Journal of Cleaner Production
·
2024
·
IF 9.7
Chengling Huang,Youjie Gao,Yi Chen,Yunfei Shen,Hou-Yong Yu
Earth has become depleted of oil and has suffered from the misuse of non-biodegradable plastics. Significant efforts have been dedicated to addressing the application flaws of cellulose as a substitute for plastics derived from petroleum. One of key defects was non-hydrophobic nature which highly influenced the mechanical properties of cellulose material during practical uses. Here, an innovative method was proposed to achieve hydrophobic modification of cellulose films through the molecular dissociation of dodecyltrimethoxysilane (DTMS) without the use of any toxic agents during the cellulose regeneration process. The hydrophobic (water contact angle of 118°), transparent (transmittance of 85%), and high-strength (70 MPa) DC films (cellulose films modified by DTMS) were successfully fabricated via cellulose regeneration process tailored by DTMS after molecular dissociation. The DC films stood out in both hydrophobicity and strength compared with several commercial plastics and the possible hydrophobic mechanism was proposed. Furthermore, the obsession with smart sensing abilities in DC films has made it a potential tool for monitoring baby diapers. Therefore, unlike conventional concepts, the methodology we adopted is simple and efficient, and it also eliminates the need for cellulose and replaces it with plastics.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Haiyang Zhang,Hongyan Zhang,Zhenhong Jia,Chu Chen,Chen Yang,Qiaoya Dou,Xudong Li,Xiujuan Ma,Pengfei Ding
Organic-inorganic hybrid materials hold great application prospects in electronic devices such as humidity sensors due to their unique interfacial effects and synergistic interactions. However, relatively few studies have been conducted on the sensitization mechanism of organic–inorganic hybrid materials. Herein, we report a high performance humidity sensor based on an organic-inorganic hybrid material of poly(sodium 4-styrenesulfonate)-modified amino-functionalized SnO 2 (PSS-SnO 2 ). By employing the PSS surface modification strategy, the content of sulfonic groups (-SO 3 H) and oxygen vacancies on the surface of SnO 2 was significantly increased, which effectively enhanced its humidity sensing performance. The results reveal that the PSS-SnO 2 sensor has a higher response (18421.6), lower humidity hysteresis (1.8% RH) and faster response/recovery (2.8/5.7 s) compared to the SnO 2 sensor. Experimental analysis and density functional theory (DFT) results show that the presence of oxygen vacancies and -SO 3 H effectively promotes the dissociation of water molecules, resulting in more H + conduction on the surface of SnO 2 , which improves the sensitivity and response time of the sensor. Furthermore, the PSS-SnO 2 humidity sensor realizes visual monitoring of plant growth environments, which shows the potential in the field of smart agriculture.
研究领域:
材料科学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Storage Materials
·
2024
·
IF 18.9
Zhenyu Hu,Li Lin,Yi Jiang,Lianshan Sun,Wanqiang Liu,Qingshuang Wang,Fang Wang
In this work, we have discovered and investigated the reaction mechanism of Aqueous Hydrogen Proton Battery (AHPB), which differ from conventional rocking-chair batteries. The hydrogen protons in the battery reaction is provided by the dissociation of H 2 O molecules in the electrolyte. Thus, the charging and discharging processes of the battery are also accompanied by changes in electrolyte concentration. To explore this, we have designed a AHPBs with a 2 M Zn(ClO 4 ) 2 electrolyte. The experimental results demonstrate excellent performance of the AHPBs, with a discharge specific capacity of up to 700.6 mAh g −1 and a charge-discharge power conversion efficiency of 83.638 %. Both experimental and simulation results confirm that H + in the battery is primarily provided by H 2 O molecules solvating Zn 2+ . As the electrolyte concentration increases, ClO 4 − replaces some of the solvating H 2 O molecules of Zn 2+ , resulting in the remaining unsaturated solvating H 2 O molecules having a stronger propensity for deprotonation, thus facilitating the release of H + . This elucidates the specific source of H + in AHPBs.
研究领域:
电化学
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材料科学
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能源存储
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产品关联
DOI
高影响因子
Science Advances
·
2019
·Vol. 5
·期 8
·
IF 12.804
Yuequn Shang,Yuan Liao,Qi Wei,Ziyu Wang,Bo Xiang,Youqi Ke,Weimin Liu,Zhijun Ning
Organic-inorganic hybrid halide perovskites are emerging as promising materials for next-generation light-emitting diodes (LEDs). However, the poor stability of these materials has been the main obstacle challenging their application. Here, we performed first-principles calculations, revealing that the molecule dissociation energy of Dion-Jacobson (DJ) structure using 1,4-bis(aminomethyl)benzene molecules as bridging ligands is two times higher than the typical Ruddlesden-Popper (RP) structure based on phenylethylammonium ligands. Accordingly, LEDs based on the DJ structure show a half-lifetime over 100 hours, which is almost two orders of magnitude longer compared with those based on RP structural quasi–two-dimensional perovskite. To the best of our knowledge, this is the longest lifetime reported for all organic-inorganic hybrid perovskites operating at the current density, giving the highest external quantum efficiency (EQE) value. In situ tracking of the film composition in operation indicates that the DJ structure was maintained well after continuous operation under an electric field.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
ANALYTICAL CHEMISTRY
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2025
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IF 6.7
Qianxi Duan,Jingke Pan,Yunxiu Jia,Yizhuo Fu,Beibei Wang,Chao Lu
Understanding the disassembly process is significant for constructing well-defined and multifunctional supramolecular structures. Nowadays, fluorescent microscopy is used as a common technique to observe a real-time disassembly process. However, the addition of the fluorescent probes into nonfluorescent systems might influence the disassembly due to the weak supramolecular interactions. Therefore, it is urgent to explore a novel strategy to monitor supramolecular disassembly in the absence of fluorophores. In this work, we developed a simple and rapid strategy to understand the supramolecular disassembly process based on confined microenvironment-regulated electrochemiluminescence (ECL). It is disclosed that the addition of competitive guests could disassemble the supramolecular architectures and destroy the confined spaces, decreasing the ECL intensity as a result of the reduction of the chemical transformation efficiency of the coreactant. This developed nanoconfinement-tuned ECL strategy offers a simple method to monitor supramolecular disassembly in real time without the addition of any fluorescent dye. It is anticipated that the proposed strategy could be beneficial for a deep understanding of supramolecular disassembly, promoting the design and preparation of new-generation supramolecular assemblies with advanced functions.
研究领域:
超分子化学
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分析化学
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纳米技术
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电化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2025
·
IF 17.7
Hao Wu,Xian Jiang,Jingyu Lu,Yibo Li,Xinyan Li,Guidong Ju,Rengui Li,Jing Zhang
The hydrogen evolution reaction (HER) in alkaline water electrolysis faces significant kinetic and thermodynamic challenges that hinder its efficiency and scalability for sustainable hydrogen production. Herein, we employed an in-situ synthesis strategy to incorporate H atoms into the PdRu alloy lattice to form H Inc -PdRu electrocatalyst, thereby modulating its electronic structure and enhancing its alkaline HER performance. We demonstrate that the incorporation of H atoms significantly improves electrocatalytic activity, achieving a remarkably low overpotential of 25 mV at 10 mA cm –2 compared with the Pd, Ru and PdRu catalysts while maintaining robust catalyst stability. Operando spectroscopic analysis indicates that H insertion into the H Inc -PdRu electrocatalyst enhances the availability of H 2 O* at the surface, promoting water dissociation at the active sites. Theoretical calculations proposed that the co-incorporating H and Ru atoms induces s-d orbital coupling within the Pd lattices, effectively weakening hydrogen adsorption strength and optimizing the alkaline HER energetics. This work presents a facile approach for the rational design of bimetallic electrocatalysts for efficient and stable alkaline water electrolysis for renewable hydrogen production.
研究领域:
电催化
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氢能
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材料科学
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可再生能源
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物理化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）