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Showing papers by "Chinese Academy of Sciences published in 2022"


Journal ArticleDOI
TL;DR: In this article, the authors reported a simple method to prepare novel two-dimensional (2D) Bi2O2CO3@MXene photocatalytic composite membranes as well as their multi-functional abilities for water treatment.

118 citations


Journal ArticleDOI
TL;DR: In this paper, a hybrid nanocomposite (FeCo/FeCoP@NMn-CNS-800) was constructed by one-step pyrolysis of the metal precursors and polyinosinic acid.

115 citations


Journal ArticleDOI
TL;DR: Wang et al. as discussed by the authors reported a method to synthesize phosphorus-doped MoS2/g-C3N4 layer-by-layer composite, which could expose more active sites and generate a strong interaction by forming Mo-N bonds for photocatalytic sterilization.

112 citations


Journal ArticleDOI
TL;DR: In this article, a hexapod-like pyrite nanosheets mineral cluster was prepared via a facile hydrothermal method, which possessed a higher adsorption capacity and catalytic activity to ciprofloxacin (20mg/L), which could be completely degraded within 10min at pH 4.0.
Abstract: Herein, a novel hexapod-like pyrite nanosheets mineral cluster was prepared via a facile hydrothermal method. Compared with classical homogeneous Fenton processes, this catalyst possessed a higher adsorption capacity and catalytic activity to ciprofloxacin (20 mg/L), which could be completely degraded within 10 min at pH 4.0. •OH was the main reactive oxygen species responsible for ciprofloxacin degradation. Br− (≥ 1 mM), I− (≥ 1 mM), and high concentration of F− ions (≥ 10 mM) exhibited an inhibition effect on ciprofloxacin degradation, but the Cl− ions (0–100 mM) did not show obvious effects on ciprofloxacin removal. Thirteen intermediates were qualitatively identified, and degradation mechanism was tentatively proposed for ciprofloxacin. Several toxic intermediates were produced, but they could be fully mineralized and detoxified by this heterogeneous Fenton catalyst after 30 min reaction. The work provides a novel heterogeneous Fenton catalyst to purify and detoxify antibiotics as well as other refractory organic pollutants contaminated wastewater.

93 citations


Journal ArticleDOI
TL;DR: In this paper, a nitrogen-doped e-MnO2 (mO2@N) has been prepared using electrochemical deposition and heat treatment under nitrogen atmosphere.

92 citations


Journal ArticleDOI
TL;DR: In this article, N/B co-doped biochars were employed as metal-free activators of peroxydisulfate (PDS) for tetracycline degradation, more importantly, the roles of dopants and relative contribution of radical vs nonradical oxidations were comprehensively investigated.
Abstract: In this study, N/B co-doped biochars were employed as metal-free activators of peroxydisulfate (PDS) for tetracycline degradation, more importantly, the roles of dopants and the relative contribution of radical vs nonradical oxidations were comprehensively investigated. Integrating with electron paramagnetic resonance and kinetics calculations, we showed that co-doping N and B into biochars not only boosted the catalytic activity but also switched the radical PDS-activated process into the electron transfer-dominated nonradical process. Compared with pristine biochar/PDS systems (22%), the nonradical contribution of N/B co-doped biochar/PDS systems increased to 59%, exhibiting outstanding stability and selectivity. Galvanic oxidation tests and theoretical simulations unveiled that doped biochars as conductive tunnels accelerate the potential difference-driven electron transfer from the highest occupied molecular orbital of pollutants to the lowest unoccupied molecular orbital of PDS due to the lower energy gap. This study provided new insights into the critical role of heteroatom-doped carbocatalysts in PDS nonradical activation.

92 citations



Journal ArticleDOI
TL;DR: In this article, bismuth-based high entropy compound (HEC), Bi(Zn0.2Al 0.2Sn0.1)O3 (BZMASZ), was introduced into BaTiO3-Na0.5Bi0.3 (BT-NBT) matrix, in order to improve the comprehensive energy storage performance.

80 citations


Journal ArticleDOI
TL;DR: In this paper, the authors describe different intriguing dimensions of biochar interactions with organic contaminants, which including: (i) an introduction to biochar preparation and the related physicochemical properties, (ii) an overview of mechanisms and factors controlling the adsorption of organic contaminants onto biochar, and (iii) a summary of the challenges and an outlook of the further research needs in this issue.

77 citations


Journal ArticleDOI
TL;DR: In this article, a novel zirconium hydroxide nanoparticle encapsulated magnetic biochar composite (ZBC) derived from rice residue was synthesized for the adsorptive capture of As(III) and As(V) from aqueous solutions.

72 citations


Journal ArticleDOI
TL;DR: This work develops the defective H–Ti3C2 NSs as high-efficiency and safe sonosensitizers for photothermal-enhanced SDT of cancer, extending the biomedical application of MXene-based nanoplatforms.

Journal ArticleDOI
01 Jun 2022
TL;DR: Bonnassieux et al. as mentioned in this paper presented a roadmap for the key areas of flexible and printable electronics. And they highlighted the current status and future challenges in the areas covered by the roadmap and highlighted the breadth and wide-ranging opportunities made available by flexible electronics technologies.
Abstract: Author(s): Bonnassieux, Y; Brabec, CJ; Cao, Y; Carmichael, TB; Chabinyc, ML; Cheng, KT; Cho, G; Chung, A; Cobb, CL; Distler, A; Egelhaaf, HJ; Grau, G; Guo, X; Haghiashtiani, G; Huang, TC; Hussain, MM; Iniguez, B; Lee, TM; Li, L; Ma, Y; Ma, D; McAlpine, MC; Ng, TN; Osterbacka, R; Patel, SN; Peng, J; Peng, H; Rivnay, J; Shao, L; Steingart, D; Street, RA; Subramanian, V; Torsi, L; Wu, Y | Abstract: This roadmap includes the perspectives and visions of leading researchers in the key areas of flexible and printable electronics. The covered topics are broadly organized by the device technologies (sections 1–9), fabrication techniques (sections 10–12), and design and modeling approaches (sections 13 and 14) essential to the future development of new applications leveraging flexible electronics (FE). The interdisciplinary nature of this field involves everything from fundamental scientific discoveries to engineering challenges; from design and synthesis of new materials via novel device design to modelling and digital manufacturing of integrated systems. As such, this roadmap aims to serve as a resource on the current status and future challenges in the areas covered by the roadmap and to highlight the breadth and wide-ranging opportunities made available by FE technologies.

Journal ArticleDOI
TL;DR: In this article, a hyperbranched flame retardant (HBFR) with rigid backbone structure was synthesized through a facile strategy for epoxy resins with simultaneously improved flame retardancy, toughness and strength as well as glass transition temperature.

Journal ArticleDOI
TL;DR: In this paper, the authors summarized the advances that have been made in the development of sulfur-based fluorescent probes for HOCl, and their reaction mechanisms were emphatically discussed, and the achievements, challenges, and perspectives in this field were outlooked.

Journal ArticleDOI
TL;DR: In this article, a general theory for bistable vibration isolators (BVIs) is presented and the nonlinear restoring force and potential energy are obtained through analyzing the general model of BVIs with three-spring quasi-zero stiffness model.

Journal ArticleDOI
01 Jan 2022-Energy
TL;DR: Wang et al. as discussed by the authors proposed a hybrid decomposition method coupling the ensemble patch transform (EPT) and the complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN), where EPT is utilized to extract the trend of wind speed, then CEEMDan is employed to divide the volatility into several fluctuation components with different frequency characteristics.

Journal ArticleDOI
TL;DR: A quantitative tuning rule for the time-delayed ADRC (TD-ADRC) structure based on the typical first order plus time delay (FOPTD) model is proposed, revealing Relative delay margin is revealed as a critical robustness metric among others.
Abstract: Active disturbance rejection controller (ADRC) has achieved soaring success in motion controls featured by rapid dynamics. However, it turns obstreperous to implement it in the power plant process with considerable time-delay, largely because of the tuning difficulty. To this end, this article proposes a quantitative tuning rule for the time-delayed ADRC (TD-ADRC) structure based on the typical first order plus time delay (FOPTD) model. By compensating the FOPTD process as an integrator plus time delay in low frequencies, the gain parameter of TD-ADRC can be related to a scaled time constant which shapes the closed-loop tracking performance. Bandwidth parameter of extended state observer is scaled as a dimensionless parameter. A sufficient stability condition of TD-ADRC is theoretically derived in terms of the scaled parameter pair, the range of which falls within the practical interest. Relative delay margin is revealed as a critical robustness metric among others, a default pair of scaled parameter setting is recommended as well as an explicit retuning guideline according to the user's preference for performance or robustness. Simulation and laboratory water tank experiment validate the tuning efficacy and a coal mill temperature control test depicts a promising prospective of the proposed method in process control practice.

Journal ArticleDOI
TL;DR: A novel personalized diagnosis technique is proposed for early Alzheimer’s disease diagnosis via coupling interpretable feature learning with dynamic graph learning into the GCN architecture and outputs competitive diagnosis performance as well as provide interpretability for personalized disease diagnosis.

Journal ArticleDOI
TL;DR: In this article, a breeze-driven triboelectric nanogenerator (BD-TENG) was proposed to efficiently harvest breeze energy in the farmland environment, which can be widely used in farmland environments to provide energy for agricultural sensor networks.

Journal ArticleDOI
TL;DR: In this article, the authors present representative and latest research progress of improving CDT antitumor effects, involving the amplification strategy of oxidative stress triggered by endogenous/exogenous stimuli.

Journal ArticleDOI
TL;DR: In this paper, the static and dynamic lubrication parameters of the floating ring bearing (FRB) were investigated considering the effects of various coupling factors such as clearance ratio, vertical load and rotating speed.

Journal ArticleDOI
TL;DR: In this article, the fundamental reactions of Zn anodes in both alkaline and neutral electrolytes were elucidated in detail, including surface passivation, dendritic growth, hydrogen evolution, and shape change in the Zn stripping/plating procedure.

DOI
01 Jan 2022
TL;DR: In contrast to the major families of small molecules and antibodies, cyclic peptides, as a family of synthesizable macromolecules, have distinct biochemical and therapeutic properties for pharmaceutical applications as discussed by the authors.
Abstract: In contrast to the major families of small molecules and antibodies, cyclic peptides, as a family of synthesizable macromolecules, have distinct biochemical and therapeutic properties for pharmaceutical applications. Cyclic peptide-based drugs have increasingly been developed in the past two decades, confirming the common perception that cyclic peptides have high binding affinities and low metabolic toxicity as antibodies, good stability and ease of manufacture as small molecules. Natural peptides were the major source of cyclic peptide drugs in the last century, and cyclic peptides derived from novel screening and cyclization strategies are the new source. In this review, we will discuss and summarize 18 cyclic peptides approved for clinical use in the past two decades to provide a better understanding of cyclic peptide development and to inspire new perspectives. The purpose of the present review is to promote efforts to resolve the challenges in the development of cyclic peptide drugs that are more effective.

Journal ArticleDOI
TL;DR: In this article, the authors used positive matrix factorization (PMF) and absolute principal component score-multiple linear regression models (APCS-MLR) to identify promising sources of metals in sediment samples.

Journal ArticleDOI
TL;DR: In this article, a non-equilibrium photochemical strategy for preparing OV-rich Co3O4 at ambient temperature and pressure was proposed, which showed that the OVs can promote the adsorption/activation of CO2 and water, while considerably lowering the free energy barrier for COOH* formation.
Abstract: The introduction of oxygen vacancies (OVs) in metal oxides has been proved to be a powerful means for promoting the activation of CO2. However, the lack of effective methods for OVs implantation currently hampers the rational design of highly-active CO2 reduction catalysts. Herein, we reported a novel non-equilibrium photochemical strategy for preparing OV-rich Co3O4 at ambient temperature and pressure. Results confirm that the single isolated OV and Co-OV associates are the predominant defect types within Co3O4 skeleton. Moreover, the OVs concentration in Co3O4 can be tuned over a wide range by merely controlling the light-irradiation time. The experiments and theoretical calculations reveal that the OVs can promote the adsorption/activation of CO2 and water, while considerably lowering the free energy barrier for COOH* formation, thereby accelerating the reaction kinetics. The OV-rich Co3O4 displays a 26.7-fold improvement in CO2 reduction activity over the OV-poor Co3O4. The turnover frequency of Co atoms in OV-rich Co3O4 reaches 3.754 s−1, which is one of the best reported catalysts for CO2 photoreduction to date. Moreover, we also successfully synthesize a series of defect-rich metal oxides and metal sulfides using this photochemical method, such as TiO2, Fe2O3, CuO, Mn3O4, CeO2, V2O5, MoO3, ZrO2, Bi2O3, MoS2, MnS, CdS, NiS2-Ni3S4 and Bi2S3-BiS2, which suggests its universality. We believe this photochemical method developed herein greatly enriches the knowledge for the synthesis of defective nanocrystals under mild synthesis conditions. Importantly, the relationship between the OVs and the CO2 reduction performance has been established by various characterizations, which may guide the design of highly-efficient catalysts for CO2 photofixation.

Journal ArticleDOI
01 Jan 2022-Energy
TL;DR: An improved electricity price forecasting model is developed that offers the advantages of adaptive data preprocessing, advanced optimization method and kernel-based model, and optimal model selection strategy, and a newly proposed optimal models selection strategy is applied to determine the developed model that provides the most desirable forecasting result.

Journal ArticleDOI
TL;DR: In this article, two 3D 3d-4f bimetal organic frameworks (ZnCe-MOF and CuCe -MOF) were created through hydrothermal method.

Journal ArticleDOI
TL;DR: In this paper , a model for predicting carbon emission intensity based on factor analysis and an extreme learning machine was proposed to analyze the trends in the development of carbon emissions to achieve the goal of reducing carbon emissions.


Journal ArticleDOI
TL;DR: In this article, the release-uptake paths of lattice oxygen and the chemical reaction laws at interface were studied in detail using a composite metal oxide (NiFe2O4) as an oxygen carrier through (in-situ) XPS technology coupled with fixed bed experiments.