JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 6
·060538
·
IF 4.386
Jie Hu,Fei Yang,Changgan Lai,Helin Wang,Liu Nie,Jian Sun,Huan Zhou,Lixu Lei
Pb3(OH)2(CO3)2-acetylene black (BLC/AB) composite is successfully prepared by a simple and economical sonochemical method and employed as a negative additive for lead-acid batteries (LABs). The electrochemical measurements show that the obtained BLC/AB electrodes have a higher hydrogen evolution reaction (HER) overpotential compared to AB electrode. BLC/AB-2 and BLC/AB-4 battery deliver the excellent rate performance at 1C rate. What's more, acetylene black as nucleation centers of Pb3(OH)2(CO3)2 may considerably alleviate irreversible sulfation phenomenon of negative plate, thus enhancing the conductivity and extending the cycle life. Interestingly, the cycle life (1172) of BLC/AB-2 battery is 1.44 times that of the same amount of AB battery (814) at 1C rate. Therefore, the BLC/AB composite is a promising negative additive of LABs.
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高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2021
·Vol. 28
·期 6
·e202103601
·
IF 5.236
Jiaxin Wang,Xiaoliang Sun,Hanbin Hu,Tianyang Shen,Guihao Liu,Zewei Li,Dongwei Cao,Lei He,Yu-Fei Song
Graphical Defective but efficient : The binder-free Ni(Co 0.5 Fe 0.5 )/NF, with a unique nanoarray structural feature, was fabricated as a high-efficiency electrocatalyst towards oxygen evolution reaction (OER). Ni(Co 0.5 Fe 0.5 )/NF showed the optimized electronic structure and exposed more defects than Ni(Co 0.5 Fe 0.5 )-bulk and Ni(Co 0.5 Fe 0.5 )-mono prepared by traditional coprecipitation method. As a result, the as-prepared Ni(Co 0.5 Fe 0.5 )/NF demonstrated excellent electrochemical activity with an overpotential of 209 mV for OER at 10 mA cm −2 . The low-cost, high-abundance and durable layered double hydroxides (LDHs) have been considered as promising electrocatalysts for oxygen evolution reaction (OER). However, the easy agglomeration of lamellar LDHs in the aqueous phase limits their practical applications. Herein, a series of ternary NiCoFe LDHs were successfully fabricated on nickel foam (NF) via a simple electrodeposition method. The as-prepared Ni(Co 0.5 Fe 0.5 )/NF displayed an unique nanoarray structural feature. It showed an OER overpotential of 209 mV at a current density of 10 mA cm −2 in alkaline solution, which was superior to most systems reported so far. As evidenced by the XPS and XAFS results, such excellent performance of Ni(Co 0.5 Fe 0.5 )/NF was attributed to the higher Co 3+ /Co 2+ ratio and more defects exposed, comparing with Ni(Co 0.5 Fe 0.5 )-bulk and Ni(Co 0.5 Fe 0.5 )-mono LDHs prepared by conventional coprecipitation method. Furthermore, the ratio of Co to Fe could significantly tune the Co electronic structure of Ni(Co x Fe 1-x )/NF composites ( x =0.25, 0.50 and 0.75) and affect the electrocatalytic activity for OER, in which Ni(Co 0.5 Fe 0.5 )/NF showed the lowest energy barrier for OER rate-determining step (from O* to OOH*). This work proposes a facile method to develop high-efficiency OER electrocatalysts.
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PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Ke Qian,Xiaodong Liang,Qin Liu,Jingying Li,Yi Gan,Jia Yao,Junjie Zheng,Ziang Wu,Yin Yang,Xingtai Liu,Xiang Liu,Lin Lv,Hanbin Wang,Jun Zhang,Houzhao Wan,Hao Wang
Alkaline zinc-based batteries have become a current research hotspot due to their high energy density and safety, but their low cycle stability and rate performance limit their commercial applications. Herein, vertically ordered NiCo 2 S x nanoneedle arrays are prepared using different sulfidation concentrations based on the anion exchange reaction. The highly uniform nanoneedle arrays provide fast ion transport paths and abundant active sites, and the prepared NiCo 2 S x @Ni foam (NiCo 2 S x @NF) electrode has the excellent capacity (121.9 mAh g −1 ), stable cycle performance (91.1 % of capacity retention after 500 cycles), also achieves a maximum energy density of 636.3 Wh kg −1 and a maximum power density of 40.9 kW kg −1 . This paper provides a more precise and accurate idea for preparing cathode materials for durable alkaline Ni–Zn batteries .
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Bin He,Huanhuan Liu,Zheng Lin,Lei Yan,Jiqiang Ning,Yijun Zhong,Changcheng Zheng,Ziyang Zhang,Yong Hu
The practical application of photocatalytic water splitting is essentially limited by the slow kinetic nature of the water oxidation process. Therefore, it is highly desirable but challenging to explore a low-cost and high-efficiency water oxidation catalyst for the aim of commercialization and industrialization. We herein report the first-time synthesis of a novel and high-efficiency visible-light-driven photocatalyst composed of flower-like Co(CO 3 ) 0.5 (OH)·0.11H 2 O (CCO) nanowires and Bi 2 WO 6 (BWO) nanosheets, i.e. CCO/BWO nanocomposite, via a facile hydrothermal method. Without utilizing any additional cocatalyst, the composite of CCO/BWO in 30% weight ratio exhibits extraordinarily high photoactivity and photostability towards O 2 evolution, achieving an average O 2 generation rate of 953 µmol h −1 g −1 under visible-light irradiation (λ > 420 nm).
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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.
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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.
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高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Peng-Fei Chen,Chun-Li Hu,Ming-Yang Cao,Xue-Ying Zhang,Jiang-Gao Mao
The first carbonatotellurites, AKTeO2(CO3) (A = Li, Na), have been successfully synthesized by using boric acid as the mineralizer. AKTeO2(CO3) (A = Li, Na) crystallize in the monoclinic space group P21/n (no. 14), and their structures exhibit the novel zero-dimensional (0D) [Te2C2O10]4– clusters, in which two [TeO4]4– groups form a [Te2O6]4– dimer via edge-sharing, with each side of the dimer attached by a [CO3]2– group via a Te–O–C bridge. The alkali metal cations occupy the voids between the 0D clusters and maintain the charge balance. The ultraviolet–visible–near-infrared diffuse reflectance spectra show that the short absorption cut-off edges of LiKTeO2(CO3) (LKTC) and NaKTeO2(CO3) (NKTC) are 248 and 240 nm, respectively, and LKTC exhibits the largest experimental band gap (4.58 eV) among all of the tellurites containing the π-conjugated anionic groups reported. Theoretical calculations revealed that they exhibit moderate birefringences of 0.029 and 0.040@1064 nm, respectively.
研究领域:
无机化学
·
材料科学
·
固态化学
·
光学材料
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高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.4
Mengchao Feng,Yuchang Wang,Xuewei Lang,Feng Wei,Huayan Si,Jianbin Zhang
This work reports the synthesis of a novel ( α / β- CdS)/Ce(OH)CO 3 composite featuring both heterojunction and heterogeneous junction structures via a simple injection titration-stirring method. The as-prepared composite exhibited excellent visible-light-driven photocatalytic activity for the degradation of high-concentration oxytetracycline (OTC) solution. Under optimal conditions determined by single-factor and response surface analyses, 0.0300 g of the composite achieved a 75.26% degradation efficiency for 50 mL of 160 mg/L OTC solution within 120 min of visible light irradiation. Notably, the composite demonstrated remarkable stability, retaining 62.39% of its initial activity after five cycles, and showed enhanced performance under real sunlight for 120 min, with a degradation rate of 78.50%. The improved photocatalytic performance is attributed to the uniform dispersion of CdS nanoparticles with abundant sulfur vacancies, which increase light absorption and facilitate charge carrier separation. Furthermore, the formation of direct Z -scheme heterojunctions and heterogeneous junctions between CdS and Ce(OH)CO 3 promotes efficient separation and transport of photogenerated carriers, thereby enhancing both photocatalytic activity and material stability.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2013
·Vol. 37
·期 10
·3024-3029
·
IF 2.966
Yinhua Jin,Jianhua Liu,Quan Zheng,Jun Xu,Bhoj Raj Sharma,Guilin He,Min Yan,Lin Zhang,Yang Song,Tao Li,Qinghai Yuan,Yong Sun,Haishan Yang
Molecular imaging techniques have shown increasing potential in the definition and imaging of the structure and function of biological systems for preclinical applications. Herein, we report a high-quality dual-modal imaging platform based on water-stable gadolinium-doped Yb(OH)CO3 nanoparticles. These nanoprobes were prepared via a one-pot method, meeting the criteria for a biomedical material. Compared with iobitridol, which is routinely used in clinical applications, our Yb(OH)CO3:Gd nanoparticles provided greatly enhanced contrast at regularly used clinical voltages. By virtue of their doping with gadolinium, these well-designed nanostructures could also be applied as an excellent MRI nanoprobe, which provided similar biodistribution results with our CT experiments. Detailed in vitro and in vivo toxicological study indicated that the uniformly sized nanoparticles possessed high biocompatibility and also low toxicity, making them safe for clinical use. The concept presented here shows great potential for the design and synthesis of nanoprobes with high imaging efficiency and low systemic toxicity.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Muhammad Saqib,Ali Asghar,Zhangwei Chen,Amal A. Abdel Hafez,Majed Y.A. Almashnowi,Qumail Arshad,Majed Yousef Awaji,Yasir Javad,Mohammed Kuku,Muhammad Shahid Rashid
Transition metal phosphates are gaining attention as an environmentally sustainable and high-theoretical capacity material for electrochemical energy storage devices. This study investigates the impact of adding functionalized graphene Oxide (GO) on the electrochemical sites of cobalt-phosphate (Co 3 (PO 4 ) 2 /GO composite) because of its high surface area and electrical conductivity to open up new possibilities for enhancing the performance of energy storage devices. Herein, nanoflakes like cobalt phosphate and composites with graphene oxide were synthesized using a hydrothermal approach. The crystallinity, morphological effect, and chemical compositional analysis were analyzed via XRD, SEM, and EDS. Then, the electrochemical performance is measured in two different setups, i.e., 2-electrode and 3-electrode cell assembly. In the 3-electrodes setup, the cobalt phosphate/GO composite revealed a high specific capacity of 660 C/g, corresponding to 5 mV/s compared to the individual. In the device performance, cobalt phosphate/GO is utilized as +ev electrode, whereas -ev electrode consists of activated carbon in supercapattery. In their results, the assembled devices produced a specific capacity of 458 C/g with remarkable energy and power density of 82.69 Wh/kg and 433.33 W/kg corresponding to a current density of 0.7 A/g, respectively, with good capacitive retention of 94.77 % after 6 K cycles. Moreover, the theoretical calculation measure from Dunn's model reveals a capacitive contribution increased from 35.51 % to 71.12 % with an increase in scan rates. The study offers a new avenue for advanced energy storage applications.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Lidan Xie,Wenyi Huang,Guoqiang Jiang,Yi Liu,Mude Zhu,Yi Tang,Xueqin Chen,Xiaoyun Fan
The wide occurrence of metronidazole (MNZ) in aquatic environment has aroused increasing concern to the potential adverse effects on human health. Combining different motifs into a photolytic material to achieve high photocatalytic efficiency is regarded as one of the main strategies during photocatalytic process. Herein, a triple anions contained photocatalyst , Ba 3 (BO 3 )(CO 3 )F (BBCF), exhibited excellent removal efficiency of MNZ (92.6%) in 15 min, which was 5.87 times higher than that of commercial P25. The excellent removal efficiency could be attributed to the strong electronegativity of the F − , and the π-conjugated triangles structure of (BO 3 ) 3− and (CO 3 ) 2− , which made BBCF facilitate the transport of photogenerated electrons, thus accelerating the accumulation of active h + . Meanwhile, the appropriate reduction potential of BBCF accounted for the outstanding productivity of O 2 – . h + and O 2 – were proved as the dominant reactive species for MNZ degradation. The degradation products were analyzed by LC-TOF-MS, and the toxicity of the intermediate was evaluated to be lower than that of parent MNZ molecule. Moreover, BBCF showed the universal application of degrading oxytetracycline (OTC), methylene blue (MB). Therefore, anion-rich BBCF catalyst with high catalytic activity has a potential application prospect for degrading harmful pollutants in practical water environment.
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高影响因子
RARE METALS
·
2021
·Vol. 41
·期 1
·166-178
·
IF 4.003
Zhang Bo-Lin,Deng Li-Feng,Liu Bo,Luo Chun-Yun,Liebau Michael,Zhang Shen-Gen,Gläser Roger
Abstract Combining the redox properties of Co and the acid properties of Nb in a Co 3 -Nb-O x catalyst is shown to provide superior performance in the selective catalytic reduction of NO with NH 3 (NH 3 -SCR). Co 3 O 4 shows average activity, however, it exhibits a poor N 2 selectivity. Nb 2 O 5 is not active for NH 3 -SCR. However, the mixed Co 3 -Nb-O x catalyst shows higher NO conversion and N 2 selectivity than the single Co 3 O 4 and Nb 2 O 5 catalysts at 100–300 °C. The results of temperature programmed reduction by H 2 and X-ray photoelectron (XP) spectra indicate that the addition of Nb changes the chemical states of Co and decreases the concentration of Co 3+ and O α , adjusting the activity for catalytic oxidation to a moderate level. This suppresses the formation of undesired N 2 O from the over-oxidation of NH 3 . Incorporation of Co and Nb into one solid synergistically couples their redox behavior and surface acidity, ensuring the high catalytic activity and N 2 selectivity in NH 3 -SCR. Graphical Abstract
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