INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Hongliang Dai,Pengjie Zhou,Shenming Yang,Lili Yang,Hongye Bai,Cui Dai,Guohai Xu,Weiqiang Fan
Electrocatalytic conversion of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) is significant for the sustainable production of value-added chemicals. Active sites of catalysts could enhance the activity and selectivity of the HMF oxidation reaction (HMFOR), but the self-healing ability of active sites has been commonly ignored. In this work, Co(OH)2/Ni-MOF was successfully fabricated for efficient oxidation of HMF to FDCA under mild conditions. Electrochemical and cyclic stability experiments demonstrated the high self-healing properties of the dual active sites (Co3+/Ni3+). So, the retention rate of FDCA yield can still reach 98.5%, even after 90 days. HMFOR was further coupled with 4-nitrophenol hydrogenation, which promotes the yield and Faradaic efficiency of FDCA to about 100%. Therefore, this study explores the self-healing properties of species and provides new insights for designing efficient catalysts.
研究领域:
电化学
·
催化
·
可持续化学
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产品关联
DOI
PubMed
高影响因子
Coatings
·
2025
·Vol. 15
·期 9
·1012
·
IF 2.8
Shijian Sun,Mengquan Liu,Zheng Li,Junqiang Cheng,Dechuan Li
Hollow dendritic Na4La2(CO3)5crystals doped with Sm3+ions were synthesized with sodium carbonate using a hydrothermal method. The unique lifetime of Sm3+enables the optical measurement of luminescent ion content. The X-ray diffraction spectrum indicates that the nanocrystals maintain structural stability with a hexagonal arrangement, even when the concentration of Sm3+reaches 50 at.%. As the concentration of Sm3+increases, the emission intensity of Na4(La1−xSmx)2(CO3)5first rises and then falls. The maximum emission intensity of the fluorescent powder occurs at a Sm3+concentration of 0.04. Beyond this concentration, concentration quenching takes place, primarily due to electric dipole–dipole interactions. Using an excitation wavelength of 404 nm and monitoring at 596 nm, the fluorescence lifetime of Na4(La1−xSmx)2(CO3)5shows a strong dependence on Sm3+concentration, which can be described by a precise equation. Over the range of Sm3+concentrations from 0.005 to 1, the lifetime decreases from 3.126 ms to 0.023 ms. Therefore, optical monitoring of fluorescent powders is crucial for confirming the composition of coatings used in applications such as solid-state lighting and anti-counterfeiting, by utilizing the relationship between lifetime and doping concentration.
研究领域:
材料科学
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光学材料
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发光光谱学
·
固态化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Minglong Guo,Xiaoyan He,Guangxing Yang,Hongjuan Wang,Feng Peng,Guoqiang Cao,Qiao Zhang,Zhiting Liu
In the realm of CO 2 electrochemical reduction, Bi 2 O 2 CO 3 nanosheets have garnered attention for their ability to selectively produce formate. However, as CO 2 electroreduction technologies advance toward industrial applications, a scalable and green synthesis method is urgently needed. Our research leverages three common Bi-based inorganic salts-BiCl 3 , Bi 2 (SO 4 ) 3 , and Bi(NO 3 ) 3 -as precursors to develop a straightforward process of hydrolysis followed by anions exchange. This method produces high yields of Bi 2 O 2 CO 3 nanosheets without the need for organic solvents or external heating, even at a large scale of ~100 grams, ensuring both sustainability and cost-efficiency. The resulting nanosheets achieved Faradaic efficiencies exceeding 90% across a wide range of potentials for formate production. The combination of innovative synthesis and effective CO 2 conversion underscores the potential of Bi 2 O 2 CO 3 for industrial-scale applications in sustainable energy and chemical production.
研究领域:
电化学
·
纳米材料化学
·
可持续能源
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环境催化
·
工业催化
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碳捕集与利用
✓ 已验证
产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2025
·
IF 8
Yang Wan,Jia Li,Xi Wu,Pan Wu,Lin Zhang
Bisphenol A (BPA), a well-recognized endocrine-disrupting chemical, is a significant environmental contaminant linked to various health disorders. Therefore, the development of rapid and sensitive BPA detection methods is essential for accurate monitoring in complex matrices. In this study, an electrochemical biosensor was constructed that synergistically combines the catalytic activity of laccase with the conductive properties of multi-walled carbon nanotubes (MWCNTs). Laccase was effectively immobilized within a Co 3 (PO 4 ) 2 -based hybrid nanoflower through biomimetic mineralization, forming a spatially confined catalytic system. Structural characterization of the nanoflowers revealed their spherical morphology with hierarchical porosity and an average diameter of 6 μm. The laccase@Co 3 (PO 4 ) 2 /MWCNTs nanocomposite-modified glassy carbon electrode demonstrated good catalytic performance for BPA oxidation, exhibiting high sensitivity (3.592 μA·μmol −1 L) and a low detection limit of 0.015 μM (S/N = 3)). Practical applications in analyzing commercial bottled water and plastic infant bottles confirmed the biosensor's reliability. This research presents an efficient and cost-effective approach for BPA risk assessment, contributing to the protection of public health.
研究领域:
环境科学
·
分析化学
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纳米技术
·
电化学
·
生物传感器
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Rui Zhao,Yacong Hu,Wei Ding,Ke Ren,Xinyi Gou,Chun Zhao,Huaili Zheng
Phosphite [P(III)], an emerging eutrophication pollutant, has attracted limited attention in recent years. Owing to the higher solubility and resistance to biotransformation of P(III), oxidation of P(III) to phosphate [P(V)] is considered to be necessary to enhance P(III) removal. Herein, an efficient and regenerable magnetic La 2 (CO 3 ) 3 /CoFe 2 O 4 /biochar composite (LCB) was constructed through a facile one-pot hydrothermal method to treat phosphite-laden wastewater. LCB coupled with peroxymonosulfate (PMS) exhibited satisfactory P(III) removal performance through a one-step process for simultaneous oxidation and adsorption of P(III). The adsorption capacity of LCB/PMS for P(III) (71.94 mg/g) was much higher than that of LCB. LCB/PMS system showed high P(III) removal efficiency of 96.62 %, wide pH ranging from 4.0 to 9.0, and good reusability. It also worked well in the existence of anions and humic acid. The quenching experiments and electron spin resonance tests (ESR) revealed the critical role of SO 4 • - in the P(III) oxidation process. Characterization results demonstrated that electrostatic attraction and ligand exchange were responsible for P(III)/P(V) adsorption. Moreover, LCB/PMS system presented desirable performance in eliminating a series of typical organic and inorganic phosphorus. The LCB/PMS system provides a promising and sustainable technology for the purification of P(III)-contaminated water.
研究领域:
环境科学
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化学工程
·
水处理技术
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产品关联
DOI
高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2016
·Vol. 31
·期 6
·1211-1218
·
IF 0.4
Zhang Dan,Zhao Guoqing,Yu Jingang,Yan Tao,Zhu Mingyue,Jiao Feipeng
Adsorption of 2, 4, 6-trichlorophenol (TCP) onto the calcined Mg/Al-CO 3 layered double hydroxide (CLDH) was investigated. The prepared Mg/Al-CO 3 layered double hydroxide (LDH) and CLDH were characterized by powder X-ray diffraction (XRD) and thermo gravimetric analyzer-differential scanning calorimeters (TG-DSC). Moreover, 2,4,6-trichlorophenol (TCP) was removed effectively (94.7% of removal percentage in 9 h) under the optimized experimental conditions. The adsorption kinetics data fitted the pseudo-second-order model well. The Freundlich, Langmuir, and Tempkin adsorption models were applied to the experimental equilibrium adsorption data at different temperatures of solution. The adsorption data fitted the Freundlieh adsorption isotherm with good values of the correlation coefficient. A mechanism of the adsorption process is proposed according to the intraparticle diffusion model, which indicates that the overall rate of adsorption can be described as three steps.
研究领域:
环境科学
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Zhiyong Bai,Lehui Liu,Zhoubin Lin,Kang Min Ok
A novel guanidinium-templated ultraviolet (UV) nonlinear optical zinc carbonate crystal, [C(NH2)3]2Zn(CO3)2 (GZCO), has been synthesized in a closed system at low temperatures. GZCO crystallizing in the tetragonal noncentrosymmetric nonpolar space group, P41212 exhibits a three-dimensional anionic framework constructed by interconnected [Zn6C6O32] 12-membered ring channels with inorganic CO3 triangles and ZnO4 tetrahedra. Notably, the anhydrous GZCO shows a very high thermal stability among guanidine-based hybrid NLO materials benefiting from the confinement effect of the organic cations within inorganic channels. The UV–visible transmittance spectrum reveals that GZCO has a short UV cutoff edge of 210 nm, corresponding to the large band gap of 5.9 eV. GZCO exhibits a mild second-harmonic generation efficiency of 0.5 × KH2PO4 with type-I phase-matching behavior.
研究领域:
材料科学
·
光学
·
化学
✓ 已验证
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2025
·
IF 4.7
Yun Deng,Shukui Shi,Di Zhao,Mohan Zu,Lu Pang,Xin Li,Zhihao Du,Xiaoli Jin,Zhengdao Li,Fengyun Su,Haiquan Xie
Photocatalytic H 2 O 2 production suffers from severe charge recombination and sacrificial agent dependency. Hydrangea-like Co-doped CdIn 2 S 4 superstructures (Co/CIS (HD)) synthesized via hydrothermal method exhibit hierarchical porous architecture that enhances light harvesting and reactant diffusion. Atomic Co doping introduces mixed-valence Co 2+ /Co 3+ species, reducing the work function from 6.287 to 5.896 eV and extending carrier lifetime. The dual-valent system establishes a self-regenerative redox cycle where Co 3+ mediates photogenerated electron transfer for O 2 activation while Co 2+ scavenges holes to suppress recombination and photocorrosion. Without sacrificial agents, the optimized 6.5-Co/CIS (HD) achieves an exceptional H 2 O 2 production rate of 1952 μmol g −1 h −1 under visible light, 6.33 times higher than pristine CdIn 2 S 4 . The catalyst maintains structural stability over five cycles due to dynamic Co 2+ /Co 3+ regeneration. This work provides a strategic design for efficient photocatalytic H 2 O 2 synthesis via synergistic morphological and electronic engineering.
研究领域:
材料科学
·
光催化
·
环境化学
·
能量转换
·
纳米材料
✓ 已验证
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2021
·Vol. 5
·期 1
·184-194
·
IF 5.693
Liang Ying,Xia Meng,Yu Qiuhan,Li Yongpeng,Sui Zhuyin,Yuan Yihui,Hu Xin-Ming,Chen Qi,Wang Ning
Uranium, which was abundant in the ocean but existed in the form of uranyl tricarbonate ([UO 2 (CO 3 ) 3 ] 4− ) with an extremely low concentration of 3.3 ppb, was a significant element of nuclear energy. It is of immediate significance to the research into uranium extraction by the exploration of adsorbents for environment and resource sustainability. Herein, the new ionic covalent organic frameworks (iCOFs) named COF-DG containing the guanidine groups was designed and synthesized via Schiff base reaction between diaminoguanidine hydrochloride and 1,3,5-triformylphloroglucinol. The adsorption performance indicated that the COF-DG possessed an uptake capacity of 65.6 mg g −1 toward the [UO 2 (CO 3 ) 3 ] 4− , attributed to the chemical interaction and anion exchange between [UO 2 (CO 3 ) 3 ] 4− and the cationic COF-DG with Cl − , as well as the electrostatic attraction. Besides, the COF-DG exhibited a higher affinity and selectivity toward [UO 2 (CO 3 ) 3 ] 4− in the presence of the competing anions. Furthermore, the COF-DG displayed an antibacterial rate of 82% against Gram-negative bacteria Escherichia coli owing to the guanidine groups. This work contributes new insights into the further development of iCOFs, for applying as a potential candidate in uranium extraction from seawater in practical engineering. Graphical abstract The new ionic covalent organic frameworks named COF-DG was designed and exploited via Schiff base reaction, which exhibited a higher affinity and selectivity toward the [UO 2 (CO 3 ) 3 ] 4− .
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2015
·
IF 2.719
Dafeng Zhang,Xipeng Pu,Sun Il Kim,Peiqing Cai,Cuili Chen,Hyo Jin Seo
Na 4 La 2−2 x Tb 2 x (CO 3 ) 5 ( x =0–0.5) nanophosphors were prepared via hydrothermal method , and the photoluminescence , concentration quenching, luminescence color chromaticity and thermal activation energy of samples were measured. The results indicate that samples with x values of 0–0.5 possess the pure monoclinic phase with an absorption edge at 250 nm. Na 4 La 2−2 x Tb 2 x (CO 3 ) 5 ( x =0–0.5) phosphors exhibit green luminescence, attributed to the 5 D 4 → 7 F J ( J =6, 5, 4, 3) transitions of Tb 3+ . The concentration quenching takes place at about x =0.3, but no decreased luminescence intensity is observed; moreover, the activation energy of thermal quenching of Na 4 LaTb(CO 3 ) 5 nanophosphor was calculated to be 0.116 eV. The luminescence properties of Na 4 La 2−2 x Tb 2 x (CO 3 ) 5 are benefited from its structural characteristics: long distance between Tb 3+ ions and the ordered distribution of Tb 3+ ions.
研究领域:
材料科学
·
发光材料
·
无机化学
·
纳米技术
·
光学性质
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Mingfei Yu,Xiangyu Kong,Jianhui Luo,Hanqiang Zhou,Yanxin Gao,Chenghui Zheng,Qiaoshan Chen,Jinhong Bi
The semiconductor-insulator heterostructure, characterized by outstanding economic-efficiency and catalytic activity, represents a promising photocatalyst for practical pollutants degradation. However, achieving energy band matching between semiconductors and insulators remains a challenge. In this study, we meticulously designed and synthesized a band-matched semiconductor-insulator photocatalysts (AgI-BaCO 3 ), leveraging the in-situ nucleation of ultrafine AgI nanoparticles on BaCO 3 surface. The finely crafted heterostructure notably enhanced degradation efficiency of tetracycline over both pure AgI and BaCO 3 , demonstrating a remarkable pseudo-first-order kinetic rate constant that surpassed them by 27.2 and 33.5 times, respectively. The density functional theory calculations uncovered that the intense covalent interaction between AgI and BaCO 3 established a specific channel for interfacial charge carriers. The generated CO 3 ·- radicals as the main active species markedly expedited the removal of antibiotics. Furthermore, the catalysts demonstrated robust activity in real wastewater and surface water. This work supplies a novel reference for constructing insulator-based photocatalysts and elucidates its potential application in actual aquatic environments.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2017
·Vol. 33
·期 6
·965-970
·
IF 1.024
Liu Shankui,Liu Pengcheng,Niu Ruyue,Wang Shuang,Li Jinping
Flower-like Co 3 O 4 hierarchical microspheres composed of self-assembled porous nanoplates were prepared by employing Pluronic F127 block-copolymer as template. The samples were characterized by powder X-ray diffraction(PXRD), scanning/transmission electron microscopy(SEM/TEM), and nitrogen adsorption-desorption at 77 K. The results show that the catalytic activity of Co 3 O 4 nanoflowers for the combustion of ventilation air methane is higher than that of commercial Co 3 O 4 . The superior catalytic performance of this material can be related to its dominantly exposed {112} crystal planes and higher content of surface Co 3+ .
研究领域:
材料科学
·
环境催化
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）