CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Guoshen Yang,Xianqi Xu,Gangrui Qu,Jie Deng,Yachao Zhu,Chi Fang,Olivier Fontaine,Pritesh Hiralal,Jiaxin Zheng,Hang Zhou
The earth-abundant magnesium resource and aqueous electrolyte make aqueous magnesium-ion batteries (AMIBs) a promising post-lithium-ion battery technology to synchronously address cost and safety concerns. Nonetheless, the freeze issue of aqueous electrolytes is curbing the development of AMIBs working at low-temperature conditions. Here, we report an MgCl 2 solution having a great low-temperature property via anion and concentration adjustment, which roots in the variation of the pristine hydrogen bond reticulation. Consequently, a 4 M MgCl 2 aqueous electrolyte endows a low freezing point (−62 °C) as well as ultra-high ionic conductivity (2.77 mS/cm at −50 °C). By using 4 M MgCl 2 as an electrolyte, the MnO 2 //VO 2 battery is capable of working in a wide temperature range from +25 to −50 °C, achieving a high discharge capacity of 97.9 mAh/g (0.1 A/g) and a high cycling capability of 1000 cycles (∼90 % capacity retention at −20 °C). Furthermore, MgCl 2 can be well compatible with polyacrylamide into an outstanding hydrogel electrolyte (in terms of mechanical property, anti-freeze performance, and high ionic conductivity) for a flexible quasi-solid-state MIBs application. The assembled flexible device attains appealing electrochemical properties across a broad temperature region, while the constructed pouch cell demonstrates superior flexibility and reliable safety. Our current exploration depicts an expeditious but productive paradigm for devising the high-performing AMIBs for low-temperature energy storage sectors.
✓ 已验证
产品关联
DOI
高影响因子
Biosensors-Basel
·
2023
·Vol. 13
·期 1
·116
·
IF 5.4
Jingli Yin,Huiying Ouyang,Weifeng Li,Yumei Long
Currently, accurate quantification of antibiotics is a prerequisite for health care and environmental governance. The present work demonstrated a novel and effective electrochemical strategy for chloramphenicol (CAP) detection using carbon-doped hexagonal boron nitride (C-BN) as the sensing medium. The C-BN nanosheets were synthesized by a molten-salt method and fully characterized using various techniques. The electrochemical performances of C-BN nanosheets were studied using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results showed that the electrocatalytic activity ofh-BN was significantly enhanced by carbon doping. Carbon doping can provide abundant active sites and improve electrical conductivity. Therefore, a C-BN-modified glassy carbon electrode (C-BN/GCE) was employed to determine CAP by differential pulse voltammetry (DPV). The sensor showed convincing analytical performance, such as a wide concentration range (0.1 µM–200 µM, 200 µM–700 µM) and low limit of detection (LOD, 0.035 µM). In addition, the proposed method had high selectivity and desired stability, and can be applied for CAP detection in actual samples. It is believed that defect-engineeredh-BN nanomaterials possess a wide range of applications in electrochemical sensors.Keywords:hexagonal boron nitride;carbon doping;chloramphenicol;differential pulse voltammetry;molten salt synthesis
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS CHARACTERIZATION
·
2023
·
IF 4.7
Zhi-Qiang Wang,Yun-Guo Yang,Lu Tai,Leo Woon-Ming Lau,Dan Zhou
Surface charging in electron spectroscopy for chemical analysis (ESCA) detrimentally affects the analytical accuracy, and the common charge neutralization techniques struggle to handle the heterogeneous surface charging which plagues ESCA studies of many high-impact composites having different electrically resistive constituents. To facilitate the research of such composites, this report articulates the scientific causes of heterogeneous surface charging plaguing such research and discloses technical details in mitigating the problems by an in-situ sub-nanometer gold coating technique. Briefly, the report describes a method of translating the common in-situ sputter-cleaning facility in an X-ray photoelectron spectroscopy (XPS) system to a means for the precise deposition of a few gold monolayers onto a sample. Such an ultrathin gold overlayer guarantees the presence of a uniform surface potential that is virtually equal to spectrometer-ground and thereby relieves any heterogeneous surface charging problems in XPS. The Au 4f 7/2 peak of the overlayer is also a more accurate ESCA/XPS reference. Further, the report clarifies that the in-situ deposition of gold and the XPS monitoring of the deposition is essential. An arbitrary thick gold overlayer may block almost all XPS signals from the sample, and too little gold deposition fails the purpose of mitigating heterogeneous surface charging. In short, the method supports particularly studies of composites with heterogeneities in electrical conductivity .
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 12
·2210223
·
IF 29.4
Jungang Wang,Yuhang Che,Yuwei Duan,Zhike Liu,Shaomin Yang,Dongfang Xu,Zhimin Fang,Xuruo Lei,Yong Li,Shengzhong (Frank) Liu
Cesium lead triiodide (CsPbI 3 ) is a promising light-absorbing material for constructing perovskite solar cells (PSCs) owing to its favorable bandgap and thermal tolerance. However, the high density of defects in the CsPbI 3 film not only act as recombination centers, but also facilitate ion migration, leading to lower PCE and inferior stability compared with the state-of-the-art organic–inorganic hybrid PSC counterpart. Theoretical analyses suggest that the effective suppression of defects in CsPbI 3 film is helpful for improving the device performance. Herein, the stable and efficient γ -CsPbI 3 PSCs are demonstrated by developing an acyloin ligand (1,2-di(thiophen-2-yl)ethane-1,2-dione (DED)) as a phase stabilizer and defect passivator. The experiment and calculation results confirm that carbonyl and thienyl in DED can synergistically interact with CsPbI 3 by forming a chelate to effectively passivate Pb-related defects and further suppress ion migration. Consequently, DED-treated CsPbI 3 PSCs yield a champion PCE of 21.15%, which is one of the highest PCE among all the reported CsPbI 3 PSCs to date. In addition, the unencapsulated DED-CsPbI 3 PSC can retain 94.9% of itsinitial PCE when stored under ambient conditions for 1000 h and 92.8% of its initial PCE under constant illumination for 250 h.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biomass Conversion and Biorefinery
·
2023
·
IF 4
Si Lin,Hou Juying,Lv Wei,Hou Qin,Xu Zhixiang,Ai Shiyun
In this paper, lignocellulose components were separated under mild conditions to achieve hierarchical utilization of biomass. Cellulose was retained in cellulose pulp with highly crystalline structure, and lignin powder was recovered, which offered a possibility for the high-value utilization of lignocellulosic biomass. The extracted lignin (EL) was carbonized and activated to prepare lignin-based porous carbon microspheres (LPCMs) and further used as a substrate to interact with fluorescein-5-isothiocyanate (5-FITC) for the detection of biogenic amines (BAs). The fluorescence of 5-FITC was found to be quenched in the presence of LPCMs. And then, upon addition of BAs, 5-FITC was released from the surface of LPCMs, which resulted in the fluorescence recovery of 5-FITC. Thus, a novel “turn off–on” fluorescent probe was constructed for sensitive and visual detection of BAs. Meanwhile, the retained cellulose skeleton structure was used to prepare a smart identification label for real-time and visual evaluation of the freshness of pork and shrimp. This work realized the improvement of comprehensive utilization rate of lignocellulose and developed a rapid, efficient, and sustainable method which combined natural lignocellulose materials with green analytical technology for visually evaluating food quality.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2022
·Vol. 19
·期 8
·2204992
·
IF 15.153
Shiyang Lin,Mai Yang,Jiajie Chen,Wei Feng,Yu Chen,Yufang Zhu
As the emerging modalities for tumor therapy, sonodynamic therapy (SDT) and chemodynamic therapy (CDT) can generate reactive oxygen species (ROS), typically inducing tumor cell apoptosis. However, the construction of more efficient sonosensitizers integrated with excellent Fenton/Fenton-like catalytic activity to improve the synergistic therapeutic effect of SDT and CDT is still highly challenging. In this study, 2D semiconductor FePS 3 nanosheets (NSs), as one of the metal phosphorus trichalcogenides for both sonosensitizer and Fenton catalyst, are successfully synthesized via an ultrasonic-assisted liquid phase exfoliation method from bulk FePS 3 and further modified with lipoic acid-polyethylene glycol (LA-PEG) to obtain FePS 3 -PEG NSs with desirable biocompatibility. The in vitro and in vivo results demonstrate that the engineered FePS 3 -PEG NSs induce the combinatorial SDT/CDT effect attributing to the enhanced ROS generation and significant glutathione depletion, which can conduct highly efficient and safe tumor inhibition and prolong the life span of tumor-bearing mice. This work provides the paradigm of semiconductor FePS 3 NSs as the integrative sonosensitizer/Fenton nanocatalyst for dual nanodynamic tumor therapy, paving the new way for exploring other 2D metal phosphorus trichalcogenides in biomedicine.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS & DESIGN
·
2023
·
IF 8.4
Bo Chen,Linrui Cai,Rangrang Fan,Min Mu,Di Chuan,Yangmei Ren,Haifeng Chen,Gang Guo
Photodynamic therapy (PDT) as emerging phototherapy has attracted extensive attention in cancer therapy. However, the overexpressed glutathione (GSH) and hypoxic conditions of the tumor microenvironment (TME) sevely limit the therapeutic efficiency of PDT. Herein, we design a multifunctional nanoplatform (CBDM) for cancer therapy consisting of photosensitizer (Ce6), bovine serum albumin (BSA), and polydopamine-manganese dioxide (MnO 2 ) nanocomplex, which is simultaneously modified by nucleolin-targeting AS1411 aptamer. This MnO 2 -based nanoplatform ameliorates tumor hypoxia and promotes oxygen production via the reaction between MnO 2 and endogenous H 2 O 2 and acid H + in the TME. Besides, this biocompatibility nanoplatform exhibits an augmented PDT effect and high photothermal conversion efficiency under 808 nm laser irradiation. Importantly, the MnO 2 -based nanoplatform achieves a significant in vivo synergistic therapeutic effect and fights against liver metastasis of breast cancer. As a result, the excellent biocompatibility, especially the superior anticancer efficacy, and suppression of tumor metastasis make the MnO 2 -based nanoplatform a promising candidate for cancer therapy.
✓ 已验证
产品关联
DOI
高影响因子
BIOELECTROCHEMISTRY
·
2022
·
IF 5.76
Yang You,Bin Luo,Cheng Wang,Hongtu Dong,Xiaodong Wang,Peichen Hou,Lijun Sun,Aixue Li
Gibberellins (GA 3 ) is an ubiquitous plant hormone, which plays a regulatory role in different growth stages of plants, so it is of great significance to develop a sensitive quantitative analysis method for GA 3 . In this study, carboxylated graphene oxide- carboxylated multi-walled carbon nanotubes-Fc (GO-MWNT-Fc) composite material and PDANPs-antibody (PDANPs-Ab) were sequentially modified to screen-printed electrodes (SPEs), and an ultrasensitive probe-free immunosensor for GA 3 was developed. Fc was applied to generate electrochemical signals. GO-COOH and MWNT-COOH can increase the catalytic ability of the sensor and bind the PDANPs-Ab nanoparticles. PDANPs nanomaterial were synthetized by a facile self-polymerization and used to bind with antibody, so as to increase the antibody loading of the sensor. The as-prepared immunosensor has the widest detection range (100 aM-1 mM) and lowest detection limit (17.4 aM) for GA 3 up to date. To our knowledge, it is the first electrochemical immunosensor for GA 3 . By changing the GA 3 antibody to ABA antibody, a sensitive and selective immunosensor for ABA was also fabricated. This immunosensor platform is simple, sensitive, and low cost. It opens broad prospect in on-site applications for biosensors in detecting of various biomolecules in precision agriculture.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Xudong Gong,Qiang Tian,Jiebiao Li,Ju Wang,Minhao Yan,Mark J. Henderson
Incorporation of fission products in spent nuclear fuel is of interest in the frame of safe storage of high-level nuclear waste in a deep geological repository. Uranyl oxyhydroxide films were grown on silicon wafer to represent the corrosion product formed on the surfaces of the fuel. Films were obtained by hydrolysis of uranyl ions (9 mM) in mild conditions (≤60 °C) using either Mg(OH) 2 , raw brucite, La(OH) 3 , or NH 4 OH to control the solution pH to ≈ 5.0. To identify the mineral phases we used the grazing-incidence X-ray technique. Atomic force microscopy data indicated that the surfaces of metaschoepite films prepared using either Mg(OH) 2 or brucite at 50 °C for 3 h were self-affine fractal ( D f = 2.5). The concentration (wt.%) of reactant ions detected in a metaschoepite film after reaction at 70 °C for three days as determined by X-ray fluorescence was: La (8.90) > Nd (5.6) > Ce (3.2) > Eu (2.5) > Pb (0.7) > Sr (0.14). Metaschoepite and sodium uranate hydrate were identified in a film formed in Cl-SO 4 -Na type groundwater from the Beishan area (China), the preselected area of a radioactive waste disposal repository.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Coatings Technology and Research
·
2022
·Vol. 20
·期 2
·713-724
·
IF 2.339
Cai Zhentao,Li Chunping,Zhang Daquan,Li Jin,Gao Lixin
Abstract Polyurethanes (PUs) are a polymer material with a wide range of applications and excellent mechanical properties. In this work, a modified polyurethane coating with the self-healing function is developed via the reaction between polytetrahydrofuran (PTMG), 2,4-toluene diisocyanate (TDI) and α-lipoic acid. The coatings are characterized by SEM and FTIR. The protection of the prepared coating for copper in 3 wt.% NaCl solution is investigated by the electrochemical measurements and the surface self-healing tests. The coating has stable protection from corrosion of the copper substrate in corrosive medium and shows a good self-healing ability. The healing behavior in morphology and corrosion resistance can be observed when heated above 60°C. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Shu-Yi Yao,Hao Li,Min Zhou,Tian-Chi Wang,Xue Yu,Yin-Sheng Xu,Jian-Hong Yi,Jian-Bei Qiu,Jie Yu,Xu-Hui Xu
X-rays play an extremely significant role in medical diagnosis, safety testing, scientific research, and other practical applications. However, as the main sources of radioactive pollution, the hazard of X-rays to human health and the environment has been a major concern. Herein, the explored perovskite scintillator of Cs2Zr1–xPbxCl6 in this work exhibits an ultrahigh radioluminescence intensity owing to the enhanced X-ray absorption for the introduction of Pb2+ ions. The Cs2Zr1–xPbxCl6 crystals are demonstrated as efficient scintillators with a self-trapped exciton emission and extremely high steady-state light yield (∼101,944 photons meV–1). This fascinating scintillator provides a convenient visual tool for X-ray detection even for an indoor lighting environment, reaching a low detection limit of ∼14.2 nGy·s–1, which is about 1/387 of the typical medical imaging dose (5.5 μGy·s–1). Moreover, X-ray imaging with a high resolution of 16.6 lp·mm–1 is achieved with the as-explored Cs2Zr1–xPbxCl6 scintillator film. Herein, the Cs2Zr1–xPbxCl6 scintillator provides a feasible strategy for X-ray monitoring in the field of biomedicine, high-energy physics, national security, and other applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Chuhan Zhang,Qingli Sui,Lin Lu,Yongjin Zou,Fen Xu,Lixian Sun,Dan Cai,Cuili Xiang
This paper presents CuCo 2 O 4 @MoNi-layered double hydroxides (CuCo 2 O 4 @MoNi-LDH) core–shell assemblies synthesized successfully by a stepwise process using hydrothermal and calcination methods. The morphology of a core–shell structure consisting of nanosheets grown uniformly on the surface of the hollow spheres was realized. The results showed that CuCo 2 O 4 @MoNi-LDH hollow spherical nano-sheets are an excellent choice for applications that require outstanding structural stability and a high specific surface area. A specific capacitance of 1286 F g −1 was obtained at a current density of 1 A g −1 , which indicates its promising application in supercapacitors . Furthermore, asymmetric supercapacitors assembled using CuCo 2 O 4 @MoNi-LDH positive electrodes achieved an ultra-high strength density of 68.1 Wh kg −1 at an energy density of 795.9 W kg −1 with an excellent cycling stability (i.e., the capacitance retention rate of 88 % after 6000 cycles). According to these findings, CuCo 2 O 4 @MoNi-LDH is a strong contender for power storage applications.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）