APPLIED SURFACE SCIENCE
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2024
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IF 6.3
Kun Wang,Shen Yu,Peng Jiang,Wenrui Liu,Man-Man Yuan,Wangyu Tong,Lihua Chen,Zhao Deng,Baolian Su
CO 2 reduction by a sustainable pathway such as photothermal catalysis is highly demanded currently, high carrier recombination rate still severely limits the performance of photothermal catalysis. Constructing heterojunction interfaces with high exposed area is an effective strategy to solve the problem of carrier recombination. However, fine control of the interface structure is still highly challenging. Herein, Density functional theory (DFT) calculations were constructed to reveal that metallic Bi leads to more densities of states (DOS) generation at the conduction band edge in Bi-BiOBr, which argues that photogenerated electrons are more likely to be delivered to metallic Bi. A TiO 2 @Bi-BiOBr hollow hierarchical core–shell heterojunction was designed, providing a highly exposed interface and Bi between interfaces. Such structure endows the catalyst with excellent photothermal catalytic performance, achieving a CO yield of 30.4 μmol·h −1 ·g −1 . The highly improved performance is attributed to interfacial thermoelectrons transfer boosted by the construction of TiO 2 @BiOBr heterojunction as well as metal Bi. And a possible CO 2 reduction pathway is proposed, which is consistent with the Carbine pathway. This study provides an exciting idea for the modulation of photoelectron transfer at catalyst interfaces.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Yanyu Song,Xianbo Sun,Long D. Nghiem,Jun Duan,Wen Liu,Yongdi Liu,Zhengqing Cai
Building a heterojunction is a fascinating option to guarantee sufficient carrier separation and transfer efficiency, but the mechanism of charge migration at the heterojunction interface has not been thoroughly studied. Herein, MIL-53(Fe)/Bi 4 O 5 I 2 photocatalyst with a Z-scheme heterojunction structure is constructed, which achieves efficient photocatalytic decontamination under solar light. Driven by the newly-built internal electric field (IEF), the formation of Fe-O-Bi electron migration channel allows for rapid separation and transfer of charge carriers at the heterojunction interface, confirmed by the material characterization and density functional theory (DFT) calculation. The narrower band gap and improved visible light response also contribute to the enhanced photocatalytic activity of composite materials. With levofloxacin as the target pollutant, the optimal MIL-53(Fe)/Bi 4 O 5 I 2 achieves complete removal of pollutant within 150 min, the photocatalysis rate of which is ca. 4.4 and 26.0 times that of pure Bi 4 O 5 I 2 and MIL-53(Fe), respectively. Simultaneously, the optimal composite material exhibits satisfactory photodegradation of seven fluoroquinolones, and the photocatalysis rates are as follows: lomefloxacin > ciprofloxacin > enrofloxacin > norfloxacin > pefloxacin > levofloxacin > marbofloxacin. DFT calculations reveal a positive relationship between degradation rate and Fukui index (ƒ 0 ) of main carbon atoms in seven fluoroquinolones. This study sheds light on the existence of electron migration channels at Z-scheme heterojunction interface to ensure sufficient photoinduced carrier transfer, and reveals the influence of pollutant structure on photolysis rate.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Haichuan He,Xiao Yu,Wei Wang,Liu Deng,Hao Zeng,Liqiang Wang,Ke Zeng,Jianhan Huang,Minghui Yang,You-Nian Liu
Bismuth-based materials have emerged as promising electrocatalysts for the electrochemical reduction of carbon dioxide (eCO 2 RR) to HCOOH. However, it remains challenges to meet the practical application requirements and identify the active sites of bismuth-based catalysts in eCO 2 RR. Herein, bismuthate (MBi 2 O 4 , M = Ca, Cu, Zn) derived nanosheet-like electrocatalysts with metal-modified edge defects are developed. During electrochemical processes, MBi 2 O 4 pre-catalyst undergoes surface reconstruction to expose more active Bi 0 sites and to form abundant metal-modified edge defects, which facilitate the modulation of charge state of adjacent Bi sites and improve the adsorption of *OCHO intermediate, thereby enhancing the selectivity of eCO 2 RR towards HCOOH. The Ca-modified defect-rich Bi catalyst exhibits a maximum HCOOH Faradaic efficiency of 94.3 % at an industrially relevant current density of 400 mA cm −2 , together with high stability/reproducibility of 55 h. This work proposes a new strategy for construction of Bi-based catalysts and explores its structural reconstruction mechanism during the electrocatalytic process, opening a new window for design of eCO 2 RR catalysts.
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高影响因子
Journal of Materials Chemistry A
·
2025
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IF 9.5
Junbin Liao,Qishun Zhang,Yu Xu,Shiyu Zhou,Yifan Xu,Wenlong Ding,Zhiqiang Wu,Haoyu Liu,Yanqing Xu,Huimin Ruan,Jiangnan Shen
The ion separation performance of polymer membrane can be significantly enhanced by constructing suitable and stable ion channels within the dense matrix. In this work, we fabricated four anion exchange membranes (AEMs) based on a type of distorted poly(aryl ether sulfone) bearing dual-side-chains and explored the influence of these dual-side-chains by tuning the ratio of the two on the separation performance of Cl−/F− and Cl−/SO42−. Small-angle X-ray scattering analysis indicated that the as-prepared AEMs in wet state possessed sub-nanometer ion channels with a size of 0.334 nm, which resulted from the synergetic modification of the distorted main chains and dual-side-chains. In addition, the stability of the ion channels could be verified by a very low swelling ratio of 5.3%. The AEM with the smallest ion channel demonstrated superior perm-selectivity (Cl−/SO42−) of 52.21 during the electrodialysis (ED) process, compared to other AEMs, such as ACS AEM, which showed a selectivity of 18.63. In addition, the optimum AEM (PPH-sIm10−X-5NX) also exhibited selectivity for Cl−/F− due to its dense structure and hydrophobic side chains. By using free volume and electrostatics-driven simulations, it was inferred that the ion-blocking effect of the dense membrane structure on the transport of larger ions was effective. As a result, this dual-side-chain polymer with a distorted backbone is conducive to constructing stable sub-nanometer ion channels in AEMs for mono-/bi-valent anion resource recovery.
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高影响因子
VACUUM
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2024
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IF 3.8
Bairui Tao,Xiangru Ren,XiaoJie Liu,Fengjuan Miao
The ZIF-67/NiS composite electrode was prepared on nickel foam (NF) matrix by hydrothermal method . NiS has been widely studied in sensors and supercapacitors due to its good electron transfer ability and good pseudocapacitor performance. Therefore, we prepared ZIF-67/NiS composite electrode. The synthesised ZIF-67/NiS composite electrode not only has certain electrochemical performance of battery type electrode, but also is sensitive to lactic acid (LA), and can be used as a non-enzymatic LA sensor and a dual-function material for supercapacitors . The detection limit of LA concentration in alkaline solution is 0.8 μM, and the sensitivity is 1.34 μA μM −1 cm −2 . Indicating that the electrode has good electrochemical sensing performance. The GCD test results show that the charging capacity of the ZIF-67/NiS is 2.5 times that of the ZIF-67. The ZIF-67/NiS composite has good cyclic performance, and the capacitance retention rate of the ZIF-67/NiS composite is 87% at 10 A/g current density .
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高影响因子
APPLIED SURFACE SCIENCE
·
2024
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IF 6.3
Yanni Li,Yujia Han,Hongxia Li,Xiaohui Niu,Deyi Zhang,Haiyan Fan,Kunjie Wang
A novel visible-light-driven type II p-n heterojunction CAU-17/MoS 2 photocatalytic antifouling biocide was prepared and indicated significant inhibition against the most pharmaceutically recognized harmful microorganisms: gram-positive Staphylococcus aureus ( S. aureus ), gram-negative Escherichia coli ( E. coli ) and the drug-resistant bacterium methicillin-resistant Staphylococcus aureus (MRSA). The antimicrobial mechanism is attributed to the production of reactive oxygen species (ROS) such as •OH, 1 O 2 due to the photocatalytic properties of CAU-17/MoS 2 heterojunction. The electron-hole complexation efficiency of the nanocomposites was analyzed using photoluminescence spectroscopy and characterized using electron microscope. It was found that the heterojunction structure of the nanocomposites provided multiple charge transfer channels to significantly improve the transporting and separating efficiency for the photo-induced electron-hole pairs, which consequently facilitated the production of ROS. Given the promising antimicrobial effects, further investigation on the broader application of CAU-17/MoS 2 biocides is needed to test the cytotoxicity, as well as the post-bacteriostatic wound healing effect upon animal models.
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高影响因子
JOURNAL OF CATALYSIS
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2018
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IF 6.759
Zhuo Zong,Kebin Xu,Dongliang Li,Zhenghua Tang,Wei He,Zhen Liu,Xiufang Wang,Yong Tian
Bimetallic core-shell nanostructures have been gaining considerable research attentions recently, mainly thanks to their versatile applications in many fields, including catalysis, electrocatalysis, electronic, sensing and so on. Herein, we demonstrate a peptide templated Au@Pd core-shell structure for both oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER). By employing peptide sequence FlgA3 as surface capping agent, core-shell structure with Pd nanoparticles coated on the surface of Au nanoparticles were prepared. The Au@Pd core-shell structures demonstrated effective electrocatalytic activities toward both ORR and HER, whereas the catalytic activity was optimized by tuning the Pd-to-Au ratio. Among a series of samples tested, we discovered that the Au@Pd 1.0 sample exhibited the best ORR activity, superior to that of Pt/C and Pd/C, while its HER activity was also among the finest, close to that of Pt/C and Pd/C. The Au@Pd 1.0 sample also exhibited remarkable stability beyond Pt/C and Pd/C in both ORR and HER. Such intriguing electrocatalytic performances are attributed to the core-shell structure induced lattice strain. The results offer reliable pathway for designing peptide templated core-shell bimetallic nanostructures as dual or multiple functional electrocatalysts with excellent electrocatalytic activities and longevity.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Dequan Wei,Shenghua Lv,Jingjing Zuo,Jinru Liu,Jialin Wang,Leipeng Liu,Qiao Zeng
With the rapid development of the field of flexible electronics, it is necessary to develop more new flexible sensor materials with a high degree of flexibility, stretchability, biosafety, and good electrical conductivity to better achieve wearable with the human body. Cellulose hydrogels are promising building blocks for flexible sensors due to their renewability and excellent mechanical strength properties. In this study, we demonstrate an imidazolium ionic cellulose/polyacrylic acid hydrogel (ILHPMC/PAA) with high flexibility, antimicrobial properties and electrical conductivity. Firstly, epoxidized imidazole ionic liquids were synthesized using methyl imidazole as raw material, and imidazole ionic cellulose was prepared by grafting modified hydroxypropyl methyl cellulose (HPMC). Imidazolium ionic cellulose hydrogels were prepared by one-step cross-linking and forming a copolymeric bi-network with acrylic acid according to the principle of free radical polymerisation. This hydrogel has high flexibility, stretchability, biocompatibility, and desired electrical conductivity due to the introduction of imidazole ions, and the sensing sensitivity factor (GF) reaches 6.83. The tensile strength can be up to 1.2 MPa, and it also has excellent antibacterial properties, with an antibacterial zone diameter of up to 29.25 mm. This provides insights into the development of cellulose-based sustainable sensing hydrogel sensors for wearable ionic conductive sensing.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Qirui Tian,Weiqing Zhou,Qiong Cai,Xiaoyun Pan,Guanghui Ma,Guoping Lian
In polydopamine (PDA)-supported in situ complex coacervation, PDA is pre-coated onto emulsion droplets, and further applied as an interlayer to support the interfacial immobilization of coacervates biopolymers. In the current research, the stepwise immobilization of gelatin (GE) and gum Arabic (GA) onto PDA layer is monitored to in-depth investigate the mechanism of PDA layer as coating material and functional substrates. GE and GA were applied as adsorbates, with different forms of PDA (spherical shell, planar solid, and nanoparticles) as substrates. Real-time observations of the binding steps were performed using quartz crystal monitor with dissipation (QCM-D) and isothermal titration calorimetry (ITC). Meanwhile, using PDA-supported coacervates as encapsulating material, sustained release of essential oil volatiles was also evaluated, either dispersed in detergent solution or freeze dried in open air. The anti-oxidation performance was determined by measuring the absorbance of lipid hydroperoxide using UV spectrophotometer. The results revealed that PDA enabled synergistic immobilization of biopolymers through chemical bonding and adhesive force during the processing of in situ complex coacervation, thus enhanced protection of core compounds with two-stage releasing kinetics and prevented hyperoxidation. Also, PDA-based colloids and substrates also exhibit controllable conformation characteristic, provide a promising prospect as versatile intermediate functional biomaterials for encapsulation.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Shaoqing Pan,Miao Cheng,Chen Ma,Huaijia Jing,Tongyu Shen,Jing Hu,Qianqian Liu,Tao Wei,Ruirui Wang,Wanfei Li,Bo Liu
With the unprecedented rise of flexible electronic technology, it is imperative to develop the matched flexible power supply systems. Magnesium ion battery (MIB), as a promising next-generation battery system, shows significant potential as a power source for flexible electronic devices. However, the research on flexible MIB remains in its infancy, and the exploration of novel and reliable flexible electrodes is crucial. Herein, a binder-free and flexible self-supporting electrode with bimetallic Bi–Sn nanoparticles anchored in carbon nanofiber (CNF@Bi-Sn) was fabricated via electrospinning method combined with subsequent calcinations, and applied to MIBs for the first time. The CNF@Bi-Sn simultaneously integrated the advantages of hierarchical porous carbon nanofiber framework, the homodisperse nanosized Bi-Sn particles, and the increased phase/grain boundaries, which were beneficial for improving the structural stability and facilitating Mg 2+ diffusion kinetics. The CNF@Bi-Sn alloy anode demonstrated impressive performance with high initial specific capacity of 738mAh/g, exceptional rate capability and outstanding cycling stability of 150mAh/g at 40 mA g −1 after 100 cycles. Significantly, the quantitative kinetic analysis, ex-situ SEM, TEM and XRD were conducted to reveal the structural evolution during cycling and the magnesium storage mechanism based on reversible two-phase alloying/de-alloying transformation reactions. Furthermore, the full batteries were assembled, demonstrating its potential for practical applications. This protocol sheds light on exploring high-performance flexible self-supporting alloy anode for future flexible power systems.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2017
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IF 2.843
Yuan Cao,Xiu-Li Wang,Wen-Qiang Zhang,Xue-Wu Yin,Yue-Quan Shi,Yu-Zhong Wang
A novel reactive phosphorus-containing flame retardant 1,4-phenylene-bis((6-oxido-6H-dibenz[c,e][1,2]-oxaphosphorinyl) methylene) diacrylate (TDCAA-DOPO), with two symmetrical 9,10-dihydro-9-oxa-10-phosphaphena-nthrene-10-oxide structure (bi-DOPO), was synthesized and combined with unsaturated polyester resin (UPR) via cross-linking to prepare flame-retardant UPR (FR-UPR). To make clear both the effects of the bi-DOPO structure and the cross-linking reaction on the thermal stability and flame retardancy of UPR, an additive flame retardant that also owned bi-DOPO structure but without a vinyl bond, 1,4-phenylene-bis((6-oxido-6H-dibenz[c,e][1,2]-oxaphosphorinyl) carbinol) (TDCA-DOPO), was used as a contrast. The results showed that the incorporation of TDCAA-DOPO or TDCA-DOPO into UPR can reduce its peak heat release rate (PHRR) and total heat release (THR), as well as improve the limiting oxygen index (LOI) value. As compared to TDCA-DOPO, the reactive TDCAA-DOPO endowed FR-UPR with enhanced thermal stability, residual char, and glass transition temperature (Tg), which were even higher than those of pure UPR. Besides, their flame-retardant mechanism for UPR had been well investigated.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Kai-hua Zhang,Ru-Yue Ding,Xin-Jie Zhao,Xiao-jing Wang,Yu-pei Li,Jun Zhao,Fa-tang Li
Sustained photocatalytic hydrogenation of CO 2 molecules is crucial for the CO 2 methanation reaction. Synchronizing directional photogenerated charge carriers and regulating the activation and hydrogenation process of CO 2 molecules are key to achieving the efficient photocatalytic methanation of CO 2 . Herein, Ag–Bi bimetallic sites were designed and anchored on the surface of TiO 2 via a one-step solution impregnation reduction and applied for the photocatalytic conversion of CO 2 to CH 4 . The optimum 5 %Ag 90 Bi 10 -TiO 2 composite exhibited excellent photocatalytic performance for the photoreduction of CO 2 into CH 4 . The product selectivity of CH 4 reached up to 97.2 %, at a rate of 58.9 μmol·g −1 ·h −1 . In situ Kelvin probe force microscopy and diffuse reflectance infrared Fourier transform spectroscopy attributed the high selectivity of CH 4 to the coexistence of metallic Ag and Bi sites, which induced directional photogenerated electrons and hole transfer. Moreover, the synergistic function of Ag–Bi bimetallic active sites on TiO 2 facilitated the hydrogenation of *CO 2 – to CH 4 . The proposed strategy provides insight into the design of highly selective photocatalysts for the reaction of photocatalytic methanation of CO 2 .
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高影响因子
危险品化学品经营许可证（带存储）