JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Jian Gao,Shu Wang,Yupu Liu,Denghui Yang,Xin Li,Fangzheng Yuan,Shuang Han,Wenlong Yang,Hui Zhang
It is of great significance and challenges to construct physical field-enhanced photocatalysts for energy and environmental applications. Herein, an artificial-photosynthesized CdS/PbTiO 3 S-scheme heterostructures with the enhancement of polarization electric field have been developed to promote the bifunctionally catalytic efficiencies for Cr(VI) photoreduction degradation of heavy metal pollution and Tetracycline (TC) photooxidation degradation of antibiotic. In our work, CdS nanoparticles are selectively grown on the positive polarization planes of PbTiO 3 microplates to form the same direction for both the ferroelectric polarization field of PbTiO 3 and the built-in electric field of S-scheme heterojunction. In this case, the stable heterostructures of PTO(00−1)/CdS(010) are obtained, and the greatly improved photocatalytic performances of redox degradation are achieved. The charge transfer mechanism and the synergetic effect between the spontaneous ferroelectric polarization and S-scheme heterojunction have been revealed by DFT calculations and experimental verifications. This interesting finding provides new insight into the design of efficient artificial-photosynthesized photocatalytic systems and we hope our work could serve as a valuable reference for our colleagues.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Tianci Huang,Yong Long,Bingqi Zhao,Qilin Hua,Zhong Lin Wang,Weiguo Hu
Aerogels, due to their unique interconnected 3D networks, and large number of air-filled pores, extend the structural characteristics and physicochemical properties of the nanoscale to the macro level. However, aerogels made from a single component can hardly meet the needs of multifunctional energy harvesting/supply situations. Here, a BaTiO3-based hybrid aerogel (BTO HA) with 3D network structure was prepared. When the BTO HA is used as the electrode of triboelectric nanogenerator (BTO HA-TENG), high electrical output performances were obtained, which is due to the synergistic effect of solid–solid contact electrifications between the two electrification layers, the gas–solid contact electrifications between the inner surface of BTO HA and the air filled in the aerogel pores, and the piezoelectricity of the doped BaTiO3 nanoparticles. The BTO HA-TENG exhibited excellent fatigue resistance and structural stability after 12,000 cycles of alternatively contact/separation tests, and it can not only provide stable power supply for commercial capacitors, drive small mobile electronic devices but also can be used as a self-powered sensor to monitor human motion signals. Compared with traditional TENGs depending on surface charge transfer, the BTO HA-TENG exhibited its unique advantage that it can generate and transfer triboelectric charges by 3D volume, which boost TENGs’ electrical output performances.
研究领域:
材料科学
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纳米技术
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能量收集
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传感器
✓ 已验证
DOI
PubMed
高影响因子
ChemElectroChem
·
2018
·Vol. 5
·期 13
·1702-1707
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IF 4.446
Jiaqi Wang,Junxiang Liu,Yichao Cai,Fangyi Cheng,Zhiqiang Niu,Jun Chen
Graphical Right off the batt : A Li@Super P composite anode with a high specific surface area is fabricated through a low-cost brushing method, which effectively decreases the interface impedance and overpotential of Li depositing/stripping. The anode can also mitigate the detrimental shuttling effect of I 3 − generated from LiI during the charging process. The combination of the protected Li anode and LiI mediator delivers superior Li−O 2 battery performance. Rechargeable Li−O 2 batteries represent a highly attractive battery technology, owing to a high theoretical energy density of 3500 Wh kg −1 , but they suffer from large charging polarization and lithium anode degradation on cycling. Herein, we report a Li−O 2 battery system with reduced polarization and a long lifespan, which is realized by using a novel Li@Super P composite anode integrated with lithium iodide in ether-based electrolyte. Coating a Super P carbon layer, with an optimal thickness of approximately 30 μm, onto the lithium anode results in a lowered interface impedance and a decreased Li depositing/stripping overpotential (<15 mV) over 300 cycles at 0.3 mA cm −2 . The Li−O 2 batteries assembled with the Li@Super P anode and LiI additive could mitigate the detrimental shuttling effect of I 3 − and deliver a high reversible capacity of 1000 mAh g −1 with a median charge voltage lower than 3.3 V after 50 cycles. This study provides a simple yet effective way to protect the lithium anode and design high-performance Li−O 2 batteries.
研究领域:
材料科学
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电化学
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电池技术
✓ 已验证
产品关联
DOI
高影响因子
iScience
·
2022
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IF 6.107
Can Zhang,Yuning Shi,Xueai Li,Hongjing Wu,Youfei Shen,Wanchun Guo,Kesong Tian,Haiyan Wang
Summary Constructing sophisticated 3D structure has been shown to be fruitful in developing carbon nanotubes (CNTs) microwave absorbers (MAs). However, issues with the unclear electromagnetic (EM) responding synergy of CNTs toward substrate and the limited dissipation property caused by the large dense CNTs networks throughout the reported models still need to be resolved. Inspired by the creeper-window-room-structured architecture, an analogous conformal nanostructure of amorphous carbon/CNTs (N-AC/CNTs) hybrid is constructed through an in situ autocatalytic planting approach. By this model, not only the inheritance of frequency dependence characteristic but the co-inheritance of lossy behavior and impedance matching is demonstrated. Moreover, by virtue of the unique structure, a synergistic reinforcing dielectric loss from conductive loss and dielectric polarization was introduced. Therefore, N-AC/CNTs-750 shows impressive EM performance. This work hereby unveils the synergy of EM response from CNTs toward substrate, and provides a pioneering insight into developing architecture-inspired structure engineering to construct high-performance MAs.
研究领域:
材料科学
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电磁学
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纳米技术
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2022
·Vol. 32
·期 39
·2206053
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IF 19.924
Zhi Zhang,Ziming Xiong,Yao Yao,Derong Wang,Zhiqian Yang,Pin Zhang,Qing Zhao,Wenke Zhou
Electronic devices have brought huge convenience to daily lives; however, a large amount of electromagnetic radiation pollution is generated. Therefore, an urgent demand for electromagnetic wave absorbing materials featuring “low thickness, wide frequency band and strong absorption” is put forward. Here, a strategy of introducing a conductive carbon nanotubes (CNTs) network into CH 3 NH 3 PbI 3 (MAPbI 3 ) is developed to construct an electromagnetic wave absorbing system. As the absorption center, MAPbI 3 dominates the absorption band via an electric polarization process. Meanwhile, the CNTs construct an efficient conductive network, which supply a transmission path for free electrons inside the MAPbI 3 crystals and enhance conduction loss. In comparison with the insulated network formed by MoO 3 /MAPbI 3 , it is speculated that the broadened absorption bandwidth and reduced absorption thickness originate from the conductive network of CNTs. As a result, when the CNTs is 7.7% (mass ratio), the reflection loss strength of MAPbI 3 /CNTs reaches −57.71 dB at 13.96 GHz and the corresponding effective absorption bandwidth is 6.32 GHz (11.68–18.00 GHz), with an absorber thickness of 1.96 mm. The method of constructing conductive network proves a great potential of hybrid perovskite in the field of electromagnetic wave absorption and provides feasible strategies for the absorption regulation of dielectric loss-type materials.
研究领域:
材料科学
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电磁学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
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IF 6.3
Haowen Dong,Mengnan Ruan,Chengyi Wang,Tingting Zhong,Miao Zhou,Zhifeng Liu
In 2 S 3 is a promising pyroelectric material and its internal polarization field strength has a significant effect on pyro-PEC catalytic performance. Therefore, effective strategies to enhance the polarization strength of the materials play a crucial role in improving the pyro-PEC performance. Here, sulfur vacancies were introduced by simple treatment of the material with vinylpyrrolidone (PVP) solution to study the effect of sulfur vacancy introduction on the thermoelectrocatalytic properties of In 2 S 3 and the mechanism of action is analyzed. It is shown that the current density of In 2 S 3 photoanode with introduction of sulfur vacancies in the hot and cold cycling field at 1.23 V vs.RHE reaches 1.07 mA∙cm -2 , which is 3.15 times higher than that of bare In 2 S 3 . After the introduction of light, the current density reached a maximum value of 2.29 mA∙cm -2 at 1.23 V vs.RHE. It is shown that the introduction of sulfur vacancies not only changes the distribution of dipole moments between In-S, but also increases the distribution of interfacial charges with enhanced polarization effects. Meanwhile, sulfur vacancies triggered an increase in In 2 S 3 surface defects, which promoted the surface polarization behavior and enhanced the response of the material to temperature changes. This study provides a new idea for coordinated catalysis with thermal-optical-electrical multiple external field coupling.
研究领域:
材料科学
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纳米技术
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催化
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固体物理
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能量转换
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·Vol. 36
·期 38
·2405233
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IF 27.4
Kai Zhang,Haozhe Li,Haoran Mu,Yun Li,Pu Wang,Yu Wang,Tongsheng Chen,Jian Yuan,Weiqiang Chen,Wenzhi Yu,Guangyu Zhang,Qiaoliang Bao,Shenghuang Lin
Light-induced ferroelectric polarization in 2D layered ferroelectric materials holds promise in photodetectors with multilevel current and reconfigurable capabilities. However, translating this potential into practical applications for high-density optoelectronic information storage remains challenging. In this work, an α-In 2 Se 3 /Te heterojunction design that demonstrates spatially resolved, multilevel, nonvolatile photoresponsivity is presented. Using photocurrent mapping, the spatially localized light-induced poling state (LIPS) is visualized in the junction region. This localized ferroelectric polarization induced by illumination enables the heterojunction to exhibit enhanced photoresponsivity. Unlike previous reports that observe multilevel polarization enhancement in electrical resistance, the device shows nonvolatile photoresponsivity enhancement under illumination. After polarization saturation, the photocurrent increases up to 1000 times, from 10 −12 to 10 −9 A under the irradiation of a 520 nm laser with a power of 1.69 nW, compared to the initial state in a self-driven mode. The photodetector exhibits high detectivity of 4.6×10 10 Jones, with a rise time of 27 µs and a fall time of 28 µs. Furthermore, the device's localized poling characteristics and multilevel photoresponse enable spatially multiplexed optical information storage. These results advance the understanding of LIPS in 2D ferroelectric materials, paving the way for optoelectronic information storage technologies.
研究领域:
材料科学
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光电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Hongbo Ji,Mingxuan Xiao,Sanyuan Wang,Lingchun Lu,Qingshan Lu
The combination of photocatalysts and ferroelectrics with spontaneous polarization can low the electron-hole pair complexation rate. In this work, barium titanate-based coaxial nanorod arrays including TiO 2 /Ba 1-x La x TiO 3 and TiO 2 /Ba 1-x La x TiO 3 /TiO 2 were rationally designed and prepared using TiO 2 nanorod arrays as both template and reactants using an in-situ reaction combined with sol-gel and dip-coating methods. The nanorod arrays exhibit an average length of 500 nm. A piezoelectric coefficient d 33 of 53 pm/V of TiO 2 /Ba 0.94 La 0.06 TiO 3 is achieved after doping La 3+ with the concentration of 6 %. The photocurrent density of the TiO 2 /Ba 0.94 La 0.06 TiO 3 /TiO 2 nanorod array is 8.7 and 1.6 times higher than those of the TiO 2 /TiO 2 and TiO 2 /BaTiO 3 /TiO 2 nanorod array, respectively. The photocurrent density of the TiO 2 /Ba 0.94 La 0.06 TiO 3 /TiO 2 nanorod arrays is expanded by a factor of 6.9 under positive polarization at 3 V. After ultrasonic poling, the photocurrent density of the TiO 2 /Ba 0.94 La 0.06 TiO 3 /TiO 2 nanorod array increases by a factor of 2.2. The boosted photoelectrochemical properties are attributed to the enhanced separation and migration of the photogenerated carriers under the improved ferroelectric polarization by ion doping and external field poling. This study provides a strategy to design novel ferroelectric-based photocatalysts with excellent photoelectrochemical properties.
研究领域:
材料科学
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纳米技术
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电化学
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铁电材料
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光催化
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Hao Deng,Yang Li,Ruihua Chen,Chao Ma,Junpeng Jiang,Daoyang Han,Bingbing Fan,Hailong Wang,Rui Zhang,Gang Shao
The coordinated metal single-atoms (MSA) can significantly enhance the electromagnetic wave (EMW) absorption properties of materials through adjusting local electron structure and polarization relaxation. The symmetric electronic environments for EMW absorption have been extensively studied, but the asymmetric electron dispersion from an atomic-scale perspective is blurring puzzle. In this work, the amorphous polymer-derived SiZnCN ceramics with porous “Cheese” structure were prepared by regulating Zn coordination and pyrolysis temperature. The SiZnCN (15 wt% ZnAc doping) ceramics pyrolyzed at 1400 °C exhibits an effective absorption bandwidth (EAB) of 4.96 GHz at an ultrathin thickness of 1.28 mm. This SiZnCN ceramics after oxidized at 500 °C still possesses excellent high-temperature EMW absorption performance. Benefiting from the porous structure and coordinated single Zn atoms, the asymmetric electronic environment in amorphous SiZnCN ceramics is established, promoting electron/dipole and interfacial polarization. This work proposes an effective strategy to optimize electromagnetic wave absorption for high temperature by coordinating asymmetric electronic environments in disordered structures.
研究领域:
材料科学
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电磁功能材料
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陶瓷工程
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纳米材料
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介电性能
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Jian Dai,Yucheng Zhu,Delong Dai,Wenfeng Yue,Zhenhao Fan,Fu Huang,Yuqun Deng,Atilla Evcin,Yangke Long,Dawei Wang,Yunfei Chang
Piezocatalysis promises sustainable water purification but remains constrained by ephemeral and nonselective radical pathways in complex aqueous environments. Herein, this study reports a defect-engineered BiFeO 3 piezocatalytic peroxymonosulfate activation system, which manifests efficient catalytic dynamics through dual nonradical oxidation pathways involving high-valent Fe(IV) = O species and piezo-induced holes. Experimental and theoretical analyses unveil a closed-loop Fe(II)/Fe(III)/Fe(IV) = O redox cycle sustained by the synergy of oxygen vacancy defects and piezoelectric polarization, enabling persistent nonradical oxidation. This system achieves over 99% bacterial inactivation within 30 min and unprecedented pollutant degradation rates (e.g., k = 0.174 min −1 for Sulfamethoxazole, 0.477 min −1 for Rhodamine B), outperforming state-of-the-art radical-based BiFeO 3 systems by 2−40 fold. The catalyst retains robust activity across broad pH ranges, anion-rich environments, and real water matrices. This work not only advances the mechanistic understanding of piezocatalysis beyond conventional radical pathways but also establishes a design framework for durable, efficient, and self-sustaining piezocatalytic systems for scalable water purification.
研究领域:
环境科学
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材料科学
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催化
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水处理
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纳米技术
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Peng Zhao,Haorong Sun,Feixue Gao,Long Yu,Kangle Shang,Ming Fang,Bin Ma,Xiaoli Tan,Suhua Wang,Xiangke Wang
Rapid and accurate detection of nitrite in the aqueous environment is extremely important for ecological safety and human health. In this paper, the Raman detection of nitrite by a NiFe 2 O 4 @Ag sensor in water is enhanced by an extra magnetic field collaborated with surface plasma. Most importantly, it is demonstrated that the magnetic field enhances the Raman peak intensity through not only the effect of magnetic aggregation but also the magnetic field-induced dielectric polarization effect. In this way, the NO 2 − can be detected in a wide linear range from 10 −8 to 10 −3 mol L −1 , and the limit of detection (LOD) can reach as low as 1.25 × 10 −9 mol L −1 , which is 5.69 times lower than that in the absence of an external magnetic field. Similarly, the sensitivity under the magnetic field is 2.65 times that without the magnetic field. In addition, the sensor also shows superior detection ability to NO 2 − in real samples. Given the excellent capability of the magnetic field-enhanced Raman spectra, the reported strategy offers new thoughts on how to enhance the detection ability by an external magnetic field and show the great application potential in real water bodies.
研究领域:
分析化学
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环境科学
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材料科学
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光谱学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Dawei Gao,Haixiang Wang,Jiajun Tang,Qiaoli Lu,Feifei You,Chao Ye,Lili Wang,Jian Qi
Conventional MoS 2 catalysts face challenges, including weak piezoelectric response, reliance on energy-intensive ultrasound, and limited active sites, reducing their efficiency in degrading organic pollutants. In this work, 1T/2H heterostructured MoS 2 nanoflowers were synthesized via an ionic liquid-assisted hydrothermal method, enabling efficient piezocatalytic activation of peroxymonosulfate (PMS) under mild mechanical stirring. The 1T/2H MoS 2 /PMS system rapidly degraded 95.9 % of Rhodamine B in 15 min, with a kinetic rate 4.43 times higher than conventional MoS 2 , and showed excellent cycling stability. This superior performance was due to enhanced piezoelectric polarization at heterointerfaces, which improved charge carrier separation, and the use of low-energy mechanical stirring instead of ultrasound for activation. Optimized interfacial charge transfer pathways also boosted the generation of superoxide anions (•O₂⁻) and singlet oxygen (¹O 2 ). Moreover, immobilizing 1T/2H MoS 2 on conductive carbon cloth enhanced recyclability and operational feasibility, offering a sustainable solution for water treatment technologies.
研究领域:
环境科学
·
材料科学
·
催化
·
纳米技术
·
水处理
✓ 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）