CHINESE JOURNAL OF POLYMER SCIENCE
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2025
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IF 4
Yu Shi-Han,Wang Lu,Zhang Meng-Chao,Li Hong-Kun
Exploration of new green polymerization strategies for the construction of conjugated polymers is important but challengeable. In this work, a multicomponent polymerization of acetylarenes, alkynones and ammonium acetate for in situ construction of conjugated poly(triarylpyridine)s was developed. The polymerization reactions of diacetylarenes, aromatic dialkynones and NH 4 OAc were performed in dimethylsulfoxide (DMSO) under heating in the presence of potassium tert-butoxide ( t -BuOK), affording four conjugated poly(2,4,6-triarylpyridine)s (PTAPs) in satisfactory yields. The resulting PTAPs have good solubility in common organic solvents and high thermal stability with 5% weight loss temperatures reaching up to 460 °C. They are also electrochemically active. The PTAPs incorporating tetraphenylethene units manifest aggregation-induced emission features. Moreover, through simply being doped into poly(vinyl alcohol) (PVA) matrix, the polymer and model compound containing triphenylamine moieties exhibit room-temperature phosphorescence properties with ultralong lifetimes up to 696.2 ms and high quantum yields up to 28.7%. This work not only provides a facile green synthetic route for conjugated polymers but also offers new insights into the design of advanced materials with unique photophysical properties.
研究领域:
高分子化学
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材料科学
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有机合成
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DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
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2020
·Vol. 96
·期 4
·980-989
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IF 2.75
Xiao-Jia Tang,Zhong-Yuan Du,Heng-chao Chuang,Yi-Min Zhu,Yang-yuan Ji,Xiao-Yi Li,Yu-Zhe Zhao,Hai-Bo Kuang
BACKGROUND The dissolubility of magnesium hydroxide is often the main factor limiting its application effect in the environmental field, and the dissolution rate of magnesium hydroxide during its synthesis is also worthy of attention. In this paper, response surface methodology was used to synthesize magnesium hydroxide with different dissolution rates through a magnesium oxide/ammonium acetate hydration system, and the possible formation mechanism as well as dissolution performance is discussed. RESULTS Compared with the hydration temperature and time, the concentration of ammonium acetate has a more significant effect on the dissolution rate of hydrated magnesium hydroxide. A maximum dissolution rate of 43.8 ± 0.3 mmol min −1 mol −1 magnesium hydroxide could be obtained when the working factors were ammonium acetate concentration 15 g L –1 , hydration temperature 75.5 °C and time 112 min. CONCLUSION The correlation study between structural characterization and the dissolution test shows that the complexation and replacement of acetate, in situ generation and release of ammonia appear to have some critical effects on magnesium hydroxide crystallization behaviour and induce the formation of thin, curved and defective structures. Crystals with such structures have been reported to have a higher dissolution activity. The results of this study provide an indication for screening hydration synthetic agents of high-dissolution-rate magnesium hydroxide. © 2020 Society of Chemical Industry (SCI)
研究领域:
环境科学
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化学工程
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DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
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2021
·Vol. 27
·期 70
·17620-17627
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IF 5.236
Gen Liu,Xue Yu,Rui Xu,Xiaodong Zhu,Yanqing Ma,Lei Ma
Graphical The final morphology of ZnO generally involves nucleation, Ostwald ripening and self-assembly process. Herein, the nucleation experienced the Zn 2+ -layered basic zinc salts (LBZs)-ZnO process, while the self-assembled unit changed from urchin-shaped to rod-shaped and gradually a fully coupled twin-shaped structure with the increasing concentration of ammonium acetate. The whole growth process clarifies the roles of ammonium acetate in the growth mechanism of ZnO, which may further benefit the optimal synthesis of functional structures. Chemical bath deposition method has been used to synthesize a variety of ZnO morphology structures. However, the specificity and interaction of acetate and ammonium ions with ZnO crystal during the growth process remain elusive. This study contributes to understand the roles of ammonium acetate on the growth mechanism of ZnO in Zn(NO 3 ) 2 -HMTA system. The growth process indicates that the nucleation experienced Zn 2+ -layered basic zinc salts (LBZs)-ZnO process, while the self-assembled unit changed from urchin-shaped, rod-shaped to a fully coupled twin-shaped structure with increasing ammonium acetate concentration. Ammonium acetate dominates the growth process by combing the ligand-ligand interaction of acetate ions binding to the same Zn-rich (0001) polar surface and ammonium ions regulating hexamethylenetetramine (HMTA) hydrolysis. Relatively regular hexagonal wurtzite structure and a dissolve-renucleation-regrowth process which retains the twin-shaped template and renucleates at the same position are observed at ∼10 mM ammonium acetate. Photoelectrochemistry (PEC) measurements show that the uniform hexagonal ZnO rods (Y-10, the sample named as Y-x (x represents x mM ammonium acetate, herein, x is 10 mM)) have a maximum photocurrent density of 1.54 mA cm −2 at 1.23 V (vs. RHE), much higher than that of the dumbbell-shaped ZnO rods (Y-50, 0.20 mA cm −2 ) at the same voltage. These results provide a further explanation of morphology regulation mechanisms on ZnO synthesis processes and pave the road for more practical applications.
研究领域:
材料科学
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化学
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产品关联
DOI
PubMed
高影响因子
Greenhouse Gases-Science and Technology
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2023
·Vol. 13
·期 6
·814-828
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IF 2.2
Yuhang Yang,Wenxiu Li,Zhiwei Xun,Zhenwei Yi,Tao Wang,Zitao Yu,Yan Huang,Yongzheng Gu
In light of the current situation where the utilization of calcium carbide slag yields low profits but holds significant potential for reducing carbon emissions, ammonium acetate was employed to leach calcium carbide slag. It also played a crucial role in regulating the products of indirect carbon dioxide carbonation when mixed with glycine and lye. Ammonium acetate's significance underscores its dual role in both the leaching and carbonation processes. This process yielded calcium carbonate with particle sizes smaller than 100 nm, with a purity of 98% and a single vaterite phase. The calcium carbide residue demonstrated an impressive CO 2 uptake rate of 23.5%. Ammonium acetate exhibited an efficiency of 79.2% as a leaching agent. The ammonium acetate method demonstrated enhanced environmental friendliness and facilitated a more efficient carbon uptake rate of 23.5% compared to conventional indirect methods. Furthermore, the addition of lye, glycine, and ammonium acetate effectively extended the nucleation time of the calcium carbonate crystals and induced the formation of more vaterite intermediates with smaller particle sizes. The influence mechanism of compound additives on the carbonation reaction was revealed through kinetic analysis and molecular dynamics. This innovative approach offers a promising avenue for simultaneously treating solid waste and reducing CO 2 emission. © 2023 Society of Chemical Industry and John Wiley & Sons, Ltd.
研究领域:
环境科学
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化学工程
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材料科学
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2022
·
IF 10.383
Hang Zhong,Wenbo Li,Yin Huang,Duoling Cao,Congqiang Zhang,Huaxi Bao,Zhiguang Guo,Li Wan,Xu Zhang,Xiuhua Zhang,Yuebin Li,Xiaoming Ren,Xianbao Wang,Dominik Eder,Kai Wang,Shengzhong Frank Liu,Shimin Wang
All-inorganic CsPbI3 perovskites have great potential in tandem cells in combination with other photovoltaic devices. However, CsPbI3 perovskite solar cells (PSCs) still face a huge challenge, resulting in a low power conversion efficiency (PCE) relative to organic–inorganic PSCs. In this work, we introduced tetrabutylammonium acetate (TBAAc) as a buffer layer between the SnO2 electron-transport layer (ETL) and CsPbI3 all-inorganic perovskite film interface for the first time. TBAAc not only improved the conductivity of SnO2 ETL but also formed a 1D TBAPbI3 layer between the SnO2 ETL and the 3D CsPbI3 all-inorganic perovskite film, thereby enhancing the stability and passivating the surface defects of the CsPbI3 perovskite to fabricate high-efficiency carbon-counter electrode (CE)-based CsPbI3 solar cells. We fabricated carbon-CE-based hole-transporting layer ( HTL)-free PSCs with an FTO/SnO2/TBAAc/CsPbI3/C structure. The open-circuit voltage (Voc), short circuit current density (Jsc), PCE, and fill factor of the champion CsPbI3 PSCs simultaneously enhanced to 1.08 V, 17.48 mA/cm2, 12.79, and 67.8%, respectively. This PCE is currently one of the high efficiencies reported for the above planar-structured carbon-CE-based CsPbI3 PSCs to date. Moreover, the optimized device exhibits excellent stability, which retained over 83% of its initial PCE after 350 h. This work provides a facile way of simultaneous optimization of the SnO2 ETL and the CsPbI3 perovskite layer to fabricate stable and high-efficiency carbon-CE-based CsPbI3 PSCs.
研究领域:
材料科学
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可再生能源
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光伏技术
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2021
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IF 7.312
Chun Pei,Pi-yu Chen,Si-Cheng Kong,Junlin Wu,Ji-Hua Zhu,Feng Xing
Chemical swelling and electrochemical oxidation are combined to realize the separation and recovery of carbon fibers from carbon fiber-reinforced plastic (CFRP) in dimethyl sulfoxide (DMSO) at normal temperature and pressure. The results showed that the depolymerization rate of epoxy resin in CFRP increased with increasing ammonium acetate concentration and current density, and the influence of the current density was more significant than that of the concentration. Microscopic analysis showed that the recycled carbon fibers had few residual resin on their surfaces and mild electrochemical oxidation etching, and recycled carbon fiber monofilament achieved a tensile strength and an interfacial shear strength that were 93.55% and 118.76% those of the original fibers.
研究领域:
材料科学
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复合材料
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回收技术
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环境工程
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2019
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IF 6.393
Yajuan Cai,Wensheng Huang,Kangbing Wu
Generally, materials with different morphologies are expected to have different electrochemical properties. Here, three kinds of erbium-based metal-organic frameworks with different morphologies were prepared using erbium nitrate and 1,3,5-benzenetricarboxylic acid (H 3 BTC) as the source in N, N - dimethylformamide (DMF) by adding various amounts of ammonium acetate (CH 3 COONH 4 ). The characterization of X-ray diffraction, infrared spectroscopy and X-ray photoelectron spectroscopy proved that the obtained materials were Er-BTC. Scanning electron microscope measurements indicated that the amount of CH 3 COONH 4 had obvious effects on the morphology. More importantly, the active sensing area and interface electron transfer ability of Er-BTC were controlled by the morphology, which revealed by rotating ring disk electrode and electrochemical impedance spectroscopy. Moreover, the prepared Er-BTC with different morphologies exhibited different signal enhancement ability toward the oxidation of azo dyes (allura red and rhodamine B) and flavonoids (quercetin and luteolin). Based on the morphology-controlled sensing of Er-BTC, a highly sensitive detection platform were developed for allura red/rhodamine B and quercetin/luteolin, with detection limits of 0.30/0.56 nM and 0.22/0.14 nM. Besides, this new method was successfully used in drink and tea samples, and the results were in good agreement with those obtained from high-performance liquid chromatography.
研究领域:
材料科学
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分析化学
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电化学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Shengtai Hou,Qihan Wang,Yazheng Zhang,Weihua Zhao,Ran Ma,Hongjie Wang,Kang Xia
Persistent antibiotic residues, such as tetracycline (TC), in mariculture wastewater pose significant challenges during the photocatalytic degradation process, including the high salinity-induced occupation of active sites and the high-energy light-induced energy consumption. Herein, a novel hydrophobic porous zinc‑silicon hybrid material (Zn-Si@SMS) was rapidly synthesized at room temperature through H 2 O-assisted grinding of sodium methylsilicate and zinc acetate. The low surface energy groups (–CH 3 ) endow Zn-Si@SMS with hydrophobicity, which facilitates selective pollutant adsorption in saline environments, solving the common issue of salt ion interference. Additionally, oxygen vacancies can enhance visible light absorption and charge carrier separation, thus enabling the direct utilization of visible light. It can also enhance the adsorption of tetracycline, thereby improving degradation efficiency. Specifically, under visible light and in a high-salt environment, Zn-Si@SMS achieves high degradation efficiencies for tetracycline (removal rate >96.2 %). Zn-Si@SMS demonstrates high efficiency in degradation of various antibiotics (tetracycline (removal rate >98.5 %), oxytetracycline (removal rate >96.6 %), doxycycline hydrochloride (removal rate >97.4 %), ciprofloxacin (removal rate >87.5 %), and norfloxacin (removal rate >94.9 %) in highly saline water (NaCl, KNO 3 , KCl, CaCl 2 , NaBr, Na 2 SO 4 ) under natural sunlight and 96 % removal rate in actual seawater within 1 h. This system avoids the use of costly metals (Bi, Cu, In, Ag) and high-temperature synthesis processes (>120 °C). The affordability of Zn-Si@SMS highlights the potential of tetracycline degradation by visible light, offering a green and sunlight-driven solution for water purification.
研究领域:
环境科学
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材料化学
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光催化
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水处理
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可持续技术
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Jinzhi Cao,Yilin Zhao,Meihui Chen,Zhiyi Zhao,Yuhan Xiong,Dingding Tang,Yan Zhou,Xiong Qin,Nanqi Ren,Hui Wang,Jie Ding
Visible light-driven degradation of chlorophenols using metal-free photocatalysts has attracted significant attention. Two-dimensional covalent organic frameworks (2D COFs) exhibited high levels of visible-light activity. To address the challenges of insufficient redox capacity and recombination of photogenerated carriers of COFs, an S-scheme heterojunction is constructed from COFs with nitrogen vacancies modified graphitic carbon nitride (NVCN) to improve photocatalytic activity. Introducing electron donors (-OH and -C C) into COF could reduce the optical band gap and increase visible-light absorption. Meanwhile, they can form donor-acceptor (D-A) effects with nitrogen vacancies, thereby redistributing charge and enhancing the transfer rate of photogenerated electrons. Formation of S-scheme heterojunction effectively enhances the migration of photogenerated carriers and redox ability, the optimized heterojunction (COF-C C/NVCN) was able to degrade 98 % 4-chlorophenol within 90 min under visible light irradiation ( k = 0.044 min –1 ), which was 10–12 times higher than COF-H/NVCN or NVCN. This study provides the great potential of D-A COF/NVCN-based S-scheme heterojunctions for environmental remediation.
研究领域:
环境科学
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材料化学
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光催化
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有机半导体
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污染物降解
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Ying Ma,Yi Ren,Chao Liu,Bo Lai,Jun Li
Previous studies have developed numerous peroxymonosulfate (PMS) activation technologies and demonstrated remarkable decontamination efficiency for emerging contaminants represented by antibiotics in aqueous environments. However, most research has focused on investigating the decontamination effect and mechanisms using simulated solutions prepared with pure water, lacking in-depth exploration of actual wastewater treatment efficacy and mechanisms. In this study, practical aquaculture wastewater from a shrimp culture farm was selected, innovatively leveraging its high salinity characteristics to reveal the endogenous Cl − /PMS self-activation pathway for hypochlorous acid (HClO) generation. Results show that the inherent chloride and cobalt ions in the wastewater react with PMS to form active species, achieving sulfamethoxazole (SMX) degradation efficiency that surpasses systems with externally added catalysts. Through radical quenching experiments, specific probes, and electron paramagnetic resonance technology, the active species in the endogenous substances/PMS system were identified as HClO and Co(IV) = O, with contribution ratios determined to be about 80 % and 20 % respectively. Combined with density functional theory calculations and intermediate analysis, the Cl − mediated PMS activation pathway and SMX degradation intermediate formation routes were elucidated. Finally, the system also enabled synchronous removal of antibiotic-resistant bacteria (ARBs). This study provides new insights into utilizing endogenous pollutants and mechanistic interpretation during PMS-based treatment of practical wastewater, and develops a new idea of “waste treats waste” strategies.
研究领域:
环境科学
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水处理
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高级氧化技术
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污染物降解
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抗生素抗性
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2025
·
IF 11.3
Weifang Zhang,Lianyang Huang,Weijing Guo,Yuan Cheng,Menglu Zhang,Aristides Bakandritsos,Radek Zbořil,Chunli Wang
In Fenton-like reactions, the elevation of the spin state of transition metals enhances the redox processes of adsorbed peroxides and improves the oxidative performance. This study reports an easily accessible carbon-supported high-spin cobalt cluster, Co–NCs/C, which demonstrates enhanced kinetics through selective high-valent cobalt-oxo species (Co(IV)═O) generation for peroxymonosulfate (PMS)-induced catalytic oxidation. This catalyst achieves rapid degradation of sulfamethoxazole (SMX) within the modified kinetic rate constant (k-value) of 2001.7, surpassing all previously reported Co-based catalysts. Furthermore, combined experimental characterizations and density functional theory calculations demonstrate the stable size distribution of cobalt clusters anchored on carbon supports. Within a broad size distribution (0–6 nm), these clusters consistently retain high-spin configurations and exhibit excellent catalytic performance in SMX degradation. The tailored electronic structure of the high-spin Co sites enhances the adsorption and activation of PMS, thereby accelerating the degradation process. This work provides a practical and cost-effective strategy for designing high-efficiency catalysts for PMS-based advanced oxidation processes.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Jianyi Wu,Lingxuan Li,Miao Chen,Meijuan Zeng,Xinlin Huang,Wenqing Tu
Per- and polyfluoroalkyl substance (PFAS) accumulation and increasing drought events pose threats to agricultural ecosystem safety. However, the mechanisms by which post-drought rehydration (PDR) modulates compensatory PFAS migration at the soil–water interface remain unclear. To address this, this study investigated PFAS translocation across overlying water (OW), soil solution, soil microbe-adsorbed fraction (SM), and other soil fractions (OF) in paddy soils under PDR conditions. The results revealed significant releases of short-chain PFASs into OW under PDR, with migration rates ranging from 2.69 to 11.07 μg/L/day. Drought further accelerated the distribution of short-chain PFASs in OW after rehydration ( β = 0.51) and inhibited their retention in SM ( β = −0.43) and OF ( β = −0.74). The compensatory migration of short-chain PFASs was regulated by both abiotic and biotic factors. In contrast, the compensatory migration of long-chain PFASs was mainly driven by biotic factors, including soil bacteria and protozoa. Soil untargeted metabolomics identified 7-chloro-L-tryptophan (associated with oxidative stress response) and N-acetyl-L-phenylalanine (associated with amino acid metabolism) as key metabolites involved in PFAS migration ( p < 0.05). Verification experiments further confirmed that these two metabolites significantly altered PFAS release at the soil–water interface ( p < 0.001). These findings provide new insights into PFAS pollution control in drought-affected paddy fields and highlight the need for targeted management strategies to ensure agricultural safety under dynamic climate conditions.
研究领域:
环境科学
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土壤化学
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生态毒理学
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农业生态系统
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气候变化影响
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代谢组学
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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）