JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Xiao Wang,Yao Fu,Feifei Li,Zhaokun Sun,Cunguang Zhu,Gang Zhao,Xijin Xu
Exploration of novel sensing materials and sensing strategies to provide highly sensitive and selective ammonia (NH 3 ) gas detection is imperative for environmental pollution monitoring. Herein, a multi-heterostructure and surface free radical activation strategy is employed to enhance the NH 3 sensing performance of tin phosphide (SnP x ) at room temperature (RT). Characterizations confirm the uniform dispersion of SnP x on nitrogen-doped reduced graphene oxide ( N -rGO) and the effective coating of polyaniline (PANI) film. The PANI/SnP x / N -rGO sensors show a well sensing ability to NH 3 gas with a high sensitivity (3.1 @ 40 ppm) at RT, good selectivity and a low detection limit of 36.8 ppb. The multi-heterostructure can enable precise modulation of electronic properties and energy barriers. Additionally, the sensing material shows enhanced responses with increasing relative humidity, exhibiting a response of 2.7 to 10 ppm NH 3 at the relative humidity of 70 %. This improvement is attributed to the formation of hydroxyl radicals through the dissociation of surface adsorbed water molecules, which promotes the surface gas adsorption. This study offers an effective strategy for fabricating highly sensitive sensing materials and advances the research on new sensing mechanisms.
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ORGANIC PROCESS RESEARCH & DEVELOPMENT
·
2025
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IF 3.5
Yong Song,Jinsong Li,Shikang Liu,Bo Jin,Rufang Peng
Although mechanochemical synthesis has gained widespread application, our understanding and enhancement of the control of the reaction need to be improved. In this work, we confirm that the mechanochemical reaction of the active pharmaceutical ingredient dantrolene is controlled by diffusion-controlled kinetics. On this basis, we demonstrate a novel approach to modulate mechanochemical reactivity through a diffusion enhancement strategy mediated by supramolecular interactions. The method employs a highly efficient spiral gas–solid two-phase flow technique, in which urea, an additive that can establish supramolecular interactions with 1-aminohydantoin hydrochloride, is introduced into the reaction system to substantially enhance diffusion, thus facilitating the efficient synthesis of dantrolene. Notably, in this diffusion enhancement process, the weakening of mechanical forces triggers the nucleation and growth of the active substrate to form structurally well-defined eutectic crystals that inhibit the reaction. This strategy reduces the mechanochemical reaction time of dantrolene and its analogs to less than 30 s. In addition, thiourea and acetamide, which are structurally similar to urea, promote the reaction, and their effects correlate with the number of supramolecular sites of action.
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Materials Today Nano
·
2026
·
IF 7.6
Shuangying Li,Yueyuan Zhu,Jia Xu,Wenpeng Cui,Ren Li,Dong Wang,Meiyu Chen,Xinyuan Shi,Shaoxiang Li
Designed MC-loaded leaf-vein-inspired 3-layer gradient P224 membrane with multi-functions for high-dust protection. • Combined electrospinning with pore/wettability gradient to make filter with dust removal & moisture transport. • Achieved dual mechanism of efficient dust filtration and unidirectional moisture transport. • Enabled P224 use in high-dust environments, promoting next-gen personal respiratory protective equipment. Herein, we designed a facial nanofiber filter capable of efficiently adsorbing dust and achieving unidirectional water transport for moisture wicking (named P224). Multifunctional filtering fiber membrane loaded with Cu-MOF@MXene (MC) was successfully prepared via electrospinning, based on a three-layer leaf-vein-inspired multi-gradient structure. From inner to outer layers, P224 consists of PVDF@MC, PVDF/PVA, and PVA@MC. The decreasing fiber pore size gradient and the increasing wettability gradient enable it to have both mechanical filtration and single-stream water transport functions. The P224 fiber membrane prepared under the optimal ratio and spinning conditions has a filtration performance of up to 99.2% for PM0.3 (NaCl aerosol), an increased self-cleaning ability of approximately 150%, an antibacterial rate of 90% against Staphylococcus aureus . The test results of the unidirectional water transmission experiment and the water vapor transmission meter show that the water vapor transmission rate of this fiber membrane is 1542 g/(m 2 ·24h), and it has very good unidirectional water transmission capacity. This “moisture-gas dual-effect” nanofiber protective dust-filtering membrane paved the way for the design of personal protective equipment. We designed a three-layer leaf-vein-inspired nanofiber filter membrane (P224) via electrospinning, composed of inner PVDF@MC, middle PVDF/PVA, and outer PVA@MC. It has pore size and wettability gradients, enabling “moisture-gas dual-effect”. Optimized P224 shows 99.2% PM2.5 filtration efficiency, ∼150% enhanced self-cleaning, 90% antibacterial rate against Staphylococcus aureus , 1542 g/(m 2 ·24h) water vapor transmission rate, and good unidirectional water transport, laying a foundation for personal protective equipment. Download: Download high-res image (350KB) Download: Download full-size image
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ACS Applied Nano Materials
·
2023
·
IF 5.9
Xiaoping Li,Xinpeng Wang,Lei Dong,Qing Zou,Chunlin He,Yanqiu Zhu,Toyohisa Fujita,Changzhong Liao,Cheng-Wei Kao,Ying-Rui Lu
As the main fission products of nuclear power plants, radioactive iodine isotopes are of great concern because of their great harm to public safety. In this work, a nanocomposite of bismuth sulfide coated with the electrospinning SiO2 nanofibers with a diameter of about 280 nm nanostructure-based membranes (Bi2S3@SiO2) was successfully prepared to dispose of gaseous iodine. Results showed that the adsorption capacity of Bi2S3@SiO2 for iodine can be up to 1180 mg g–1, which is higher than the commercial silver-exchanged zeolite (AgZ) and other bismuth-based adsorbents. Chemisorption is the major adsorption behavior of iodine capture. Thermogravimetric analysis results demonstrated that the Bi2S3@SiO2 nanocomposites were stable up to 300 °C before and after capturing iodine. X-ray diffraction results revealed that BiSI was initially formed and then transformed to BiI3. Scanning electron microscopy revealed that the sulfur element remains in the samples after interacting with iodine, and X-ray absorption near-edge spectra further confirmed that its oxidation states are a mixture of S0, S3+, and S6+. The oxidation states of bismuth and iodine are Bi3+ and I–, respectively, revealed by X-ray photoelectron spectroscopy. The reactions between Bi2S3@SiO2 nanocomposites and I2 vapor are as follows: I2 was reduced to be I– and the BiI3 crystalline phase is the final form; S2– in Bi2S3 was oxidized to higher valences (S0, S3+, and S6+), and amorphous phases are their final forms. The research results demonstrated that the nanostructure-based membranes prepared by this work would be a promising candidate nanomaterial for capturing iodine in the plant off-gas streams.
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COLLOIDS AND SURFACES B-BIOINTERFACES
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2023
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IF 5.8
Bo Zhou,Ben-Xu Jia,Ming-Jin Zhang,Yan-Jun Tan,Wei-Yuan Liang,Xiang Gan,Hong-Tao Li,Xiaoli Yang,Xing-Can Shen
Zn 2+ and H 2 S are essential to maintain normal prostate function, and sometimes can evolve into weapons to attack and destroy prostate cancer (PCa) cells. Nevertheless, how to achieve the targeted and effective release of Zn 2+ and H 2 S, and reverse the concentration distribution within PCa tumor cells still highly challenging. Herein, combined with these pathological characteristics of prostate, we proposed a tumor microenvironment (TME) responsive Zn 2+ -interference and H 2 S-mediated gas synergistic therapy strategy based on a nanoplatform of tannic acid (TA) modified zinc sulfide nanoparticles ( [email protected] ) for the specific treatment of PCa. Once the constructed pH-responsive [email protected] internalized by cancer cells, it would instantaneously decomposed in acidic TME, and explosively release excess Zn 2+ and H 2 S exceeding the cell self-regulation threshold. Meanwhile, the in situ produced Zn 2+ and H 2 S synergistic enhancement of cell apoptosis, which is evidenced to increase levels of Bax and Bax/Bcl-2 ratio, release of Cytochrome c in cancer cells, contributing to inhibit the growth of tumor. Moreover, the TA in cooperation with Zn 2+ specifically limits the migration and invasion of PCa cells. Both in vitro and in vivo results demonstrate that the Zn 2+ -interference in combination with H 2 S-mediated gas therapy achieves an excellent anti-tumor performance. Overall, this nanotheranostic synergistic therapy provides a promising direction for exploring new strategies for cancer treatment based on specific tumor pathological characteristics, and provides a new vision for promoting practical cancer therapy.
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高影响因子
MOLECULES
·
2023
·Vol. 28
·期 4
·1825
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IF 4.6
Lesly Dasilva Wandji Djouonkep,Christian Tatchum Tamo,Belle Elda Simo,Nasiru Issah,Marc Nivic Tchouagtie,Naomie Beolle Songwe Selabi,Ingo Doench,Arnaud Kamdem Tamo,Binqiang Xie,Anayancy Osorio-Madrazo
Volatile global oil prices, owing to the scarcity of fossil resources, have impacted the cost of producing petrochemicals. Therefore, there is a need to seek novel, renewable chemicals from biomass feedstocks that have comparable properties to petrochemicals. In this study, synthesis, thermal and mechanical properties, and degradability studies of a novel series of sustainable thiophene-based copolyesters like poly(hexylene 2,5-thiophenedicarboxylate-co-bis(2-hydroxyethoxybenzene) (PTBxHy) were conducted via a controlled melt polymerization method. Fourier-transform infrared (FTIR) and nuclear magnetic resonance (1H NMR) spectroscopy techniques elucidated the degree of randomness and structural properties of copolyesters. Meanwhile, gel permeation chromatography (GPC) analysis showed a high average molecular weight in the range of 67.4–78.7 × 103g/mol. The glass transition temperature (Tg) was between 69.4 and 105.5 °C, and the melting point between 173.7 and 194.2 °C. The synthesized polymers outperformed poly(ethylene 2,5-thiophenedicarboxylate) (PETF) and behaved similarly to polyethylene terephthalate. The copolyesters exhibited a high tensile strength of 46.4–70.5 MPa and a toughness of more than 600%, superior to their corresponding homopolyesters. The copolyesters, which ranged from 1,4-bis(2-hydroxyethyl)benzene thiophenedicarboxylate (TBB)-enriched to hexylene thiophenedicarboxylate (THH)-enriched, offered significant control over crystallinity, thermal and mechanical properties. Enzymatic hydrolysis of synthetized polymers using porcine pancreatic lipase (PP-L) over a short period resulted in significant weight losses of 9.6, 11.4, 30.2, and 35 wt%, as observed by scanning electron microscopy (SEM), with perforations visible on all surfaces of the films. Thus, thiophene-based polyesters with cyclic aromatic structures similar to terephthalic acid (TPA) show great promise as PET mimics. At the same time, PP-L appears to be a promising biocatalyst for the degradation of bioplastic waste and its recycling via re-synthesis processes.Keywords:thiophene-based polyesters;2,5-thiophenedicarboxylate;bis(hydroxyalkyl)benzene;aliphatic diols;mechanical properties;biodegradation
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ACS Applied Nano Materials
·
2022
·
IF 6.14
Yuanliang Huang,lili Liu,Chengyao Hu,Kun Xiong,Dongmei Li,Yawen Huang
The application of most current phosphate adsorbents is limited by their high cost, low removal capacity, difficulty of recovery, and short lifetime. In this study, we developed a gas–liquid reaction assisted by a coordination method to prepare highly positively charged ferroferric oxide (Fe3O4) nanoparticles loaded on polyurethane sponge. It was found that the gas–liquid reaction drastically decreases the size and increases the loading capacity of Fe3O4 nanoparticles as compared with the conventional liquid method. Further, the use of trimethylamine vapor induced the coordination of Fe3+, facilitated the formation of free Cl ions, and inhibited the hydrolysis of Fe–Cl bonds, thus greatly decreasing the amount of hydroxyl groups and increasing the surface positive charge on Fe3O4 nanoparticles. As a result, the Fe3O4 nanoparticles in this study have a saturated PO43– adsorption capacity of 229.8 mg·g–1, which was appreciably higher than that of conventional Fe3O4 adsorbents (57.8 mg·g–1). Our study further revealed that the introduction of a thin layer of polyurethane coating on the surface of Fe3O4 nanoparticle-composited adsorbents could drastically improve their stability while preserving the adsorption capacity under the impact of water (500 rpm stirring for 72 h). The composited adsorbents also preserve the adsorption capacity after recycling three times. Finally, the adsorption experiment on real river wastewater indicated that the composited adsorbents enable the decrease of phosphate concentration from 0.6 to 0.02 ppm, reflecting the application potential for relieving phosphate pollution in neutral waters.
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JOURNAL OF SEPARATION SCIENCE
·
2022
·Vol. 46
·期 2
·2200622
·
IF 3.614
Peng Jin,Yu-xin You,Lin-lin Zhao,Yan-lin Zhao,Xiao-xiao Zheng,Yan Du,Dao-quan Tang
Immunoassays are currently not available in commercial kits for the quantification of valproic acid, vigabatrin, pregabalin, and gabapentin, which also cannot suffer the limitations of interferences of substances with similar structures. Chromatography is a good alternative to immunoassay. In this study, a simple and robust non-derivatization gas chromatography-mass spectrometry method for simultaneous determination of the above four drugs in human plasma was developed and validated for therapeutic drug monitoring purposes. This method employed benzoic acid as the internal standard with hydrochloric acid for plasma acidification and ACN for precipitate protein. The supernatant was directly injected into gas chromatography-mass spectrometry for analysis. Good linearity was obtained with linear correlation coefficients of the four analytes of 0.9988–0.9996. Extraction recoveries of valproic acid, vigabatrin, pregabalin, and gabapentin were respectively in the ranges of 91.3%–94.5%, 90.0%–90.9%, 90.0%–92.1%, and 88.0%–92.2% with the relative standard deviation values less than 12.6%. Intra- and inter-batch precision and accuracy, and stability assays were all acceptable. Taken together, the novel method developed in this study provided easy plasma pretreatment, good extraction yield, and high chromatographic resolution, which has been successfully validated through the quantification of valproic acid in the plasma of 46 patients with epilepsy.
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POLYMER COMPOSITES
·
2023
·Vol. 44
·期 12
·8389-8402
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IF 5.2
Dongxia Li,Qiong Lin,Lingli Liu,Xuan Song,Zhongxin Wang,Xiangfeng Sun,Yuxin Xue,Yulin Fu,Yuanhao Shi,Zhiqi Li,Xuefeng Gui,Kai Xu
The incorporation of two-dimensional layered metal hydroxides (LDHs) into nonpolar silicone rubber (SR) is not yet universal, mainly because of their originally hydrophilic surface and limited interlamellar galleries that make nanoparticle dispersion and intercalation of polymer segments more difficult. In this work, we develop a modified Ca-Mg-Al LDH form by conjugating the ternary Ca-Mg-Al LDH with silsesquioxane (SQ) surfactants containing benzoic acid moieties and polyethylene glycol chains via an in-situ intercalation process. The bulky anions conjugation to the hydroxide layers dictated both the surface hydrophobicity and interlayer spacing of the modified Ca-Mg-Al LDH, enabling strong inter-constituent interactions within the nanocomposites as well as extensive polymer penetration after incorporation into the SR matrix. The SR/modified LDH nanocomposites show excellent thermal stability and satisfactory mechanical properties due to the homogeneous dispersion and good compatibility of modified Ca-Mg-Al LDH. Moreover, we have observed that the shear-induced orientation of the nano-layered particles upon application of stress imparts a more notably decreased SR/LDH-SQ-40 gas transmission rate (reduced by 55% with respect to that in the unstretched composite films). This result also corroborates the better interfacial bonding and highly efficient load transfer between silsesquioxane-modified LDH and polymer in melt extrusion mixing of such composites. Highlights Modified Ca-Mg-Al LDH with increased layer spacing and reduced hydrophilicity. Modifier enhanced the interfacial adhesion between Ca-Mg-Al LDH and SR matrix. SR/modified LDH showed excellent thermal stability and mechanical properties. Orientation and exfoliation enhanced gas barrier properties of SR/modified LDH.
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PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Richeng Lian,Yihao Jiang,Yaqin Zhang,Qingyao Gao,Haocun Guan,Lei Liu,Xilei Chen,Chuanmei Jiao
In recent years, developing bio-based intumescent flame-retardant (IFR) epoxy coatings for fire protection of steel has become a research hotspot. However, how to endow bio-based IFR epoxy coatings with excellent fire protection, toxic gas suppression, and mechanical properties simultaneously remains a formidable challenge. Here, a bio-based IFR hybrid with the maize structure (PAbz@PBA) was easily constructed by an organic-inorganic hybrid strategy and employed to prepare high-performance IFR epoxy coatings. It has been shown that PAbz@PBA hybrids enhance the curing activity of epoxy coatings in addition to their good dispersion and interfacial compatibility. Notably, the epoxy coating containing 5.0 wt% PAbz@PBA (EP-5%PAbz@PBA) exhibits more efficient fire protection (peak heat release rate and total heat release are reduced by 48.3 % and 34.0 %, respectively), smoke suppression (total smoke production is decreased by 35.9 %), and toxic gas suppression (peak CO production rate is reduced by 39.6 %) compared to the virgin epoxy coating. Meanwhile, the heat insulation performance of EP-5%PAbz@PBA shows superiority compared to that of the virgin epoxy coating, as reflected by its lowest backside temperature (66.3 °C). Furthermore, compared with the virgin epoxy coating, EP-5%PAbz@PBA exhibits improved flexural and impact strengths. This work offers a viable idea for designing bio-based PAbz@PBA hybrids and preparing IFR epoxy coatings with various excellent properties.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Guohua Li,Pengfei Bian,Ran Wang,Yan Li,Huiju Cao,Senlin Zhang,Zongshuo Hao,Mingli Wang,Tifeng Jiao
Through this study, a variety of carbon spheres/dye (CS/dye) composite films were prepared based on the Langmuir-Blodgett (LB) technology. The prepared CS/dye composite films were tested for acid and alkali gases discoloration characteristics. The CS/CR composite film shows good acid/alkaline gas sensing performances, and its characteristic absorption peaks have a significant movement in the UV–vis spectrum. In addition, the surface enhancement of the Raman scattering (SERS) experiment proves the good Raman enhancement performance of the prepared composite LB film with the enhanced factor (EF) of 8.5 × 10 4 . The relative standard deviation of Raman intensity is 24.74 %, indicating the good reproducibility and uniformity of composite film, which makes it applicable to the detection of trace molecules. Furthermore, the CS/NR composite film has a current density of 1217 μA/cm 2 when the potential voltage is 1 V, indicating that the composite film has a high carrier transfer rate, which provides a reference for further exploration of optoelectronic devices of CSs system.
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ENERGY & FUELS
·
2022
·
IF 4.654
Bowen Sun,Ping Guo
Determination of condensate oil saturation in condensate gas reservoirs is the key parameter for estimating condensate oil blockage and gas well productivity. In PVT experiments, the constant volume depletion (CVD) method is usually adopted to obtain condensate oil saturation. However, in this method, the effect of porous media is not considered. This study applied a low field nuclear magnetic resonance (NMR) test instrument in which 1D T2 and 2D T1–T2 NMR techniques are carried out to investigate the condensate oil saturation of “condensate gas-saturated” core plugs in the depletion process of 29 to 5 MPa at 25 °C. It was observed here that the T1/T2 ratios of condensate oil and gas at the signal peak are approximately 20 and 60, respectively, and the condensate oil and gas could be distinguished by positions in 2D NMR T1–T2 maps. Additionally, a standard equation (the relationship between the signal intensity and the condensate oil saturation) with an excellent linear relationship was established for the calculation of the condensate oil saturation in core plugs. The results indicated that the condensate oil first appears in micropores, and the retrograde condensation phenomenon of the core mainly comes from the contribution of mesopores and macropores; furthermore, the maximum condensate oil saturation in the porous medium is 5.36% higher than that in the PVT cylinder, and the dew point pressure in the porous medium is 11.83% higher than that in the PVT cylinder. The T1–T2 NMR technique may become an efficient approach for assessing fluid distributions and saturations, simultaneously possessing potential applications for characterizing fluid occurrence states in the core.
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