ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Handong Jiao,Mengjun Liu,Zhe Wang,Manpeng Lin,Zhaoliang Qu,Jianxun Song,Shuqiang Jiao
Molten salt electrorefining is expected to be a powerful technology for upcycling titanium scrap because of its robust ability of removing impurities. However, realizing the stable operation of electrorefining, for example, the current efficiency of the anode and the cathode is still a key challenge from the viewpoint of industrial applications. Here, we study titanium’s anodic dissolution and cathodic deposition processes via a direct three-dimensional visualization method based on a computed tomography technology under high-temperature operational conditions. Real-time quantitative results show that the current efficiency is obviously affected by the concentration of titanium ions in the melt. Visual analysis of the local dissolution rate and the curvature of the titanium anode at different electrolysis stages reveals the kinetic origin of the concentration-induced current efficiency changes, which arise from the priority of the side reactions being dependent on the concentration of titanium ions. Finally, we show that employing the high concentration and single existence forms of titanium ions is an effective strategy to prevent the side reactions and improve the current efficiency. This work provides a fresh and fundamental understanding of the side reactions occurring at the interface of electrodes and is significant for facilitating the stability of electrorefining engineering of titanium.
研究领域:
材料科学
·
冶金工程
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产品关联
DOI
高影响因子
Nano Research
·
2024
·
IF 9.5
He Jinhua,Wang Chenhui,Liu Mingrui,Ramzan Muhammad,Long Zhiwei,Wu Xian-gang,Chen Yu,Zhong Haizheng
The potential use of large-size ZnSe quantum dots as blue emitters for display applications has greatly inspired the colloidal synthesis. Herein, we report the negative effects of side reactions of large-size ZnSe quantum dots. The side reactions between oleic acid and oleylamine generated amidation products and H 2 O, which led to the hydrolysis of Zn(OA) 2 to Zn(OH) 2 and the subsequent formation of zinc oxide (ZnO) and zinc bis[diphenylphosphinate] (Zn(DPPA) 2 ) precipitates. These side reactions resulted in the formation of a defective surface including a Se-rich surface and oxygen-related defects. Such negative effects can be overcome by adopting an etching strategy using potassium fluoride and myristic acid in combination. By overcoating a ZnS shell, blue emissive ZnSe/ZnS quantum dots with a maximum photoluminescence quantum yield of up to 91% were obtained. We further fabricated ZnSe quantum dots-based blue light-emitting diodes with an emission peak at 456 nm. The device showed a turn-on voltage of 2.7 V with a maximum external quantum efficiency of 4.2% and a maximum luminance of 1223 cd·m −2 .
研究领域:
材料科学
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纳米技术
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Yinghui Liu,Xiaoxuan Zhang,Jingrui Rong,De Li,Shujun Lv,Xuejiao Sun
Aqueous zinc ion batteries (AZIBs) are garnering attention as a promising energy storage technology, boasting high energy density, low cost and high safety. Nevertheless, Zn dendrite growth and side reaction seriously affect the AZIBs cycle stability. In this paper, the interlayer separator design strategy is innovatively proposed, and a titanium dioxide fiber membrane (TiO 2 /CNF) with three-dimensional network structure is fabricated using the electrostatic spinning technique, which is used as an interlayer with filter paper to form a new type separator. The TiO 2 /CNF interlayer can suppress the side reaction and promote the uniform Zn deposition. As a result, the Zn||Zn symmetric cell with a current density of 2 mA cm −2 can maintain stable cycling for 650 h. Excitingly, the Zn||CVO full cell equipped with the TiO 2 /CNF interlayer separator achieves remarkably improved, and shows long-term stability of 200 cycles with 1.0 A g −1 current density.
研究领域:
材料科学
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电化学
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能源存储技术
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产品关联
DOI
高影响因子
Advanced Intelligent Systems
·
2020
·Vol. 2
·期 4
·1900191
·
IF 0
Xinlong Pang,Haoran Zhao,Shaohua Ma
A multicomponent reaction is established toward quinazolimine derivatives, but it requires intensive human interventions in conventional reaction systems to suppress the side reactions. Herein, an automated microfluidics-based reaction system that uses a program to command the fluid conductance to perform a cascade of reactions and separation in a defined sequence is innovated. The system is composed of chained reaction modules. Within the individual reaction module, side reactions are suppressed by creating an extremely high concentration bias between the reagents via selective reagent diffusion through the porous channel wall. The reaction sequence is commanded by transporting reagents from one module to the following ones, obtaining quinazolimine derivatives with high yield and purity. The system is low cost, easy to compose, program commanded, and requires minimal human intervention once the reaction modules are assembled and reagents are loaded.
研究领域:
化学工程
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药物合成
✓ 已验证
DOI
RSC Advances
·
2020
·Vol. 10
·期 58
·35381-35388
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IF 3.119
Chenyang Wei,Zhengping Liu,Hongwei Tan,Liyan Huang,Jun Li
A biodegradable linear bio-based polyester of poly(hexylene succinate) was effectively prepared in non-metal sulfonic acid-functionalized Brønsted acidic ionic liquids (SFBAILs) as both the catalyst and the polymerization medium, and the processes of polycondensation and post-polycondensation in SFBAILs were also investigated. In addition, the side reactions which were detrimental to the growth of Mw of poly(hexylene succinate) were evaluated and the synthesis mechanism of poly(hexylene succinate) catalyzed by SFBAILs was discussed with the help of DFT calculations. The result shows that both the imidazole ring and the sulfonic group on cations of SFBAILs play an important role in the catalytic process.
研究领域:
材料科学
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化学工程
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生物化工
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产品关联
DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2025
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IF 9.2
Quan Yan,Bai-Liang Xue,Xiaojie Xie,Wenliang Wang,Xin-Ping Li,Xiaojun Shen,Xianzhi Meng,Wei Zhao
The valorization of lignin into high-performance polymeric materials remains a significant challenge, primarily due to the inherent complexity of conventional synthetic methodologies and the non-reprocessable nature of derived polymers. In this study, we present a convenient one-pot strategy to access fully bio-based lignin-integrated polymers endowed with reprocessability. This approach leverages the side reaction, free radical termination, during the synthesis of star-shaped lignin graft copolymers via radical polymerization, enabling the initial formation of a primary permanent network and concurrently enhance monomer utilization (95.6% conversion vs. 62.1% in conventional star polymer). Subsequently, carboxylic acid-terminated poly(lactic acid) oligomers are employed as green cross-linking agents to establish a secondary adaptive network via transesterification reactions. The resulting dual-network polymers exhibit tunability in mechanical properties and excellent reprocessability while retaining structural integrity. Notably, these dual-network systems demonstrate an 18.5±1.9-fold enhancement in mechanical strength compared to their linear polymer counterparts. Moreover, these materials demonstrate remarkable super hydrophobicity (contact angle >108°), enhanced thermal stability, and distinctive light-responsive behavior. This work presents a paradigm-shifting methodology that strategically repurposes side-reaction pathways to synthesize sustainable polymers, advancing the development of sustainable materials for circular economies.
研究领域:
高分子科学
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材料工程
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绿色化学
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可持续材料
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生物大分子
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化学合成
✓ 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）