ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Bo Yu,Zhiwei Xu,Hualin Liu,Yumeng Liu,Kanghua Ye,Zhiquan Ke,Jiankai Zhang,Huangzhong Yu
Despite the fact that perovskite solar cells (PSCs) are widely popular due to their superb power conversion efficiency (PCE), their further applications are still restricted by low stability and high-density defects. Especially, the weak binding and ion–electron properties of perovskite crystals make them susceptible to moisture attack under environmental stress. Herein, we report an overall sulfidation strategy via introduction of 1-pentanethiol (PT) into the perovskite film to inhibit bulk defects and stabilize Pb ions. It has been confirmed that the thiol groups in PT can stabilize uncoordinated Pb ions and passivate iodine vacancy defects by forming strong Pb–S bonds, thus reducing nonradiative recombination. Moreover, the favorable passivation process also optimizes the energy-level arrangement, induces better perovskite crystallization, and enhances the charge extraction in the full solar cells. Consequently, the PT-modified inverted device delivers a champion PCE of 22.46%, which is superior to that of the control device (20.21%). More importantly, the PT-modified device retains 91.5% of its initial PCE after storage in air for 1600 h and over 85% of its initial PCE after heating at 85 °C for 800 h. This work provides a new perspective to simultaneously improve the performance and stability of PSCs to satisfy their commercial applications.
研究领域:
材料科学
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能源科学
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DOI
PubMed
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 52
·30575-30580
·
IF 3.049
Yanhong Chao,Haitao Ju,Jing Luo,Yan Jin,Chao Wang,Jun Xiong,Peiwen Wu,Haiyan Ji,Wenshuai Zhu
Adsorptive desulfurization is an effective technology for removing harmful sulfur under mild conditions. Carbon materials have many advantages and are often used in adsorption desulfurization research, but until now have been synthesized using complicated methods and have shown limited adsorption capacity. Using an NaHCO3-assisted leavening method, waste tires were in the current work used as raw materials to produce hierarchically porous carbon that exhibits a high specific surface area and abundant oxygen-containing functional groups. In contrast to the sulfur removal by the carbon material prepared using a commonly used method, the as-prepared carbon material shows excellent adsorption performance, and was able to achieve an ultra-deep desulfurization of pentanethiol, specifically removing up to 99.7% of the sulfur from a model fuel with an initial sulfur concentration of 28 ppm. Therefore, we have provided a simple method for synthesizing adsorbents with high adsorption performance, and we expect these adsorbents to be used for industrial adsorptive desulfurization.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2025
·
IF 4.4
Jiahao Yang,Xiaomeng She,Song Zhang,Ruixuan Qin,Dongming Cheng,Jian Peng
The oxidation of copper significantly restricts its widespread industrial applications. Traditional methods, such as alloying and anti-corrosion coatings, often compromise copper's electrical and thermal conductivity. Molecular passivation technology has emerged as a promising solution, enhancing copper's anti-corrosion properties without degrading its intrinsic physical characteristics. However, the enhancement of copper's anti-corrosion properties through molecular passivation is far from satisfactory. Herein, allyl mercaptan is employed as a molecular passivation monomer to investigate its anti-corrosion performance. It is demonstrated that allyl mercaptan can coordinate and polymerize on copper surfaces under mild conditions, forming polymeric passivation layers. The modified copper foil (Cu-AM) exhibits a corrosion-inhibiting efficiency of 99.65%. Density functional theory (DFT) calculations indicate that the coordination of allyl mercaptan on various copper crystal planes is spontaneous, with the dissociation adsorption energy ranking as Cu(100) > Cu(110) > Cu(111). Anti-corrosion experiments on single-crystal copper foils further corroborate these findings, showing that Cu(100)-AM achieves the highest corrosion-inhibiting efficiency of 99.91%.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zhezhe Wang,Liqing Yang,Shaorui Yuan,Bo Yao,Shupeng Cen,Libing Tang,Yude Wang
HgTe colloidal quantum dots (CQDs) are promising for infrared detection due to their broad spectral response, high photosensitivity, and potential for low-cost fabrication. However, conventional synthesis methods struggle to achieve precise size control, narrow size distribution, high monodispersity, and tetrahedral morphology. In this work, we introduce diphenylphosphine (DPP) to enhance the reactivity of the telluride precursor, promoting uniform nucleation and allowing precise control over CQDs morphology, size, and monodispersity. A dual regulation strategy based on synthesis temperature and thiol ligand alkyl chain length is further employed to enable controllable growth of CQDs in both size and shape. The organic-inorganic heterojunction short-wave infrared photodetector constructed using HgTe CQDs layers obtained via this method and an organic hole transport layer of PEDOT:PSS exhibits a responsivity of 652 mA/W at 1650 nm and a detection rate of 7.88 × 10 11 Jones at room temperature. This work presents a novel, cost-effective, and scalable strategy for synthesizing HgTe CQDs, laying a solid foundation for the development and commercialization of high-performance infrared photodetectors.
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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红外探测
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半导体量子点
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DOI
高影响因子
JOURNAL OF MATERIALS CHEMISTRY
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2012
·Vol. 22
·期 35
·18564-18571
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IF 5.968
Deqin Fan,Chao Zhang,Junpo He,Rong Hua,Yang Zhang,Yuliang Yang
We report here redox reactions between graphene oxide (GO) and mercaptans, which reduces GO to reduced graphene oxide (RGO) and oxidizes mercaptans into disulfides. The reduction processes of GO using various mercaptans as the reducing agents are investigated through XPS, TGA, FT-IR, Raman and EA analysis. The degree of reduction of RGO depends on molecular structure of mercaptans and is controlled by the reaction time. The redox reaction is also employed to oxidize mercaptans into disulfides in medium to high yields under moderate conditions. The mechanism of the redox reaction may involve nucleophilic ring opening of oxirane on GO by alkylthio moiety, followed by addition of another alkylthio group, leaving the resulting disulfide. The reduction of the hydroxy group could be more complex, involving both radical and anionic processes.
研究领域:
化学
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材料科学
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2018
·
IF 11.698
Tingting Huang,Qingyi Peng,Wenjin Shi,Jundong Xu,Yu Fan
This article proposes a novel sodium dodecylbenzenesulfonate (SDBS)-assisted equilibrium adsorption method for preparing highly dispersed Ni/Al 2 O 3 and Fe-promoted NiFe/Al 2 O 3 thioetherification catalysts. The proposed strategy anchors nickel cations onto the electronegative surface of an Al 2 O 3 support modified by negatively charged DBS − bilayers. As a result, this method achieves highly dispersed Ni nanoparticles without strengthening the metal-support interaction, promoting the reducibility and sulfurization of the supported Ni species. The as-prepared Ni-based catalysts have a smaller size, a higher dispersion of metal nanoparticles, and a greater amount of active metal sulfides than their counterparts prepared by the conventional impregnation method, endowing them with excellent catalytic performance for the highly selective removal of mercaptans. This method provides a new opportunity to prepare highly dispersed metal nanoparticles without a strong metal-support interaction.
研究领域:
催化化学
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材料科学
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DOI
高影响因子
ACS Omega
·
2019
·
IF 2.584
Xiang Zhou,Fusheng Xu,Zhibing Wu,Hu Li,Song Yang
Sulfur-containing compounds are a class of important motifs extensively applied in pharmaceutical and pesticidal industries as well as in electrochemistry, toxicant separation, and organic syntheses. Herein, we describe a novel and efficient metal-free catalytic strategy for the rapid synthesis of β-thioketones from sustainable enone derivatives and thiols via thia-Michael addition enabled by heterogeneous prolinamide. At room temperature, up to 98% yield of β-thioketones could be obtained over the solid UiO-66-NH-proline catalyst facilely prepared by the covalent immobilization of proline onto UiO-66-NH2 (a well-known metal–organic framework) via a stable amido linkage. A cooperative effect of proline (amino group) and UiO-66-NH2 (in situ-derived amide species) was observed to play a promotional role in the proceeding of thia-Michael addition, resulting in a high TOF value of 1124.3 h–1. A three-component “iminium” intermediate was illustrated to the key species approaching the product β-thioketone. Moreover, the UiO-66-NH-proline could be easily recovered from the reaction mixture and recycled for at least five times with a slight loss of activity.
研究领域:
有机化学
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催化化学
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绿色化学
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药物化学
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DOI
PubMed
高影响因子
LANGMUIR
·
2018
·
IF 3.789
Jialun Chen,Panmiao Liu,Xin Du,Zhuoying Xie
Patterning colloidal photonic crystals have broad important applications in optical devices, functional coatings, full color displays, and colorimetric sensors. In this paper, a clickable colloidal photonic crystal using vinyl-modified sub-micrometer silica particles as building blocks was proposed to pattern photonic crystals. By click chemistry, different chemical groups were simply grafted to the clickable photonic crystals film and obtained wettability-encoded structure color patterns. The clickable photonic crystals provide a simple, controllable, and rapid path to pattern photonic crystals.
研究领域:
光学器件
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功能涂层
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全彩显示
·
比色传感器
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 141
·期 5
·e54876
·
IF 3
Xiaochun Liu,Jianyu Wu,Jianxin Wu,Zhiyi Huang,Wei Shen,Xingshan Yin,Yingjuan Sun,Xiaofeng Lin,Wenjing Lin,Guobin Yi
Based on the irresistible inherent trade-off between the mechanical and self-healing performances of cross-linked polyurethane materials, there is still an intractable challenge to design efficient self-healing and tough elastomers, especially in flexible sensors. Herein, a tough, efficient self-healing, and recyclable cross-linked polyurethane elastomer (DTPU) was prepared by integrating oxime-carbamate bonds and thiourethane bonds into the network. The extraordinary mechanical properties and self-healing performances of DTPU elastomers were related to the synergistic effect of oxime-carbamate bonds in the main chain and thiourethane bonds in the chemical cross-linked sites. The existence of dynamic cross-linked points not only optimized the mechanical properties of DTPU but also provided support for the reversible cleavage and formation of oxime carbamate bond, thus endowing DTPU with efficient self-healing performance and recyclability. After self-healing at mild temperatures for 6 h, the self-healed DTPU elastomers had a tensile strength of 30.27 MPa and a self-healing efficiency of 95.5%. After multiple hot-pressing, the original mechanical strength of DTPU was restored to over 100%, exhibiting excellent recyclable characteristics. Additionally, strain sensors based on self-healing flexible elastomers were fabricated by introducing conductive carbon nanotubes. The strain sensors maintained their electrical conductivity after 3 times self-healing, demonstrating great potential in healable flexible electronics.
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高影响因子
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