CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Junhao Huang,Qingyong Tian,Huajian Feng,Chao Xue,Jun Li,Qun Xu
Construction of photocatalysts with efficient light-harvesting and charge separation properties for boosting photocatalytic hydrogen (H 2 ) evolution is still a challenge. Herein, a three-dimensional (3D) porous WS 2 @C@ZnIn 2 S 4 skeleton heterojunction is successfully synthesized by epitaxial growth of ZnIn 2 S 4 nanosheets on the WS 2 @C skeleton. The optimal WS 2 @C@ZnIn 2 S 4 photocatalyst exhibits considerable photocatalytic H 2 evolution rate (11.15 mmol·g −1 ·h −1 ) and CO 2 -to-CH 4 production performance (43.29 μmol·g −1 ), respectively. The high photocatalytic performance can be ascribed to the fact that multiple light reflection and scattering behaviors originated from 3D architecture facilitates to prolong the interaction length between photons and catalyst, which significantly enlarging the light-harvesting ability and utilization efficiency. Importantly, highly conductive WS 2 @C skeleton can drive photo-induced charge transportation from ZnIn 2 S 4 to WS 2 co-catalyst via the interfacial charge-transfer pathways. The DFT calculations further demonstrate the promotional effects of multiple diffuse reflection and separation of photo-generated carriers in photocatalytic H 2 evolution.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Matter
·
2022
·
IF 19.967
Hanliang Ding,Bo Li,Ze Wang,Shichao Niu,Zhiwu Han,Luquan Ren
Soaring developments in solar cells raise an urgent demand for superior antireflective (AR) materials to tackle the concern of their inadequate photovoltaic efficiency. Unfortunately, conventional AR films still suffer from a deficiency in omnidirectional antireflection and mechanical durability, significantly weakening their light-harvesting capability. Herein, a scalable biomimetic antireflective film (BARF) with ommateum-inspired multiscale hierarchical architecture was prepared using a method combining layer-by-layer thermal decomposition and in situ self-assembly. Remarkably, the BARF exhibited a transmittance of over 95% in light incident angles from −75° to 75°. Thereby, the output voltage of solar cells coated with BARF increased by 30.48% compared with commercial AR film. Furthermore, the BARF demonstrated excellent mechanical durability in falling-sand tests (∼2% transmittance loss). This work offers a general strategy for mass production of omnidirectional and durable AR films that are suitable for practical applications of protective AR film in solar cells, light pollution treatment, and video stealth technology.
研究领域:
材料科学
·
光学工程
·
能源技术
✓ 已验证
DOI
高影响因子
Nanoscale Advances
·
2018
·Vol. 1
·期 3
·1086-1095
·
IF 0
Dan Li,Guannan Wang,Yongjin Peng,Zhenhua Chen,Xianhui Gao,Liming Cheng,Xifan Mei
Herein, we developed a special strategy for the fast sensitization of red emitting copper nanoclusters with the assistance of green emitting copper nanoclusters. Compared to most previous methods based on AIE, which do not maintain the water solubility or tiny size of nanoclusters, the charming features of the copper nanoclusters were retained after the fabrication. Furthermore, the product was employed for the detection of sulphide, which revealed its ratiometric sensing ability in water since the ratio of the intensity change for green and red emission was related to the sulphide concentration. In addition, after the addition of Zn2+, the green and red emission was either enhanced or quenched via the corresponding mechanism. This enables the facile fabrication of promising white light-harvesting materials since the species of the emitting color can be simply tuned.
研究领域:
材料科学
·
分析化学
✓ 已验证
DOI
PubMed
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Xinxue Wu,Chaolong Fang,Wangdong Xu,Dawei Zhang
Natural compound eyes endow arthropods with wide-field high-performance light-harvesting capability that enables them to capture prey and avoid natural enemies in dim light. Inspired by natural compound eyes, a curved artificial-compound-eye (cACE) photodetector for diffused light harvesting is proposed and fabricated, and its light-harvesting capability is systematically investigated. The cACE photodetector is fabricated by introducing a cACE as a light-harvesting layer on the surface of a silicon-based photodetector, with the cACE being prepared via planar artificial-compound-eye (pACE) template deformation. The distinctive geometric morphology of the as-prepared cACE effectively reduces its surface reflection and the dependence of the projected area on the incident light direction, thereby significantly improving the light-harvesting ability and output photocurrent of the silicon-based photodetector. Furthermore, the performances of cACE, pACE, and bare polydimethylsiloxane (PDMS)-attached photodetectors as diffused light detectors are investigated under different luminances. The cACE-photodetector output photocurrent is 1.395 and 1.29 times those of the bare PDMS-attached and pACE photodetectors, respectively. Moreover, this photodetector has a desirable geometric shape. Thus, the proposed cACE photodetector will facilitate development of high-performance photodetectors for luminance sensing.
研究领域:
光学
·
生物仿生学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2020
·Vol. 9
·期 6
·1958-1965
·
IF 7.059
Zhixue Liu,Xiaohan Sun,Xianyin Dai,Jingjing Li,Peiyu Li,Yu Liu
Herein, we reported highly efficient light-harvesting amphiphilic supramolecular assemblies based on a tetraphenylethylene derivative (TPE-4Py), an amphiphilic sulfonatocalix[4]arene (SC4A-C6), and a sulfite fluorescent probe (SP). The obtained assemblies not only showed obvious signal amplification compared to SP alone, with an antenna effect of up to 28.1 based on highly efficient energy transfer of 75.2% from TPE-4Py/SC4A-C6 to SP, but also displayed an excellent ratiometric fluorescence signal output toward sulfites. Meanwhile, the assemblies showed no obvious cytotoxicity to A549 cells and could be used to sense sulfites in the cells. This strategy for constructing supramolecular assemblies not only resulted in a high-efficiency light-harvesting platform but also amplified the signal of the probe because of the high antenna effect and thus constitutes an effective method for fabricating fluorescent cell sensors.
研究领域:
生物化学
·
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
·
2021
·Vol. 23
·期 22
·8969-8978
·
IF 10.182
Neng Hu,Weijia Wang,Lin Lei,Huiqing Fan,Yeqiang Tan,Hua Yuan,Zhengwei Mao,Peter Müller-Buschbaum,Qi Zhong
A novel hydrogen evolution system based on hybrid nanogel films was successfully prepared with capabilities of spontaneous moisture collection and high light harvesting. Hybrid nanogels were synthesized by homogeneously dispersing graphitic carbon nitride with Pt atom (g-C3N4/Pt) loaded nanosheets into poly(di(ethyleneglycol) methylether methacrylate-co-poly(ethylene glycol) methylethermethacrylate) nanogels. Compared to pure g-C3N4/Pt nanosheets, aggregation and precipitation are prevented in the hybrid nanogels. Because of the large specific area of the hybrid nanogels (500 nm), spontaneous collection of moisture is realized when exposed to different relative humidities. Compared to bulk hydrogels, the moisture absorption capability of the hybrid nanogel films is dramatically increased especially at low relative humidity. Moreover, due to the multiple scattering of visible light and self-supply of water in the hybrid nanogels, the hydrogen evolution of the swollen hybrid nanogel film (thickness of 1 mm) significantly rises to 4994 μmol h−1 g−1 even in a non-aqueous environment (N2 atmosphere), which is almost three times (273%) that of pure g-C3N4/Pt powder in water. Thus, the obtained hybrid nanogel films can realize cyclic water collection and hydrogen production in a single system. No additional refilling of water is required for the present system.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2025
·
IF 7.2
Mengqi Yang,Yuchen Sun,Xiaonan Wang,Jia Wang,Yongwei Liu,Ailing Zhang,Jinglin Shen,Wei Qi
Light-harvesting is an indispensable process in photosynthesis, and researchers have been exploring various structural scaffolds to create artificial light-harvesting systems. Herein, a light-harvesting system (LHS) is constructed by AuNCs. First, ionic liquid 1-Dodecyl-3-methylammonium bromide (C 12 mimBr) and Ba 2+ are used to co-assembly with 6-aza-2-thiothymine (ATT) modified AuNCs to get ATT-AuNCs/C 12 mimBr/Ba 2+ (M-AuNCs) with network superstructures and improved emission efficiency. This makes M-AuNCs applicable for aqueous LHS. Furthermore, the green-emitting network serves as energy donors, and red-emitting positive dyes (rhodamine B) act as acceptors. An efficient energy transfer process occurs between them with an energy transfer efficiency of 94.1%. Significantly, sequential energy transfer can also be realized with the further addition of deep-red emitting dye (sulforhodamine 101). Notably, the system can only be constructed by M-AuNCs instead of mono-dispersed ATT-AuNCs. Based on this, a FRET-triggered logic gate is established, in which C 12 mimBr and Ba 2+ can be considered as energy switches to turn on/off the logic gate. Therefore, this work not only fabricates an AuNCs-based LHS through sequential energy transfer, but also develops a FRET-triggered logic gate, which has potential application in molecular recognition and information encryption.
研究领域:
生物化学
·
纳米生物学
·
分子科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Energy
·
2020
·
IF 5.604
J. Khan,N.U. Rahman,W.U. Khan,Y. Wang,S. Fu,G. Ahmed,M.N. Akhtar,M. Wu
In today's optoelectronic devices, particularly perovskite solar cells (PSCs), morphological engineering and microscopic architecture of metal oxide semiconducting materials are of great significance for enhanced charge collection, photonic structuring, and optical enhancement optimization. Herein, three-dimensional hollow TiO 2 sub-microspheres (3D-HTS) composed of anatase nanocrystals are synthesized using the hydrothermal method and used as a novel and efficient type of electron transport layer (ETL) for high-performance mesoscopic PSC. The TiO 2 sub–microsphere-based film features a 3D interconnected structure with tunable film thicknesses and pore sizes. The PSC based on such sub-microsphere films results in an outstanding power conversion efficiency (PCE) of 18.01% that is 28% greater than the TiO 2 nanoparticles (TNPs) ETL-based counterpart (PCE = 14.08%). The better efficiency of the sub–microsphere-made PSC device can be ascribed to the considerably improved charge collection, charge-transport, and light-harvesting capabilities. These valuable properties are because of the titania macropores that allow effective infiltration of the perovskite precursor for efficient light absorption, with reduced charge recombination and enhanced charge-transport through the sub-microspheres architecture. This work shows a practical and straightforward method for preparing 3D metal oxide–based electrodes for superior photovoltaic devices .
研究领域:
材料科学
·
能源工程
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 23
·4294
·
IF 5.719
Danwen Yao,Zhenyu Hu,Ruifeng Zheng,Jialun Li,Liying Wang,Xijia Yang,Wei Lü,Huailiang Xu
Quantum dot-sensitized solar cells (QDSSC) have been regarded as one of the most promising candidates for effective utilization of solar energy, but its power conversion efficiency (PCE) is still far from meeting expectations. One of the most important bottlenecks is the limited collection efficiency of photogenerated electrons in the photoanodes. Herein, we design QDSSCs with a dual-photoanode architecture, and assemble the dual photoanodes with black TiO2nanoparticles (NPs), which were processed by a femtosecond laser in the filamentation regime, and common CdS/CdSe QD sensitizers. A maximum PCE of 11.7% with a short circuit current density of 50.3 mA/cm2is unambiguously achieved. We reveal both experimentally and theoretically that the enhanced PCE is mainly attributed to the improved light harvesting of black TiO2due to the black TiO2shells formed on white TiO2NPs.
研究领域:
材料科学
·
能源技术
·
光物理
✓ 已验证
DOI
高影响因子
DYES AND PIGMENTS
·
2023
·
IF 4.5
Chao-Qun Ma,Ning Han,Ying Wang,Rong-Zhou Wang,Shengsheng Yu,Yue-Bo Wang,Ling-Bao Xing
In this work, an efficient artificial light-harvesting system with a two-step sequential energy transfer process was first constructed based on the polyelectrolyte material sodium carboxymethyl cellulose (CMC) and AIE molecule cyano-substituted amphiphilic hydroquinone derivative (PPTA) in an aqueous solution. The energy harvested by the two fluorescent dyes EY and SR101 from the supramolecular assembly PPTA-CMC was fully used for photochemical catalysis for the dehalogenation of α-bromoacetophenone, cross dehydrogenation coupling reaction (CDC), and alkylation of C–H bonds of phenyl vinyl sulfone (PVS) and tetrahydrofuran (THF) in the aqueous medium .
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Dandan Chen,Yanshuang Ba,Minyu Deng,Weidong Zhu,Wenming Chai,He Xi,Dazheng Chen,Jincheng Zhang,Chunfu Zhang,Yue Hao
Inorganic lead halide perovskite CsPbCl3 with an absorption edge of ∼420 nm and exceptional optoelectronic properties is promising for selective ultraviolet (UV)-harvesting visibly transparent photovoltaics. However, the low solubilities of CsCl and PbCl2 precursor materials in common solvents make it difficult to prepare high-quality CsPbCl3 films with the desired thickness. Herein, we demonstrate a water-assisted two-step spin coating growth strategy for CsPbCl3 films. Because of the high solubility of CsCl but the low solubility of PbCl2 in water, it becomes possible to produce CsPbCl3 films by direct spin coating of CsCl/H2O solution onto a PbCl2 film without damaging it. After optimizing the dose of CsCl/H2O solution, CsPbCl3 films with a full surface coverage, pure perovskite phase, high crystallinity, large average grain size of 620 nm, and thickness of ∼310 nm are obtained. Consequently, the selective UV-harvesting visibly transparent PSCs with the CsPbCl3 films yield an optimized efficiency of 1.19%, an average visible transparency of 53.1%, and a color rendering index of 91.1. The findings of our study make it clear that the water-assisted two-step spin coating growth strategy is highly feasible to prepare CsPbCl3 films with desired characters, and thus, it has a great potential in the future development of CsPbCl3 optoelectronic devices.
研究领域:
材料科学
·
光电材料
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2020
·
IF 6.785
Rongbin Nie,Jingwen Huang,Xuexue Xu,Li Yang
While chemiluminescent optical-fiber sensors present essential advantages for immunoassays of biomarkers, an inherent limitation hampering their detection sensitivity is the low collection efficiency of chemiluminescent emission induced by samples, owing to the microspatial scale of an optical fiber for transmission of light via total internal reflection. Here we present a robust approach to overcome this limitation, based on a uniquely designed all-optical chemiluminescent collection vial (CC vial) by using a concave mirror and a coaxial tubular mirror as its bottom and wall, respectively. Using cardiac troponin I (cTnI), a highly specific but low abundance cardiac biomarker, as the test sample, we show that accurate assays can be achieved in a wide linear range of 1–80000 pg/mL. The limit of detection is as low as 0.31 pg/mL, which is about 2 orders of magnitude lower than that obtained by a normal chemiluminescent optical fiber sensor. The method is successfully applied for determination of cTnI in real human serum samples with good accuracy and repeatability. Our study shows that the method can perform an all-directional collection of the chemiluminescent emission, thus, greatly enhancing the collection efficiency and improving the sensitivity of the immunoassays. It is also worth mentioning that the proposed strategy requires neither complex equipment nor additional chemicals, making it a cost-effective and universal approach for ultrasensitive detection of trace biomarkers.
研究领域:
生物医学工程
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）