Small
·
2024
·
IF 13
Qi Wu,Xingang Liu,Yuanbo Liu,Chuhong Zhang,Min Nie
Polymer-based dielectric film capacitors are essential energy storage components in electronic and power systems due to their ultrahigh power density and ultra-fast charge storage/release capability. Nonetheless, their relatively low energy density does not fully meet the requirements of power electronics and pulsed power systems. Herein, a scalable composite dielectric film based on a ferroelectric polymer with edge hydroxylated boron nitride nanosheets (BNNS-OH) is fabricated via the construction of a hydrogen bonding network and stretching orientation strategy. The presence of hydroxyl groups on boron nitride aids in forming a robust hydrogen bonding network within the ferroelectric polymer, leading to a significant increase in Young's modulus and superior dielectric performance. Furthermore, the stretching process aligns the BNNS-OH and the hydrogen bonding network along the drawing direction via covalent and hydrogen bonding interaction, resulting in a remarkable tensile strength (109 MPa), breakdown strength (688 MV m −1 ), and energy density (28.2 J cm −3 ), outperforming mostrepresentative polymer-based dielectric films. In combining the advantages of a simple preparation process, extraordinary energy storage performance, and low-cost raw materials, this strategy is viable for large-scale production of polymer-based dielectric films with high mechanical and dielectric performance and opens a new path for the development of next-generation energy storage applications.
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Yingli Guo,Zhixiong Zheng,Bingyu Fu,Shengxin Wen,Yu Zhou,Xingping Zhang,Hualin Yang
Ochratoxin A (OTA) as a mycotoxin has strong carcinogenicity and can affect human health. Thus, it is necessary to establish an accurate method to detect OTA. Herein, a ratiometric absorbance and fluorescence dual model immunoassay based on ZIF-8@uranine (ZIF-8@UR) and p -nitrophenol (PNP) was developed. In this new immunoassay, alkaline phosphatase-labeled secondary antibodies (IgG-ALP) were used to associate OTA with signal output. The IgG-ALP can hydrolyze 4-nitrophenyl phosphate salt (PNPP) to generate yellow PNP and phosphate (Pi). Then, the Pi triggered the decomposition of ZIF-8@UR to release UR with a fluorescence signal. The absorbance ratio of PNP and UR was taken as a ratiometric absorbance signal. The ratiometric absorbance and fluorescence modes exhibited linear ranges of 0.781–50.0 ng/mL and 1.563–100.0 ng/mL, with limits of detection (LODs) of 0.112 ng/mL and 0.147 ng/mL, respectively. Meanwhile, the new immunoassay showed high specificity for OTA and satisfactory recovery rate in actual samples.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wenjing Xue,Dong Yan,Guoqiang Han,Wande Ding,Kefeng Zhang,Qianwen Zhang
The inherent hydrophobicity of polyvinylidene fluoride (PVDF) ultrafiltration (UF) membranes exacerbates fouling and limits separation efficiency. To address this, copolymerized poly(vinylidene fluoride- co -acrylic acid) (p(VDF-co-AA)) membranes were fabricated through tert-amyl peroxyneodecanoate (TBPP)-initiated in situ carboxyl group grafting. NMR and XPS verified carboxyl incorporation, while SEM and AFM revealed pore structure refinement (38.44 nm average pore diameter) and increased surface roughness (Ra: increased from 22.7 nm for PVDF membrane to 40.1 nm for p(VDF-co-AA 1.5wt% )). These structural enhancements elevated hydrophilicity, reducing water contact angle by 37.9 % (from 76.65 o ± 2.16 for PVDF membrane. decreased to 47.64 o ± 0.66 for p(VDF-co-AA 1.5wt% )) and tripling pure water permeance to 617 L·m −2 ·h −1 ·bar −1 . Molecular dynamics simulations revealed that synergistic hydrogen bonding and carboxyl polar interactions dominated hydrophilicity enhancement. The modified membranes demonstrated outstanding antifouling performance against humic acid (HA), bovine serum albumin (BSA), and sodium alginate (SA), achieving 28.0–38.8 % higher flux retention (J/J 0 ) and 16.7–50.1 % lower irreversible fouling. Notably, the incorporation of carboxyl groups facilitated stable separation performance under extreme alkaline conditions (pH = 14), retaining over 87.6 % of the initial flux and 69.10 % DOC rejection after a 3-day exposure period. This study provides a robust strategy for the development of high-performance UF membranes through molecular-scale hydrophilicity engineering.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Jinghao Zhu,Guiyang Yu,Hang Gao,Ruihong Sun,Ke Gong,Xiang Li,Debao Wang
Solar-driven upcycling of plastic waste to valuable chemicals provides an economic and low-energy technology to solve the accumulation of plastic waste and environmental pollution problems. However, simply relying on the capacity of single semiconductor system is still limited for high-efficient upcycling activity. Here, a low-cost plasmonic metal Bi-modified P-doped g-C 3 N 4 (Bi/PCN) is firstly reported to apply the conversion of waste plastics (including PE, PP, PVC, PEG, and PAM) under natural environment conditions without adding any cocatalysts or sacrificial agents. TAS and theoretical calculation reveal that the synergistic effect of Bi plasmonic excitation and doped P engineering not only improves light absorption ability, but also tunes interfacial Schottky barrier height (SBH) for the excellent charge separation and transport. The superposed amplification effect of Bi plasmonic excitation originates from hot electron injection, SPR scattering effect, and electromagnetic near-field enhancement. Optimized 1.0 %Bi/PCN composite achieves highly efficient upcycling of PE plastic to HCOOH product as liquid hydrogen storage medium with 1.88 % upcycling efficiency, which is the highest upcycling efficiency upon plasmonic photocatalysts as present. In situ EPR and IR spectra disclose plastics proceed multi-oxidative C C cleavage, where •O 2 and •OH radicals trigger plastic molecule and the intermediates of alkyl peroxide, alkyl radical, and alkoxy radical are successively formed. This work provides a preferable strategy for developing high-performance photocatalysts for upcycling of plastics waste through surface plasmon effect.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Bao-Hui Shao,Tong-Yu Li,Wen-Yi Sun,Ke Hu,Chun-Hao Chang,Xin-Yi Luo,Qing-Xin Meng,Wen-Hao Geng,Di Zhang,Hong-Zhang Geng
Recent industrial advancements have accelerated the development of thermoelectric devices for waste heat recovery and energy conversion. The fabrication of both n-type and p-type thermoelectric materials from the same substance has attracted broad research interest. In this study, p-type and n-type thermoelectric films were prepared using single-walled carbon nanotubes (SWCNTs) and Cu 2 O, with only minor differences in processing and composition. The two types of films exhibited distinct properties, which correlated with different crystal morphologies of Cu₂O: a rice-like microstructure in the p-type material and spherical microstructure in the n-type material. After p-type doping with Cu 2 O, the optimal Seebeck coefficient increased from 16 μV·K −1 to 41.2 μV·K −1 , while the electrical conductivity decreased from 67,891 S·m −1 to 2338.5 S·m −1 . The p-type SWCNT/Cu 2 O film achieved a maximum ZT value of 0.018, approximately 60 times higher than that of pure SWCNTs. For the n-type doped film, the Seebeck coefficient changed from 16 μV·K −1 to −17.6 μV·K −1 , and the electrical conductivity decreased to 27,828.5 S·m −1 , yielding a maximum ZT of 0.012—about 40 times higher than pure SWCNTs. A device consisting of six pairs of p-type and n-type films generated a voltage of up to 34.56 mV at a temperature difference of 100 K, demonstrating excellent thermoelectric performance. Both composite films also showed outstanding electrothermal properties: the p-type film reached 295 °C at 7 V with stable heating at 6 V, while the n-type film reached 335 °C at 6 V and exhibited good stability at 3.5 V. This work offers a simple and effective strategy for designing high-performance p-type and n-type thermoelectric materials from the same base system.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yutong Tong,Butian Chen,Chong Liu,Ruoyu Wang,Dewen Wang,Tianran Zhang,Xiaobai Ma,Limei Sun,Jinbo Yang,Wenyun Yang,Xiangfeng Liu
Halide solid electrolytes (SEs) show great potential in all-solid-state batteries (ASSBs) because of their high ionic conductivity and high oxidative stability. But the long-term cycling stability remains a major concern due to the cathode/halide interface side reactions, especially under high current density. Herein, a s-p-d orbital hybridization strategy is proposed via introducing Zr 4+ and F − into Li 3 InCl 6 (LIC-ZrF 4 ) to regulate the electron localization structure around the central In 3+ . The electron transfer between the cation and Cl is alleviated by the enlarged bandgap (4.485–4.894 eV) with ZrF 4 introduction, and more electrons aggregate around In 3+ after s-p-d hybridization among Zr, In, and Cl. This effectively prevents LIC-ZrF 4 from being attacked by O atoms in LiNi 0 . 8 Co 0 . 1 Mn 0 . 1 (NCM811) and significantly suppresses the interface side reactions. The in situ formed LiF-containing layer further enhances the interface stability. The assembled ASSB (NCM811/LIC-ZrF 4 /LPSC/Li-In) exhibits a state-of-the-art capacity retention (96.7%@500cycles@1C; 80.7%@1600 cycles@2C). Furthermore, the ionic conductivity of LIC-ZrF 4 is also enhanced from 0.6 to 1.5 mS cm −1 while the electronic conductivity is decreased from 3.66 × 10 −8 to 8.39 × 10 −9 S cm −1 . This work highlights the crucial role of s-p-d hybridization on the electron localization regulation and the interface stability, and presents some distinct insights into developing high-performance halides-based ASSBs.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Jinhuan Liang,Xiaoqi Wu,Jingwen Ma,Jin Huang,Jiaxin Wu,Rongrong Zhong,Zehua Zou,Yanjun Hou,Qingxiang Wang,Xuan Zheng
Constructing efficient and durable bifunctional electrocatalysts for overall water splitting (OWS) under industrial current densities remains a critical challenge. Herein, we report a crystalline–amorphous (C–A) Schottky junction catalyst, NiFe(OH)x/Fe7S8/IF, featuring a nanosphere-assembled hierarchical architecture synthesized via a two-step in situ growth strategy. The hybrid integration of conductive Fe7S8 nanorods and amorphous NiFe(OH)x nanosheets generates a robust C–A heterointerface. Mechanistic investigations reveal that the built-in electric field (BIEF) at the Schottky interface not only narrows the band gap of NiFe (oxy)hydroxide to improve charge transport, but also modulates the adsorption behavior of reaction intermediates by tuning the d/p-band center proximity (Δεd–p) of surface reaction sites. First-principles calculations demonstrate that Δεd–p serves as a reliable electronic descriptor for optimizing HER and OER pathways of NiFe (oxy)hydroxide-Fe7S8 heterointerface via balancing H adsorption and weakening OOH binding, respectively. Benefiting from these unique electronic regulations, the resulting catalyst exhibits exceptional bifunctional electrocatalytic performance, requiring overpotentials of only 359 mV for the hydrogen evolution reaction (HER) at 1 A cm–2 and 380 mV for the oxygen evolution reaction (OER) at 500 mA cm–2. When integrated into a two-electrode electrolyzer, the NiFe(OH)x/Fe7S8/IF couple achieves a low cell voltage of 1.42 V at 10 mA cm–2 and sustains 1 A cm–2 over 300 h with minimal current density decay. This work sheds light on a generalizable interfacial design strategy and introduces Δεd–p as a conceptual framework for the rational design of cost-effective, high-performance water-splitting electrocatalysts.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Hua Yu,Xuan Wang,Lijun Yang,Qirui Wu,Houming Shen,Geming Wang,Peng Fan
The development of high-performance separator materials has become crucial with the ever-increasing demands for enhanced safety and energy density of lithium-ion batteries in electric vehicles and large-scale energy storage systems. Here, a novel high-safety functionalized separator was prepared by synthesizing a composite material that encapsulates phosphorus‑nitrogen-containing ionic liquid (P/N-IL) within NH 2 -UIO-66-Zr metal-organic framework (MOF), and then combining this composite with a polyvinylidene fluoride (PVDF) P/N-IL@NH 2 -UIO-66/PVDF separator. This functionalized P/N-IL@NH 2 -UIO-66/PVDF separator significantly improves the flame-retardant performance of NCM811 batteries, effectively mitigating the risks of electrolyte combustion and explosion. Meanwhile, the porous structure of P/N-IL@NH 2 -UIO-66 material optimizes the Li + transport pathways, resulting in an increase in the ionic conductivity of NCM811 battery o 3.1 × 10 −4 S/cm (compared to only 3.4 × 10 −6 S/cm for the pure PVDF separator). The Li + transference number is also elevated to 0.68. Moreover, after 600 cycles at a 1C current density, the capacity retention rate reaches as high as 71 %, with an average coulombic efficiency of 96 %, substantially enhancing the electrochemical performance and cycling stability of the battery. This work offers a novel technological pathway for the development of high-safety, high-performance lithium-ion batteries, as well as for the application of ionic liquids and MOFs.
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高影响因子
Joule
·
2021
·
IF 41.248
Shaobing Xiong,Zhangyu Hou,Shijie Zou,Xiaoshuang Lu,Jianming Yang,Tianyu Hao,Zihao Zhou,Jianhua Xu,Yihan Zeng,Wei Xiao,Wei Dong,Danqin Li,Xiang Wang,Zhigao Hu,Lin Sun,Yuning Wu,Xianjie Liu,Liming Ding,Zhenrong Sun,Mats Fahlman,Qinye Bao
Perovskite solar cells (PSCs) suffer from significant nonradiative recombination, limiting their power conversion efficiencies. Here, for the first time, we directly observe a complete transformation of perovskite MAPbI 3 surface region energetics from p - to n- type during defect passivation caused by natural additive capsaicin, attributed to the spontaneous formation of a p-n homojunction in perovskite active layer. We demonstrate that the p-n homojunction locates at ∼100 nm below perovskite surface. The energetics transformation and defect passivation promote charge transport in bulk perovskite layer and at perovskite/PCBM interface, suppressing both defect-assisted recombination and interface carrier recombination. As a result, an efficiency of 21.88% and a fill factor of 83.81% with excellent device stability are achieved, both values are the highest records for polycrystalline MAPbI 3 based p-i-n PSCs reported to date. The proposed new concept of synergetic defect passivation and energetic modification via additive provides a huge potential for further improvement of PSC performance.
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高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2020
·
IF 7.864
Tian Tian,Ke Zhou,Yu-Sheng Li,Dong-Feng Liu,Han-Qing Yu
Phosphorus (P) recovery from wastewater can be completed by iron-involved autotrophic denitrification via forming Fe(III)–P precipitates and/or adsorbing P onto Fe(III) oxyhydroxides. However, so far, most studies focused on the final P-containing products, while the P-capturing pathways in such a process remain unclear. In this work, autotrophic iron-dependent denitrification (AIDD) was used as a typical anoxic iron-involved P-capturing biosystem to investigate the main P recovery pathways. The AIDD biosystem showed a relatively stable capability of capturing P coupled with nitrate reduction. Direct formation of amorphous Fe(II)–P precipitates after the phosphate was fed, followed by microbially driven oxidation into Fe(III)–P minerals, was found to be the primary pathway for the P capture. In addition, adsorption of phosphate onto the formed iron oxyhydroxides also contributed to the P recovery. This work provides better understanding about recovering P in AIDD and iron-involved denitrification and highlights the important roles of iron oxidizers in the iron-related biological wastewater treatment processes.
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高影响因子
RSC Advances
·
2018
·Vol. 8
·期 17
·9409-9413
·
IF 2.936
Xiaoyu Gu,Yang Li,Yanfei Mu,Min Zhang,Tongbu Lu,Peng Wang
Chemical doping is a viable tactic to improve the charge transporting properties of organic semiconductors in efficient perovskite solar cells. In this paper, we first employ the low-cost inorganic salt FeCl3 as a chemical dopant to replace the traditional expensive cobalt complex for the oxidization of 2,2′,7,7′-tetrakis(N,N-p-dimethoxyphenylamino)-9,9′-spirobifluorene (Spiro-OMeTAD), a typical organic hole-transporter. Based on the joint measurements of electron absorption spectra, cyclic voltammetry, and the hole-only device, we reveal that FeCl3 can effectively oxidize Spiro-OMeTAD and improve the hole transporting properties of Spiro-OMeTAD. Through carefully optimizing the dopant concentration, solar cells with 80% FeCl3 doped Spiro-OMeTAD achieve over 17% power conversion efficiency based on a triple cation perovskite photoactive layer, which is comparable to that of devices with a classical cobalt complex dopant. Our work demonstrates the potential of using FeCl3 as a low-cost chemical dopant for hole-transporting materials in perovskite solar cells.
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高影响因子
ACS Nano
·
2020
·
IF 14.588
Zhiming Zheng,Hong-Hui Wu,Haodong Liu,Qiaobao Zhang,Xin He,Sicen Yu,Victoria Petrova,Jun Feng,Robert Kostecki,Ping Liu,Dong-Liang Peng,Meilin Liu,Ming-Sheng Wang
Conversion-type transition-metal phosphide anode materials with high theoretical capacity usually suffer from low-rate capability and severe capacity decay, which are mainly caused by their inferior electronic conductivities and large volumetric variations together with the poor reversibility of discharge product (Li3P), impeding their practical applications. Herein, guided by density functional theory calculations, these obstacles are simultaneously mitigated by confining amorphous FeP nanoparticles into ultrathin 3D interconnected P-doped porous carbon nanosheets (denoted as FeP@CNs) via a facile approach, forming an intriguing 3D flake-CNs-like configuration. As an anode for lithium-ion batteries (LIBs), the resulting FeP@CNs electrode not only reaches a high reversible capacity (837 mA h g–1 after 300 cycles at 0.2 A g–1) and an exceptional rate capability (403 mA h g–1 at 16 A g–1) but also exhibits extraordinary durability (2500 cycles, 563 mA h g–1 at 4 A g–1, 98% capacity retention). By combining DFT calculations, in situ transmission electron microscopy, and a suite of ex situ microscopic and spectroscopic techniques, we show that the superior performances of FeP@CNs anode originate from its prominent structural and compositional merits, which render fast electron/ion-transport kinetics and abundant active sites (amorphous FeP nanoparticles and structural defects in P-doped CNs) for charge storage, promote the reversibility of conversion reactions, and buffer the volume variations while preventing pulverization/aggregation of FeP during cycling, thus enabling a high rate and highly durable lithium storage. Furthermore, a full cell composed of the prelithiated FeP@CNs anode and commercial LiFePO4 cathode exhibits impressive rate performance while maintaining superior cycling stability. This work fundamentally and experimentally presents a facile and effective structural engineering strategy for markedly improving the performance of conversion-type anodes for advanced LIBs.
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高影响因子
危险品化学品经营许可证（带存储）