ADVANCED MATERIALS
·
2026
·
IF 29.1
Ying-Hao Fu,Meng Li,Aniket Pal,Zi-Ting Wang,Tao Wang,Yu Wang,Wen Qiao,Xiaoshi Qian,Yan-Qing Lu
Self-sustained oscillations are fundamental to dynamic systems in nature, such as heartbeats, ocean waves, and firefly flashes. However, creating similar autonomous, out-of-equilibrium behaviors across diverse materials and structures in artificial settings remains challenging due to the lack of a universal, platform-independent control method. Here, we present an opto-magnetic feedback control strategy that achieves reliable self-excited oscillations through combined light, magnetic, and mechanical interactions based on a modular design approach. The dynamic, plug-and-play assembly of driving and deforming modules endows the platform with exceptional versatility in material type, structural setup, mechanical response, and functional use. Notably, this system can be tuned to produce continuous or intermittent self-oscillations, demonstrating its adaptability. We showcase the broad utility of the system by integrating optical modules for reconfigurable dynamic displays and wide-field-of-view light scanning, together with a thermo-mechano-electrical transduction module for high-efficiency energy harvesting. The proposed approach establishes a universal feedback pathway linking autonomous soft machines with various technological platforms, enabling on-demand adaptation across different application scenarios.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2026
·
IF 15.7
He Chengxuan,Yang Ruijie,Zhong Chenggui,Ye Zhicheng,Dong Yuan,Chen Weihao,Chen Lingyun,Wang Zhihan,Wu Shiqun,Zhang Jinlong
The simultaneous utilization of methane and carbon dioxide via dry reforming holds promise for sustainable syngas production, yet conventional thermocatalytic processes suffer from energy-intensive operation and catalyst deactivation. Here, we report a light-driven methane dry reforming strategy utilizing sinter-resistant nano-island alloys catalyst, which are dynamically evolved from partially oxidized NiIr nanoclusters anchored on TiO 2 under photoexcitation. In situ characterization reveals interfacial charge oscillations on the catalyst induce a support-Ni-Ir electron transfer pathway, stabilizing oxidized Ni linkages while electronically modulating surface Ir sites. This dual functionality promotes CH x O* intermediate formation, suppressing coking during 100-h operation under intermittent illumination. By decoupling photoelectric and photothermal contributions, we demonstrate that localized photogenerated electrons dominate balanced syngas production, whereas photothermal effects enhance molecular vibrations. The optimized catalyst achieves a syngas rate of 10841 mmol g cat -1 h -1 with 25.0% light-to-fuel efficiency, establishing a design paradigm for solar-driven alloy catalysts in greenhouse gas valorization.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Futures
·
2022
·Vol. 1
·期 1
·015301
·
IF 0
Danyang Li,Junjie Wang,Miaozi Li,Biao Guo,Lan Mu,Yu Luo,Yi Xiao,Chaohuang Mai,Jian Wang,Junbiao Peng
Perovskite quantum dots (PeQDs) are considered potential display materials due to their high color purity, high photoluminescence quantum yield (PLQY), low cost and easy film casting. In this work, a novel electroluminescence (EL) device consisting of the interface layer of long alkyl-based oleylammonium bromide (OAmBr), which passivates the surface defects of PeQDs and adjusts the carrier transport properties, was designed. The PLQY of the OAmBr/PeQD bilayer was significantly improved. A high-performance EL device with the structure of indium tin oxide/poly(3,4-ethylenedioxythiophene) polystyrene sulfonate/poly(bis(4-phenyl)(2,4,6-trimethylphenyl)amine)/OAmBr/PeQDs/2,2',2''-(1,3,5-benzinetriyl)-tris(1-phenyl-1H benzimidazole)/LiF/Al was constructed using a spin-coating method. A peak external quantum efficiency (EQE) of 16.5% at the emission wavelength of 646 nm was obtained. Furthermore, an efficient matrix EL device was fabricated using an inkjet printing method. A high-quality PeQD matrix film was obtained by introducing small amounts of polybutene into the PeQDs to improve the printing process. The EQE reached 9.6% for the matrix device with 120 pixels per inch and the same device structure as that of the spin-coating one.
研究领域:
材料科学
·
光电技术
✓ 已验证
DOI
Nanoscale
·
2020
·Vol. 12
·期 14
·7712-7719
·
IF 6.895
Yongsheng Zhu,Jun Zhao,Gang Yang,Xiumei Xu,Gencai Pan
Lead halide perovskite nanocrystals (PNCs) have very recently emerged as promising emitters for their superior optoelectronic properties. However, the defects in perovskite itself make it susceptible to the external environment and internal ion migration, resulting in low photoluminescence quantum yield (PLQY) and poor device efficiency. Herein, we developed a method to reduce the surface defects of PNCs by introducing ammonium acetate in the synthesis of CsPbI3 PNCs. The addition of ammonium acetate can effectively eliminate undesired surface metallic lead cations and dangling bonds, resulting in an enhanced PLQY and stability. The passivated PNCs have an overall up-shift energy level, demonstrating better hole injection efficiency. As a result, the red light-emitting diodes (LEDs) fabricated with the passivated CsPbI3 PNCs achieved an optimal EQE of 10.6% and a maximum brightness of 981 cd m−2, which are 3.1 and 2.4 times that of unpassivated PNCs based devices, respectively.
研究领域:
材料科学
·
光电技术
✓ 已验证
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 45
·28211-28222
·
IF 3.361
Congrong Lu,Shiwen Du,Yanfei Zhao,Qi Wang,Kuankuan Ren,Chunhe Li,Weidong Dou
The low separation efficiency of photogenerated charges and severe photocorrosion seriously impeded the application of CdS in photocatalytic water splitting. Here we report new routes to improve the photocatalytic performance of CdS nanowires (NWs) by decorating with Ag2S nanoparticles, so Ag2S/CdS heterojunction is constructed. The Ag2S/CdS heterojunction exhibited optimal photocatalytic H2 evolution rate of 777.3 μmol h−1 g−1, which is 12.1 times higher than that of pure CdS. The intrinsic characteristics of Ag2S/CdS nanocomposites, such as structure, optical properties, and surface chemical state are systematically studied by experimental characterizations and theoretical calculations. The comprehensive analysis demonstrates that the heterojunction between Ag2S and CdS accelerates photoinduced electrons transfer from CdS to Ag2S, enhancing their ability for water splitting. Meanwhile, the holes on the valence band of CdS react with the sacrificial agents, thus leading to the efficient separation of photogenerated electron–hole pairs. This work offers a simple route to synthesize one-dimensional CdS-based nanocomposites for efficient energy conversion driven by visible light.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
Polymers
·
2022
·Vol. 14
·期 24
·5536
·
IF 4.967
Xue Lei,Ailing Xie,Xinya Yuan,Xueni Hou,Jiaosheng Lu,Ping Liu,Zhonglin Xiang,Guoqiang Chen,Tieling Xing
Caffeic acid (CA) was treated on the surface of polyester fabric (PET), and Fe2+was used as an intermediate to form chelates with CA to increase the roughness of the polyester surface. With the addition of n-octadecyl mercaptan (SH), the mercapto group reacted with the carbon–carbon double bond of CA on the PET surface through enol click chemical reaction. Meanwhile, CA was polymerized under UV radiation, and thus CA-Fe-SH-PET was prepared. The introduction of SH with a long carbon chain reduced the surface energy of the PET, in order to endow the polyester fabric with a superhydrophobic/lipophilic function. Combined with XPS and FTIR tests, the new carbon–carbon double bond’s binding energy and vibration peak were found on the fabric surface, indicating that CA was adsorbed on the PET fabric’s surface. After adding SH, the double bond disappeared, demonstrating that SH and CA occurred a click chemical reaction and were grafted onto the PET fabric’s surface. The water contact angle (WCA) of CA-Fe-SH-PET was about 156 ± 0.6°, and the scrolling angle (SA) was about 3.298°. The results showed that the modified polyester had a robust superhydrophobic stability in washing, mechanical friction, sun aging, seawater immersion, organic reagent, and acid-base erosion derived from the good adhesion of polymerized CA (PCA). At the same time, the modified polyester fabric had good self-cleaning, antifouling, and oil–water separation performance. It was found that the CA-Fe-SH-PET fabric had unique photothermal conversion characteristics, which can convert the absorbed ultraviolet light into thermal energy, providing a local warming effect due to rapid heating and improving the transmission speed of heavy oil (engine oil and diesel). The CA-Fe-SH-PET fabric can further prevent the transmission of ultraviolet rays, and the UV resistance of CA-Fe-SH-PET fabric is far higher than the UV resistance standard. The preparation method is simple, fast, efficient, and environmentally friendly, and it has better a potential application value in the oil–water separation field.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2020
·
IF 5.778
Haiyan Yi,Renxuan Liu,Zaifei Chen,Bei Nie
Three-dimensional Ag(I)-fullerene hybrid microcrystal is fabricated by AgNO 3 assisted liquid-liquid interfacial precipitation, containing the abundant sp 2 -π-electron system. With a mild chemical reduction, it produces the massive Ag nanocluster/fullerene junctions, on which fullerene doubles role as the excellent electron acceptor and photon scavenger, enabling the Plasmon-driven catalytic reaction. Ag nanocluster employed alone could not perform this photocatalytic reaction, neither of fullerene (C 60 ) crystal. It implicates that Ag-fullerene interface is a key to drive catalytic process. Relative to conventional TiO 2 nanostructures, fullerene expands light absorption to most solar wavelength and possesses a tightened bandgap which intrinsically expedites the charge transfer and charge separation from coinage metals. Demonstrated by photodegradation of organic molecules, this Ag(I)-fullerene (C 60 ) composite, consisted of a plethora of electron donor-acceptor dyads renders an additional member to photocatalyst family, potentially implemented for photo-electron conversion, water remedy and beyond.
研究领域:
材料科学
·
环境科学
·
光催化
✓ 已验证
DOI
高影响因子
Nanoscale Research Letters
·
2018
·Vol. 13
·期 1
·1-7
·
IF 3.125
Xue Hun,Lin Xinyi,Chen Qinghua,Qian Qingrong,Lin Suying,Zhang Xiaoyan,Yang Da-Peng,Xiao Liren
The S-doped Sb 2 O 3 nanocrystals were successfully synthesized using SbCl 3 and thioacetamide (TAA) as precursors via a facile one-step hydrothermal method. The effects of pH of the precursor reaction solution on the product composition and property were determined. The results indicated that the doping amount of S could be tuned by adjusting the pH of the precursor solution. Furthermore, the S entered into the interstitial site of Sb 2 O 3 crystals as S 2− , which broadened the absorption wavelength range of the Sb 2 O 3 nanocrystal. The S-doped Sb 2 O 3 exhibited an excellent visible-light-driven photocatalytic activity in the decomposition of methyl orange and 4-phenylazophenol. Last, a possible photocatalytic mechanism of the S-doped Sb 2 O 3 under visible light irradiation was proposed.
研究领域:
材料科学
·
光催化
·
纳米技术
·
环境化学
✓ 已验证
DOI
高影响因子
Nano Select
·
2020
·Vol. 1
·期 3
·372-381
·
IF 0
Zhaojin Wang,Xiangtian Xiao,Jian Shen,Pai Liu,Dan Wu,Xiaobing Tang,Guanding Mei,Jiayun Sun,Hongcheng Yang,Xiang Li,Zhenghui Wu,Qifei Xie,Fan Fang,Shihao Ding,Wallace C.H. Choy,Xiao Wei Sun,Kai Wang
Boosting the efficiency and lifetime of all inorganic metal halide perovskite nanocrystals (PeNCs) based light-emitting diodes (PeLEDs) will promote the application of PeNCs in displays and lighting. However, achieving high-stability CsPbBr 3 NCs is still a critical challenge. In this study, a physical adsorption of polymethylmethacrylate (PMMA) on the surface of CsPbBr 3 NCs is proven effective to enhance CsPbBr 3 NCs stability by reducing the surface energy and preventing the attack of water and oxygen molecules. It also alleviates the energy transfer between neighboring NCs and greatly reduces the thin film roughness by suppressing the agglomeration of the CsPbBr 3 NCs within films. Specifically, compared with CsPbBr 3 NCs without PMMA adsorption, the photostability under the illumination of continuous ultraviolet light (96 hours) and storage stability under 0 °C (60 days) of the proposed CsPbBr 3 NCs with PMMA adsorption are therefore improved by >10 times and four times, respectively. Moreover, since the energy transfer between CsPbBr 3 NCs and the agglomeration of CsPbBr 3 NCs within films have been suppressed dramatically by the physical absorbed PMMA, the maximum luminance of as-fabricated LED devices is promoted from 5000 to 13,800 cd m −2 with alleviated roll-off effect. The operational lifetime of the LED devices is also improved by 5.7 times owing to PMMA preventing the attack of water and oxygen molecules.
研究领域:
光电子学
·
材料科学
·
纳米技术
·
发光二极管（LED）
·
钙钛矿材料
✓ 已验证
DOI
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2015
·
IF 7.435
Wanjun Wang,Xingqiu Chen,Gang Liu,Zhurui Shen,Dehua Xia,Po Keung Wong,Jimmy C. Yu
A new visible-light-driven photocatalyst , monoclinic dibismuth tetraoxide (m-Bi 2 O 4 ), has been discovered. This simple oxide with mixed valent states (Bi 3+ and Bi 5+ ) has a band gap energy of 2.0 eV, and is responsive to wavelength up to 620 nm. The first-principle calculations within the hybrid density functional framework (HSE) indicate that m-Bi 2 O 4 is a typical indirect-gap semiconductor. It shows much higher photocatalytic degradation activity as well as photostability than some of the well-investigated highly efficient photocatalysts, such as CdS and Bi 2 O 3 . Not only typical dyes and colorless aromatic compounds, including rhodamine B, methyl orange, methyl blue, phenol and 4-nitrophenol, but also bacterial ( Escherichia coli ) cells can be effectively degraded/inactivated in the presence of m-Bi 2 O 4 . The electronic potential of band structure is studied and a photocatalytic mechanism is also proposed, in which both OH and direct h + oxidation play important roles in the degradation process. Our discovery highlights the potential of developing Bi 2 O 4 -based photocatalysts as a new class of highly active, stable and safe photocatalyst for versatile pollutant degradation and disinfection under visible light .
研究领域:
材料科学
·
环境科学
·
光催化
·
半导体物理
·
污染治理
·
应用化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2017
·Vol. 29
·期 4
·2733-2742
·
IF 2.019
Hou Huilin,Wang Lin,Yang Weiyou,Gao Fengmei
Fe-doped TiO 2 nanofibers with a thoroughly mesoporous structure were prepared via a facile foaming-assisted electrospinning method. The foaming agents and FeAcAc were introduced in the raw materials to create the mesopores and incorporate the Fe dopants into the conventional solid TiO 2 nanofibers, respectively, which could be accomplished simultaneously over a one-step calcination process. The photocatalytic experimental results demonstrate that the mesoporous Fe-doped TiO 2 nanofibers exhibit significantly enhanced activity toward the RhB degradation and splitting water for hydrogen generation under visible-light illumination, as compared to those of Fe-doped solid and intrinsic thoroughly mesoporous counterparts. The photocatalytic mechanism is proposed that the one-dimensional mesoporous nanostructure can enhance the transportation of the reactant and products, and the Fe-doping induces the shift of the absorption edge into the visible-light range and restrains the recombination of photo-generated electrons and holes, which can synergistically improve their activity.
研究领域:
材料科学
·
纳米科技
·
光催化
·
环境功能材料
·
能源材料
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2013
·
IF 3.535
Qiang Geng,Zhoujun He,Xun Chen,Wenxin Dai,Xuxu Wang
The photo-responded behavior of ZnO and its sensing response to ethylene or acetone under visible-light irradiation at room temperature were reported. A ZnO sensor without any response to target gas in the air atmosphere in dark at room temperature, exhibits not only a photo response but also an obvious sensing response to target gas in the air atmosphere under visible-light irradiation. It is suggested that the non-intrinsic photo-absorption induced by the native defects of ZnO (i.e., the two-photon or multi-photon excitation process via the intraband) may be responsible for the photo-responded behavior to the visible light . Moreover, a mechanism model that accounts for the solid-state process of photo-carrier generation/recombination is proposed to explain the photo-induced gas sensing response of ZnO under visible-light irradiation. This indicates that the photo-activated gas sensing response property of semi-conductor can be also caused by its non-intrinsic photo-absorption.
研究领域:
材料科学
·
半导体物理
·
光电子学
·
传感器技术
·
表面化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）