Surfaces and Interfaces
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2024
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IF 5.7
Xiongwei Dong,Qi Sun,Xincan Shi,Zixiong Yin,Beini Zeng,Zheng Huang,Xiang Li
Lyocell fibers, the most successful regenerated cellulose fibers, have already attracted much attention. However, the use of traditional Lyocell fibers in the field of personal protective equipment (PPE) is limited, due to the lack of antibacterial properties. Additionally, the flame-retardant properties of Lyocell fibers are also required for the specific applications. Here, we co-conjugated phosphorus flame retardants and copper-thiosemicarbazone complexes with antibacterial performance on Lyocell fibers through chemical crosslinkers. The chemical composition and morphology of our engineered Lyocell fibers were fully characterized, and their mechanical properties were also maintained. Flame retardants can import flame-retardant properties (LOI: 25.0 % - 25.7 %) to Lyocell fibers, which also show promising antibacterial activity , suppressing Escherichia coli (GIR: 20.51 % - 66.67 %) and Staphylococcus aureus (GIR: 74.19 % - 93.54 %). Such an improved sustainable formulation can be used to produce the next-generation of Lyocell-based PPE, to meet the demand for the antibacterial and flame-retardant properties of fibers in special applications.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Kaihui Ma,Junyi Deng,Qinghui Wu,Peng Hu,Shuxing Qiu,Mao Chen,Jian Xu
Using clean energy in the ironmaking industry is expected to reduce the negative impacts on our environment. H 2 , one of the most important clean energies, has a great potential to partially replace CO in the blast furnace process, thus cutting down CO 2 emission. In order to unravel the distinct effects on the shrinkage behaviour between CO and H 2 , four binary- FeO-rich oxides and four ternary- FeO-rich oxides were employed to compare their performance under the simulated blast furnace cohesive zone conditions. The results show that the formed olivine and solid solution have the intention to dominate the shrinkage of packed bed below 900 °C, while the formed spinel compounds with higher melting point determine the shrinkage above 1300 °C. In comparison to CO, H 2 has a faster gaseous reduction rate. Therefore, the higher quantity of reduced iron and less disintegration of coke in the packed bed simultaneously suppresses the shrinkage between 900 °C and 1000 °C. Besides, the much slower iron carbonization rate in H 2 postpones the re-accelerating of shrinkage as a result of melting and dripping to higher temperatures.
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ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Tianyun Jing,Shaokang Yang,Tingting Li,Yangyang Wan,Huimin Jia,Yonghai Feng,Yunpeng Zuo,Dewei Rao
Atomic scaling of cobalt-based catalysts is the feasible and sustainable approach for selective oxidation of biomass-derived 5-hydroxymethylfurfural (HMF) to produce bio-plastic monomer of 2,5-furandicarboxylic acid (FDCA) under mild conditions. Here, a high-efficiency dual single-atomic Co/Cu supported on nitrogen-doped carbon (a-Co/Cu-NC) is constructed. Leveraging exceptional oxygen activation ability, the Co/Cu dual-atomic-sites can accelerate the HMF oxidation, suppressing by-product formation mediated by reactive oxygen species (ROS) in low-oxygen environments. This leads to enhanced FDCA selectivity with a yield of 98% and a production rate of 298.8 mmol FDCA g metal −1 h −1 under ambient conditions. Comprehensive experiments and density functional theory (DFT) calculations demonstrate that long-range interactions between Co and Cu sites optimize reactant adsorption and lower energy barriers for •O 2 − and HMFCA formation.
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Catalysis Science & Technology
·
2024
·
IF 4.4
Xuewei Tu,Can Sun,Yang Hu,Yutong Chen,Shouxin Zhu,Jingyi Qu,Zhexiao Zhu,Xiang Zhang,Hui Zheng
Cycloaddition of CO2 and epoxides to synthesize cyclic carbonates via photothermal catalysis represents one of the effective strategies for achieving carbon neutrality. In this study, a facile one-step hydrothermal method was employed to synthesize a bimetallic photothermal catalyst FeCo@BPDC. This catalyst demonstrates remarkable efficiency in fixing CO2 to synthesize cyclic carbonates under atmospheric pressure and solvent-free conditions. Through comprehensive characterization and experimentation, the indispensability of bimetallic active sites has been convincingly demonstrated. Additionally, the incorporation of organic ligands significantly enhances the concentration of oxygen vacancies within the catalyst, thereby endowing it with excellent photocatalytic performance. This study presents a novel perspective for the design of photothermal catalysts that convert CO2 into value-added chemicals under mild conditions.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Zhipeng Li,Ruochun Zhang,Jun Huang,Dandan Yu,Zhanjun Cheng,Guanyi Chen,Peizhe Sun
The continuously growing of municipal solid waste (MSW) has posed a threat to human-being. Pyrolysis is a promising technique for MSW disposal, as it can reduce its volume and produce valuable products as well. This study evaluated the potential of carbon residue (CR) derived from waste carton as soil amendment. Additionally, considering the waste plastics, such as plastic bags, plastic tape, etc., can mix with carton in MSW, the effect of polyvinyl chloride (PVC) addition on the characteristics of CR and its environmental behavior was measured. Results showed that the CR derived from carton exhibited notable efficacy in adsorbing Cd 2+ (56.111 mg/g), pesticides and PO 4 3− (0.231 mmol/g), thereby mitigating pollutants and immobilizing nutrient in soil environment. The introduction of PVC was found to enhance the adsorption of CR for Cd 2+ (65.623 mg/g) and PO 4 3− (0.524 mmol/g), albeit exhibiting diminished performance in the removal of pesticides. Different from previous studies, this study revealed that the dissolved black carbon (DBC) released from CRs did not generate reactive oxygen species (ROS) effectively under solar irradiation, and the light screening of DBC can mitigate the photodegradation of pollutants. Furthermore, both CRs increased bacterial luminescence by approximately 70%, which indicated that no toxicity produced during the pyrolysis process. And gas chromatography-mass spectrometry (GC-MS) revealed the absence of polyaromatic hydrocarbon (PAH) in CRs. In summary, this study may provide some new insights on the disposal of MSW, and the CR made by MSW could be effective in soil amendment and reduce the leaching of pollutants and nutrient.
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ACS Applied Materials & Interfaces
·
2024
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IF 8.3
Hongyuan Chuai,Haibei Yang,Sheng Zhang
Ni single-atom-decorated nitrogen-doped carbon materials (Ni–Nx-C) have demonstrated high efficiency in the electrochemical reduction of CO2 (CO2RR) to CO. In this study, Ni–Nx-C active sites were embedded within a carbon membrane via an electrospinning and pyrolysis process. The resulting self-supported carbon membrane hosting Ni–Nx-C sites could be directly utilized as an electrode for the CO2RR. To enhance the CO2RR performance of the carbon membrane, the porous structure of the carbon membrane was fine-tuned by incorporating a pore-forming agent. The optimized porous carbon membrane electrode, K0.66-Ni-NC, achieved an impressive CO faradaic efficiency (FECO) of over 90% within a wide potential range from −0.8 to −1.6 V vs RHE for CO2RR. Additionally, it maintained an FECO of above 90% at −0.8 V vs RHE throughout a 30 h durability test in an H-cell. Further analysis has revealed that the porous structure of the carbon membrane not only facilitates the mass transport of CO2 but also increases the level of exposure of active sites during the CO2RR.
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OPTICAL MATERIALS
·
2012
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IF 2.023
Zhengwen Yang,Jialun Zhu,Dong Yan,Hangjun Wu,Rongfei Wang,Zhiguo Song,Xue Yu,Yong Yang,Dacheng Zhou,Zhaoyi Yin,Jianbei Qiu
Upconversion inverse opal photonic crystals based on a luminescent matrix of Yb, Er co-doped Y 2 Ti 2 O 7 were synthesized, and their photoluminescence was investigated. By comparing the spectra of the inverse opals with that of the reference sample, the contribution of photonic band gap effect to the upconversion emission was observed in the Y 2 Ti 2 O 7 : Yb, Er inverse opals. Intensity of the green or red upconversion emission from Er 3+ was depressed when the overlapping between the photonic band-gap and Er 3+ ions emission band occurs.
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Reaction Kinetics Mechanisms and Catalysis
·
2024
·Vol. 137
·期 3
·1667-1682
·
IF 1.7
Niu Menglong,Pan Liuyi,Ji Panpan,Liu Ning,Ge Yiqing,Niu Ben,Ma Baoqi
This study investigates the synergistic effect during the co-hydrogenation process of coal tar and biomass oil through experiments. By conducting hydrogenation experiments on model compounds of coal tar (naphthalene, tetrahydronaphthalene, decalin, and 9,10-phenanthrene) and waste soybean oil, it was found that partially saturated and fully saturated polycyclic aromatic hydrocarbons release active hydrogen atoms due to dehydrogenation at high temperatures. These active hydrogen atoms can promote the hydrogenation conversion of fatty acids derived from triglycerides in waste soybean oil during the co-hydrogenation process with coal tar. Through co-hydrogenation experiments of coal tar and waste soybean oil, it was discovered that when coal tar was first hydrogenated under conditions of temperature of 360 °C, pressure of 8 MPa, and LHSV (liquid hourly space velocity) of 0.4 h −1 , and then mixed with waste soybean oil (at a concentration of 30 g/100 mL) for hydrogenation under the conditions of temperature of 360 °C, pressure of 8 MPa, and LHSV of 0.4 h −1 , the deoxygenation conversion rate of fatty acids in the soybean oil is 94.5%. The hydrogenation deoxygenation conversion rate of the product in this process was 87.5% higher than that of individual fatty acids. This study indicates that the co-hydrogenation of hydrogenated coal tar and bio-oil promotes the deoxygenation conversion of bio-oil.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Yujie Xie,Bianyong Lian,Shuqi Deng,Qingqu Lin,Kaili Wang,Yun Zheng,Zewen Zhuang,Yao Liu,Kaian Sun,Wei Yan,Jiujun Zhang
CO and H 2 S poisoning of Pt-based catalysts for hydrogen oxidation reaction (HOR) stands as one of the long-standing hindrances to the widespread commercialization of proton exchange membrane fuel cells. In this paper, a Ru/Ti 4 O 7 catalyst is successfully synthesized by the microwave-thermal method. This Ru/Ti 4 O 7 catalyst shows a much higher noble metal mass activity than those of commercial PtRu/C and conventional Ru/C catalysts. The performance of the Ru/Ti 4 O 7 catalyst under the exist of CO or H 2 S shows insignificant current decay, which is far superior to commercial PtRu/C and Pt/C catalysts. In this Ru/Ti 4 O 7 catalyst, the electron transfer between Ru and Ti to form d-p orbital hybridization is considered to be responsible for the favorable catalytic HOR performance and the corresponding CO and H 2 S tolerance. The interaction mechanism formed by electron transfer may open a promising way for the subsequent development of anti-poisoning catalysts for PEM fuel cell hydrogen oxidation reaction.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-14
·
IF 15.7
Zhang Xiaoxin,He Hongyuan,Chen Yu,Yang Guangming,Xiao Xiao,Lv Haiping,Xiang Yongkang,Wang Shuxiong,Jiang Chang,Li Jianhui,Chen Zhou,Liu Subiao,Yan Ning,Yong Xue,Alodhayb Abdullah N.,Pan Yuanming,Chen Ning,Lin Jinru,Tu Xin,Shao Zongping,Sun Yifei
High-entropy LnBaCo 2 O 5+ δ perovskites are explored as rSOC air electrodes, though high configuration entropy ( S config ) alone poorly correlates with performance due to multifactorial interactions. We systematically engineer LnBaCo 2 O 5+ δ perovskites (Ln = lanthanides) with tunable S config and 20 consistent parameters, employing Bayesian-optimized symbolic regression to decode activity descriptors. The model identifies synergistic contributions from S config , ionic radius, and electronegativity, enabling screening of 177,100 compositions. Three validated oxides exhibit superior activity/durability, particularly (Pr 0.05 La 0.4 Nd 0.2 Sm 0.1 Y 0.25 )BaCo 2 O 5+ δ , showing enhanced oxygen vacancy concentration and disordered transport pathways. First-principles studies reveal optimized charge transfer kinetics via cobalt-oxygen bond modulation. Further, the interplay between first ionization energy, atomic mass, and ionic Lewis acidity dictates stability. This data-driven approach establishes a quantitative framework bridging entropy engineering and catalytic functionality in complex oxides.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xue Yang,Yuxuan Wang,Jingxian Hua,Rujing Hou,Jinfeng Chen,Qihan Gong,Chongqing Wang,Yichang Pan
Plate-like or sheet-like porous materials with nanometer thickness have been considered as the preferred fillers to improve mixed-matrix membranes (mmms)-based separation. Herein, hexagonal Co-fa (HG-Co-fa) nanoplates were simply synthesized without the addition of any modifier and used as fillers to construct 6FDA-DAM-based MMMs for efficient CO 2 /CH 4 separation. HG-Co-fa nanoplates exhibit high dispersion and interface compatibility in 6FDA-DAM matrix. The results demonstrated that the CO 2 /CH 4 separation performance of 6FDA-DAM was obviously improved after the incorporation of HG-Co-fa nanoplates. The resultant MMMs with nanoplate loading of 10 wt% showed CO 2 /CH 4 selectivity of 27 and CO 2 permeability of 1419 Barrer at 25 ℃ and 0.2 MPa, surpassing 2008 Robeson upper bound. Meanwhile, the high lattice integrity and structural stability of HG-Co-fa nanoplates contribute to the excellent thermal and mechanical stability of MMMs, contributing to their anti-plasticization property up to 14 bar and long-term stability up to 240 h, indicating their potential for natural gas separation.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Haofan Jia,Liujing Yang,Hao Zhu,Yang Wang,Ying Chen,Kai Sun,Xinbao Li
In this study, a series of high-efficient catalyst, Co–Fe/Al 2 O 3 , were synthesized via the sol-gel method for low-temperature phenol steam reforming (PSR). The optimized catalyst, 15Co–2Fe/Al 2 O 3 , exhibited a remarkable phenol conversion of 95.3%, a H 2 yield of 92.1% at 450 °C, GHSV = 7500 h −1 and a steam-to-carbon (S/C) ratio of 10. Furthermore, the catalyst activity was maintained for 660 min before a gradual decline was observed. The NH 3 -TPD analysis revealed that the addition of Fe enhanced the surface acidity of the catalyst, providing more active sites for phenol adsorption and activation. This study aims to address the challenges associated with high reaction temperatures and poor catalyst stability in PSR. Various characterization techniques have been employed to investigate the reaction mechanisms of bimetallic catalysts in low-temperature PSR.
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