CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Qidong Zha,Yuankun Yao,Zuozhu Yin,Yuanting Deng,Zihao Li,Yu Xie,Yuhua Chen,Chenggang Yang,Yidan Luo,Mingshan Xue
Water resources are increasingly being damaged by human activities, and it is crucial to deal effectively with polluted water resources. Due to the diversity of pollution sources (oil, organic dyes, and other complex pollutants), it makes sense to develop a material that can handle these pollutants simultaneously. In this article, we construct a simple and fast method to fabricate multifunctional superhydrophobic polyurethane sponges (PU). A superhydrophobic composite coating constructed from ZIF-8, polydimethylsiloxane (PDMS), and stearic acid (SA) was attached to the surface of the polyurethane sponge by a simple impregnation method. Through the above process, we have successfully integrated oil–water separation, photocatalysis, and superhydrophobicity into a polyurethane sponge. The results showed that the PDMS/SA/ZIF-8 polyurethane sponge (PSZPU) had a high hydrophobicity angle (162.9 ± 1.1°). In addition, PSZPU maintains high oil–water separation performance (mean value of separation efficiency > 94.24 %) and superhydrophobicity after oil–water separation cycling tests and a series of harsh environmental tests in acidic and alkaline solutions, high temperatures, abrasion, and UV aging irradiation. Overall, the creation of PSZPU provides a new application for superhydrophobic sponges in water resource treatment.
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Micromachines
·
2024
·Vol. 15
·期 11
·1355
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IF 3
Wentao Li,Jianxin Zhou,Wei Sheng,Yuxi Jia,Wenjie Xu,Tao Zhang
A flexible pressure sensor, capable of effectively detecting forces exerted on soft or deformable surfaces, has demonstrated broad application in diverse fields, including human motion tracking, health monitoring, electronic skin, and artificial intelligence systems. However, the design of convenient sensors with high sensitivity and excellent stability is still a great challenge. Herein, we present a multi-scale 3D graphene pressure sensor composed of two types of 3D graphene foam. The sensor exhibits a high sensitivity of 0.42 kPa−1within the low-pressure range of 0–390 Pa and 0.012 kPa−1within the higher-pressure range of 0.4 to 42 kPa, a rapid response time of 62 ms, and exceptional repeatability and stability exceeding 10,000 cycles. These characteristics empower the sensor to realize the sensation of a drop of water, the speed of airflow, and human movements.
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PubMed
高影响因子
DESALINATION
·
2025
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IF 9.8
Yang Zhao,Tao Wu,Yanliang Wang,Zimo Feng,Lijuan Cheng,Yu Zheng,Hui Wang,Kai Xu,Runnan Zhang,Zhongyi Jiang
Increasing the positive charge density (PCD) of nanofiltration (NF) membranes is crucial to acquiring the high selectivity of Li + /Mg 2+ separation and remains extensive exploitation. Herein, a novel modifier (1-methyl hydrazide-3,5-dibenzyl trimethyl ammonium bromide, MDTAB) containing two quaternary ammonium groups and an amino group was designed and synthesized, which was grafted onto the polyamide NF membrane surface. The surface PCD of the MDTAB modified membrane (+7.02 mC m −2 ) was almost four times that of the unmodified membrane, which is the highest among the existing positively charged NF membranes. The MDTAB modified membrane acquired MgCl 2 rejection as high as 99.3 %, and the pure water permeance was 15.92 L·m −2 ·h −1 ·bar −1 . When utilized for Li + /Mg 2+ separation, the Mg 2+ /Li + mass ratio was reduced from the original 100 to 1.73. This strategy may provide valuable guidance for the rational design of the positively charged membrane in salt lake lithium extraction applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Ruoxin Hu,Zhenbo Cai,Lijun Ji,Yanyang Wu,Xiaohua Ma
Recovery of valuable aromatic compounds from tobacco waste is important, and efficient separation methods remain highly demanding. This work proposed a hybrid PDMS membrane for high flux aromatic compounds recovery. MCM-41, a silicone-based molecular sieve, was selected to fabricate the membrane to improve the pervaporation performance. The prepared MCM-41/PDMS membrane was investigated in model aqueous solution at different concentrations and temperatures. The optimal pervaporation fluxes of the MCM-41/PDMS membrane achieved 0.95 g/(m 2 ·h), 0.51 g/(m 2 ·h), and 0.26 g/(m 2 ·h) for 2-phenylethanol, β-ionone, and dihydroactinidiolide, respectively, exhibiting superior performance to the PDMS membrane. Moreover, the long-term stability of the hybrid membrane was examined with practical tobacco extract. The average fluxes were 41.20 mg/(m 2 ·h), 20.57 mg/(m 2 ·h), and 9.73 mg/(m 2 ·h), respectively. The hybrid PDMS membrane in this study, with high permeate flux and selectivity, is promising for recovery of aromatic compounds particularly from tobacco waste.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-10
·
IF 15.7
Bi Yuhe,Sun Jianhui,Cao Sheng,Li Qiuyan,Zheng Jinju,Yuan Xi,Wang Yunjun,Zou Bingsuo,Zhao Jialong
As next-generation display technologies, eco-friendly colloidal quantum dot light-emitting diodes have drawn great attention due to their excellent luminescence properties, along with their rapid development. However, practical applications of eco-friendly quantum dot light-emitting device remain challenging, primarily due to the inferior performance of green device, which still lag behind their red and blue counterparts. Herein, we present efficient green device based on interfacial potential-graded ZnSeTe quantum dots. Our findings show that this potential-graded structure alleviates interfacial lattice mismatch and strain, reducing structural deformation and misfit defects. The smoothed interfacial potential suppresses the nonradiative recombination processes, particularly Auger recombination revealed by excitation-intensity dependent ultrafast transient absorption kinetics. Consequently, the interfacial potential-graded quantum dots demonstrate highly efficient green quantum dot light-emitting diodes, with a peak external quantum efficiency of 21.7% at 520 nm and a corresponding current efficiency of 75.7 cd A −1 .
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PubMed
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CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Jian-Bo Yang,Jian Wang,Yin-Hua Zhu,Pin-Fang Yan,Zhi-Ming Dong,Hua Mei,Yan Xu
In order to achieve ultra-low sulfur fuel production, it is essential to design highly efficient catalysts for deep desulfurization. In this work, trivacant Keggin-type tungstophosphate PW 9 (Na 9 [A-PW 9 O 34 ]•7H 2 O) was innovatively utilized to synthesize polyoxometalate-based supported silica C 16 -PW 9 /SiO 2 . The intact presence of polyoxometalates (POMs) was evidenced by several techniques of describing the structure and composition of the obtained hybrid samples. Compared with the saturated tungstophosphate ([PW 12 O 40 ] 3− ), the [A-PW 9 O 34 ] 9− showed better coordination, which can coordinate with five ILs (C 16 MIM). More ILs make it easier for the catalyst to attract DBT to the vicinity of PW 9 , and the abundance of metal oxide W = O on PW 9 endows the catalyst’s excellent catalytic activity. Specifically, C 16 -PW 9 /SiO 2 exhibited excellent oxidative desulfurization performance, achieving 100 % dibenzothiophene (DBT) conversion efficiency at 50 °C for 10 min, and the turnover frequency (TOF) number reached 723.4 h −1 , which is higher than the catalysts of the POMs type that have been published. The strategy of combining lacunary polyoxometalates with ionic liquids offers a fresh viewpoint on the creation of POM-based catalysts.
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高影响因子
DESALINATION
·
2025
·
IF 9.8
Ritong Wang,Zuozhu Yin,Guoyan Yang,Qidong Zha,Cong Xiong,Yu Xie,Jilin Xu,Yidan Luo,Zhen Hong,Chan Xie,Mingshan Xue
With the advancement of socio-economic development, the adverse effects of crude oil and microplastics on water resources have become increasingly prominent. The creation of a sustainable and versatile adsorption material capable of efficiently removing diverse pollutants remains a pressing concern warranting our attention. In response to this challenge, a multifunctional superhydrophobic 3D polyurethane sponge (PSTS) was developed by using polydimethylsiloxane (PDMS) and stearic acid modified TiO 2 nanoparticles through dip coating technology. This 3D sponge not only demonstrates the ability to effectively clean up high-viscosity crude oil spills under the influence of light and heat, but also shows excellent capabilities and broad applicability in water-oil emulsion separation, water-based organic contaminant removal, and microplastic extraction. This pioneering material showcases its superior performance and broad applicability. PSTS displays remarkable hydrophobicity, with a water contact angle (WCA) of 154±3°，water slide angle (WSA) of 5°, impressive physical/chemical resilience, and achieves an average oil-water separation efficiency exceeding 94%. It also possesses photocatalytic degradation properties, evidenced by the degradation of methylene blue solution within 6 h. Notably, this material maintains 94% separation efficiency after 7 cycles, indicating strong stability. In addition, the effect of solar radiation increased the oil/water separation efficiency of the samples, reaching a maximum surface temperature of 102 °C after solar irradiation, thus reducing the viscosity of the oil. In the light environment, the absorption capacity of its high viscosity oil is 4.675 g/g, which is much more than the absorption capacity of 1.505 g/g in the dark environment. The sample demonstrates commendable microplastics adsorption. It can adsorb microplastic particles dispersed in water within 10 s，adsorption up to 0.45 g/g. The PSTS is also highly efficient in separating emulsions, separating oil from emulsions within 3 min. Our research offers not only an innovative scheme for fabricating a multi-functional sponge tailored for oil-water separation with photothermal responsiveness and microplastic treatment but also presents valuable insights for practical applications, thereby contributing to environmental sustainability endeavors.
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CATALYSIS LETTERS
·
2024
·
IF 2.3
Shao Yulin,Xie Ping,Han Yuning,Zhong Tianhao,Li Tao,Yu Yingmin,Zhao Qingshan,Li Zhongtao
In response to the problem that the conventional concentrated sulfuric acid catalyst for esterification reactions are prone to corrosion and generate large amounts of acid-containing wastewater, highly efficient gel resin-loaded ionic liquid solid acid (SA-ILs) catalysts were prepared by a one-pot method of loading ionic liquids onto gel resins. It is shown that the gel resin carrier has a strong water-absorbing structure, and the ionic liquids are covalently loaded on the gel resin carrier through chemical bonding, leading to SA-ILs catalysts with excellent acidity and good structural stability. With an optimal ionic liquid loading of 11% and acid density of 3.25 mmol·g −1 ,the synthesized SA-ILs catalysts showed good catalytic performance in the transesterification reaction between acetic acid and ethanol at 80 °C for 1.5 h. The catalyst dosage was 10 wt% of the total mass of acetic acid and ethanol, and the ethanol to acetic acid addition was at a molar ratio of 1.5:1. Ethyl acetate yields of up to 81% were achieved after the reaction. The catalyst also showed slightly decrease of the catalytic performance after reused for five cycles. The lower activation energy of the catalyst is proved to be the key to facilitate the catalytic transesterification reaction. Graphical Abstract
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Wei Sheng,Jianxin Zhou,Wentao Li,Wenjie Xu,Yuxi Jia,Tao Zhang,Weini Wang
Hydrogels exhibit mechanical properties very similar to biological skin, rendering them promising candidates for electronic skin (e-skin) sensors. However, these materials suffer from significant temperature-induced electrical drift and unstable interfacial contact with metallic electrodes. In this study, we employ elastic graphene foam as electrodes to realize a fully flexible hydrogel device architecture. By designing straight-line and serpentine hydrogel geometries, we enable temperature self-calibration during strain measurements. The resulting hydrogel sensor demonstrates exceptional performance, including constant strain sensitivity (GF = 2.44 with linearity R2 = 0.9999), rapid strain dynamic response (70 ms), low strain detection limit (0.05%), and low temperature drift. This approach not only addresses critical limitations in hydrogel-based sensing platforms but also establishes a robust framework for developing more reliable and versatile flexible sensors.
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Sustainable Materials and Technologies
·
2024
·
IF 8.6
Zhoumei Xu,Fukai Chu,Chuanshen Wang,Xin Wang,Yanbei Hou,Weizhao Hu,Lei Song
High charge separation and transfer efficiency are considered as key factors of photocatalysts in wastewater treatment applications. In this work, a high performance photocatalyst g-C 3 N 4 @ZnTDA was designed and applied through a facile solvothermal strategy. The microstructural, morphological, physicochemical, and photoelectrochemical properties of g-C 3 N 4 @ZnTDA were fully characterized. The photocatalytic activity of g-C 3 N 4 @ZnTDA nanoparticles under visible light source in degrading the 2,4-dibromophenol(2,4-dB) contaminants was also successfully studied. Additionally, the g-C 3 N 4 @ZnTDA composite demonstrates easy operation and good regeneration ability, making it highly promising for the efficient removal of phenolic pollutants from wastewater. Besides, a novel reutilization method for used catalyst as flame retardant and for PU foams was successfully testified. The MCN-3 as a fire-safety coating could reduce the heat release and improve flame retardancy of PU composites. This work opens a new window for valuable inspiration and structural design of reutilized MOF composites.
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高影响因子
POLYMER
·
2024
·
IF 4.1
Liang He,Qiyuan Yao,Yinuo Xu,Xiaoming Shao,Yang Chen,Ding Feng,Wencai Wang
Electromagnetic interference (EMI) shielding materials with favorable flexibility, robustness, and multipurpose capabilities are urgently desired for smart wearable devices. Herein, flexible PDMS/cellulose nanofiber/Ag nanowire composite films with sandwich structures were successfully fabricated by a facile method. First, silver nanowires (AgNWs) were uniformly stacked in the upper part of the cellulose gel using a controlled two-step vacuum-assisted filtration; next, AgNWs were tightly embedded in the cellulose matrix by a hot-pressing strategy; finally, a hydrophobic protective layer, PDMS, was introduced. The water contact angle (WCA) of composite films could reach 121°. Compared with uniformly mixed films, AgNWs deposited only on the surface of the matrix allowed the conductivity to reach 381 S/cm at a low weight fraction of AgNWs (6 wt%). Thanks to such excellent conductivity, the composite films exhibited superior EMI shielding effectiveness (49 dB) at only 40 μm thickness, and Joule heating performance, i.e., the surface temperature reached 111.3 °C at 1.5 V driving voltage. It was worth noting that after bending and peeling damage, the WCA and EMI shielding effectiveness of composite films were not significantly impacted due to the hot-pressing strategy and hydrophobic surface protection. The robust composite films show huge application potential in the wearable electronics field.
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FUEL
·
2025
·
IF 7.5
Geng Chen,Zexiang Bi,Xu Li,Jinxiang Dong
The industrial utilisation of Fischer–Tropsch synthesis (FTS) products, particularly the valuable C5–C9 linear α-olefins, has been hindered by the high energy-intensive separation of olefins and alkanes with identical carbon numbers. This study presents a comprehensive process integrating the selective dimerisation of linear α-olefins to α-olefin dimers, enabling their separation from paraffins in FTS products. These dimers are subsequently converted into branched-chain aldehyde intermediates through heterogeneous hydroformylation using Rh/C as the catalyst. Notably, optimising the reaction conditions achieved the main product aldehyde of α-olefin dimers with excellent selectivity (up to 86.66 %) at 65 °C, compared to linear α-olefins, which exhibited only 49.31 % selectivity. In-situ IR spectroscopy was used to monitor the entire reaction process. The resulting branched aldehyde intermediates were further transformed into branched acids or branched alcohols through oxidation or reduction reactions, respectively. These products have diverse applications as surfactants, coal flotation agents, and cutting fluid additives. The synthesised compounds were characterised using FT-IR, GC, GC–MS, and NMR. In addition, a comprehensive evaluation of their physicochemical properties was conducted. This study provides a versatile design strategy for developing high-value intermediates from α-olefins in the FTS.
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