CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Xizi Wu,Zhixiang Zhai,Jia Wu,Kexin Tan,Zhili Li,Shibin Yin
5-Hydroxymethylfurfural electrooxidation reaction (HMFOR) has attracted increasing attention due to energy conservation and value-added production. It is crucial to design highly active catalysts with fast kinetics and reveal the catalytic mechanism. Herein, the activation of hydroxymethyl/aldehyde groups is tuned on V 2 O 3 -modificated CuCo for efficient HMFOR. Experimental and theoretical results reveal that strong electron transfer occurs on the heterointerface between V 2 O 3 and CuCo, endowing its unique electronic structure and conductivity. Meanwhile, CuCo-V 2 O 3 heterostructure facilitates the modulation of local electron density, charge transfer, and adsorption behavior to promote the activation of hydroxymethyl/aldehyde groups. The higher activation of hydroxymethyl groups than that of aldehyde groups over CuCo-V 2 O 3 induces an altered rate-determining step for HMFOR. Consequently, CuCo-V 2 O 3 presents enhanced HMFOR activity (E 10 , 1.27 V RHE ), reaction kinetics (38 mV dec −1 ), 2,5-furandicarboxylic acid selectivity (99.1%), and stability (40 successive cycles). This work provides a strategy for designing highly active catalysts for synthesizing value-added products.
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高影响因子
ADVANCED MATERIALS
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2024
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IF 27.4
Jianhua Huang,Ziwei Li,Youliang Zhu,Liuli Yang,Xiao Lin,Yi Li,Yizhe Wang,Yazhou Wang,Yi Fu,Weidong Xu,Ming Huang,Dong Li,Anlian Pan
Monolithic integration of color-conversion materials onto blue-backlight micro-light-emitting-diodes (micro-LEDs) has emerged as a promising strategy for achieving full-color microdisplay devices. However, this approach still encounters challenges such as the blue-backlight leakage and the poor fabrication yield rate due to unsatisfied quantum dot (QD) material and fabrication process. Here, the monolithic integration of 0.39-inch micro-display screens displaying colorful pictures and videos are demonstrated, which are enabled by creating interfacial chemical bonds for wafer-scale adhesion of sub-5 µm QD-pixels on blue-backlight micro-LED wafer. The ligand molecule with chlorosulfonyl and silane groups is selected as the synthesis ligand and surface treatment material, facilitating the preparation of high-efficiency QD photoresist and the formation of robust chemical bonds for pixel integration. This is a leading record in micro-display devices achieving the highest brightness larger than 400 thousand nits, the ultrahigh resolution of 3300 PPI, the wide color gamut of 130.4% NTSC, and the ultimate performance of service life exceeding 1000 h. These results extend the mature integrated circuit technique into the manufacture of micro-display device, which also lead the road of industrialization process of full-color micro-LEDs.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2024
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IF 18.5
Zhenzhen Xu,Zhigang Wang,Dingmeng Hu,Huiqin Chen,Yufei Yan,Yuan Li,Mengjing Tu,Qiaofeng Shen,Xuanyi Liu,Rui Li,Cheng Lu,Fei Xue,Congying Xie,Gen Yang
5-Hydroxymethylcytosine in genomic DNA (5hmC-DNA), a predominant epigenetic mark, plays key roles in a broad range of bioprocesses such as cancer progression. However, efficient detection of 5hmC-DNA, especially from highly complex biological specimens, remains a harsh challenge due to its low abundance as well as the serious disturbance of non-targets. Leveraging MXene as the signal booster, an electrochemical biosensing technique is presented here for ultrasensitive detection of 5hmC-DNA from complex biological samples. The developed technique integrates enzyme-catalyzed transform of the hydroxyl group of 5hmC, sequence-specific recognition of the 5hmC-DNA targets, and facile electrochemical reaction. Remarkably, nanosized Ti 3 C 2 T x MXene is introduced as a highly conductive agent, managing to greatly boost the signals. Exhibiting outstanding consistency and robustness, the technique not only achieves excellent linear responses in a broad range of 5hmC-DNA (1.0 × 10 −13 –1.0 × 10 −9 m ) with the lowest detection limit of 59 fM but also possesses excellent selectivity against 5hmC analogs of including cytosine (C)- and 5-methylcytosine (5mC). More importantly, a proof-of-concept validation demonstrates the extraordinary ability of this technique for directly detecting 5hmC-DNA from complex backgrounds including cellular genomic extracts and serum of irradiated or non-irradiated mice, suggesting its highly promising potential for diverse applications such as early cancer screening.
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APPLIED SURFACE SCIENCE
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2024
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IF 6.3
Qiang Fang,Lu Hao,Tao Zhao,Jiahui Li,Genyan Hao,Guang Liu,Dazhong Zhong,Jinping Li,Qiang Zhao
The electrocatalytic production of 2,5-furandicarboxylic acid (FDCA) via the 5-hydroxymethylfurfural oxidation reaction (HMFOR) is an effective and more suitable alternative to the oxygen evolution reaction (OER) in electrocatalytic water splitting. High-valence Ni(III) is critical for the HMFOR, but the formation is greatly limited by the difficult in situ self-oxidation. In this study, the pre-oxidization-derived amorphous NiO x H y nanosheet presents more accessible Ni(III) for efficient HMFOR. In addition, NiO x H y /NF exhibits a low onset potential of 1.35 V, a high FDCA yield of 98.5 %, and a high Faradaic efficiency of 98.3 % for the HMFOR in 0.1 M KOH with 10 mM HMF. In situ Raman spectroscopy results indicate that Ni(III)OOH is an active intermediate in the electrochemical HMFOR. This work provides a strategy for promoting the formation of high-valence Ni(III) and boosting biomass oxidation.
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ACS Sustainable Chemistry & Engineering
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2024
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IF 7.1
Yingyang Song,Junyu Lang,Qingrui Zeng,Jinping Cheng,Mingce Long
Monoethanolamine (MEA)-based carbon dioxide absorption is one of the effective carbon capture, utilization, and storage (CCUS) technologies but is significantly restricted by the high energy consumption in the regeneration of rich amine solution. Solid acid catalysts have the potential to reduce energy consumption, while the exploration of highly active catalysts with abundant Bro̷nsted and Lewis acid sites remains needing. We developed an efficient solid acid catalyst, niobium-modified HZSM-5 (Nb/HZ), to facilitate CO2 desorption from the CO2-captured MEA solutions. The Nb/HZ catalysts with various niobium loadings were synthesized by using an impregnation method. HZSM-5 retained its pore structure and large surface area after niobium incorporation. The catalyst with 4% Nb (4.0-Nb/HZ) has the highest activity and stability, with 61% increase in the desorption rate, 50% increase in the desorbed CO2 amount, and 37% reduction of relative heat duty. According to theoretic calculations and experimental analyses, the Nb/HZ catalyst provides abundant Bro̷nsted and Lewis acid sites to facilitate carbamate adsorption, proton transfer, and carbamate breakdown, thus reducing the activation energy for CO2 desorption. This work provides a valuable solid acid catalyst for amine-based CO2 capture and also brings insights for the development of a novel solid acid for diverse catalysis.
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Journal of the Taiwan Institute of Chemical Engineers
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2018
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IF 3.849
Yue Zhou,Huiping Zhang,Ying Yan
A series of CuO/ZSM-5 catalysts with different copper loadings were prepared by impregnation (IM) and chemical vapor deposition (CVD) methods, respectively. Their physicochemical properties were investigated by N 2 adsorption/desorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectronic spectra (XPS), temperature-programmed reduction by hydrogen (H 2 -TPR) and temperature-programmed desorption of NH 3 (NH 3 -TPD). The XRD and TEM results demonstrated that the crystallite size of the CuO prepared by CVD method was smaller than that by IM, and the XPS results illustrated that the copper specie was mostly in Cu 2+ state and Cu + co-existed. The performance of catalytic oxidation of ethyl acetate was conducted in the fixed-bed reactor based on CuO/ZSM-5 catalysts. The experimental results showed that the preparation method affected the catalytic activity of CuO/ZSM-5; the CVD catalysts exhibited a higher catalytic activity for ethyl acetate oxidation compared with the IM catalysts at the same copper loadings. Ethanol and acetaldehyde are observed to be the intermediate products in the combustion of ethyl acetate over the synthesized catalysts. The relative amounts of acetaldehyde and ethanol are determined by the selectivity of the catalyst toward acetaldehyde production from ethanol. Particularly, the 3 wt% CVD catalyst showed the best catalytic activity for ethyl acetate oxidation with 90% conversion of ethyl acetate at 235 °C, which was much lower than that of the 3 wt% IM catalyst (278 °C), meanwhile, the intermediate products of the 3 wt% CVD for ethyl acetate oxidation were completely oxidized into CO 2 and H 2 O at temperature as low as 288 °C.
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LANGMUIR
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2018
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IF 3.789
Zhigang Yin,Yuehua Hu,Wei Sun,Chenyang Zhang,Jianyong He,Zhijie Xu,Jingxiang Zou,Changping Guan,Chenhu Zhang,Qingjun Guan,Shangyong Lin,Sultan Ahmed Khoso
A novel compound 4-amino-5-mercapto-1,2,4-triazole was first synthesized, and its selective adsorption mechanism on the surface of chalcopyrite was comprehensively investigated using UV–vis spectra, zeta-potential, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy measurements (XPS), time-of-flight secondary ion mass spectrometry (ToF-SIMS), and first principles calculations. The experimental and computational results consistently demonstrated that AMT would chemisorb onto the chalcopyrite surface by the formation of a five-membered chelate ring. The first principles periodic calculations further indicated that AMT would prefer to adsorb onto Cu rather than Fe due to the more negative adsorption energy of AMT on Cu in the chalcopyrite (001) surface, which was further confirmed by the coordination reaction energies of AMT-Cu and AMT-Fe based on the simplified cluster models at a higher accuracy level (UB3LYP/Def2-TZVP). The bench-scale results indicated that the selective index improved significantly when using AMT as a chalcopyrite depressant in Cu−Mo flotation separation.
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高影响因子
ChemCatChem
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2025
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IF 3.9
Long Zhang,Linjie Guan,Jiashu Liu,Song Song,Ye Tian,Xingang Li
Graphical N-ZSM-5–40 nanosheet zeolites prepared by seed-induced growth coupled with mineralization agent assisted method exhibited remarkable activity and stability in conversion of lactic acid to lactide. Enhanced diffusion and accessible Brønsted acid sites amount benefit the production of lactide. Lactide (LD) is the key building block of high-quality polylactic acid (PLA), a biodegradable polymer with broad industrial applications. Developing an efficient catalyst for one-step conversion of lactic acid to LD is critical for the PLA industry. Herein, N-ZSM-5–40 nanosheets with a thickness of about 20 nm were successfully synthesized and first applied to this esterification reaction. The yield of LD over N-ZSM-5–40 reaches 60.5% after reaction at an oil bath temperature of 140 °C for 5 h. Systematic characterization revealed that reducing the b-axis thickness of MFI-type nanosheet zeolites improves Brønsted acid sites (BASs) accessibility, which was identified as a critical factor governing the yield of LD. Time-dependent product distribution experiments demonstrate that the nanosheet structure of N-ZSM-5–40 facilitates faster cyclization of L 2 A to LD, compared to commercial C-ZSM-5–40. In-situ FTIR results reveal that N-ZSM-5–40 nanosheets have a strong ability to adsorb and activate carbonyl groups, which promotes the rapid conversion of lactic acid to LD. Given the aforementioned advantages, ZSM-5 nanosheets hold great potential for guiding the development of industrial catalysts for sustainable LD synthesis.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Luxiao Zhou,Kun Gao,Huahua Yu,Ronge Xing,Song Liu,Weixiang Liu,Pengcheng Li,Yukun Qin
Chitin is a class of biomass second only to cellulose in abundance, and the preparation of platform compounds from chitin holds great promise. Herein, a pretreatment biphasic solvent system and a catalytic two-stage process are combined for the direct synthesis of 5-hydroxymethylfurfural (HMF) from chitin. The first step of the process, i.e., the pretreatment of chitin with a CH 3 OH/CaCl 2 solution, alters the structure of chitin, allowing it to be depolymerized more easily. In the second step of the process, a green and recyclable biphasic catalytic solvent system comprising a formic acid solution and n-butanol is prepared using pretreated chitin (Ca-PC) as the starting reactant, realizing an HMF yield of 47.65 % in 32 min. This HMF yield surpasses that reported in the literature (19.3 %–30 %). The synergistic interaction of Ca 2+ , introduced via formic acid pretreatment, is the key to the catalytic system of chitin, which disrupts the internal hydrogen bonding of chitin and simultaneously improves HMF selectivity. In summary, we have promoted the depolymerization of chitin using a simple and effective pretreatment process, designed a catalytic system with a green recyclable reaction, and effectively improved the yield of HMF directly prepared from chitin.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Xin Li,Jianguo Wu,Dong Cao,Daojian Cheng
Regulating catalyst component is necessary to improve the catalytic efficiency of selective hydrogenation for 5-hydroxymethylfurfural (HMF). Here, we precisely construct PtSn bimetallic alloy catalysts with different Pt/Sn atomic ratios by a deposition–precipitation strategy. Importantly, a volcano-type relationship between the PtSn alloy component and catalytic activity is disclosed during the selective hydrogenation of HMF. Remarkably, the Pt3Sn1 alloy catalyst exhibits the highest catalytic activity compared to that of other samples, which could achieve 99.1% HMF conversion and 98.1% 2,5-bis (hydroxymethyl) furan selectivity. Moreover, the turnover frequency of Pt3Sn1 catalyst is 1952 h–1, which is about 6 times as high as that of pure Pt catalyst. Further studies reveal that the introduction of Sn could change the electronic structure of Pt atoms. Different Pt/Sn atomic ratios result in different extents of charge transfer from Sn to Pt. The Pt sites in Pt3Sn1 show moderate changes in electronic structure, which enhance the adsorption of the reactants and thus boost the intrinsic catalytic activity. This work provides a novel insight to optimize the component of catalysts in various reactions.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Ting He,Shanshan Zhang,Yang Zhu,Jiangwei Chen,Xiaoyun Wang,Qingguo Li,Rizhi Chen,Wenbo Pei,Xin Chen,Haibao Duan,Zhaoliang Cui
Extracorporeal CO 2 removal (ECCO 2 R) is a type of extracorporeal life support (ECLS) technology. It aims to remove carbon dioxide (CO 2 ) from small flow of the blood and correct hypercapnia and related acidosis. The ECCO 2 R system removes CO 2 retained in the patient’s body through the gas-blood exchange membranes, which in use, blood flows on the outside of the membrane, and the inside of the membrane is for gas flow. Existing ECCO 2 R system generally improves the emission rate of CO 2 by the increase of the gas flow rate. However, there is a problem that O 2 is simultaneously taken out, which will reduce the blood O 2 concentration. Therefore, the gas-blood exchange membranes should not only increase the CO 2 removal rate by the improvement of CO 2 /O 2 selectivity, but also retain more O 2 in the blood and then maintain the oxygen saturation of the blood. In present work, a method was proposed to fabricate COF-5/Pebax mixed matrix membranes (MMMs) on the PMP surface for enhancing CO 2 /O 2 selectivity, which was increased from 0.96 to 5.57. The CO 2 removal ability of COF-5/Pebax MMM was tested by blood circulation, and it was found that the CO 2 removal effect was increased 10.9% than that of the pristine membranes. The O 2 concentration was maintained at a higher level, about 1.69 times that of the pristine membranes. In contrast to the pristine PMP membrane, blood compatibility of COF-5/Pebax MMMs was improved because protein adhesion decreased by 44.75%. The results of cytotoxicity test and rabbit pyrogen test exhibited that the prepared COF-5/Pebax MMM presented great biosafety. Overall, the proposed COF-5/Pebax MMM has good performance in ECCO 2 R system and attractive potential for medical application.
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高影响因子
Frontiers in Immunology
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2026
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IF 7
Yulin Wen,Shuangye Li,Jincan Jian,Jiahui Liu,Shuai Wang,Haomeng Wu
Background5-Aminosalicylic acid (5-ASA) is a first-line therapy for ulcerative colitis, but whether dosing timing influences its therapeutic efficacy remains unclear. This study aims to investigate the chronopharmacological effects of 5-ASA in experimental colitis.MethodsA dextran sulfate sodium (DSS)-induced colitis model was used to compare the therapeutic effects of 5-ASA administered at different Zeitgeber times. Colonic proteomic profiling was performed to identify circadian-responsive proteins associated with differential drug efficacy. Intestinal epithelial-specific Bmal1 knockout mice were used to determine whether the circadian clock regulates the chronopharmacological response to 5-ASA.Results5-ASA showed marked time-dependent efficacy in DSS-induced colitis, with greater protection at ZT14 than at ZT2. Proteomic analysis identified ferritin heavy chain 1 (FTH1) as a circadian-responsive protein associated with differential treatment outcomes. 5-ASA suppressed FTH1 expression, whereas FTH1 overexpression attenuated anti-inflammatory effects of 5-ASA. Moreover, intestinal epithelial-specific deletion of Bmal1 largely abolished diurnal variation in both FTH1 expression and 5-ASA efficacy, indicating that the intestinal clock coordinates the time-dependent response to 5-ASA.ConclusionThese findings identify FTH1 as a circadian-responsive factor linked to the time-dependent efficacy of 5-ASA and support circadian-guided optimization of 5-ASA administration as a potential strategy for improving UC treatment.
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危险品化学品经营许可证（带存储）