Advanced Energy Materials
·
2023
·Vol. 13
·期 15
·2204372
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IF 27.8
Hui Zhou,Lu Yang,Yuwei Duan,Meizi Wu,Yong Li,Dongfang Xu,Hong Zou,Jungang Wang,Shaomin Yang,Zhike Liu
Surmounting complicated defects at the electron transport layer (ETL) and perovskite interface plays a non-trivial role in improving efficiency and stability of perovskite solar cells (PSCs). Herein, an asymmetric interface modification strategy (AIMS) is developed to passivate the defects from both a SnO 2 ETL and the perovskite buried surface via incorporating 1,3-thiazole-2,4-diammonium (TDA) into the SnO 2 /perovskite interface. Detailed experimental and calculated results demonstrate that N3 (the nitrogen atom bonding to the imine) in the TDA preferentially cures the free hydroxyl ( OH), oxygen vacancy ( V O ), and the Sn-related defects on the SnO 2 surface, while N1 (the nitrogen atom bonding to the vinyl) is more inclined to passivate the Pb 2+ and I − related defects at the perovskite buried surface. As a result, the TDA-modified FACsPbI 3 PSC yields a champion power conversion efficiency (PCE) of 24.96% with a gratifying open-circuit voltage ( V oc ) of 1.20 V. In addition, the optimized PSCs exhibit charming air-operational stability with the unencapsulated device sustaining 97.04% of its initial PCE after storage in air conditions for 1400 h. The encapsulated device maintains 90.21% of its initial PCE after maximum power point tracking for 500 h.
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JOURNAL OF MICROENCAPSULATION
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2023
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IF 3.9
Ran Tao,Qianyu Zhang,Jialing Duan,Ran Chen,Liyun Yao,Ruiteng Zhang,Gang Dong,Huali Chen
Aims The aim of this study is to develop a liposome that could exert unparalleled antioxidant effects. In the present study, a vitamin C (VC)/vitamin E (VE)-co-loaded multivesicular liposome (VCVE-MVL) was constructed.Methods Vitamins were encapsulated in soybean phosphatidylcholine (SPC) and cholesterol (CHO) by multi-emulsification method. The concentration of VC was determined by Fast Blue method. The concentration of VE was determined by high performance liquid chromatography (HPLC). Vitamin antioxidant capacity in vitro and in vivo was determined using β-carotene bleaching.Results VCVE-MVL with particle diameter of 848.55 ± 0.29 nm and SPAN of 0.16 ± 0.11 were obtained. The encapsulation efficiency of VC reached 48.51% (w/w)±0.15. Compared with VC/VE solution, VCVE-MVL had a higher permeation efficiency. In addition, the in vitro and ex-vivo antioxidant tests verified the adequate antioxidant activity of VCVE-MVL.Conclusions In conclusion, the antioxidant synergistic system we constructed and demonstrated its potential applications in the cosmetics industry.
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NEW JOURNAL OF CHEMISTRY
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2023
·Vol. 47
·期 15
·7101-7110
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IF 3.3
Yaping Yuan,Jing Li,Chenyuan Guo,Lili Zhang,Yuyan Song,Yanli He,Yankun Luo,Shuguang Shen
Cellulose aerogels were synthesized to be used for urea adsorption and targeting a fast adsorption rate and high adsorption capacity. This kind of urea adsorbent was synthesized by a sol–gel method in a simple NaOH/urea aqueous solution system. The aerogels were characterized by FT-IR spectroscopy, XRD, SEM, and N2 adsorption/desorption techniques and their adsorption properties were evaluated. The results showed that the aerogels comprised an ultralight mesoporous material with a large specific surface area and a porous three-dimensional network structure. The adsorption process followed the Freundlich model and the pseudo-first-order kinetic model. The synthesized aerogels had a superior adsorption capacity and a fast adsorption rate, and adsorption equilibrium could be reached within 60 min under the human physiological temperature. Therefore, this aerogel type of absorbent has potential applications for the adsorption of urea in dialysate.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Ruolin Cheng,Anhu Wang,Shuxun Sang,Huagen Liang,Shiqi Liu,Panagiotis Tsiakaras
The CO 2 cycloaddition of epoxides is a highly attractive long-term carbon fixation strategy, but harsh reaction conditions and expensive catalytic materials limit its industrial application. Herein, low-cost and highly efficient W 18 O 49 -based composites were constructed by in-situ solvothermal synthesis. It is found that W 18 O 49 /g-C 3 N 4 composites exhibit the highest yield of 74% (271 mmol g −1 h −1 ) in the probing reaction of styrene carbonate production. The physicochemical characterizations indicate that the photocatalysis plays a fundamental role in this reaction by promoting the activation of CO 2 and styrene oxide. The crucial role of photogenerated electrons and Lewis acid-base sites is confirmed. In this work, a novel catalyst selection to produce cyclic carbonate under ambient conditions is presented.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Bangpeng Yang,Liuyan Xia,Rong Li,Guangsheng Huang,Shuangshuang Tan,Zhongting Wang,Baihua Qu,Jingfeng Wang,Fusheng Pan
Rechargeable magnesium batteries (RMBs) have attracted tremendous attention in energy storage applications in term of high abundance, high specific capacity and remarkable safety of metallic magnesium (Mg) anode. However, a serious passivation of Mg anode in the conventional electrolytes leads to extremely poor plating/stripping performance, further hindering its applications. Herein, we propose a convenient method to construct an artificial interphase layer on Mg anode by substitution and alloying reactions between SbCl 3 and Mg. This Sb-based artificial interphase layer containing mainly MgCl 2 and Mg 3 Sb 2 endows the significantly improved interfacial kinetics and electrochemical performance of Mg anode. The overpotential of Mg plating/stripping in conventional Mg(TFSI) 2 /DME electrolytes is vastly reduced from over 2 V to 0.25–0.3 V. Combining experiments and calculations, we demonstrate that under the uniform distribution of MgCl 2 and Mg 3 Sb 2 , an electric field with a favorable potential gradient is formed on the anode surface, which enables swift Mg 2+ migration. Meanwhile, this layer can inhibit the decomposition of electrolytes to protect anode. This work provides an in-depth exploration of the artificial solid-electrolyte interface (SEI) construction, and a more achievable and safe path to realize the application of metallic Mg anode in RMBs.
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Nano Today
·
2023
·
IF 17.4
Nan Wang,Pin Li,Jing Zhao,Yamin Liu,Xi Hu,Daishun Ling,Fangyuan Li
Photoimmunotherapy, which not only directly kills tumor cells but also elicits antitumor immune responses by inducing immunogenic cell death (ICD), has emerged as a promising approach for cancer treatment. However, the hypoxic immunosuppressive tumor microenvironment (TME) with limited immune response immensely compromises the therapeutic outcomes. Herein, an end-deposited plasmonic catalyst (GCNRs) is developed by selectively depositing semiconducting ceria nanosheets onto the two ends of gold nanorods for plasmonic catalysis-mediated TME modulation. Specially, an efficient low-power near-infrared-triggered electron-hole spatial separation along the longitudinal axis of GCNRs occurs due to the end-deposition morphology. The generated hot electrons and hot holes separately participate in the reactive oxygen species (ROS) generation and oxygen-evolution half-reaction, thereby modulating the immunosuppressive TME via concurrent ROS-mediated ICD-induction and H 2 O 2 -independent hypoxia relief. Unprecedentedly, mere injection of GCNRs can induce significant infiltration of cytotoxic T cells into tumor tissues, significantly inhibiting the growth and metastasis of tumors. Our study represents a promising plasmonic catalysis-mediated TME modulation strategy in phototherapy-based immuno-oncology.
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Journal of Materials Chemistry B
·
2023
·Vol. 11
·期 19
·4354-4364
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IF 7
Xiaodan Li,Wenzhen Du,Wenxin Xu,Guixia Ling,Peng Zhang
The use of nanomaterials to replace antibiotics has developed rapidly in the past decade, among which zinc oxide nanoparticles (ZnO NPs) have been proven to exhibit antibacterial properties and low toxicity in the treatment of microbial infections, and have been applied in antibacterial agent preparation. However, one of the problems of ZnO NPs is that these particles do not disperse well in some media, which reduces their antibacterial effects. Ionic liquids (ILs) are a class of low melting point salts containing organic cations and organic/inorganic anions; they have good biocompatibility and can not only enhance the dispersion of ZnO NPs but also have antibacterial properties. Microneedles (MNs) are an emerging transdermal drug delivery platform, which can effectively establish a transport channel in the epidermis and deliver the drug to a predetermined depth without causing pain, skin damage or overstimulation. Dissolving microneedles (DMNs) have developed rapidly because of several advantages. In this study, it is verified that ZnO NPs dispersed in the imidazolidinyl IL exhibit excellent and enhanced antibacterial effects compared with single ZnO NPs and a single IL. Therefore, ZnO NPs/IL dispersion showed good antibacterial activity. Then, ZnO NPs/IL dispersions with synergistic antibacterial properties were used as antibacterial agents to prepare DMNs. In vitro antibacterial results showed that DMNs also had good antibacterial properties. Furthermore, DMNs were applied to treat wound infection. Antibacterial DMNs were inserted into the infected wound and then dissolved and released, resulting in microbial death and acceleration of wound healing.
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ACS Applied Nano Materials
·
2023
·
IF 5.9
Ning Jia,Bin Yang,Xiaohong Wang,Yuxin Zuo,Pengjun Chen,Ru Xia,Jibin Miao,Zhengzhi Zheng,Jiasheng Qian,Yuchao Ke,Weiguo Zhang,Yang Pan
In this study, a series of three-dimensional (3D) epoxy resin/poly(vinylidene fluoride)/nickel–cobalt alloy–graphene nanosheet (EP/PVDF/NiCo-GNS) composites with high thermal conductivity and electromagnetic interference shielding effectiveness (EMI SE) were successfully prepared using a salt template-assisted strategy. X-ray diffraction analysis (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) analyses jointly presented the successful modification of GNS and in situ growth of NiCo alloy. The cross-sectional morphological observations on the PVDF/NiCo-GNS skeleton and epoxy-based composites clearly showed the successful construction of a honeycomb-like heat conduction network. At a NiCo-GNS loading of 15 wt %, the prepared composites’ EMI SE could reach a value of 34.62 dB. The special structures not only perfected the interconnected thermally and electrically conductive network but also facilitated the multiple internal reflections of electromagnetic waves inside the composites. The present work provides an insight into the design of multifunctional polymer-based composites for electronic 3D encapsulation applications.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Yichi Zhang,Junsheng Wang,Yuezhu Wang,Kai Zhao
Chemical kinetics plays an important role in the fields of chemical synthesis, pharmaceutical, environmental protection, and the study of related detection technology and devices is of great significance. This study presents an automated micro-reaction device capable of performing automated injection, reaction, and in-situ real-time monitoring of product concentration to analyze chemical kinetics. By designing microfluidic chips with micropore and microchannel structures, the device can precisely control the mixing of the reactants (µL scale) with one click and monitor the whole reaction process from time zero. Compared to traditional point-based detection methods, this device can obtain kinetic information of reaction rate, reaction order, and product concentration with micro samples under conditions where the equation of the chemical reaction is unknown, while avoiding errors caused by manual operation during the reaction process. The experimental results demonstrate that the device’s ability to accurately detect both spontaneous and excited fluorescence products, with a minimum detection unit of 0.0217 g/mL. This study realized the monitoring of chemical reactions with fast reaction rates, small reactant volumes, and complex reaction processes. It provides a feasible method and reliable equipment for tracing complex reactions in medicine, chemical industry, and environmental fields.
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PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
·
2023
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IF 4.7
Xingan Cheng,Fangyun Dong,Junjie Li,Qiwen Zou,Xin Liu,Huiqing He,Hanhui Zhang,Xiaojing Lv,Yuehua Wu,Xuhong Jiang,Xiangjing Qin
As one of the major threats to global food security, Spodoptera frugiperda ( S. frugiperda ) is highly gaining consideration due to its severe damage. Matrine is a widely and effectively used botanical insecticide in controlling S.frugiperda but lacks a rapidly available effect. To further improved the insecticidal activity of matrine based on combination principles, this work synthesized five new pyrazole matrine derivatives (PMDs) using Michael addition and investigated insecticidal activity against 2nd instar larvae of S. frugiperda ( in vivo ) and its isolated cell( in vitro ). Our result demonstrated that PMDs show higher pesticidal activity than that matrine in both in vitro and in vivo assays. The most toxic derivatives in vitro and in vivo are PMD-3 and PMD-1, with IC 50 of 2.49 mM and LC 50 of 22.76 mg/L respectively. This research also investigates the anti-proliferation mechanism of PMDs based on isolated cells. PMDs decrease mitochondria membrane potential , arrested cell cycle at the G2/M phase, and upregulated Caspase 3 , Caspase 9 , and Apaf-1 to induce Caspase-dependent apoptosis. For Caspase-independent apoptosis, AIF and Endo G were found to be upregulated. Besides, pro-apoptotic factors like p53, IBM-1, and anti-apoptotic factors like IAP were upregulated. Moreover, we supposed that there was a linkage between lysosomes and PMD-induced apoptosis according to increased apoptosis rate , activated lysosomes, and upregulated Cathepsin B . This research provides new ideas for the synthesis of matrine derivatives and further demonstrated the anti-proliferation mechanism of PMDs.
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International Journal of Electrochemical Science
·
2023
·
IF 1.5
Lei Chen,Shu Zhu,Xuepeng Wang
The detection of glioma cells (GMC) could be used to evaluate the effectiveness of treatment. Based on the advantages of easy synthesis and modification of aptamers and the advantages of high sensitivity, excellent selectivity, and wide application of electrochemical methods, this work constructs an aptamer electrochemical sensor that can be used for rapid and efficient detection of GMC. We used activators for the activation of carboxyl groups after modification of 4-carboxyphenyl diazonium salt. The aptamer, which can specifically recognize GMC, is immobilized on the electrode surface by forming an amide bond between the amino and carboxyl groups on the aptamer. The conditions affecting the sensing of the aptamer sensor were investigated in detail. The current of the aptamer sensor is proportionally with the GMC concentration from 1×10 7 to 1×10 2 cells/mL. Moreover, the sensor can identify GMC with reasonable specificity.
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MOLECULES
·
2023
·Vol. 28
·期 12
·4633
·
IF 4.6
Yuyi Liao,Zhongtao Shang,Guangrui Ju,Dingke Wang,Qiao Yang,Yuan Wang,Shaojun Yuan
Developing advanced carbon materials by utilizing biomass waste has attracted much attention. However, porous carbon electrodes based on the electronic-double-layer-capacitor (EDLC) charge storage mechanism generally presents unsatisfactory capacitance and energy density. Herein, an N-doped carbon material (RSM-0.33-550) was prepared by directly pyrolyzing reed straw and melamine. The micro- and meso-porous structure and the rich active nitrogen functional group offered more ion transfer and faradaic capacitance. X-ray diffraction (XRD), Raman, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) measurements were used to characterize the biomass-derived carbon materials. The prepared RSM-0.33-550 possessed an N content of 6.02% and a specific surface area of 547.1 m2g−1. Compared with the RSM-0-550 without melamine addition, the RSM-0.33-550 possessed a higher content of active nitrogen (pyridinic-N) in the carbon network, thus presenting an increased number of active sites for charge storage. As the anode for supercapacitors (SCs) in 6 M KOH, RSM-0.33-550 exhibited a capacitance of 202.8 F g−1at a current density of 1 A g−1. At a higher current density of 20 A g−1, it still retained a capacitance of 158 F g−1. Notably, it delivered excellent stability with capacity retention of 96.3% at 20 A g−1after 5000 cycles. This work not only offers a new electrode material for SCs, but also gives a new insight into rationally utilizing biomass waste for energy storage.Keywords:biomass;supercapacitors;nitrogen doping;melamine;porous carbon
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