Sustainable Materials and Technologies
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2025
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IF 9.2
Dong Wang,Hongyu Zhang,Ping Yang,Xiao Zhang
A novel approach is developed to construct Z -scheme heterojunctions via growing SnO 2 nanoparticles on Pt decorated hollow TiO 2 bowl nanoarrays (TBN) towards efficient photogenerated charge carrier separation and transfer to enhance the redox ability of resulting catalysts. Namely, sample TBN was fabricated using hollow carbon spheres as templates, in which highly crystalline TiO 2 nanoparticles (less than 10 nm) were assembled into nanoarray to construct hollow bowl spheres. Homogeneously distributed small Pt nanoparticles in TBN govern the growth of SnO 2 nanoparticles via a solvent thermal route and finally to create Z -scheme TiO 2 /Pt/SnO 2 heterojunctions. Pt loading between SnO 2 and TBN components improved photogenerated charge carrier separation and transfer efficiencies and enhanced photocatalytic performance. TiO 2 /Pt/SnO 2 heterostructure samples exhibited improved performance for tetracycline hydrochloride removal with a pseudo-first-order kinetic reaction constant of k = 0.080 min −1 which were 3.8 and 6.7 times of those of TBN (k = 0.012 min −1 ) and TBN/SnO 2 composites (sample TS, k = 0.021 min −1 ), respectively. Moreover, the photocatalytic hydrogen generation rate of TiO 2 /Pt/SnO 2 heterostructures without using co-catalyst was 3511.9 μmol·g −1 ·h −1 which was 2.3 times of that of sample TS using Pt as co-catalyst. These results provided new sights for synthesis of photocatalysts especially for the removal of antibiotic pollutants.
研究领域:
环境科学
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材料科学
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光催化
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Mengxin Liu,Chen Lin,Haowei Li,Jiejun Pan,Yuhui Liu,Xin Su,Xinan Shi,Heng Zhang,Bingsuo Zou,Daocheng Pan
SnO 2 nanoparticles (NPs) have emerged as a promising electron transport material (ETL) for high-performance and stable quantum dot light-emitting diodes (QLEDs). However, their inherently high electron mobility and conductivity create a charge transport imbalance in QLEDs, ultimately limiting device performance. To address this challenge, a novel p-type doping strategy is proposed to continuously decrease the electron mobility and conductivity of SnO 2 NPs. As a result, the electron mobility and conductivity of Zn-doped SnO 2 NPs can be adjusted in a wide range owing to the substitution of Zn 2+ ions for Sn 4+ ions as the electron acceptors. The charge transportation balance in QLEDs can be realized by suppressing the electron transportation ability of Zn-doped SnO 2 nanocrystals and inserting a wide-band-gap CaMoO 4 interface layer. Finally, QLED devices achieve an average external quantum efficiency (EQE) of 24.4% and a highest EQE of 27.1%, which are comparable to the state-of-the-art ZnO-based QLEDs. More importantly, the positive aging effect can be eliminated by using Zn-doped SnO 2 NPs as ETL, which provides a promising ETL material for the fabrication of high-efficiency and stable QLEDs without positive aging effect.
研究领域:
材料科学
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纳米技术
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光电子学
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半导体器件
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 11
·1-19
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IF 2.8
Wang Lu,Zhou Ying-Hua,Liu Xiaoheng
Carbon fibers’ textile (CFT)-based flexible electrodes containing a large number of SnO 2 nanospheres and V 2 O 5 /SnO 2 nanoparticles were obtained by a facile one-pot template method. The homogeneously distributed SnO 2 and V 2 O 5 /SnO 2 exhibit an optimized worm-like mesoporous skeleton and an ideal pore size distribution with a highest surface area of around 295.5 m 2 ·g −1 and 198.0 m 2 ·g −1 , respectively. Using the mesoporous transition/mixed transition metal oxide nanomaterials simultaneously as both positive and negative electrodes, a solid-state flexible asymmetric supercapacitor was fabricated with the V 2 O 5 /SnO 2 @CFT as the positive electrode and SnO 2 @CFT as the negative electrode with well-widened voltage windows. Benefiting from the 3D controllable mesoporous architecture of electroactive species, the assembled supercapacitors delivered a high specific capacitance of 151.3 F·g −1 at 1 A·g −1 , and good rate stability with 70.9% capacitance retention at a higher current density of 5 A·g −1 . Notably, the device can operate in a wide voltage window (0~1.6 V), which enhance substantially the energy density to 193.6 Wh·kg −1 at a power density of 2880 W·kg −1 . These encouraging results are expected to open up a possibility of designing and fabricating the other metal oxide nanomaterials with mesoporous structure and uniform morphology for high-performance supercapacitors and other energy storage devices application.
研究领域:
材料科学
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纳米技术
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能源存储
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电化学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
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IF 2.7
Jiaxin Gao,Mengxin Liu,Xinan Shi,Daocheng Pan
A high-quality electron transport layer (ETL) has an extremely profound impact on the performance of quantum dot light-emitting diodes (QD-LEDs). To date, ZnO nanoparticle thin films have been usually adopted as ETLs in high-performance QD-LEDs. However, because ZnO is an amphoteric oxide, ZnO nanoparticles are chemically unstable in air, and the quantum-sized SnO2 nanoparticles have great potential to resolve the stability issue of the ZnO nanoparticle ETL. In this work, we develop a ligand-assisted solvothermal precipitation method to prepare quantum-sized SnO2 nanoparticles. Short-chain butyric acid and butylamine are used as the binary ligands, and ethanol is used as the solvent. Under solvothermal conditions, hydrophobic SnO2 nanoparticles capped by butyric acid and butylamine will aggregate and form a white precipitate in ethanol. The SnO2 nanoparticles with a particle size of 3.6 nm exhibit an optical band gap of 4.23 eV. Based on the quantum size effect, the conduction band minimum position of the quantum-sized SnO2 nanoparticles is upshifted to −3.72 eV, which makes them suitable for use in QD-LEDs as the ETL, so that the electrons can be readily injected into the quantum dot emitting layer. As a result, QD-LEDs based on the quantum-sized SnO2 nanoparticles exhibit a maximum external quantum efficiency of 12.9%, revealing that the quantum-sized SnO2 nanoparticles have great potential for application in QD-LEDs as the ETL.
研究领域:
材料科学
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纳米技术
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光电子学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2020
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IF 3.557
Xinting Han,Junyan Peng,Shaohua Jiang,Jian Xiong,Yu Song,Xiao Gong
Good mechanical and chemical stabilities are the key factors for the wide application of superhydrophobic surfaces. In this work, we first prepared raspberry-like hollow structured SnO2 nanoparticles using a simple hydrothermal method, followed by an annealing step. Then, the intrinsic raspberry-like hollow SnO2 nanoparticles were combined with hydrophilic SiO2 nanoparticles to construct rough surfaces with suitable hierarchical structures, and 1H,1H,2H,2H-perfluorodecyltriethoxysilane (FAS-17) was used as a hydrophobic modifier of SnO2, while epoxy resin was used as an adhesive to prepare a superamphiphobic coating with good stability and durability. Such a coating can be applied on various substrates using a simple spray-coating or drop-coating method. The water contact angle and diiodomethane contact angle of the coating could reach up to ∼165 and ∼151°, respectively. After various chemical and mechanical stability tests including hot water treatment, salt water corrosion, strong adhesive tape peeling, and kneading, the coatings still remained amphiphobic. The facile fabrication of the robust superhydrophobic coating has great potential for applications in real life and industrial production.
研究领域:
材料科学
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表面化学
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纳米技术
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涂层与薄膜
✓ 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）