlCl 3 based ionic liquid (IL) analogues and their mixtures with copper salt, such as conductivity, viscosity, density and isobutane solubility were determined over a wide range of temperatures. The effects of amide structure, amide/AlCl 3 molar ratio and CuCl modification on these physicochemical properties were investigated. Results showed that the conductivity of amide–AlCl 3 based IL analogues was much lower than that of traditional Et 3 NHCl–AlCl 3 IL with same ligand/AlCl 3 molar ratio due to incomplete splitting of AlCl 3 , whereas the density and viscosity of amide–AlCl 3 based IL analogues were slightly higher. The viscosity of amide–AlCl 3 based IL analogues was closely related to the amide structure, and followed the order of DMA–AlCl 3 > AA–AlCl 3 > NMA–AlCl 3 with same amide/AlCl 3 molar ratio. Meanwhile, the density of amide–AlCl 3 based IL analogues ranked in the following order: AA–AlCl 3 > NMA–AlCl 3 > DMA–AlCl 3 . Increasing the amide/AlCl 3 molar ratio decreased the conductivity and density, while increased the viscosity. The solubility experiment indicated that the isobutane solubility in NMA–AlCl 3 was highest than that in two other IL analogues. Under the modification of CuCl, the conductivity, viscosity and density of these IL analogues increased, whereas the isobutane solubility decreased. These results provide the foundation for the development of a suitable IL analogue catalyst for isobutane alkylation .
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RSC Advances
·
2014
·Vol. 5
·期 9
·6413-6418
·
IF 3.708
Hui Li,Guoping Zhang,Libo Deng,Rong Sun,Xing Ou-Yang
Thermally responsive copolymer P(NIPAm-co-NMA) was prepared via a radical copolymerization and spun into nanofibers using electrospinning. After thermal crosslinking, the electrospun fibers were modified using KH590 and silver nanoparticles were introduced onto the fiber surface using a chemical plating method. The electrical resistance of the composite fibers containing 65.5% of silver at different temperatures was investigated and it was found that the resistance dropped by ∼60% as the temperature increased from 42 °C to 46 °C, which is consistent with the solubility transition of PNIPAm with the change of temperature as revealed by differential scanning calorimetry (DSC) measurement.
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INORGANIC CHEMISTRY
·
2016
·
IF 4.82
Pengcheng Hu,Rui Zhang,Xianghai Meng,Haiyan Liu,Chunming Xu,Zhichang Liu
Several amide–AlCl3-based ionic liquid (IL) analogues were synthesized through a one-step method using three different structure amides as donor molecules. The effects of the steric and inductive effects of the methyl group substituted on the N atom on the asymmetric splitting of AlCl3 and the coordination site of the amide were investigated by 27Al NMR, Raman, in situ IR, and UV–vis spectra for these IL analogues. Bidentate coordination through both the O and N atoms was dominant in the N-methylacetamide–AlCl3- and N,N-dimethylacetamide–AlCl3-based IL analogues because of the inductive effect of the methyl group. By contrast, the acetamide–AlCl3-based IL analogue presented mainly in the form of monodentate coordination via the O atom. Compared with monodentate coordination, bidentate coordination was favorable to the asymmetric splitting of AlCl3 with the same amide–AlCl3 molar ratio. Under the influence of the steric and inductive effects of the methyl group, the ionic species percentages in these IL analogues ranked in the following order: N-methylacetamide > N,N-dimethylacetamide > acetamide.
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