Chemistry-An Asian Journal
·
2018
·Vol. 13
·期 4
·457-462
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IF 3.692
Yijie Zhou,Aibing Huang,Shidong Ji,Huaijuan Zhou,Ping Jin,Rong Li
Photochromic inks for repeatable light-printed media have attracted increasing attention owing to the fact that they may be widely applied to reduce the consumption of papers and plastics and conserve the environment. Therefore, it is of practical significance to develop convenient photochromic inks with a low cost and on a large scale. In this study, a simple one-step hydrothermal route was used to prepare tungsten trioxide (WO 3 ) nanoparticles, which were further used to make photochromic inks and transparent photochromic films. The obtained transparent photochromic film could rapidly respond to UV light within tens of seconds, then return to its initial state, with different recovery times at different temperatures, and also exhibit good reversible coloration–bleaching effect. A typical polyethylene terephthalate (PET) foil coated with the photochromic ink could also be repeatedly printed with various patterns and displayed excellent rewritable performance over tens of cycles. This study proposes a simple method for widespread applications of WO 3 -based photochromic inks.
研究领域:
材料科学
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纳米技术
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光学材料
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可持续技术
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智能涂层
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DOI
高影响因子
SUPERLATTICES AND MICROSTRUCTURES
·
2014
·
IF 1.979
Bingang Chen,Yongyong Deng,Hanxuan Tong,Jianhua Ma
In this study, a series of AgI/Bi 2 WO 6 heterojunction photocatalysts were synthesized with deposition–precipitation method. The photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive spectroscopy (EDS), UV–vis diffuse reflectance spectroscopy (DRS). The photocatalysts exhibited enhanced photocatalytic activity on the RhB dye degradation under visible-light irradiation. The 58.5% AgI/Bi 2 WO 6 sample was observed to have the highest photocatalytic degradation efficiency. Based on the calculated energy band positions, the mechanism of enhanced photocatalytic activity was discussed.
研究领域:
材料科学
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光催化
·
环境化学
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纳米材料
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半导体物理
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DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 53
·47427-47433
·
IF 3.289
Jinghua Liu,Xiaoqian Ge,Lining Sun,Ruoyan Wei,Jinliang Liu,Liyi Shi
A new kind of carbon dots with an average diameter of approximately 3–5 nm were synthesized using L-lysine. Subsequently, a series of lanthanide complex-functionalized carbon dots were designed and synthesized, denoted as Ln-CDs (Ln = Eu, Sm, Er, Yb, Nd). In addition, by changing the ratio of Eu complexes and carbon dots, four kinds of Eu complex-functionalized carbon dots were also obtained (Eu-CDs-1, Eu-CDs-2, Eu-CDs-3, Eu-CDs-4). The derived nanomaterials were characterized by Fourier-transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and fluorescence spectroscopy. Upon visible-light excitation, these lanthanide complex-functionalized carbon dots show multicolor visible (Eu; with red, orange, grey and blue colors, respectively) and near-infrared (Sm, Er, Nd, Yb) luminescence (emission covered from 400 nm to 1700 nm spectral region).
研究领域:
材料科学
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纳米技术
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光学材料
·
光物理
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DOI
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.
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产品关联
DOI
PubMed
高影响因子
CHEMICAL PHYSICS LETTERS
·
2016
·
IF 1.86
Min Lu,Xue Bai,Yijun Lin,Changyin Ji,Hua Wu,Cheng Ruan,Wenzhu Gao,Yiding Wang,Qiaoling Du
We here report a warm white light-emitting diode (WLED) by employing the red-emitting liquid layer of AgInS 2 /ZnS quantum dots (QDs) over the yellow-emitting YAG:Ce phosphor-based WLEDs. Compared to the commercial WLEDs, our liquid-type QD-WLEDs exhibit a color temperature of 3500 K and an improved color rendering index of 85. In addition, the experimental results indicate that the liquid structure warm white light device has a higher luminous efficiency of 72.1 lm/W and a better color stability against the extended working time in comparison to the solid-type QD-WLEDs.
研究领域:
光电子学
·
材料科学
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纳米技术
·
固态照明
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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
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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
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材料科学
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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
ADVANCED MATERIALS
·
2026
·
IF 29.1
Shuo Ding,Chang Gu,Zhuoyuan Kong,Zhiwei Yao,Hao Chen,Ting Zhang,Chaoyu Xiang
Metal halide perovskites have emerged as transformative candidates for next-generation optoelectronic materials, yet their performance remains constrained by an inherently rapid and uncontrolled crystallization process driven by pre-aggregated clusters in precursors. While cluster-related challenges have been partially explored in perovskite photovoltaics, systematic investigations into their mechanisms and practical solutions for perovskite light-emitting diodes (PeLEDs) remain scarce. Herein, we introduce a cluster-free intrinsic assembly strategy to fundamentally reshape the crystallization dynamics of perovskites. By exploiting the diuretic furosemide (FRSM) as an ionic binder, we achieve simultaneous coordination of all ionic components within the perovskite precursor, effectively suppressing cluster formation and redirecting crystallization toward a cluster-free intrinsic assembly pathway. The resulting perovskite films exhibit homogeneous high-quality perovskite nanocrystal structure, with exceptional optoelectronic properties and remarkable ambient stability. These advancements enable PeLEDs with a record external quantum efficiency (EQE) of 31.0% alongside unprecedented operational stability (equivalent T 50 >310 000 h at 100 cd m −2 , T 90 > 1000 h at 1000 cd m −2 ), establishing new performance benchmarks for PeLEDs. Our work establishes a paradigm linking precursor-state engineering to film-quality determinism, demonstrating that eliminating conventional cluster-dominated aggregation pathways can revolutionize the assembly process and unlock the potentials of perovskite optoelectronics.
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DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Liu Limei,Sun Taimin,Sun Yunyu,Feng Xuyang,Xue Enbo,Wang Binghao
Surface-enhanced Raman spectroscopy (SERS) provides ultrasensitive molecular fingerprinting, but conventional static SERS substrates are often limited by inefficient analyte capture and poor spatial controllability. Herein, we report a light-driven micromotor SERS detector based on silver-coated polystyrene microspheres (Ag@PS) for active, localized, and rapid biochemical sensing. The Ag@PS micromotors were fabricated through an electroless silver-plating strategy, forming a dense nanoparticle-like silver shell that provides abundant plasmonic hotspots for SERS enhancement. Under light irradiation, the micromotors exhibited reversible “on–off” locomotion, positive phototaxis, and pronounced light-induced clustering. The micromotors reached an average velocity of approximately 6 μm s⁻ 1 under 1.2 mW cm⁻ 2 irradiation and could be remotely guided toward target regions by moving the light spot. Benefiting from light-directed accumulation and intimate probe–analyte contact, the Ag@PS micromotor clusters enabled sensitive SERS detection of rhodamine 6G down to 10⁻⁸ M with good signal reproducibility. Furthermore, the platform achieved label-free in situ Raman detection of diverse microorganisms, including Paramecium , Spirogyra , Euglena , and Marimo , using handheld Raman systems. This work demonstrates a simple and programmable light-responsive micromotor SERS probe for active target enrichment and on-site biological analysis, offering a promising strategy for portable, real-time, and spatially controlled SERS detection. Graphical abstract
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Jiming Wang,Yinda He,Shuming Chen
Like other p-n junction devices, quantum dot light-emitting diodes (QLEDs) can only operate with direct current (DC), which is incompatible with household 220 V/50 Hz alternating current (AC), and accelerates device degradation due to constant charge injection and accumulation. Here, we develop a tandem QLED consisting of two QLEDs with opposite polarity that are connected in parallel. These QLEDs turn on alternately during positive and negative AC half-cycles, enabling them to operate directly under AC while maintaining high efficiency. More importantly, accumulated charges are effectively extracted under AC driving, and the T 95 lifetime at 10,000 cd m − 2 extends from 95 to 279 h. However, when powered by AC electricity, the tandem QLEDs exhibit an undesirable luminance flicker that is caused by the dark intervals occurring when the sinusoidal AC voltage is lower than the QLEDs' turn-on voltage. To address this issue, we develop a multi-phase driving scheme that uses phase-shifted AC signals to compensate for the dark intervals, and as a result, the percentage of flicker is effectively reduced from 100% to 13%. The developed device architecture and driving scheme result in high-efficiency, long-lifetime, low-flicker QLEDs that can be used as plug-and-play lighting sources compatible with household AC electricity.
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DOI
高影响因子
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