CELLULOSE
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2022
·Vol. 29
·期 16
·8781-8795
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IF 6.123
Zhang Tao,Yuan Tiancheng,Xiao Xiao,Peng Haozhe,Fang Xinyu,Wang Kaili,Liu Xiaorong,Li Yanjun
The functional paper holds significant potential in some special fields, which has achieved great development. Nevertheless, using cellulose paper to fabricate functional paper, which integrates transparency, robustness, flexibility, shape memory, and sustainability, remains a challenge. Herein, the vitrimer precursor was vacuum impregnated into cellulose paper and then in-situ polymerized to develop a vitrimer-cellulose paper (VCP) with transparency, shape manipulation, robustness, and sustainability. Taking advantage of the vitrimer’s dynamic performance, the resulting VCP demonstrated excellent optical transparency (transmittance of 84%, haze of 75%), enhanced mechanical strength (tensile strength of 80.5 MPa), chemical resistance, thermal-triggered shape manipulation, and reprocessing. Noteworthily, VCP possessed outstanding light management capability with effective light propagating and scattering performance. Furthermore, VCP laminate showed increased mechanical property with the increased layers, and it can be reprocessed to a bulk composite after crushing. These incorporated merits of VCP make a promising candidate for light management and sustainable building application.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 53
·80399-80410
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IF 5.19
Shu Xinpeng,Bi Huaqi,Wang Jun,Yang Jiaxin,Wang Jue,Liu Guangqing,Su Bensheng
Catalytic ozonation with supported metal oxides is a promising strategy for addressing refractory pollutants in wastewater. In this study, γ-Al 2 O 3 supported MnO x -CeO x catalysts (MC 1 , MC 2 , and MC 3 ) obtained at different calcination temperatures (400 °C, 550 °C, and 700 °C) were applied as effective catalysts for ozonation and explored the feasibility of the treatment of oxytetracycline (OTC) wastewater. Comparatively, the MC 2 possessed the highest molar ratios of Mn 3+ /Mn 4+ (1.60) and Ce 3+ /Ce 4+ (0.96), the largest surface area (273.8 m 2 g −1 ) with a petal-shaped structure, and most abundant surface hydroxyls (3.78 mmol g −1 ). These physicochemical characteristics benefited the surface reaction and resulted in the acceleration of ozone decomposition, electron transfer, and •OH generation, thereby improving the catalyst’s adsorption ability and catalytic activity. The combination with MC 2 increased the OTC and COD removal of the ozonation process from 59.1% and 29.0% to 94.7% and 83.3% in 25 min, respectively. By employing electron paramagnetic resonance (EPR) and radical quenching experiments, it was verified that •OH species generation promoted the mineralization of OTC. The possible degradation pathways of OTC were investigated through mass spectrometry, and the route consisted of dehydration, deamination, and demethylation. Moreover, during a 12-day continuous experiment, MC 2 catalyst exhibited excellent reusability and catalytic stability, with COD removal efficiencies above 80%.
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PubMed
高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 12
·6745-6758
·
IF 6.123
Zhang Jinyang,Mi Shu,Liu Fei,Qiao Qian,Na Haining,Zhu Jin
Organic solvents with low Henry's constants, such as propylene carbonate (PC) and sulfolane, were proposed to be used as CO 2 absorbents to increase CO 2 absorption capacity in the CO 2 switchable solvent, so that the dissolution of cellulose can be effectively enhanced. With the addition of PC, the maximum concentration achieved for the dissolution of paper cellulose can be largely increased from 1.0 to 5.0 wt%, while those for microcrystalline cellulose and corncob cellulose were increased from 5.0 to 10.0 and 7.0 wt%, respectively. Moreover, the chemical and crystalline structure of the regenerated cellulose was not affected by the addition of CO 2 absorbents. This study illustrated a simple and effective way to modify the CO 2 switchable solvent, which would be helpful for the application of the complex solvent system for the enhanced dissolution, derivatization, and processing of cellulose in the future.
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高影响因子
JOURNAL OF ELECTRONIC MATERIALS
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2022
·Vol. 51
·期 9
·4986-4994
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IF 2.047
Cao Zhangyi,Xie Xi,Chen Xin,Yu Jiaqi,Liu Xiukun,Huang Yuanxing,Xu Xu,Lu Shaorong,Li Yuqi
The high wear and temperature resistance of electrode materials are the key issues to extend the application of triboelectric nanogenerators (TENG). The synergistic effect of Fe 3 O 4 and ionic liquid-modified graphene (IGNs) were used to enhance the wear resistance, heat resistance, and mechanical properties of polyimide (PI). Then, the output performance of the PI-based TENG in contact–separation mode was tested. The results show that the tensile strength and thermal decomposition temperature of the IGNs/Fe 3 O 4 /PI composites (2F2G) d increased by 57 MPa and 23°C, respectively, due to the synergistic effect of IGNs and Fe 3 O 4 . In addition, the friction coefficient and wear rate of the 2F2G decreased by 21% and 14%, respectively. The open-circuit voltage, short-circuit current, and peak power density of the 2F2G-based TENG were 65 V, 2.48 μA, and 1.34 W/m 2 at 1 Hz, respectively. Owing to the high wear and temperature resistance of the 2F2G, the 2F2G-based TENG has a broad application prospect in the fields of wear- or high-temperature-resistant energy harvesting and self-powered sensors. Graphical Abstract
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 25
·11725-11734
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IF 4.682
Cheng Haoyan,Xia Wanting,Zhao Zhipeng,Wang Wenjing,Song Kexing,Li Haitao,Cheng Chu,Hu Hao
Solar-driven water evaporation, a promising method to obtain freshwater resources, has drawn intensive attention recent years due to the abundance of solar energy and scarcity of clean water. Here, we introduce a robust strategy to obtain a series of polydopamine-modified Cu 2− x Se nano-composites (Cu 2− x Se@PDAs) with core@shell structure, which has strong absorption in solar spectrum and outstanding photothermal conversion efficiency for freshwater production. Temperature of the obtained Cu 2− x Se@PDA30 aqueous solution could increase from 19.4 to 70.6 °C in 5 min under the irradiation of 980-nm NIR laser with the power density of 0.002 kW·cm −2 . Under 0.5 simulated sunlight irradiation, water evaporation rates were as high as 3.36 kg·m −2 ·h −1 when using the Cu 2− x Se@PDA30 for desalination, indicating excellent evaporation efficiency under weak light. Moreover, the obtained Cu 2− x Se@PDA30 can also apply to wastewater purification and the evaporation rate could reach 2.71 kg·m −2 ·h −1 under an irradiation of simulated sunlight with intensity of 1 kW·m −2 . These results provided new insight into solar desalination and wastewater treatment using nanoscale semiconductor materials.
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高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2022
·Vol. 30
·期 9
·3791-3801
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IF 4.705
Dong Yuhui,Wang Bing,Liang Tian,Huang Dongdong,Jin Jiali,Li Weihe,Fu Lu
Myocardial fibrosis is responsible for the current ineffective treatment of heart hypertrophy. Recent research findings have shown that Melatonin (Mel) reduces heart hypertrophy and fibrosis by promoting sleep and melatonin levels in the body. With the use of poly(lactide) polycarboxy betaine (PLGA-COOH), cardiac homing peptide, and gold nanoparticles (AuNPs), we have developed a unique melatonin delivery and transportation approach via a simple two-step procedure, which we discuss in this study. A mouse model of pressure overdrive cardiac hypertrophy was used to evaluate the effects of nanoparticles (Mel/CHP@AuNPs) on myocardial fibrosis and hypertrophy in the heart. The nanocomposites of Mel/CHP@AuNPs have a diameter of 220.5 ± 4.25 nm and negative zeta potential of 20.18 ± 1.29 mV. An excellent encapsulation capacity for AuNPs (76.12 ± 4.01%) and Melatonin (78.58 ± 5.79%) were found in the Mel/CHP@AuNPs and magnetic characteristics that showed no residual magnetization or coercivity, as demonstrated by the construction of magnetic hysteresis curves. For example, the in vivo echocardiography and real-time polymerase chain reaction (RT-PCR) and histological evaluations demonstrated that Mel/CHP@AuNPs' low dosages improved myocardial hypertrophy and fibrosis. One of the most promising nanoagents for the treatment of cardiac disease is these basic biocompatible, dual-targeting nanoagents.
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高影响因子
Science China-Chemistry
·
2022
·Vol. 65
·期 6
·1112-1121
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IF 10.138
Liu Liangbin,Tang Chongyang,Bu Lingzheng,Xiao Xiangheng,Huang Xiaoqing
Two-dimensional (2D) platinum (Pt)-based nanomaterials are considered as the ideal fuel cell catalysts, while their rational synthesis associated with phase control remains a formidable challenge. Herein, we firstly design the novel 2D Pt-lead-sulphur heterophased nanosheets (PtPbS HPNSs) as efficient high-toleration electrocatalysts for methanol oxidation reaction (MOR). They exhibit much higher activity and more highlighted bifunctional antipoisoning abilities than PtPb NSs and commercial Pt/C. Further density functional theory (DFT) simulation verifies that the decreased electron density of Pt sites worked by Pb and S makes CO intermediate favorable to desorb, avoiding the formation of CO*-polluted Pt sites. Simultaneously, this heterophased interface effectively weakens the adsorption of S 2− -species and improves the S-poisoning tolerance, showing a route to realize nearly innoxious catalysis. The present work highlights the importance of heterophase control in tuning antipoisoning property for 2D Pt-based nanomaterials, which is key for the rational design of efficient fuel cell anodic catalysts.
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高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
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2022
·Vol. 32
·期 5
·2237-2248
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IF 2.036
Liu Cansen,Zhen Haowen,Huang Qishan,Chen Wanlin,Mai Yongjin,Zhang Liuyan,Jie Xiaohua
The dispersity of incorporated particles is critical for the creation of composite coatings with enhanced performance. Here, we propose a mechanical agitation and ultrasound-assisted pulse electroplating technique for producing exfoliated MoS 2 reinforced cobalt-based composite coatings with improved tribological and electrochemical properties. The dispersity of exfoliated MoS 2 and its corresponding effect on the microstructure, microhardness, tribological and electrochemical behaviors of the resultant composite coatings are systematically investigated. The results reveal that the outstanding dispersity of exfoliated MoS 2 in electrolyte is beneficial to its even distribution and incorporation in the composite coating, endowing the resultant composite coatings with a smooth surface, compact structure, high hardness, remarkable antiwear and friction reduction performance as well as superior corrosion resistance. This study offers a strategy for producing high-performance composite coatings with promising practical applications. Graphical Abstract
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高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-10
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IF 17.694
Feng Li-Zhe,Wang Jing-Jing,Ma Tao,Yin Yi-Chen,Song Kuang-Hui,Li Zi-Du,Zhou Man-Man,Jin Shan,Zhuang Taotao,Fan Feng-Jia,Zhu Man-Zhou,Yao Hong-Bin
Hierarchically structured chiral luminescent materials hold promise for achieving efficient circularly polarized luminescence. However, a feasible chemical route to fabricate hierarchically structured chiral luminescent polycrystals is still elusive because of their complex structures and complicated formation process. We here report a biomimetic non-classical crystallization (BNCC) strategy for preparing efficient hierarchically structured chiral luminescent polycrystals using well-designed highly luminescent homochiral copper(I)-iodide hybrid clusters as basic units for non-classical crystallization. By monitoring the crystallization process, we unravel the BNCC mechanism, which involves crystal nucleation, nanoparticles aggregation, oriented attachment, and mesoscopic transformation processes. We finally obtain the circularly polarized phosphors with both high luminescent efficiency of 32% and high luminescent dissymmetry factor of 1.5 × 10 −2 , achieving the demonstration of a circularly polarized phosphor converted light emitting diode with a polarization degree of 1.84% at room temperature. Our designed BNCC strategy provides a simple, reliable, and large-scale synthetic route for preparing bright circularly polarized phosphors.
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PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2022
·Vol. 20
·期 1
·1-19
·
IF 9.429
Ouyang Minzhi,Ouyang Xiangnan,Peng Zefang,Liu Minghui,Xu Ganqiong,Zou Zhen,Zhang Ming,Shang Quanliang
Background A balanced endogenous level of bioavailable nitric oxide (NO) plays a key role in maintaining cardiovascular homeostasis. The bioactive NO level in the cardiomyocytes was much reduced during sepsis. However, it is clinically challenging for the NO gas therapy due to the lack of spatial and temporal release system with precise control. The purpose of this study is to design a NO-releasing biomaterial with heart-targeted capability responsive to the infectious microenvironment, thus ameliorating lipopolysaccharide (LPS)-induced cardiac dysfunction.Results The heart-targeted NO delivery and in situ releasing system, PCM-MSN@LA, was synthesized using hollow mesoporous silica nanoparticles (MSN) as the carrier, and L-arginine (LA) as the NO donor. The myocardial delivery was successfully directed to heart by specific peptide (PCM) combined with low-intensity focused ultrasound (LIFU) guidance. The myocardial system synthesized NO from the LA released from PCM-MSN@LA in the presence of increased endogenous nitric oxide synthase (NOS) activity induced by LPS. This targeted NO release in situ achieved extraordinary protective effects against LPS-challenged myocardial injury by reducing the recruitment of inflammatory cells, inhibiting oxidative stress and maintaining the mitochondria integrity. In particular, this protection was not compromised by simultaneous circulation collapse as an adverse event in the context.Conclusion sPCM-MSN@LA + LIFU exhibited extraordinary cardioprotective effects against severe sepsis in the hearts of LPS-treated animals without the side effect of NO diffusion. This technology has great potential to be served as a novel therapeutic strategy for sepsis-induced myocardial injury.
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高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-13
·
IF 17.694
Xiao Kui,Zhang Niyuan,Li Feifei,Hou Dayong,Zhai Xiaoyi,Xu Wanhai,Wang Gelin,Wang Hao,Zhao Liang
Medicinal applications of gold complexes have recently attracted attention due to their innovative antitumor mechanisms. In this work, two hypercoordinated carbon-centered gold clusters PAA4 and PAA5 are quantitatively synthesized by an intramolecular 6- exo - dig cyclization of polymetalated precursors. The on-bench and in vitro experimental studies demonstrate that the characteristic hypercarbon-tetragold(I) multi-center bonding in PAA4 and PAA5 not only guarantees their stability under common physiological conditions, but also facilitates a glutathione (GSH)-triggered prompt and synergetic release of active Au(I) ions in the GSH-overexpressed and acidic microenvironment of human bladder cancer EJ cells. The instantly massive release of coordination unsaturated Au(I) ions causes the efficient inhibition of thioredoxin reductases and then induces a rapid pro-oxidant response, consequently causing the occurrence of accelerated ferroptosis of EJ cells. As a result, these hypercarbon-centered gold(I) cluster prodrugs show high cytotoxicity to bladder cancer cell lines and thus exhibit a significant inhibition effect towards bladder tumors in vivo. Correlation of the synergetic domino dissociation of carbon-polymetal multi-center bonding in metal clusters with the accelerated ferroptosis of cancer cells provides a strategy for metallo-prodrugs and opens a broader prospect for the biological application of metal cluster compounds.
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PubMed
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 6
·1786-1796
·
IF 2.936
Zhao Wei,Zhang Hongyi,Zhang Lei,Gong Jianchao,Chen Tianen,Ren Liming,Ji Yaxiong,Meng Fanbin
The methanol oxidation reaction is a promising route to eliminating trace amount of methanol in exhaust gases which aroused serious environmental concern. In this work, a novel Pd/MgAl 2 O 4 catalyst was prepared to construct the metal-support interface and employed in the methanol oxidation reaction. The reaction results show that the Pd/MgAl 2 O 4 catalyst could achieve 100% methanol oxidation at 198 ℃ over the Pd/MgO and Pd/Al 2 O 3 catalysts. The high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), CO-chemisorption, H 2 temperature programmed reduction (H 2 -TPR), and CO diffuse reflectance infrared Fourier transformed spectroscopy (CO-DRIFTS) show that the Pd was uniformly distributed over the MgAl 2 O 4 support due to strong interaction between Pd and MgAl 2 O 4 . The mechanism studies show that the abundant Pd-MgAl 2 O 4 interfaces significantly contributed to the reaction enhancement. The Pd-MgAl 2 O 4 interfaces could greatly enhance the oxidation reaction at a lower temperature with the assistance of oxygen vacancies compared with traditional oxide catalysts, which was confirmed by methanol temperature program surface reaction (MeOH-TPSR) experiments. In-situ DRIFTS is carried out to elucidate the reaction mechanism and establish the structure − activity relationship: the methanol could be effectively absorbed on the MgAl 2 O 4 support with oxygen vacancies to form bidentate formate, then the Pd species assisted the intermediates converting to CO 2 product. The Pd/MgAl 2 O 4 catalyst and its enhancement mechanism investigation provided a potential strategy in the VOCs removal catalysis development. Graphical Abstract
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高影响因子
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