JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2025
·
IF 2.1
Ruxue Yao,Yang Ge,Jiangtao Song,Fei Yuan,Yafei Guo,Tianlong Deng
The Qaidam Basin has potassium- and calcium-rich oil field brine resources at high temperatures. Since the phase diagram is a powerful tool to guide the separation and purification of inorganic chemical engineering for the development of potassium resources in oil field brine, the quaternary oil field brine system (Na+, K+, Ca2+//Cl– -H2O) and its two subsystems ((Na+, Ca2+//Cl– -H2O) and (K+, Ca2+, //Cl– -H2O)) at 338.15 K were reported for the first time by the isothermal dissolution equilibrium method. The compositions of the equilibrium solid phases were analyzed and identified by combined chemical analyzing and X-ray diffraction. The quaternary system has four crystallized regions corresponding to NaCl, KCl, KCl·CaCl2, and CaCl2·2H2O at 338.15 K, and the incongruent double salt KCl·CaCl2 occurred at 338.15 K. The study facilitates the enrichment of thermodynamic data and exploits brine-based potassium resources.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 32
·期 15
·2111125
·
IF 18.808
Binyao Liu,Jinyan Du,Gaili Ke,Bi Jia,Yujie Huang,Huichao He,Yong Zhou,Zhigang Zou
g -C 3 N 4 photocatalysis is a safe and green approach for H 2 O 2 production, but the activity of pristine g -C 3 N 4 photocatalysts is unsatisfactory. At present, most of the modifications on g -C 3 N 4 photocatalysts for H 2 O 2 production have focused on thermodynamic processes, few have considered the kinetic aspects. Herein, the surface N -hydroxymethylation of g -C 3 N 4 photocatalysts for the efficient kinetic production of H 2 O 2 is reported. Through the reaction of formaldehyde with the amino moieties (–NH 2 ) on the g -C 3 N 4 surface, N -hydroxymethyls groups (-NH-CH 2 -OH) are introduced on typical g -C 3 N 4 photocatalysts. Relative to the pristine g -C 3 N 4 photocatalysts, the modified g -C 3 N 4 photocatalysts have over 1280% higher activity for H 2 O 2 production in pure water system, and impressive solar-to-chemical conversion efficiency. The experimental investigations and theoretical calculations reveal that the introduction of -NH-CH 2 -OH on the g -C 3 N 4 photocatalysts does not change their morphology, light absorption intensity and edges, band positions, charge separation and transfer properties, but markedly improved the H 2 O dehydrogenation and O 2 adsorption properties of g -C 3 N 4 . As a result, the reduction kinetics of O 2 to H 2 O 2 on the g -C 3 N 4 photocatalysts with -NH-CH 2 -OH is more energetically favorable. This work provides a useful reference and inspiration to achieve the effective modification of g -C 3 N 4 or other metal-free photocatalysts from the kinetic perspective.
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高影响因子
Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-19
·
IF 36.3
Liu Jianghe,Dang Qianxi,Yuwono Jodie,Zhang Shilin,Tai Zhixin,Guo Zaiping,Liu Yajie
A hydrogel electrolyte regulation strategy of the water coordination environment can effectively restrain the hydrogen evolution reaction, Zn corrosion and dendrite formation in the wide-temperature ranges.
Prepared high-environment-adaptable hydrogel electrolytes (HEA-3) exhibits a high reversibility of zinc deposition/stripping (coulombic efficiency of 99.4% for Zn||Cu cell).
Zn-based device using HEA-3 electrolyte can do cycling over 30,000 cycles at a large current density of 2 A g −1 at − 40 °C and also can do normal cycling even at -70 °C.
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DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Chunyang Guo,Fengdi Wang,Jiao Wang,Haiyan Liu,Bingyan Han,Gaohong He
Photocatalytic systems often suffer from rapid charge recombination and demanding operational requirements. Current photocatalytic oxidation reactions often require the addition of external oxidants. Herein, we develop nitrogen-doped carbon dots (CDs) as a highly efficient photocatalyst with H 2 O as electron acceptors. The optimized CDs achieve exceptional degradation of methyl orange and rhodamine B with rate constants of 0.275 min -1 and 0.307 min -1 , significantly surpassing many reported catalysts. Under ambient sunlight, they rapidly oxidize TMB within 10 s by generating hydroxyl radicals (·OH) from H 2 O. Nitrogen doping elevates the valence band to 2.94 eV, exceeding the ·OH formation potential, while pyrrole N and the conjugated π-system enhance water adsorption and electron transfer. Radical trapping confirms ·OH as the primary active species. This work provides a new paradigm for solar-driven oxidation via rational molecular-level design.
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高影响因子
Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 35
·29590-29597
·
IF 9.5
Pengyu Wei,Peng Fu,Liuzhen Bian,Changyang Liu,jianquan Gao,Lei Xing,Chaoyi Wang,Lilin Yang,Yong Li,Shengli An
The development of high-performance perovskite cathodes is critical for advancing carbon-neutral energy technologies through efficient CO2-to-fuel conversion in solid oxide electrolysis cells (SOECs). In this work, we present a groundbreaking dual-functional engineering strategy that simultaneously achieves in situ exsolution of Fe nanoparticles and oxygen vacancy formation in Sr2−xFe1.5Mo0.5O6−δ perovskites. By correlating A-site deficiency with tailored reduction protocols, we demonstrate precise control over Fe nanoparticle density and the oxygen vacancy concentration, synergistically addressing the dual bottlenecks of CO2 activation kinetics and ionic transport limitations. The engineered cathode delivers record-breaking performance: −0.92 A cm−2 (H2O electrolysis@800 °C/1.3 V) and −1.58 A cm−2 (co-electrolysis@800 °C/1.5 V), surpassing that of benchmark perovskites. The dual-modified architecture demonstrates unprecedented durability with 120 h of steam electrolysis and 80 h of co-electrolysis operation at 750 °C/0.5 A cm−2. This work establishes a materials design paradigm that directly bridges atomic-scale defect engineering with macroscale energy conversion efficiency, offering a scalable pathway for transforming industrial CO2 emissions into renewable fuels.
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高影响因子
Journal of Energy Chemistry
·
2025
·
IF 14.9
Lifeng Han,Haorun Li,Kunming Hou,Yan Guo,Hao Wu,Mengbo Zou,Yulu Wang,Zhihua Guo,Huangdong Wang,Guixiang Ma,Shangpeng Liu,Xiaojun Gu,Shanghong Zeng
Industrial fly ash-derived SiO 2 aerogel with abundant mesopores has an excellent ability to support active ingredients for constructing efficient and stable catalyst in electrochemical CO 2 reduction reaction (CO 2 RR). However, how to select and arrange active sites on its surface poses significant challenges due to its non-conductive nature. Here, we subtly designed and synthesized multi-component architectures to achieve the high efficiency of CO 2 RR to CO. The embedding of active and amorphous nitrogen-doped carbon (NC) nanosheets on the surface and inside of SiO 2 aerogel ensures the charge transport on the catalyst surface, and Er 2 O 3 improves dissociation of H 2 O, enabling the supply of protons for CO 2 RR. Simultaneously, Er 2 O 3 -induced defects/vacancies, nanoclusters coordinated with N on amorphous NC and single Ni in NC play crucial role in enhancing adsorption and activation of CO 2 . Consequently, the Ni-Er 2 O 3 /NC-SiO 2 catalyst exhibits the maintenance of FE CO higher than 95 % over a wide potential window (−0.22 to −1.12 V vs. RHE) in a flow cell with gas-liquid-solid electrode. This work not only provides an atomistic understanding of nature of active sites in CO 2 RR but also contributes to the secondary utilization of industrial fly ash for a carbon-neutral future.
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高影响因子
Advanced Optical Materials
·
2022
·Vol. 10
·期 12
·2102619
·
IF 10.05
Binbin Su,Jiance Jin,Yinhui Peng,Maxim S. Molokeev,Xiaobao Yang,Zhiguo Xia
The discovery of rare-earth free luminescent materials with blue-light-excitable characteristic is of great importance for solid-sate lighting applications. Herein, a Cu(I)-based 0D luminescent hybrid ( 1,3-dppH 2 ) 2 Cu 4 I 8 ∙H 2 O is synthesized by a facile solution method, and it shows the orange-red emission peaking at 625 nm upon 460 nm excitation. The structure-related luminescence mechanism has been elaborated by experimental and theoretical investigations. Moreover, the emission intensity remains unchanged even after continuous water treatment for 60 days due to the improved structural stability originating from intermolecular π–π interaction between organic cations. A warm white light-emitting diode (LED) device with the color rendering index of 91.4% has been fabricated by combining the 440 nm LED chip, green-emitting Lu 3 Al 5 O 12 :Ce 3+ , and ( 1,3-dppH 2 ) 2 Cu 4 I 8 ∙H 2 O. This work provides a new design route towards 0D cuprous halide materials and will initiate more exploration of their intrinsic luminescence mechanism.
研究领域:
材料科学
·
光电
·
固态照明
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高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2013
·Vol. 23
·期 6
·1534-1539
·
IF 1.174
Yan Bianling,Zhou Xiaojun,Li Yuanyuan,Yin Fei,Zou Yang,Jiang Yinzhi,Wang Xing,Xie Jingli
A novel 3d–4f heterometallic coordination complex [Ce(H 2 O) 6 (CuL) 2 ]·NO 2 ·7H 2 O ( 1 ) (H 3 L = glycylglycine, N -[1-(2-hydroxy, phenyl)-propylidene]) was synthesized and characterized by IR, elemental analysis, TGA and single crystal X-ray diffraction. An octameric water cluster consisting of a planar tetrameric water ring and four dangling water molecules were observed in 1 . Variable-temperature magnetic data shows antiferromagnetic behavior for 1 .
研究领域:
化学
·
材料科学
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高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2022
·
IF 3.269
Ziyu Zhuang,Dongdong Li,Yanfei Fan,Dandan Gao,Dewen Zeng
The construction of a comprehensive thermodynamic model for boron-containing salt brine is important. However, the general lack of the solubility of H 3 BO 3 + salt + H 2 O ternary systems makes it difficult to determine model parameters involving boron species. Here, we systematically determined the solubility isotherms of the H 3 BO 3 + CsCl + H 2 O system at T = (273.15, 298.15, 323.15, 348.15 and 363.15) K. There are three solubility branches corresponding to H 3 BO 3(cr) , CsCl (cr) and a novel adduct in the system. The determined composition of the adduct is 2H 3 BO 3 ·3CsCl. Moreover, the single crystal structure of 2H 3 BO 3 ·3CsCl is solved, suggesting that H 3 BO 3 molecules keep it native plane-triangle structure, but the O atoms coordinate to the Cs ion. We modeled these ternary solubility isotherms using the Pitzer-Simonson-Clegg (PSC) model implemented in the ISLEC program. With the help of the model, a complete polythermal phase diagram of the system was constructed for the temperature range from 250 K to 373.15 K. The determined standard thermodynamic quantities of 2H 3 BO 3 ·3CsCl (cr) from the model are Δ f G m Θ = − 3182.26 kJ∙mol −1 , Δ f H m Θ = − 3496.19 kJ∙mol −1 , S m Θ = 485.85 J∙K −1 ∙mol −1 , C p , m Θ = 320 J∙K −1 ∙mol −1 , respectively.
研究领域:
化学
·
物理化学
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Jiayao Gao,Chen Chen,Linshan Wang,Zhenyu Wang,You Fu,Yaxin Li,Yinghang Kou,Zilong Liu,Yiming Wang,Hongbin Sun
Aluminum-water (Al-H2O) batteries, enabling on-demand high-purity hydrogen production and simultaneous power output, hold great promise for hydrogen energy and electrochemical energy storage applications. However, severe self-corrosion of aluminum anode and parasitic hydrogen evolution reaction (HER) in highly alkaline electrolytes hinder their practical deployment. This work proposes a novel organic-inorganic hybrid corrosion inhibitor comprising sodium 3-mercapto-1-propanesulfonate (MPS) and zinc oxide (ZnO). Combined experimental and computational investigations demonstrate that a dense, robust adsorption-deposition composite protective layer is formed on the anode surface via a "molecular bridging" synergistic mechanism, delivering a corrosion inhibition efficiency of 72.9%. In alkaline Al-H2O full-cell tests, the battery achieves 77.5% anode utilization, and a specific capacity of 2309 mAh g-1 at 20 mA cm-2. This work offers valuable guidance for designing high-performance hybrid corrosion inhibitors for Al anodes.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Chengfei Zhang,Pengze Zhang,Mingyuan Zhu
CuO-ZnO is a key catalyst widely used in catalytic processes such as dehydrogenation and hydrogenation. Hence, revealing the impact of H2O and H2 on the stability of CuO-ZnO catalysts is of critical importance. In this work, a CuO-ZnO/SiO2 catalyst with highly dispersed CuO-ZnO interface active sites was synthesized, and the structure-activity relationship and deactivation mechanism were systematically investigated using a model reaction (the cyclodehydrogenation of 1-amino-2-propanol to 2,5-dimethylpyrazine) that simultaneously generates H2O and H2. Under optimized reaction conditions (250 °C, space velocity: 1.5 h-1, and N2 flow rate: 8 mL/min), a 2,5-dimethylpyrazine yield of 68.1% was achieved over the 20%CuO-ZnO/SiO2-3:2 catalyst. The investigation into the deactivation mechanism reveals that Cu species agglomeration and carbon deposition are the primary reasons for the decline in activity. The roles of H2 and H2O in catalyst stability were found to be different: H2 suppressed the aggregation of metallic Cu0, while H2O enhanced stability by suppressing the formation of carbon deposits. Based on the understanding of the deactivation mechanism, catalyst regeneration was performed through air calcination, recovering the 2,5-dimethylpyrazine yield to 88.1% of the initial value. Overall, this work reveals the deactivation pathways and stabilization mechanisms of CuO-ZnO/SiO2 catalysts under reactive atmospheres containing H2 and H2O, offering theoretical guidance for industrial application and design of a highly stable CuO-ZnO catalyst.
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高影响因子
IONICS
·
2025
·
IF 2.6
Cai Kanghui,Hong Binsheng,Hu Xueling,Li Zhenkun,Su Jing,Lv Xiaoyan,Wen Yanxuan
MnPO 4 ∙H 2 O is an ideal precursor for the preparation of LiMnPO 4 . However, the instability of Mn 3+ in an aqueous solution necessitates the implementation of the existing preparation methods, which are carried out in ethanol and produce toxic gases such as NO and NO 2 . In this work, a radical-oxidation coupled phosphate stabilization strategy is proposed for synthesizing MnPO 4 ∙H 2 O in an aqueous solution. The strategy involves the initial oxidation of Mn 2+ to Mn 3+ by sulfate radicals, which are produced through the thermal activation of Na 2 S 2 O 8 . Subsequently, Mn 3+ is stabilized by H 3 PO 4 , leading to the formation of MnPO 4 ∙H 2 O. By implementing this strategy, the mesoporous MnPO 4 ∙H 2 O precursor can be readily obtained through a reaction at 90 °C for 5 h. Subsequently, the prepared LiMnPO 4 /C inherits the mesoporous structure of the MnPO 4 ∙H 2 O precursor, exhibiting excellent electrochemical performance. Specifically, the mesoporous LiMnPO 4 /C delivers an initial capacity of 115.8 mAh g −1 with a capacity retention of 83.1% after 100 cycles at 10 C. The enhanced performance is mainly attributed to the mesoporous structure, which facilitates electrolyte penetration, reduces interfacial charge transfer impedance, and accelerates Li + diffusion. The environmentally benign and scalable strategy presented here opens a new approach to the synthesis of high-performance LiMnPO 4 /C.
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