JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
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2024
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IF 5.8
Qihang Ye,Yihui Li,Zhaoping Zhong,Wei Wang,Xiang Zheng,Haoran Du,Qian Li,Yuxuan Yang,Renzhi Qi
The preparation of furfural, a valuable platform compound, through pyrolysis is an approach with practical prospects. Since cellulose represents the most abundant component in biomass feedstocks, enhancing its selectivity towards furfural during pyrolysis is crucial. In this study, S0 4 2- /Zr0 2 -based catalysts by loading them with various metals such as Fe, Co, Ni, Cu, and Zn was used to optimize furfural yield from cellulose. Among these catalysts, those loaded with iron (Fe) achieved the highest selectivity for furfural, with the best performance at a loading of 6 % by weight. This is because an appropriate amount of loaded metal Fe can manipulate the acidity sites on the catalyst surface, reducing the ratio of weak acid to strong acid and favoring selective production of furfural. Additionally, moderate metal loading can enhance both specific surface area and total pore volume of the catalyst, further improving catalytic performance. The research using a catalyst with the loading of 6 %wt Fe showed that the furfural content in cellulose pyrolysis products reached its maximum when the pyrolysis temperature was 600°C. Further increase in temperature led to the decomposition and conversion of furfural into other products, reducing the furfural selectivity. The addition of catalyst effectively improved the furfural selectivity in cellulose pyrolysis products, and as the ratio of catalyst to cellulose gradually increased, the furfural selectivity reached its maximum value of 31.53 % at a pyrolysis temperature of 600℃ and a catalyst to cellulose ratio of 4:1. These findings provide an insight into the use of biomass for furfural preparation and improving the efficiency of its preparation.
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NANO LETTERS
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2024
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IF 9.6
Shuwen Zhang,Yifan Li,Yanyu Li,Hui Ji,Xingjian Feng,Siyang Song,Kaiyuan Liu,Chongpu Zhai,Minglong Xu
The isolation and concentration of electrical charges at ionic-electronic interfaces are prevalent phenomena that impede effective communication between ionic and electronic systems. Detecting these concentrated charges at the interface is crucial for applications, such as signal transmission and ion detection. Current electrical detection approaches introduce additional ionic-electronic interfaces via metallic electrodes with an external stimulating voltage, which alters the initial ion distributions at the interfaces. In this work, we introduce the flexoelectricity of liquids to examine the electrical charge aggregation at ionic-electronic interfaces under cyclic mechanical loads. The measured electrical responses reflect the coupling phenomena between the flexoelectricity and the electric double layer. This proposed approach demonstrates the capability to quantify ion types and concentrations at interfaces. Furthermore, it can identify ion types in mixed solutions and offers high sensitivity at ultralow concentrations. This work promotes a nonchemical, general mechanical method for charge detection at ionic-electronic interfaces.
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Materials Today Communications
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2024
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IF 3.7
Pu Zhao,Zhengwei Li,Zhiwu Xu,Xuesong Liu,Jiuchun Yan
How to obtain a high-strength and corrosion resistance of Al/Sn/Al joint has been a longstanding goal for electronics industry. In this work, 6063Al was joined in the air by ultrasonic-assisted liquid phase diffusion bonding using a Sn filler metal . It was performed by applying an uninterrupted ultrasonic vibration at a heating temperature of 360 ℃, final obtaining a 6063Al joint without enriched-Sn. Under the action of ultrasonic vibrating, the breaking of oxide film , the diffusing of Sn, and dissolving of Al alloy occurred in sequence. It resulted in a transition of bonding interface from Sn/Al to an α-Al/α-Al bonding interface embedded a few Mg 2 Sn partials, after depleting Sn by grain boundary diffusion . The joints possessed a high strength coefficient of 86.7% of 6063Al base metal and 161.8% of soldering joint. The joint had a better corrosion resistance that the tensile strength only reduced 35.3% after a corroding of 72 h in 3.5 wt% NaCl solution in comparison with the soldering joints. Finally, the evolution of the interface structure and mechanism of improving corrosion resistance were discussed in detail. It is a promising technology for manufacturing high-reliable Al/Sn heterogeneous joints.
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JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Liang Zhou,Jie Zhou,Yicen Dong,Yangjie Wu,Zhangying Xi,Zixuan Lu,Juying Lei,Jinlong Zhang,Yongdi Liu
Collaborative treatment of pollutants is a promising approach for wastewater treatment . In this work, a covalent organic framework material (COFs) with an imine structure was synthesised by the Schiff base reaction, and photochemical tests showed good photochemical effects. It was used to explore the photocatalytic treatment of co-existing pollutants (heavy metal ions and antibiotics) and the performance of treating co-existing wastewater was investigated. The degradation performance of levofloxacin (LVX) and Cr(VI) was improved in the coexisting pollutants system, with the LVX degradation being 4.2 times more effective than that of the LVX solitary system. Moreover, this phenomenon was also observed in LVX/Ag(I), LVX/Fe(III), sulfadiazine/Cr(VI), norfloxacin/Cr(VI) and tetracycline/Cr(VI) systems. The analysis of active species suggesting that the synergistic promotion of photocatalytic oxidation-reduction systems was not only promoting from the improvement of simple charge separation, but it was also found that high-valent metal species can act directly in the oxidative decomposition of antibiotics. The interaction of pollutants and intermediates were rationally exploited and confirmed by control experiments and theoretical calculation. This conclusion helps us to re-examine the underlying mechanisms of photocatalytic synchronous oxidation and reduction reactions, simultaneously beneficial for the development of mixed pollutant control processes.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Meng-yuan Ding,Ming-ze Jia,Juan Wang
Green hydrogen production from methanol is a pivotal technology for energy transformation. In this work, the heterojunction structure of NiO–TiO 2 and incorporated Pd/Ir/Ru nanoparticles were successfully prepared through the utilization of sol-gel and in situ photodeposition methods. The highest yield of hydrogen from methanol is contributed by 0.5Pd–1Ni–TiO 2 showing 80.73 mmol g −1 H 2 for 4 h, which is 15.03 times higher than the H 2 yield obtained using TiO 2 . Furthermore, this work reveals that methanol adsorbs in two states: molecular CH 3 OH and dissociated CH 3 O∗, and the main adsorption modes of methanol on the surfaces of TiO 2 , 1Ni–TiO 2 and 0.5Pd–1Ni–TiO 2 exhibit similarities, with bridge adsorption being identified as the most favorable mode. The possible mechanism of the formation of main products was proposed. HCOOH is formed by oxidation of HCHO, or from desorption of formate. The two C–C coupling reactions of ·COOH + ·COOH and ·COOH + ·CH 3 produce CH 3 COOH.
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JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
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2024
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IF 3.6
Qing Yang,Xiaosheng Jin,Yuansen Zhang,Xiaoqiu Wu,Haiying Lin,Tingting Ji,Rongzhou Li
The aim of this study is to investigate the impact of sh-LncRNA ASB16-AS1 on doxorubicin (DOX) resistance in colorectal cancer (CRC). First, an in vitro study was conducted to investigate the effects of LncRNA ASB16-AS1, miR-185-5p, and TEAD1 on drug resistance in CRC cells. Subsequently, utilizing nanotechnology, poly(beta amino esters) (PBAE)/zeolitic imidazolate framework-8 (ZIF-8)@sh-LncRNA ASB16-AS1 nanoparticles (PZSNP) were synthesized and characterized, evaluating their cellular toxicity and hemolytic activity. Finally, a mouse subcutaneous tumor model was established by subcutaneous injection of SW480/DOX cell suspension to investigate the impact of PZSNP on the tumor. Under DOX treatment, downregulation of LncRNA ASB16-AS1, overexpression of miR-185-5p, or downregulation of TEAD1 suppressed the viability and proliferation of drug-resistant CRC cells while promoting apoptosis. Conversely, overexpression of LncRNA ASB16-AS1, inhibition of miR-185-5p, or overexpression of TEAD1 enhanced the viability and proliferation of drug-resistant CRC cells while inhibiting apoptosis. The synthesized PZSNP exhibited a spherical shape with an average particle size of 123.6 nm, possessed positive charge, displayed good stability. It effectively encapsulated shRNA and displayed low cellular toxicity and hemolytic activity. Under DOX treatment, significant tumor necrosis was observed in the PZSNP group, and tumor growth was suppressed without causing weight loss. LncRNA ASB16-AS1, miR-185-5p, and TEAD1 are involved in regulating cell viability, proliferation, and apoptosis, contributing to drug resistance in CRC cells. sh-LncRNA ASB16-AS1 enhances the sensitivity of CRC cells to DOX during treatment, and in vivo delivery of PZSNP may serve as an effective strategy to overcome chemotherapy resistance in CRC.
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ACS Applied Materials & Interfaces
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2024
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IF 8.3
Mengke Tang,Xinyi Song,Cunmin Wang,Liang Jiang,Yuhong Zhou,Yuanchunzhi Wang,Jintuo Zhu,Yanqing Wang,Jiefeng Gao,Xinjian He,Huan Xu
The advancement of intelligent and biodegradable respiratory protection equipment is pivotal in the realm of human health engineering. Despite significant progress, achieving a balance between efficient filtration and intelligent monitoring remains a great challenge, especially under conditions of high relative humidity (RH) and high airflow rate (AR). Herein, we proposed an interfacial stereocomplexation (ISC) strategy to facilitate intensive interfacial polarization for poly(lactic acid) (PLA) nanofibrous membranes, which were customized for machine learning-assisted respiratory diagnosis. Theoretical principles underlying the facilitated formation of the electroactive phase and aligned PLA chains were quantitatively depicted in the ISC-PLA nanofibers, contributing to the increased dielectric constant and surface potential (as high as 2.2 and 5.1 kV, respectively). Benefiting from the respiration-driven triboelectric mechanisms, the ISC-PLA demonstrated a high PM0.3 filtration efficiency of over 99% with an ultralow pressure drop (75 Pa), even in challenging circumstances (95 ± 5% RH, AR of 85 L/min). Furthermore, we implemented the ISC-PLA with multifunction respiratory monitoring (response time of 0.56 s and recovery time of 0.25 s) and wireless transmission technology, yielding a high recognition rate of 83% for personal breath states. This innovation has practical implications for health management and theoretical advancements in respiratory protection equipment.
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PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2025
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IF 7.8
Shaoxiong Song,Shiyu Dong,Yang Liu,Quanhua Xie,Yuanyuan He,Hassan Karimi-Maleh,Nianbing Zhong
In this study, a tube photocatalytic CO 2 reduction reactor was constructed to in situ online decode the surface CO 2 reduction rates of fixed photocatalysts. The photoreactor consisted of a hollow quartz tube with an inner surface coated with a composite photocatalyst of graphitic carbon nitride (g-C 3 N 4 ) and germanium dioxide (GeO 2 ). Subsequently, a fiber Bragg grating (FBG) CO 2 concentration sensor and its detection system were developed for online and accurate in situ detection of the CO 2 concentration on the surface of the photocatalytic film. The sensor system was then used to monitor the effect of the composition and loading of the photocatalyst on the CO 2 reduction rate inside the reactor, as well as operational parameters such as the light intensity and humidity. The results highlighted that the FBG CO 2 concentration sensor could accurately detect CO 2 concentration changes under variable temperature and humidity conditions, with a detection limit of 82 µM and a response time resolution of 102 s. Under the conditions of excitation light with a wavelength of 380–780 nm, light intensity of 50 W, GeO 2 /g-C 3 N 4 photocatalyst loading mass of 0.1 g, and a relative humidity of 90 % RH, the photocatalytic film exhibited high catalytic activity, achieving a CO 2 conversion produces CH 4 , CO and H 2 at rate of 0.37 mM/h. The research findings provide valuable insights for the design and optimization of CO 2 photocatalytic reduction devices, while also advancing the development of comprehensive on-site monitoring techniques for the photocatalytic CO 2 reduction process.
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JOURNAL OF CHEMICAL THERMODYNAMICS
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2024
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IF 2.2
Qiang Zheng,Fuxin Yang,Houzhang Tan,Xiaopo Wang
Deep eutectic solvent (DES) shows excellent absorption performance in the field of CO 2 capture. It is considered as a new green absorption solvent to replace monoethanolamine. In the industry, the presence of water not only affects the structural stability of the solvent, but also affects its thermophysical properties. In this work, three kinds of hydrophobic DES were prepared. Based on the study of their structural characteristics and thermal stability, the density and viscosity of DES with water mixture were measured in the temperature range of 298.15 ∼ 338.15 K at atmospheric pressure. It was demonstrated that the trace water did not destroy the structure of DES, but it formed hydrogen bonds with DES. The increase water destroyed the structure of DES and formed hydrogen bonds with hydrogen bond donor (HBD) and hydrogen bond acceptor (HBA), respectively. Moreover, the hard sphere model was applied to study the viscosity, and after introducing the binary interaction parameter, the average absolute relative deviation of the mixture reduced to 4.4 ∼ 7.7 %.
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CERAMICS INTERNATIONAL
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2024
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IF 5.1
Lu Tang,Siyu Chen,Ying Li,Donghong Wang,Zhiyong Chen,Yi Zuo,Sifan Zong,Jimei Xue,Zhijun Wang,Hanjun Wei
Due to the poor electromagnetic (EM) wave attenuation capability and relatively large bandgap of rare-earth silicate materials, their application as EM wave attenuation materials is adversely affected. In this work, TiO 2 was deposited onto the surface of porous Yb 2 Si 2 O 7 using a precipitation process followed by calcination. A transition from TiO 2 nanorods to nanowires resulted in a flower-like three-dimensional (3D) network structure, effectively modulating the dielectric and EM wave-absorbing properties. The TiO 2 /Yb 2 Si 2 O 7 ceramic (YT-3 sample) with a TiO 2 nanowire content of 20.1 wt% achieved a minimum reflection loss (RL min ) of −21.1 dB at 2.3 mm and an effective absorption bandwidth (EAB) of 2.6 GHz at a thickness of 2.5 mm. Furthermore, the EAB fully covered the X-band at thickness ranging from 2.0 to 4.10 mm. The radar cross-section of the YT-3 sample significantly decreased by 21.5 dBm 2 . This improvement likely attributed to the 3D porous structure formed by the TiO 2 nanowires, which improved the impedance matching and electrical conductivity while increasing both homogeneous interfaces and heterointerfaces. This enhancement facilitated electron transfer and hopping, amplified polarization and conduction losses and promoted multiple EM wave reflections and scattering. Additionally, the weight variation of the YT-3 sample was <0.48 % in the range of 25–1400 °C, demonstrating excellent high-temperature stability. These results advances to the development of Yb 2 Si 2 O 7 -based wave-absorbing materials for achieving effective EM wave absorption in high-temperature environments.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Zhenhao Xia,Xiaoyong Tian,Peipei Xu,Baijie Cheng,Hongyao Xu,Shanyi Guang
In this era of high drug resistance, there is an urgent need for novel antimicrobial agents and strategies to achieve smarter sterilization effects. However, developing an environmentally friendly, controllable, and self-cleaning smart antimicrobial material remains a formidable challenge. In this work, a smart antimicrobial nanoplatform composed of Cu 3 Mo 2 O 9 and MoS 2 has been successfully designed and synthesized. The computational findings reveal that, owing to the interfacial coupling between the two substances at the solid junction, this architecture can effectively absorb near-infrared light, significantly reduce migration resistance, and improve carrier separation efficiency. Empirical observations demonstrate that with a sample concentration of 100 μg/mL, under near-infrared (NIR) laser irradiation, the microenvironmental temperature proximal to the bacteria can be swiftly elevated from 28.6 °C to in excess of 50 °C within a mere 6 min. The overall photothermal conversion efficiency is 32.6 %, and it exhibits an active oxygen level nearly 5 times higher than that of Cu 3 Mo 2 O 9 . Furthermore, the permeability of the cell membrane was greatly improved with the increased temperature, which is beneficial for the generated reactive oxygen species (ROS) entering the bacterial cells. After synergistic antimicrobial treatment, the antibacterial rate against Escherichia coli can reach over 99 %. More importantly, this nano-platform features a unique ’activation’ mechanism that uses NIR as an ’activation switch’ to selectively toggle between ’passive defense,’ ’secondary sterilization,’ and ’active attack’ antibacterial modes as needed. Upon interaction with aqueous environments, its reusability and favorable biocompatibility with terrestrial and aquatic life promise to facilitate the intelligent eradication of deleterious microorganisms in aquatic systems via the diurnal cycle of sunrise and sunset. This is highly significant for the ongoing management and maintenance of public resources such as amusement parks, artificial fish ponds, and urban water features.
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Materials Horizons
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2024
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IF 12.2
Geng Chen,Tao Zhang,Limin Zhang,Kai Tao,Qiang Chen,Hongjing Wu
Interface engineering, by modulating defect distribution and impedance at interfaces and inducing interfacial polarization, has proven to be an effective strategy for optimizing dielectric properties. However, the inherent incompatibility between heterogeneous phases presents a significant challenge in constructing multi-heterointerfaces and understanding how their distribution influences dielectric performance. Herein, we constructed an EGaIn@Ni/NiO/Ga2O3 composite structure by employing a low-intensity ultrasound-assisted galvanic replacement reaction followed by high-temperature annealing. The controlled addition of Ni salts allowed for the fine-tuning of Ni, NiO, and In concentrations and their spatial distribution within the interfacial architecture. Annealing treatment induced a transition from amorphous to crystalline phases, triggering dual relaxation behaviors between EGaIn/Ni and NiO/Ga2O3. Additionally, significant charge accumulation was observed at the NiO/Ga2O3 interface, likely due to the substantial work function difference between Ni and NiO, coupled with the low barrier height between EGaIn and Ni, which facilitates electron migration. Consequently, the optimized samples exhibited a maximum absorption bandwidth of 7.92 GHz, which is the highest among the EGaIn-based absorbers reported in the literature. This work not only elucidates the mechanism by which multi-heterogeneous interfacial distributions regulate the dielectric properties but also provides an effective approach for modulating the electromagnetic wave performance of liquid metals.
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