ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Lijun Yan,Di Li,Tingting Yan,Guorong Chen,Liyi Shi,Zhongxun An,Dengsong Zhang
Due to the wide application of carbon-based materials in supercapacitors, the concern of volumetric capacitance becomes increasingly important. In this work, the N,P,S-codoped hierarchically porous carbon spheres (N,P,S-HCS) have been rationally designed and originally fabricated using the silica colloids as hard templates, polyaniline as carbon and nitrogen sources, phytic acid as phosphorus sources, and ammonium persulfate as sulfur sources. Both high volumetric and gravimetric capacitance can be achieved. The as-prepared N,P,S-HCS shows the highest specific capacitance of 274 F g–1 and 219 F cm–3 at a current density of 0.5 A g–1, which reveals a superior performance. Moreover, the cycling ability of the N,P,S-HCS can be maintained over 95% to the initial capacitance at a high current density of 10 A g–1 for 10 000 charge–discharge cycles. This is mainly contributed to the uniform doping of N, P, and S as well as the hierarchically porous structure of the N,P,S-HCS. Finally, we assemble it into the all-solid-state symmetric supercapacitors with high energy and power densities of 3.4 W h L–1 with 804 W L–1, respectively. The N,P,S-codoped hierarchically porous carbon spheres with high density show both good volumetric and gravimetric capacitance, which make it a promising material for supercapacitors in practical applications. The present investigations may develop a new direction for the design of carbon materials for a good balance of both high gravimetric and volumetric capacitance.
研究领域:
材料科学
·
储能
·
电化学
·
纳米技术
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DOI
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 36
·13040-13046
·
IF 8.067
Yi Huang,Jin Tan,Gang Gao,Jianmei Xu,Ling Zhao,Wei Zhou,Qing Wang,Shuoguo Yuan,Jian Sun
Currently, ultraviolet photodetectors attract extensive attention from people all over the world due to their applications in solar ultraviolet radiation detection, flame detection, ozone monitoring, missile tracking, and environmental monitoring. A heterojunction is an essential aspect for fulfilling the demand for high-performance self-powered ultraviolet photodetectors. However, it is still very challenging to achieve both good electrical property and transparency for p-type semiconductors and conductors especially at low preparation temperature. This work reports the fabrication of ultrathin, ultra-high-transparency and very smooth CuI films at room temperature by the copper film iodination method, whose figure of merit (FoM) far exceeds those of most of the typical p-type oxides. The obtained p-type CuI films (p-CuI) were fabricated on an n-type Si (n-Si) substrate to construct a heterojunction photodetector. The p-CuI/n-Si photodetector has excellent optoelectronic properties in self-powered mode, including a large responsivity and detectivity (123.3 mA W−1, 5.7 × 1012 Jones), and a fast response speed (rise/decay time of 90 μs/140 μs), which are overall better than those of all types of CuI-based self-powered photodetectors. In addition, the CuI film deposited on the flexible substrate was applied in a CuI photodetector with a metal–semiconductor–metal structure, exhibiting good optoelectronic properties and bending stability, which shows promising applications in transparent, flexible, wearable electronic and optoelectronic devices.
研究领域:
光电子学
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材料科学
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半导体器件
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光电探测器
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柔性电子学
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DOI
高影响因子
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
·
2019
·Vol. 2019
·期 9
·1273-1278
·
IF 2.578
Wenqiang Chen,Qun Jing,Qiaoqiao Zhang,Ming-Hsien Lee,Xuefang Lu,Ping Wei,Zhaohui Chen
Introduction transition metal with d 10 electrons and lone pair cations with large radius into phosphate systems are helpful to get new crystal structure configuration. Guided by the above method, the first lead cadmium phosphate, Pb 2 Cd 3 (PO 4 ) 2 (P 2 O 7 ), was synthesized. Pb 2 Cd 3 (PO 4 ) 2 (P 2 O 7 ) features a three-dimensional (3D) structure, in which Pb(1) 2 O 8 dimer and Pb(2)O 5 polyhedra are filled between the two-dimensional (2D) layers, which are composed of unique [Cd 6 P 8 O 30 ] groups. In the Pb II M II PO (M II = without or divalent metal ions) systems, the title compound is the first phosphate containing two different P–O groups simultaneously. The ratios of cation/phosphorus (C/P) and polymerization modes of P–O anions have a close relationship by many structural comparisons. Thermal analysis shows that Pb 2 Cd 3 (PO 4 ) 2 (P 2 O 7 ) melts congruently and is thermally stable. In addition, the UV/Vis-IR diffuse reflectance spectrum and infrared (IR) spectrum have been reported. The relationship between electronic structure and optical properties was clarified by first-principles studies. Graphical The crystal structure of a new cadmium-based compound Pb 2 Cd 3 (PO 4 ) 2 (P 2 O 7 ), containing two kinds of P–O groups, exhibits unique [Cd 6 P 8 O 30 ] ∞ layers.
研究领域:
无机化学
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材料科学
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晶体工程
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固态化学
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光学材料
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热分析
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DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2026
·
IF 7.7
Li Wu,Mingshan Song,Lifang Wen,Sisi Wei,Zhenqi Xin,Pengzhi Qi,Xiaojun Yan,Yongjiu Xu,Baoying Guo,Weifeng Wang
Benzotriazole ultraviolet stabilizers (BUVs) are widespread and bioaccumulative aquatic contaminants. However, their immunotoxicity and underlying molecular mechanisms remain largely unexplored. In this study, we measured the concentrations of ten BUVs in the East China Sea and selected UV-P for further study based on its highest detected concentration. Consequently, marine medaka ( Oryzias melastigma ) were exposed to an environmentally relevant concentration (3.5 μg/L) and two elevated concentrations (35 and 350 μg/L) of UV-P for 28 days. Immunological parameters, histopathological alterations, and transcriptomic profiles were examined at the end of exposure. Additionally, bacterial challenge tests using Pseudomonas fluorescens were performed to assess host resistance. The results revealed an initial increase in the levels of alkaline phosphatase, immunoglobulin M, C-reactive protein, and complement component 3, followed by a significant decrease with increasing UV-P concentration. Histopathological damage was observed in immune tissues, including the liver, intestine, kidney, and gills. Transcriptomic analysis indicated significant enrichment of differentially expressed genes in multiple immune-related pathways following UV-P exposure. The key pathways affected mainly included cytochrome P450-mediated metabolism and the complement and coagulation cascades. The 24-h post-infection assessment revealed dose-dependent increases in bacterial loads and mortality rates in UV-P-exposed fish. Collectively, these findings demonstrate that UV-P induces immunotoxicity and increases the risk of bacterial infection in marine medaka. This study highlights the potential ecological threats posed by BUVs and offers valuable insights into the immunotoxic mechanisms of these contaminants.
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产品关联
DOI
PubMed
高影响因子
Materials Horizons
·
2017
·Vol. 4
·期 2
·274-280
·
IF 10.706
Ke Zhang,Mingzeng Peng,Wei Wu,Junmeng Guo,Guoyun Gao,Yudong Liu,Jinzong Kou,Rongmei Wen,Ying Lei,Aifang Yu,Yang Zhang,Junyi Zhai,Zhong Lin Wang
Flexible functional devices based on two dimensional (2D) materials are extremely suitable for malleable, portable and sustainable applications, such as health monitoring, electronic skin and optoelectronics. In this work, we developed a flexible photodetector based on a p-CuO/n-MoS2 heterojunction with an enhancement in photocurrent and detection sensitivity. Because of the non-centrosymmetric structure in monolayer MoS2, the piezo-potential induced by applied strain adjusts the band structure at the heterojunction interface and broadens the depletion region based on the piezo-phototronic effect. The border depletion can be discreetly used to improve the photo-generated carrier separation and transport to enhance photoresponse performance. When illuminated by a 532 nm laser, the photocurrent of the heterojunction can be enhanced 27 times under a tensile strain of 0.65% compared to strain free conditions and the detection sensitivity can reach up to 3.27 × 108 Jones. As a result, our research provides a new strategy for novel design and performance optimization of 2D material heterostructures in the application of optoelectronics.
研究领域:
材料科学
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纳米科技
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光电子学
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凝聚态物理
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功能器件
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DOI
高影响因子
Advanced Energy Materials
·
2017
·Vol. 8
·期 7
·1702267
·
IF 16.721
Shanshan Yao,Jiang Cui,Jiaqiang Huang,Jian-Qiu Huang,Woon Gie Chong,Lei Qin,Yiu-Wing Mai,Jang-Kyo Kim
This paper reports the rational assembly of novel hollow porous carbon nanospheres (HPCNSs) as the hosts of phosphorous (P) active materials for high-performance sodium-ion batteries (SIBs). The vaporization-condensation process is employed to synthesize P/C composites, which is elucidated by both theories and experiments to achieve optimized designs. The combined molecular dynamics simulations and density functional theory calculations indicate that the morphologies of polymeric P 4 and the P loading in the P/C composites depend mainly on the pore size and surface condition of carbon supports. Micropores of 1–2 nm in diameter and oxygenated functional groups attached on carbon surface are essential for achieving high P loading and excellent structural stability. In light of these findings, HPCNS/amorphous red phosphorus composites with enhanced structural/functional features are synthesized, which present an extremely low volume expansion of ≈67.3% during cycles, much smaller than the commercial red P's theoretical value of ≈300%. The composite anodes deliver an exceptional sodium storage capacity and remarkable long-life cyclic stability with capacity retention over 76% after 1000 cycles. This work signifies the importance of rational design of electrode materials based on accurate theoretical predictions and sheds light on future development of cost-effective P/C composite anodes for commercially viable SIBs.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
电池技术
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DOI
高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 5.2
Yu Huang,Xiao Li,Guoping Zhu,Zhennan Wang,Pooya Jafari,Xiaoning Song,Jiabing Feng,Zongmin Zhu,Siqi Huo,Pingan Song
Despite great advances, it remains a grand challenge to design a fire retardant for the creation of transparent fire-retardant epoxy resin (EP). To address this issue, a phosphorus/nitrogen/sulfur-containing ionic flame retardant, TD, composed of a diphenylphosphinate unit and a 2-thiophenethylammonium unit, was synthesized and incorporated into EP. The EP composite containing only 3 wt % TD (0.25 wt % phosphorus) achieved a vertical burning (UL-94) V-0 rating, and the limiting oxygen index (LOI) increased to 24.7%. Cone calorimetry results showed that, relative to neat EP, the EP/5TD composite achieved notable reductions in heat and smoke generation. Its peak heat release rate (pHRR) and total heat release (THR) decreased by 44.0% and 24.0%, while the peak yields of carbon monoxide (pCOP) and carbon dioxide (pCO2P) decreased by 23.5% and 58.6%. Notably, TD not only significantly enhanced fire safety and mechanical properties of EP but also effectively maintained thermal properties and optical transparency. The flame-retardant efficacy of TD was ascribed to the combined action of P, N, and S, which enabled multiple mechanisms, including condensed-phase char barrier formation, gas-phase dilution/cooling, and radical scavenging effects. This work develops highly effective multielement flame retardants for preparing fire-safe epoxy resins with superior comprehensive performances.
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Hanjie Si,Jun Ma
Phosphorus-doped α-manganese dioxide cathode material was successfully synthesized. • P-α-MnO 2 possesses excellent electrochemical performance. • P doping can enhance structural stability of the α-MnO 2 phase. MnO 2 is recognized as a highly competitive cathode candidate for aqueous zinc-ion batteries (AZIBs) thanks to its low fabrication cost and considerable reversible capacity. However, MnO 2 suffers from severe manganese dissolution and structural phase transitions during cycling, leading to crystalline phase instability and thus severely limiting further performance enhancement of AZIBs. Herein, we successfully construct Phosphorus‑incorporated α‑MnO 2 (P-α-MnO 2 ) via an ion doping strategy and evaluate its electrochemical performance in AZIBs. PMO-2 delivers a peak capacity of 440.7 mAh g −1 at 0.1 A g −1 after 20 cycles and sustains 89% capacity (192–170.8 mAh g −1 ) upon 1500 cycles at 1.5 A g −1 , exhibiting better retention compared with pristine α-MnO 2 that maintains merely 49.6% (159–78.9 mAh g −1 ). Combined structural characterizations and DFT calculations indicate that the boosted performance of P-α-MnO 2 stems from phosphorus doping strengthening the crystalline stability of α-MnO 2 . It can substantially cut down Zn 2+ adsorption energy as well as ion‑migration barriers, which alleviates lattice‑channel destruction caused by Zn 2+ insertion‑extraction and preserves the tunnel‑type crystal framework of α‑MnO 2 throughout charge‑discharge operations. This work provides important theoretical foundations and design strategies for the further development of low-cost, high-stability, and high-energy-density manganese-based cathode materials. Download: Download high-res image (148KB) Download: Download full-size image
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·Vol. 143
·期 40
·e71304
·
IF 3.1
Kang Jiaoyue,Chao Yan,Yan Kou,Lin Zhou,Tao Liu,Mao Chen
Epoxy resin (EP) is one of the most widely used thermosetting materials; however, its high inherent flammability severely restricts its practical applications. To address this issue, a novel nitrogen/phosphorus (N/P)-containing hexafunctional monomer (HCPB) was synthesized and employed to partially substitute diglycidyl ether of bisphenol A (DGEBA) in the preparation of flame-retardant epoxy thermosets (EP/HCPB), using polyetheramine (D230) as the curing agent. The effects of HCPB content on the thermal stability, mechanical strength, and flame retardancy of EP were systematically investigated. Specifically, the EP-HCPB 15 composite with 15.00 mol% HCPB achieved a tensile strength of 48.87 MPa, a limiting oxygen index (LOI) of 30.5%, a UL-94 V-0 classification, and a glass transition temperature ( T g ) of 58.11°C. Furthermore, the flame-retardant mechanism of HCPB in the epoxy matrix was systematically elucidated, involving both gas-phase free-radical quenching and condensed-phase charring effects. This work provides a facile and effective strategy for the design and preparation of high-performance flame-retardant epoxy thermosets.
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产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Chiyuan Chen,Ziqi Zhao,Feng Liu,Hongyu Yang,Xiaming Feng,Chaojun Wan
This study addresses the flammability issue of the biodegradable polyester polylactic acid (PLA) by proposing a supramolecular flame-retardant strategy. Leveraging the critical regulatory role of aromatic topology on molecular assembly and flame-retardant performance, two supramolecular flame retardants, HEMPD and HEDAN, were synthesized through hydrogen-bonding networks utilizing hydroxyethylidene diphosphonic acid (HEDP) with m-phenylenediamine (MPD) and 1,5-diaminonaphthalene (DAN), respectively. Comparative studies within PLA composites were conducted to systematically investigate the quantitative influence of aromatic structure on gas-phase/condensed-phase flame-retardant mechanisms and thermal stability. HEMPD and HEDAN achieved a UL-94 V-0 rating at additive loadings of 4 and 2 wt %, respectively. At a 4 wt % loading, both significantly enhanced the limiting oxygen index (LOI) of PLA from 19% to 24% (HEMPD) and 24.5% (HEDAN), while reducing the peak heat release rate (PHRR) by 14.94% and 11.98%, respectively. Consequently, the flame retardancy and thermal stability of PLA were markedly improved. This work provides the first mechanistic insight into the structure–property relationship between aromatic topology and the efficacy of supramolecular flame retardants, paving the way for achieving high-efficiency flame retardancy in biobased materials.
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产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 23
·8142-8154
·
IF 4
You-Hui Zhao,Hai-Yan Li,David James Young,Xiangqian Cao,Da-Liang Zhu,Zhi-Gang Ren,Hong-Xi Li
Earth-abundant copper(I) coordination complexes of an imine-phosphine and a diimine have been developed as visible-light photocatalysts. Reaction of [Cu(MeCN)4]BF4 with hetero-bidentate phosphinopyrazole (phpz) ligand R1R2C3HN2PPh3 (R1 = R2 = H (1a); R1 = H, R2 = Me (1b); R1 = H, R2 = Ph (1c); R1 = R2 = Me (1d)) and 2,9-dimethyl-1,10-phenanthroline (dmp) gave four heteroleptic bis-chelate Cu(I) complexes [Cu(dmp)(R1R2C3HN2PPh3)]BF4 (R1 = R2 = H (2a); R1 = H, R2 = Me (2b); R1 = H, R2 = Ph (2c); R1 = R2 = Me (2d)) with distorted tetrahedral geometries. Complexes 2a–2d exhibited broad absorption in the visible spectrum and could facilitate photochemical intermolecular atom-transfer radical addition reactions of CBr4, or CCl3Br, CHI3 to styrenes in yields up to 91% and with a broad substrate scope. The absorption, emission, redox potential and photocatalytic activity were dependent on the substituents on the phpz ligand. Mechanistic studies supported an atom-transfer radical addition (ATRA) mechanism.
研究领域:
无机化学
·
光化学
·
催化
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DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 71
·41383-41391
·
IF 3.049
Lei Cai,Zhaohui Zhang,Haimei Xiao,Shan Chen,Jinli Fu
An eco-friendly fluorescent molecularly imprinted polymer anchored on the surface of graphene quantum dots (GQDs@MIP) was developed with an efficient sol–gel polymerization for highly sensitive and selective determination of p-nitroaniline (p-NA). The GQDs@MIP was characterized in detail by Fourier-transform infrared, fluorescence spectrometer, scanning electron microscope, transmission electron microscope and ultraviolet spectrophotometer. The results showed that the imprinted layer was successfully grafted on the surface of the GQDs. The fluorescence of the GQDs@MIP is efficiently quenched when p-NA recombines with the imprinting sites based on the photo-induced electron transfer fluorescence quenching mechanism. A good linear relationship was obtained between the fluorescence quenching efficiency of the GQDs@MIP and the concentration of p-NA in the range of 0–15.0 μM with a correlation coefficient of 0.99. The practicability of the proposed method in real samples was successfully evaluated through monitoring p-NA in water and fish samples with satisfactory recovery. The developed method provides a feasible and eco-friendly strategy to fabricate MIPs anchored on GQDs with good fluorescence properties for sensitive detection of organic pollutants in complex samples.
研究领域:
分析化学
·
环境科学
·
材料科学
·
传感器技术
·
污染物检测
·
纳米材料
·
食品安全
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DOI
高影响因子
危险品化学品经营许可证（带存储）