CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2025
·
IF 3.9
Chenhui Hu,Kaimin Du,Zuoxi Zhuo,Chunhong Liu,Hongbing Lv,Wanjue Wang
To address the challenges of efficient and safe denitrification under actual flue gas conditions of internal combustion engine, high-temperature SCR molecular sieve catalyst were prepared and evaluated both in laboratory scale and industrial scale. A comprehensive characterization via TG, XRD, N₂ adsorption-desorption, SEM, and TEM confirmed the robust thermal stability of the molecular sieves catalyst. The molecular sieve catalyst system was commissioned in a 4275 kW distributed natural gas internal combustion engine demonstration facility and successfully passed the 72 h trial running, achieving with over 94 % NO x conversion efficiency and less than 40 mg/m 3 outlet NO x concentration at a temperature range of 440–525 °C. Compared to conventional V-based catalyst, the molecular sieve catalyst not only achieved additional reductions of 2 kg/h NO x and 38 kg/h CO 2 emissions, along with a nearly 2 % improvement in internal combustion engine efficiency, but also effectively mitigated the risk of system shutdown caused by low cylinder temperatures in exhaust gas purification systems, being considered as a promising catalyst for high-temperature applications, including gas-fired, hydrogen/ammonia-fueled, and biogas internal combustion engines.
研究领域:
环境催化
·
能源工程
·
污染控制技术
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
·
2025
·
IF 26
Kun Li,Anjun Hu,Ruizhe Xu,Wang Xu,Borui Yang,Ting Li,Yuanjian Li,Zhi Wei Seh,Jianping Long,Shimou Chen
Ionic liquids (IL)-based quasi-solid polymer electrolytes (QSPEs) hold promise for safe lithium metal batteries owing to their tunable electrochemical properties and processability. However, traditional design strategy has ignored the interdependencies among “component-function-interface”, leading to compromised practical applications hindered by sluggish lithium-ion transport kinetics and safety concerns. Herein, a triadic molecular synergy paradigm is proposed to decouple lithium-ion conduction mechanisms in flame-retardant QSPEs. Pentaerythritol tetraacrylate-lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) provides the structural framework, while the IL (1-butyl-3-methylimidazole bis (trifluoromethylsulfonyl) imide, BmimTFSI) as a plasticizer softens the polymer chains by weakening the intermolecular forces to provide an additional ion-transport pathway while imparting flame-retardant properties. Additionally, the highly electronegative fluorine atoms of the additive (2-(perfluorohexyl)ethyl methacrylate, PFMA) promote LiTFSI dissociation through electron cloud migration, simultaneously immobilizing TFSI⁻ anions and suppressing cationic competition through strong PFMA−Bmim + coordination. As a proof-of-concept, this synergistic design achieves a high lithium-ion transference number (0.72), forms a stable lithium fluoride-dominated interphases, and enhances battery safety via a condensed-phase flame-retardant mechanism. Experimental validation demonstrates that the designed quasi-solid electrolyte significantly enhances cycling stability in Li symmetric cells, Li||LiFePO 4 and Li||LiNi 0.8 Co 0.1 Mn 0.1 O 2 cells. The proposed molecular engineering strategy establishes a paradigm for developing high-performance QSPEs in lithium metal batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2023
·
IF 20.4
Yansen Zheng,Weicai Zhang,Jiuqing Gui,Qiaoying Cao,Yongyin Wang,Yuehua Xu,Yingliang Liu,Yeru Liang
Demands for safe and compact electrochemical energy storage inspire hot pursuit of development of solid-state lithium-metal batteries (SSLMBs). However, several challenges, including high reaction activity of lithium metal anode and suboptimal comprehensive performance of solid-state electrolytes, hinder SSLMBs for broad applications. Herein, we propose the ingenious construction and application of polyvinylidene chlorid-based composite (PVDC C) as a two-in-one functional material that simultaneously protects the lithium metal anode from air/water corrosions and acts as solid-state electrolyte. On the basis of standout barrier and fine ion-permeability of PVDC, the as-constructed PVDC-based composite exhibits both excellent high air/water stability and high ionic conductivity in wide temperature range ( e.g. , 5.02 × 10 −4 S cm −1 at 25 °C and 3.92 × 10 −4 S cm −1 at 0 °C), thus contributing to remakable electrochemical performances in SSLMB, especially under a low temperature. For instance, at 0 °C, a reversible average discharge capacity of 95 mAh g −1 at 0.3 C with high capacity retention (99%) after 300 cycles can be accomplished. More encouragingly, the PVDC C with two-in-one functionality enables the access of assembling safe SSLMBs in ambient air. This proof-of-concept study offers fresh insights for tailoring the functional materials with both effective lithium protective layer and advanced solid-state electrolyte to facilely achieve high-performance SSLMBs.
研究领域:
材料科学
·
能源存储
·
电池技术
✓ 已验证
DOI
高影响因子
Foods
·
2025
·Vol. 14
·期 5
·835
·
IF 5.1
Chuling Liu,Li Cheng,Mingtian Yang,Zhengli He,Yanan Jia,Li Xu,Yuansong Zhang
Monascusis a fungus widely used in food fermentation. This study employed microbial technology, combined with microscopic morphological observations and ITS sequence analysis, to isolate, purify, and identify 10 strains of red yeast mold from variousMonascusproducts. After the HPLC detection of metabolic products, the M8 strain containing the toxic substance citrinin was excluded. Using the EWM-TOPSIS model, the remaining nine safeMonascusstrains were evaluated for their inhibitory activities against pancreatic lipase, α-glucosidase, α-amylase, and the angiotensin-converting enzyme. The M2 strain with the highest comprehensive scores for lowering blood sugar, blood lipids, and blood pressure was selected. Its fermentation product at a concentration of 3 mg/mL had inhibition rates of 96.938%, 81.903%, and 72.215%, respectively. The contents of the blood lipid-lowering active substance Monacolin K and the blood sugar and blood pressure-lowering active substance GABA were 18.078 mg/g and 5.137 mg/g, respectively. This strain can be utilized for the biosynthesis of important active substances such as Monacolin K and GABA, as well as for the fermentation production of safe and effective functional foods to address health issues like high blood lipids, high blood sugar, and high blood pressure in people. This study also provides insights into the use of natural fungi to produce healthy foods for combating chronic diseases in humans.
研究领域:
微生物学
·
食品科学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2024
·
IF 6.7
Yi Zhao,Mengyu Wang,Naixing Liang,Yaru Wang,Zhi Li,Xiao Li
Asphalt pavements are extensively utilized in tunnel pavement owing to comfortable driving, low noise, short-time construction, and simple maintenance. However, asphalt is a flammable material. To enhance fire retardancy of styrene-butadiene-styrene asphalt (SBSA) and its mixture with a preserved pavement performance, a novel hierarchical core-shell architectured fire retardant, cyclic cross-linked polyphosphazene-functionalized magnesium hydroxide (MH@CPZN), was validated via a chemically guilding assembly in this study. The fire retardancy and smoke suppression properties of SBSA containing MH@CPZN were found to be significantly improved.The MH@CPZN (10 wt%)-incorporated SBSA presented a remarkably higher limiting oxygen index (LOI) of 27.4 % relative to 21.5 % of SBSA with MH and 19.8 % of neat SBSA. In parallel, cone calorimeter test results showed that the peak heat release, peak smoke production rate and CO production of SBSA after an inclusion of 10 wt% MH@CPZN were reduced by 40 %, 35 % and 27 %, respectively, with a 20 s delayed ignition time. A large-scale fire test of asphalt mixture revealed a significant suppression of flame propagation after an addition of MH@CPZN. Moreover, the char yield at 800 °C was significantly increased to 24.1 wt% relative to 14.1 wt% of neat SBSA. A comprehensive analysis demonstrated a co-existence of multi-scale optimization of char microstructure in the condensed and radical quenching due to an interface-located polyphosphazene. Additionally, the high-temperature deformation resistance of SBSA was effectively enhanced after the incorporation of MH@CPZN. In perspective, a hierarchical assembly based on polyphosphazene and metal hydroxides exploits a facile yet practical route for multifunctionally reinforcing asphalt and its mixture with well-preserved fire retardant and pavement performance.
研究领域:
材料科学
·
土木工程
·
火灾安全工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Siyuan Xie,Jianwei Wang,Kui Liu,Zhongyuan Guo,Xiaohan Fang,Chenyu Wen,Yufen Xie,Gang Qin,Jia Yang,Qiang Chen
To meet the demands of wearable electronics, flexible supercapacitors based on gel polymer electrolyte (GPE) have attracted significant interest. Herein, a physically cross-linked double network polyvinyl alcohol-sodium alginate-CoSO 4 GPE was developed. The multivalence ion Co 2+ was utilized as charge carrier for the first time, resulting in exceptional conductivity (3.7 S/m). On the other hand, Co 2+ functioned as an ion crosslinker, constructing a double network structure, endowing the GPE with outstanding mechanical properties. Furtherly, polyaniline was in-situ synthesized on the GPE surface to fabricate an integrated supercapacitor. The integrated configuration provided a seamless electrode/electrolyte interface, significantly reducing interface resistance and improving specific capacitance (169 mF/cm 2 ) and energy density (60 μWh/cm 2 ). Notably, benefiting from this unique structure, the supercapacitor exhibited remarkable deformation adaptability and security without slippage and delamination among multilayers. This GPE and integrated supercapacitor offered a novel preparation strategy for wearable energy storage devices, demonstrating application potential in flexible electronics.
研究领域:
材料科学
·
能源存储
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2024
·Vol. 26
·期 12
·7140-7155
·
IF 9.3
Yunhan Bai,Jianqi Tang,Xiaoshu Ding,Xinqiang Zhao,Yanji Wang
Given the enormous safety risks and environmental pollution that restrict the green development of isocyanate produced by phosgene reactions, we propose a new green and intrinsically safe route for synthesizing diisocyanates containing the furan ring from 5-hydroxymethylfurfural. In this work, the following novel reactions have been systematically investigated, including synthesizing a new compound methyl furan-2,5-dimethylene dicarbamate (FDC) using 2,5-bis(aminomethyl)furan (BAF) and dimethyl carbonate (DMC), the selective hydrogenation of FDC to a new compound methyl tetrahydrofuran-2,5-dimethylene dicarbamate (THFDC), and FDC and THFDC catalytic decomposition to produce corresponding furan-2,5-dimethylene diisocyanate (FDI) and tetrahydrofuran-2,5-dimethylene diisocyanate (THFDI). The results showed that CH3ONa could effectively catalyze the synthesis of FDC from BAF and DMC, and the separation yield of FDC was 98.1% under mild conditions including a nBAF : nDMC ratio of 1 : 10 at 70 °C for 4 h. CH3ONa can be recycled up to four times with high stability. A 0.5% Pd/γ-Al2O3 catalyst with low Pd loading was prepared, and it showed high catalytic activity and stability for FDC hydrogenation to THFDC, with a THFDC yield of 99.9% at 100 °C, 2 MPa H2 and 1 h, and the catalyst could be reused after simple treatment with ethanol. The structure–activity relationship of supported Pd catalysts was studied. The conditions for the thermal decomposition reactions of FDC and THFDC were optimized, resulting in FDI and THFDI yields as high as 89.6% and 92.8%, respectively. Owing to the urgent need for raw materials sustainability and environmental friendliness, the brand-new safe pathway for synthesizing FDI and THFDI was constructed, significantly improving the competitiveness of the non-phosgene method in preparing bio-based isocyanate.
研究领域:
化学工程
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2025
·
IF 14.3
Yapeng Zheng,Tianyang Cui,Jingwen Wang,Yuan Hu,Zhou Gui
Flexible temperature sensors that can detect and transmit subtle thermal fluctuations are essential for critical cold-chain monitoring and safety assurance. However, realizing intrinsically soft materials with high temperature sensitivity and durability remains challenging. Prevailing approaches embed rigid thermoresponsive fillers into compliant matrices, resulting in limited sensitivity, poor long-term stability, and inadequate scalability under demanding cold-chain conditions. Herein, we report a coordination-driven design strategy leveraging metal-ligand dynamics within tailored polymerizable and deep eutectic solvent systems to construct P(N,N-dimethylacrylamide-co-vinylphosphonic acid)/Lithium bis(trifluoromethanesulphonyl)imide/ZnCl 2 /glycerol eutectogels. The resulting flexible eutectogel-based temperature sensor exhibits an ultrahigh thermal sensitivity (temperature coefficient of resistance: −28.43%°C −1 ), an ultrafine temperature resolution (0.10°C), excellent linearity ( R 2 = 0.989), and robust stability (> 30000 s) across a broad operational range (−5 to 100°C). These characteristics enable precise detection and early warning of abnormal temperature excursions pertinent to cold-chain safety. Furthermore, an integrated intelligent monitoring module supports real-time multi-threshold warning capabilities throughout the cold supply chain. Collectively, this work establishes dynamic metal-ion coordination-engineered eutectogels as a generalizable and flexible platform dedicated to high-resolution, ultrasensitive temperature sensing, early warning, and safety management in cold-chain logistics.
研究领域:
材料科学
·
传感器与检测技术
·
智能物流
·
温度传感
·
柔性电子学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yanying He,Baobin Mi,Cheng Luo,Honglin Tao,Xin Zhang,Jinwen Yu,Xueying Mo,Jian Hu,Long Chen,Naimei Tu,Fangfang Wu
The scarcity of arable land and the problem of food security urgently called for a strategy of Remediation-by-Production (RBP). Biochar is a promising method for addressing Cd-contaminated soils, but the time required for remediation and the variability of long-term performance have a direct impact on the realization of the RBP strategy. We have developed a novel approach for remediating cadmium-contaminated flooded soil by utilizing lignin biochar (LBC) in combination with safe rice cultivation. The addition of 1 % LBC achieves efficient Cd passivation (CP: 90.89 %) before rice Cd uptake peaks. Meanwhile, LBC can increase soil organic matter and alter microbial community structure, decreasing the relative abundance of soil pathogenic bacteria from 5.12 % to 4.03 % while raising nutritional bacteria from 15.18 % to 28.82 %. Furthermore, LBC successfully reduced the accumulation of Cd in rice grains by 31.3 % ∼ 54.6 %, making rice dwarf, sturdy, and greener, and lowering the health risk coefficients of Cd across various age groups by Monte Carlo simulations. This study elucidated the critical role of humic substances of LBC in remediation time and performance and laid a solid theoretical foundation for promoting the application of biochar in soil contamination remediation and simultaneously realizing the safe production of crops.
研究领域:
环境科学
·
农业
·
土壤学
·
微生物学
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2020
·
IF 0
Kunlei Zhu,Qian Li,Zhongmeng Xue,Qi Yu,Xicheng Liu,Zhongqiang Shan,Kai Liu
High cost, low safety, and low capacity are critical factors limiting the wide application of lithium (Li) batteries in our daily life. TiO2 and LiMn2O4 are both advanced electrode materials with advantages of low cost and high safety. Although TiO2/LiMn2O4 full batteries have been reported by several groups, these batteries only deliver low areal capacities (<1 mA cm–2), which is far from the criterion of commercially available Li-ion batteries (at least 2 mA cm–2). Here, we report high-areal-capacity TiO2/LiMn2O4 full batteries using a configuration containing anodes of mesoporous TiO2 spheres and cathodes of LiMn2O4 nanorods. Specifically, mesoporous TiO2 spheres are prepared by an improved solvothermal method, and their electrochemical performance is investigated using Li/TiO2 half-batteries. Because of their high specific areas, abundant pores, and stable structures, the mesoporous TiO2 spheres demonstrate remarkable cycling performances: after a test period as long as ∼1000 h, they still deliver a capacity as high as 150 mAh g–1 beyond 500 cycles at 1 C (1 C = 170 mAh g–1). LiMn2O4 nanorods are fabricated using β-MnO2 nanorods as the precursor, and their electrochemical performances are studied using Li/LiMn2O4 half-batteries as well. Furthermore, we design TiO2-limited TiO2/LiMn2O4 full batteries and investigate their electrochemical performances. The mesoporous TiO2 sphere/LiMn2O4 nanorod full batteries exhibit areal capacities as high as ∼4 mA cm–2, which is much higher than the values of conventional TiO2/LiMn2O4 full batteries and comparable to those of commercially available Li-ion batteries. This work could make a substantial step toward the commercialization of TiO2/LiMn2O4-based full batteries.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
POLYMER
·
2026
·
IF 5.1
Xiao Luo,Lianglian Zhao,Weixun Ma,Changji Dong,Xiaobo Yang,Xingmao Duo,Xinghong Duo,Yakai Feng
In this study, a stimuli-responsive microcapsule flame retardant material, MgO@SiO 2 @rGO-β-CD, was successfully designed and prepared, and it was applied to polyvinyl chloride (PVC) to construct high-performance MgO@SiO 2 @rGO-β-CD/PVC composites. Amorphous SiO 2 was coated on the surface of MgO by the sol-gel process to form MgO@SiO 2 core-shell structure. Subsequently, the composite of reduced graphene oxide (rGO) and β-cyclodextrin (β-CD) was anchored on the surface of MgO@SiO 2 by ultrasound-assisted assembly to construct a multifunctional outer layer. The structure achieves stable binding through Si– O –Mg covalent bond and hydrogen bond interaction, and uses π-π stacking and hydrogen bond interaction to form a GO/β-CD dynamic outer layer to achieve controllable loading and release of dispersant polyethylene glycol (PEG). The microcapsule material triggers GO oxidative decomposition and β-CD/PEG inclusion complex dissociation above 250 °C, releasing the inner MgO and forming a carbon layer. When the addition amount was only 6 wt%, MgO@SiO 2 @rGO-β-CD/PVC composites exhibited excellent flame retardant and smoke suppression properties: The peak heat release and total heat release were reduced by 56% and 55%, respectively, compared with pure PVC. The limiting oxygen index of the composite was increased to 30.1% and passed the UL-94 V-1 rating. The microstructure characterization confirmed that the stimuli-responsive microcapsule flame retardant material MgO@SiO 2 @rGO-β-CD was uniformly dispersed in the matrix, and its multi-layer structure could catalyze the formation of a continuous and dense intumescent carbon layer during the combustion process, exerting the synergistic flame retardant mechanism of gas phase quenching, condensed phase barrier, and catalytic carbon formation.
✓ 已验证
DOI
高影响因子
Acta Biomaterialia
·
2024
·
IF 9.4
Xiaopeng Yang,Songli Zhou,Jingyi Zeng,Suqin Zhang,Meng Li,Feifan Yue,Zhaoyi Chen,Yanming Dong,Yingchun Zeng,Jingwen Luo
ABSTRACT The development of melanoma is closely related to Braf gene, which is a suitable target for CRISPR/Cas9 based gene therapy. CRISPR/Cas9-sgRNA ribonucleoprotein complexes (RNPs) stand out as the safest format compared to plasmid and mRNA delivery. Similarly, lipid nanoparticles (LNPs) emerge as a safer alternative to viral vectors for delivering the CRISPR/Cas9-sgRNA gene editing system. Herein, we have designed multifunctional cationic LNPs specifically tailored for the efficient delivery of Cas9 RNPs targeting the mouse Braf gene through transdermal delivery, aiming to treat mouse melanoma. LNPs are given a positive charge by the addition of a newly synthesized polymer, deoxycholic acid modified polyethyleneimine (PEI-DOCA). Positive charge enables LNPs to be delivered in vivo by binding to negatively charged cell membranes and proteins, thereby facilitating efficient skin penetration and enhancing the delivery of RNPs into melanoma cells for gene editing purposes. Our research demonstrates that these LNPs enhance drug penetration through the skin, successfully delivering the Cas9 RNPs system and specifically targeting the Braf gene. Cas9 RNPs loaded LNPs exert a notable impact on gene editing in melanoma cells, significantly suppressing their proliferation. Furthermore, in mice experiments, the LNPs exhibited skin penetration and tumor targeting capabilities. This innovative LNPs delivery system offers a promising gene therapy approach for melanoma treatment and provides fresh insights into the development of safe and effective delivery systems for Cas9 RNPs in vivo . Statement of significance CRISPR/Cas9 technology brings new hope for cancer treatment. Cas9 ribonucleoprotein offers direct genome editing, yet delivery challenges persist. For melanoma, transdermal delivery minimizes toxicity but faces skin barrier issues. We designed multifunctional lipid nanoparticles (LNPs) for Cas9 RNP delivery targeting the Braf gene. With metal microneedle pretreatment, our LNPs effectively edited melanoma cells, reducing Braf expression and inhibiting tumor growth. Our study demonstrates LNPs' potential for melanoma therapy and paves the way for efficient in vivo Cas9 RNP delivery systems in cancer therapy.
研究领域:
癌症生物学
·
基因治疗
·
纳米技术
·
分子生物学
·
药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）