Journal of Materials Research and Technology-JMR&T
·
2023
·
IF 6.4
Bo Dong,Chengji Deng,Jinghui Di,Jun Ding,Qingyou Zhu,Hao Liu,Hongxi Zhu,Chao Yu
The non-isothermal and isothermal oxidation behavior of Al 3 BC 3 powders at 800–1400 °C in the air was studied. The results revealed that the oxidation resistance of Al 3 BC 3 powders was better than that of “Al 8 B 4 C 7 ” powders. At 800–1100 °C, the sintering accelerated the adhesion between the aluminum borate layer and the Al 3 BC 3 core. No micro-crack was observed on both surface and cross-section, thus effectively blocking the diffusion of oxygen and volatilization of reactant gases. The oxidation behavior changed due to the oxidation products growing into a rod shape higher than 1200 °C. The interlocking structure of Al 18 B 4 O 33 micro-rods made the surface of oxidized powder porous. Therefore, the oxygen diffused quickly into Al 3 BC 3 through the porous structure on its surface, leading to rapid oxidation. Jander model could deal with oxidation kinetics and be in good agreement with the experimental data. The calculated apparent activation energy of Al 3 BC 3 powder was equal to 212.76 kJ/mol at 800–1100 °C.
✓ 已验证
产品关联
DOI
高影响因子
Nature Energy
·
2023
·Vol. 8
·期 3
·294-303
·
IF 56.7
Luo Long,Zeng Haipeng,Wang Zaiwei,Li Min,You Shuai,Chen Bin,Maxwell Aidan,An Qinyou,Cui Lianmeng,Luo Deying,Hu Juntao,Li Shangzhi,Cai Xueqing,Li Weixi,Li Lin,Guo Rui,Huang Rong,Liang Wenxi,Lu Zheng-Hong,Mai Liqiang,Rong Yaoguang,Sargent Edward H.,Li Xiong
Two-dimensional (2D) and quasi-2D modifications of three-dimensional (3D) perovskite active layers have contributed to advances in the performance of perovskite solar cells (PSCs). However, the ionic diffusion between the surface 2D and bulk 3D perovskites leads to the degradation of the 3D/2D perovskite heterostructures and limits the long-term stability of PSCs. Here we incorporate a cross-linked polymer (CLP) on the top of a 3D perovskite layer and then deposit a 2D perovskite layer via a vapour-assisted two-step process to form a 3D/CLP/2D perovskite heterostructure. Photoluminescence spectra and thickness-profiled elemental analysis indicate that the CLP stabilizes the heterostructure by inhibiting the diffusion of cations (formamidinium, FA + and 4-fluorophenylethylammonium, 4F-PEA + ) between the 2D and 3D perovskites. For devices based on carbon electrodes, we report small-area devices with an efficiency of 21.2% and mini-modules with an efficiency of 19.6%. Devices retain 90% of initial performance after 4,390 hours operation under maximum power point tracking and one-sun illumination at elevated temperatures.
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 4
·707
·
IF 5.3
Lazhen Shen,Jinlong Dong,Bin Wen,Xiangping Wen,Jianhui Li
Acetaminophen (AC) is one of the most popular pharmacologically active substances used as an analgesic and antipyretic drug. Herein, a new type of hollow Fe3O4-rGO/GCE electrode was prepared for electrochemical detection of AC through a three-step approach involving a solvothermal method for the synthesis of hollow Fe3O4and the chemical reduction of graphene oxide (GO) for reduced graphene oxide (rGO) and Fe3O4-rGO nanocomposites modified on the glassy carbon electrode (GCE) surface. The as-prepared Fe3O4-rGO nanocomposites were characterized using a transmission electron microscope (TEM), X-ray diffraction (XRD), and a magnetic measurement system (SQUID-VSM). The magnetic Fe3O4-rGO/GCE electrodes were employed for the electrochemical detection of AC using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and square wave voltammetry (SWV) and exhibited an ultra-high selectivity and accuracy, a low detection limit of 0.11 µmol/L with a wider linear range from 5 × 10−7to 10−4mol/L, and high recovery between 100.52% and 101.43%. The obtained Fe3O4-rGO-modified GCE displays great practical significance for the detection of AC in drug analysis.Keywords:acetaminophen;electrochemical detection;hollow Fe3O4nanoparticles;magnetic Fe3O4-rGO/GCE electrode
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Brian Makuza,Dawei Yu,Zhu Huang,Xueyi Guo,Qinghua Tian,Kun Zhang,Baichao Zhang,Pengfei Liu
The vast amount of Lithium-ion batteries (LIBs) reaching their end-of-life calls for effective recycling processes, given the low recycling efficiency in the industry. This paper proposes an innovative sequential carbothermic reduction-selective hydrochlorination process to attain metallization of Ni-Co alloy, selective chlorination of Li, Mn, and Cu, and the formation of Al 2 O 3 to address some of the recycling challenges. The proposed process paves the way for short-range effective separation of the high-value metals in the LIB black mass based on magnetism and water solubility differences. After hydrochlorination at 1000 °C for 30 min with the material bed measuring 9 mm in thickness, Li and Mn water recovery reached 97.28% and 98.13%, respectively. The Ni and Co recoveries into the magnetic fraction reached 93.03% and 91.37%, respectively. Up to 95.28% Al, including graphite, reported to the non-magnetic fraction. Prolonged hydrochlorination time increased the chlorination degree despite negatively affecting the Ni-Co alloy recovering efficiency. Conversely, an increase in the thickness of the material bed had a reverse effect. Step-wise precipitation of the water-soluble product produced high-purity Li 2 CO 3 (≥99.5%) and Mn 3 O 4 . Compellingly, graphite with morphology and characteristic diffraction peaks and Raman bands similar to commercial graphite was regenerated by NaOH dissolution of the non-magnetic fraction. These findings demonstrate that a black mass with a complex composition (Li, Ni, Mn, Co, and Al) could be comprehensively recycled using synergetic carbothermic reduction and hydrochlorination. Besides the high recovery rates, the proposed process minimizes recycling process steps and chemical usage, which is of utmost industrial significance.
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 1
·340
·
IF 4.6
Jingqi Sun,Limin Jia,Xuwei Chen
Glutathione S-transferases (GSTs) are important type-II detoxification enzymes that protect DNA and proteins from damage and are often used as protein tags for the expression of fusion proteins. In the present work, octa-aminopropyl caged polyhedral oligomeric silsesquioxane (OA–POSS) was prepared via acid-catalyzed hydrolysis of 3-aminopropyltriethoxysilane and polymerized on the surface of graphene oxide (GO) through an amidation reaction. Glutathione (GSH) was then modified to GO–POSS through a Michael addition reaction to obtain a GSH-functionalized GO–POSS composite (GPG). The structure and characteristics of the as-prepared GPG composite were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), thermogravity analysis, and surface charge analysis. The specific binding interactions between glutathione and GST gave GPG favorable adsorption selectivity towards GST, and other proteins did not affect GST adsorption. The adsorption behavior of GST on the GPG composite conformed to the Langmuir isotherm model, and the adsorption capacity of GST was high up to 364.94 mg g−1under optimal conditions. The GPG-based solid-phase adsorption process was applied to the extraction of GST from a crude enzyme solution of pig liver, and high-purity GST was obtained via SDS-PAGE identification.Keywords:octa-aminopropyl caged polyhedral oligomeric silsesquioxane (OA–POSS);graphene oxide (GO);glutathione S-transferases (GST);adsorption;solid-phase extraction
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Ming Yan,Jiangtao Huang,Mengliu Yang,Hao Zhang,Yu Zhu,Nengyu Zhou,Juan Wang
MAX phases are layered ternary carbides and nitrides with unique properties, doping transition metals in it is attracting significant attentions for the processing of this relatively new class of materials. In this paper, a magnetic solid solution MAX phase V 2 (Sn 1− x A x )C ( A = Mn, Fe, Co) was synthesized by doping Mn/Fe/Co atoms into V 2 SnC by pressure-less sintering. The XRD results show that when x = 0.4, the characteristic peak shifts to the right, and the substitution reaches saturation. SEM and TEM show that doping does not change the original layered morphology and hexagonal crystal form, but only the lattice constants decrease slightly. Magnetic test results indicate that V 2 (Sn 1− x A x )C is a typical low-temperature magnetic material with a Curie temperature around 60 K, and the magnetization increases with the increase of doping amount. Moreover, we explained the reasons of V 2 SnC doping A-site instead of M-site and the changing trend of the magnetic moments by first-principles calculations, which are consistent with the experimental results.
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2022
·Vol. 15
·期 1
·203
·
IF 4.967
Kewei Shu,Siyu Tian,Yu Wang,Guiqiang Fei,Liyu Sun,Huizhu Niu,Yihao Duan,Guangyu Hu,Haihua Wang
One of the most critical challenges for commercialization of sodium-ion battery (SIB) is to develop carbon anodes with high capacity and good rate performance. Graphene would be an excellent SIB anode candidate due to its success in various kinds of batteries. Liquid-phase exfoliation (LPE) method is an inexpensive, facile and potentially scalable method to produce less-defected graphene sheets. In this work, we developed an improved, dispersant-assisted LPE method to produce graphene composite materials from raw graphite with high yield and better quality for SIB anode. Here, bacterial cellulose (BC) was used as a green dispersant/stabilizer for LPE, a “spacer” for anti-restacking, as well as a carbon precursor in the composite. As a result, the carbonized BC (CBC)/LPE graphene (LEGr) presented improved performance compared to composite with graphene prepared by Hummers method. It exhibited a specific capacity of 233 mAh g−1at a current density of 20 mA g−1, and 157 mAh g−1after 200 cycles at a high current density of 100 mA g−1with capacity retention rate of 87.73%. This method not only provides new insight in graphene composites preparation, but also takes a new step in the exploration of anode materials for sodium-ion batteriesSIBs.Keywords:liquid phase exfoliation;bacterial cellulose;graphene composite;sodium-ion battery
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Yuhang Zhang,Jin Qian,Peifang Wang,Yuxuan He,Bianhe Lu,Sijing Tang,Kailin Xu
In this study, ternary magnetic nanocomposites (SrTiO 3 /CoFe 2 O 4 /rGO, SCG) doped with cobalt ferrite and loaded with rGO were successfully synthesized, and utilized to rapidly activate PMS to degrade LVF. After evaluating the efficacy of samples with different loading loads, SCG-1 (1 % wt rGO loading) was selected for further testing due to its optimal catalytic activity (degradation efficiency reached 87.4 % in 5 min). Quench experiments and electron paramagnetic resonance (EPR) analysis showed that SO 4 − , 1 O 2 , OH were the main active substance involved in LVF degradation. Based on the redox cycle of Co and Fe ions and the platform provided by perovskite and rGO, the reaction can be carried out quickly. The vulnerable sites and possible degradation pathways of LVF were further analyzed by density functional theory (DFT) calculation and LC-MS/MS analysis, and the developmental toxicity and ecological risk of intermediate products were determined based on toxicity assessment software (T.E.S.T). This study provided a new vision for realizing rapid antibiotic degradation in water environments and provided theoretical support for the subsequent research on novel nanomaterials.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 47
·期 3
·1117-1128
·
IF 3.925
Xiaoning Li,Huirui Zhu,Zihan Xing,Tao Gong,Meining Li,Dan Su,Wenting Liang,Rui Guo
A novel multifunctional graphene oxide nano drug carrier (GO@LM-SP-FA) was constructed by connecting a linear maltodextrin polymer (LM-SP) and folic acid (FA) to the surface of graphene oxide (GO) nanoparticles. Doxorubicin hydrochloride (DOX) as a model drug was loaded onto the GO@LM-SP-FA through π–π stacking, hydrogen bonding and hydrophobic interaction. The GO@LM-SP-FA nanomaterial possessed excellent photothermal conversion efficiency, double-targeted drug delivery and near-infrared light (NIR)/pH triggered drug release. More importantly, GO@LM-SP-FA combined the cancer cell targeting of FA, showing excellent cancer-killing efficiency in HeLa (78%) and MCF-7 (61%). Therefore, the novel nano-drug carrier synthesized in this paper has potential practical application value in the treatment of cancer, especially in cervical cancer which has high FA expression.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Yanzhi Fan,Yao Yu,Peng Wang,Jingjing Sun,Mingjie Hu,Jianguo Sun,Yifu Zhang,Chi Huang
Aqueous ammonium-ion energy storage systems have recently gained continuous attention owing to the advantages of sustainability and environmental-friendliness in the grid-scale application. However, ammonium-ion supercapacitors are still in their infancy, and it is of great challenge in developing suitable materials for application in wearable energy storage devices. Herein, we develop a vanadium oxide hydration (V 2 O 5 · n H 2 O)/reduced graphene oxide (rGO) composite film (denoted as VGF) as a free-standing paper-like electrode for ammonium-ion storage, where V 2 O 5 · n H 2 O shows an expanded interlayer spacing and is sandwiched by rGO through chemical bonds. As a result, the designed VGF exhibits a capacitance of 600F·g −1 at 0.2 A·g −1 and good cyclability of over 10,000 cycles with a retention of 93 % using PVA/NH 4 Cl gel electrolyte. Meanwhile, the ammonium-ion storage mechanism in VGF electrode is further verified to be dominated by the intercalation pseudocapacitance and electric double-layer capacitance. Furthermore, the quasi-solid-state symmetric supercapacitor (SSC) has been also assembled to assess the feasibility of practical applications in wearable devices . As expected, the SSC possesses an areal capacitance of 241 mF·cm −2 at 0.1 mA·cm −2 (0.82 Wh·m −2 at 0.09 W·m −2 ) and an excellent cyclability of 20,000 cycles with a retention of 92 %, which is comparable to that achieved in the vanadium oxides powder-made electrodes and the SSC made of. Together with the excellent flexibility and feasibility of parallel/series combination, the VGF SSC devices shows great possibility for the applications in wearable devices, which further proves the great potential of this designed VGF free-standing electrode for ammonium-ion storage.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Separations
·
2022
·Vol. 9
·期 12
·391
·
IF 3.344
Zhiquan Yang,Chong He,Wenning Liao,Xinyi Zhang,Wanhui Liu,Baosheng Zou
Dye effluent damaged the water environment and human health with its massive discharge. In order to eliminate dye from the water environment, a variety of adsorbents were used to investigate dye removal. Graphene oxide (GO) attracted extensive attention due to its excellent surface property in the degradation of dye wastewater. Modified GO with multifunctional groups helped to improve adsorption performance. 3-Aminopropyltriethoxysilane modified GO (AS-GO) was fabricated for the removal of Orange G (OG) in this study. The results showed that AS-GO had an excellent adsorption ability of OG. During the reaction process, the maximum adsorptive capacity of OG was up to 576.6 mg/g at T = 313 K and pH = 3 with the initial OG concentration of 100 mg/L and the initial adsorbent dose of 2.5 g/L. The adsorption kinetic process of AS-GO conformed to the pseudo-second-order and Langmuir models. The spontaneous and endothermic adsorption of OG occurred in the adsorption process. The main adsorption mechanisms were electrostatic, π–π and hydrogen bonding interactions in the reaction process. After four cycles of AS-GO, it maintained high removal efficiency owing to its remarkable stability. The scheme of GO modified with AS could hinder the agglomeration of GO and provide more active sites, which would further enhance the adsorption properties and expand its application in water purification.Keywords:adsorption;Orange G;graphene oxide;3-aminopropyltriethoxysilane
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Nanomedicine
·
2023
·
IF 8
Kai Dong,Zhuang-Zhuang Zhao,Jian Kang,Lei-Ruo Lin,Wen-Ting Chen,Jin-Xi Liu,Xiang-Long Wu,Ting-Li Lu
Background Combined chemotherapy is often affected by the different physicochemical properties of chemotherapeutic drugs, which should be improved by the reasonable design of co-loaded preparations.Purpose A kind of simple but practical graphene oxide (GO) wrapped mesoporous silica nanoparticles (MSN) modified with hyaluronic acid (MSN@GO-HA) were developed for the co-delivery of cinnamaldehyde (CA) and doxorubicin (DOX), in order to enhance their combined treatment on tumor cells and reduce their application defects.Methods The MSNCA@GODOX-HA was constructed by MSNCA (loading CA via physical diffusion) and GODOX-HA (modified with HA and loading DOX via π–π stacking) through the electrostatic adsorption, followed by the physicochemical characterization, serum stability and in vitro release study. Cytotoxicity on different cells was detected, followed by the tumor cell uptake tests. The intracellular reactive oxygen species (ROS) changes, mitochondrial functions and activities of caspase-3/-9 in MCF-7 cells were also evaluated, respectively.Results The MSNCA@GODOX-HA nanoparticles kept stable in FBS solution and achieved pH-responsive release behavior, which was beneficial to increase the accumulation of CA and DOX in tumor cells to enhance the treatment. MSNCA@GODOX-HA exerted higher cytotoxicity to MCF-7 human breast cancer cells than H9c2 cardiac myocyte cells, which were not only attributed to the active targeting to tumor cells by HA, but also related with the activation of intrinsic apoptotic pathway in MCF-7 cells induced by CA, which was mediated by the specific ROS signal amplification and the interference with mitochondrial function. Moreover, the efficacy of DOX was also enhanced by the above process.Conclusion The establishment of the MSNCA@GODOX-HA nanoparticles played a role in promoting strengths and restricting shortcomings of CA and DOX, thereby exerting their function and achieving efficient treatment against cancer.
✓ 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）