CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Qin Wu,Chi Fan,Ya Wang,Xiaoping Chen,Guimin Wang,Zhengxing Qin,Svetlana Mintova,Junhua Li,Jianjun Chen
The reduction of NO x emission during the cold start period of diesel vehicles requires special attention in accordance with the emission regulations. In this work, the direct incorporation of cerium and copper in SAPO-18 catalyst with AEI type framework structure (CuCe-SAPO-18) resulting in a substantial enhancement of the performance in the low-temperature NH 3 -SCR reaction (<200 ℃). A small amount of cerium (0.13–0.31 wt%) broadened the reaction temperature range of use and increased the hydrothermal stability of the catalyst considerably. The cerium species was introduced in the ion-exchange sites of Cu-SAPO-18 in the form of Ce 3+ ions even with high loading (3.15 wt%). The Ce 3+ ions were found to affect the distribution of silicon and aluminum atom coordination ( 29 Si NMR, 27 Al MAS NMR) in the AEI-type skeleton structure leading to an increase of both the amount of active Cu 2+ species and the acidity of the CuCe-SAPO-18 catalysts that are beneficial for the NH 3 -SCR reaction.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2020
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IF 9.038
Junlei Zhang,Wei Zhao,Shanshan Wu,Renli Yin,Mingshan Zhu
Advanced oxidation processes (AOPs) based on heterogeneous catalytic activated peroxymonosulfate (PMS) have been becoming alternatives to conventional wastewater treatment technologies to directly degrade chemical contaminants. To build dual/multi redox cycles of different metal ions may be an effective means for better PMS activation. Herein, this study designed Mn 3 O 4 /CuBi 2 O 4 with dual redox cycles of Mn(III)/Mn(IV) and Cu(I)/Cu(II) to activate PMS for efficiently decomposing and mineralizing diclofenac sodium (DCF). Under optimal reaction conditions, DCF (50 mg/L) was degraded totally within 10 min, and TOC removal rate reached up to 74.3%. The possible mechanism of PMS activation by Mn 3 O 4 /CuBi 2 O 4 was proposed, wherein dual redox cycles of Mn(III)/Mn(IV) and Cu(I)/Cu(II) on Mn 3 O 4 /CuBi 2 O 4 effectively facilitated PMS activation to generate · O 2 − , 1 O 2 , SO 4 · − and · OH, which was responsible for DCF degradation. Moreover, combined with degraded products detected by high resolution liquid chromatography coupled to mass spectrometry and corresponding toxic assessment results, the possible degradation pathways of DCF were proposed and the relative toxicity of degraded products was evaluated. This work may be useful for developing stronger heterogeneous activators of PMS to construct more efficient AOPs for purifying wastewater.
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CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Lei Liu,Chunjiang Han,Guofang Ding,Meiying Yu,Yunfei Li,Shengnan Liu,Yunxuan Xie,Jia Liu
Bimetallic CuCo-doped graphene-like carbon nanosheets (CuCo@GCNs) were synthesized via a facile and efficient process using agarose as carbon templates to activate peroxymonosulfate (PMS) for tetracycline (TC) degradation. In this study, CuCo@GCNs/PMS system exhibited excellent TC removal efficiency (0.182 min −1 ), which was unaffected by various water matrices and applicable to a wide pH range (3.44–8.44). Radicals (SO 4 •− , • OH, and O 2 •− ) and non-radical ( 1 O 2 ) pathways collectively contributed to catalytic TC oxidation based on quenching experiments and electron paramagnetic resonance (EPR) analysis. Density functional theory (DFT) calculations revealed that the mechanism of PMS molecules activated on the surface of CuCo@GCNs, in which CoO provided more catalytic sites while Cu 2 O further enhanced electron transfer. Moreover, the synergistic effect of CuCo bimetal could accelerate redox cycles of Cu + /Cu 2+ and Co 2+ /Co 3+ , inducing the generation of abundant oxygen vacancies (O V s), thus enhancing PMS activation performance. Three potential TC degradation pathways were proposed according to fifteen possible intermediates detected by liquid chromatography-mass spectrometry (LC-MS). In brief, this work provides an efficient CuCo@GCNs heterogeneous catalyst and a new insight into PMS activation, which extends the application of bimetallic materials for environmental remediation.
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Journal of Energy Chemistry
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2026
·
IF 15.6
Xue Ye,Yangzhou Xu,Peipei Zhang,Dongwang Zhu,Zhicheng Chen,Yudong Xia,Fulin Yang,Xinhua Gao,Jie Li
CO 2 hydrogenation to methanol is one of the most promising pathways for emission reduction. Unlike traditional synthesis gas (CO + H 2 ) to methanol, a major challenge is that the activation of inert CO 2 at high temperature will induce the reverse water-gas shift (RWGS) reaction to generate CO, thereby reducing the methanol yield. In this research, a novel catalyst Cu 7 Zn 3 Cr 0.3 was synthesized by the carbon microsphere-assisted sol-gel method, which remarkably achieved a maximum methanol space-time yield of 345.1 g kg cat −1 h −1 under mild conditions (200 °C, 3.0 MPa, and 21600 mL g cat −1 h −1 ). Characterizations combined with theoretical simulations show that Cr doping can affect the crystal structure of ZnO, resulting in the formation of more oxygen vacancies (O V s), and induce Cu to form a stable Cu 0 -O V -Cu + active center at the interface. This active structure efficiently enhances the adsorption and activation of CO 2 , while changing the reaction path to inhibit the production of CO. The results indicate that there is a clear linear relationship between the Cu + and O V s concentration and methanol yield, which could provide experimental references for the development of high-performance catalysts for CO 2 methanol production.
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Journal of Environmental Chemical Engineering
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2020
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IF 4.3
Xiunan Cai,Qingwen Huang,Zongxian Hong,Yanjuan Zhang,Huayu Hu,Zuqiang Huang,Jing Liang,Yuben Qin
To harmlessly treat and effectively utilize manganese residue (MR), a novel MR-based catalyst, mechanical activation (MA)-pretreated MR-derived Fe-Cu@SiO 2 /starch-derived carbon (MAMR-Fe-Cu@SiO 2 /SC) composite, was prepared through a facial method by reduction roasting of MA-pretreated precursors. The prepared catalysts were systematically characterized to explore the formation and catalytic activities. The results showed that the formation of CuFeO 2 anchored on the MR could be ascribed to the close contact and mutual diffusion between solid components caused by MA, and the higher specific surface area, strong interaction of Fe-Cu and more accessible reactive sites of MAMR-Fe-Cu@SiO 2 /SC contributed to the greater catalytic activity in photo-Fenton system for tetracycline (TC) degradation. The MAMR-Fe-Cu@SiO 2 /SC catalyst showed excellent degradation efficiency at pH range of 2.5–9.5, and about 100% TC removal in 40 min and 85.6% TOC removal in 120 min could be obtained. The MAMR-Fe-Cu@SiO 2 /SC exhibited the highest apparent reaction rate constant of 0.066 min –1 , being about 4.0, 2.8, and 2.2 times that for the catalyst of Cu/SC, MAMR-Fe 3 O 4 @SiO 2 /SC and MR-Fe-Cu@SiO 2 /SC, respectively. This enhancement could be attributed to that anchored Cu could accelerate the charge transfer, and short the reaction pathway between photo and Fenton reaction. XPS results showed that the presence of Fe 2+ -Fe 3+ , Mn 2+ -Mn 3+ and Cu + -Cu 2+ cycles were responsible for the radical generation on the surface of the catalyst. This environmentally-friendly method for the preparation of composite catalysts may provide new insights for harmless fixed treatment and valorization of MR and large-scale production of catalyst.
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JOURNAL OF COORDINATION CHEMISTRY
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2021
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IF 1.751
Yan Zhao,Xianying Duan,Guangguang Zhang,Meilin Wei
Two proton-conductive and luminescent organic-inorganic hybrid materials, {[Cu(II)(bhmbpy)(H2O)(Cl)0.5(CH3CN)]2[PW(VI)10W(V)2O39]}·4H2O(1) and {H2[Cu(I)(bhmbpy)2(Cl)Cu(I)(bhmbpy)2][PW12O40]}·7H2O (2) (where bhmbpy is bis(hydroxymethyl)-2,2′-bipyridine), were synthesized at room temperature. The two products were characterized by infrared spectroscopy, X-ray single-crystal diffraction, X-ray powder diffraction, elemental and thermogravimetric analyses. The proton conductivities and luminescence of 1 and 2 were studied by using alternating-current impedance spectroscopy and luminescence spectroscopy, respectively. X-ray diffraction analysis revealed that 1 includes a decorated polyanion chain {[Cu(II)(bhmbpy)(H2O)(Cl)0.5(CH3CN)]2[PW(VI)10W(V)2O39]}n and forms a three-dimensional network structure depending on short Cl…Cl contacts and hydrogen-bonding interactions. X-ray diffraction analysis revealed that 2 includes a butterfly-like bi-nuclear copper cluster unit with a Cl-bridge, [Cu(I)(bhmbpy)2(Cl)Cu(I)(bhmbpy)2]+, and forms a three-dimensional network structure depending on hydrogen-bonding interactions. [PW12O40]3– anions fill in the network based on hydrogen-bonding and electrostatic interactions. In them, the bhmbpy acts as a bidentate nitrogen donor ligand in the chelating fashion to coordinate with the Cu(II) center in 1 and the Cu(I) center in 2. The bhmbpy in 2 successfully constrains the Cu(I) within a rigid environment in a tetragonal-pyramidal geometry. The two compounds exhibit good proton conductivity (10−4 S·cm−1) at 100 °C in the relative humidity range 35–98%. Their luminescence behaviors in the solid state at room temperature have also been investigated. Upon excitation at 384 nm, 1 exhibits three emission peaks centered at 439, 507 and 566 nm. When excited at 364 nm, 2 displays three emission peaks centered at 443, 501 and 553 nm.
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Science of Advanced Materials
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2018
·Vol. 10
·期 10
·1381-1388
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IF 1.318
Yao Shujuan,Li Qiancheng,Kong Ningning,Li Chao,Wei Mingming,Song Ruru,Ren Xiaozhen,Pu Xipeng,Li Wenzhi
We presented facile synthesis of Cu3–x
Zn
x
SnS4 composites (CZTSs, 0 ≤ x ≤ 3) with variety morphologies via simple one-pot hydrothermal process without hazardous chemicals, simply by varying initial precursor Cu/(Zn +
Sn) concentration ratio. The influence of initial Cu/(Zn+Sn) concentration ratio on the microstructures and properties of composites was investigated. The morphological, structural, and optical properties of the samples were characterized by field-emission scanning and transmission electron
microscopes, X-ray diffraction, N2 adsorption–desorption, and UV-Vis diffuse reflectance. The photocatalytic activity of the samples was studied using visible light irradiation of rhodamine B. Benefiting from the initial precursor Cu/(Zn+Sn) concentration, the as-prepared
3D hierarchical carnation-flowerlike CZTSs with high initial zinc concentration exhibit superior adsorption capability and much higher photocatalytic activity than that with low initial zinc concentration. The possible degradation mechanism of RhB was proposed.
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CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Lijun Chen,Chenguang Wang,Guozhao Liu,Guanwen Su,Leping Dang,Hongyuan Wei
Rational utilization of the surface charge property of components is an effective method to prepare heterojunction. The surface of g-C 3 N 4 nanosheets (CNs) and black phosphorous nanosheets (BPs) both exhibit negative charge, which would produce repulsive force to hinder them from approaching each other. Herein, non-noble and low-toxic Cu(II) was selected to harmonize the CNs and BPs together under the interaction of surface charges, and the Cu(II) was reduced in situ to Cu with good conductivity, obtaining the sandwich-like product BPs/Cu/CNs with tight interface and high separation efficiency of photogenerated carriers. The composites exhibited attractive degradation performance for various pollutants under visible light, especially, 95.3 % of ciprofloxacin (10 mg/L, 200 mL) was removed in 60 min with 50 mg of 6BPs/4Cu/CNs as photocatalyst, and the removal ratio can still reach 87.4 % after the fifth reuse with negligible leaching of Cu ions. An unconventional type-II band structure was built in the BPs/Cu/CNs under the drive of internal electric field and mutual attraction of opposite charges, in which the e - from CB of BPs transferred to Cu and then combined with the h + from VB of CNs, leaving the e - from CB of CNs and h + from VB of BPs still work. Despite the same result to that of typical type-II band structure of BPs/CNs, the flow of photogenerated carriers in the BPs/Cu/CNs was more favorable in thermodynamics.
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2026
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IF 3.1
Sun Shuze,Ma Xuefang,Wang Qingtao
Halide solid electrolytes have emerged as highly attractive electrolyte materials owing to their excellent ionic conductivity and high oxidation potential. In this work, low-cost CuCl is employed as a dopant, and Cu⁺-doped Li₃InCl₆ is prepared via ball milling, yielding a series of novel Li₃₋ ₓ Cu ₓ InCl₆ (0 ≤ x ≤ 0.4) electrolytes. Cu⁺ doping modifies the crystal structure and regulates the ionic conductivity of the material. Among them, Li₂.₉Cu₀.₁InCl₆ exhibits a lower activation energy and achieves a room-temperature ionic conductivity of 1.04 mS cm⁻¹. Cu⁺ doping enhances the air stability of Li₃InCl₆ and mitigates the degradation of ionic conductivity after air exposure. Furthermore, Cu⁺ doping reduces surface cracks, improves the deformability of the material, and lowers interfacial resistance. All-solid-state batteries using Li₂.₉Cu₀.₁InCl₆ as the electrolyte display superior capacity and cycling performance compared to those with pristine Li₃InCl₆. This work demonstrates that Cu⁺ doping is an effective strategy to boost ionic conductivity, improve air stability, and enhance the electrochemical performance of Li₃InCl₆.
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.3
Shiyu Huang,Yinze Yang,Yan Du,Pengxiao Wei,Yafei Zhao,Huishan Shang,Dan Wang,Dongyang Li,Bing Zhang
A bifunctional Cu/CeO2/halloysite catalyst was rationally constructed via strong electrostatic adsorption to enable switchable conversion of furfural into either furfuryl alcohol or isopropyl furfuryl ether. Highly dispersed Cu nanoparticles are anchored on CeO2 nanoislands supported by acid-etched halloysite nanotubes, creating a unique “support–adjuvant–active site” synergy. This architecture facilitates H2 activation and tandem hydrogenation–etherification, allowing precise temperature-controlled pathway selection. Under mild conditions, furfural hydrogenation to furfuryl alcohol proceeds via a low-energy barrier (0.9 eV) with a stable intermediate, whereas etherification requires overcoming a significant barrier (1.6 eV), becoming favorable only at elevated temperatures. In situ FTIR, kinetic studies, and DFT calculations reveal the mechanistic origin of this selectivity. The catalyst displays high activity, tunable selectivity, and robust recyclability, providing a versatile strategy for controlling reaction pathways in the valorization of biomass-derived platform molecules.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Qing Huang,Chen-dong Ling,Yan-li Zhang,Wen-feng Zhuge,Cui-zhong Zhang,Jin-yun Peng,Chao-guang Li
Considering the crucial role of riboflavin in human physiological functions, developing a rapid and sensitive detection method is essential in fields such as food and drug analysis. Electrochemical sensing is a powerful method for the determination of riboflavin. Herein, in this study, metal organic framework (MOF) microflower Cu-TCPP was prepared by solvothermal method using trifluoroacetic acid (TFA) as the modulator and polyvinylpyrrolidone (PVP) as the structural guide. Then followed by the fabrication of a novel electrochemical sensor for riboflavin detection. The microflower-like morphology of Cu-TCPP provided numerous active sites for riboflavin oxidation. Meanwhile, electrochemical results demonstrated that the Cu-TCPP enhanced the electron transfer efficiency and electroactive surface area of GCE, exhibiting excellent catalytic performance. Under optimized detection conditions, square wave voltammetry (SWV) test showed that the Cu-TCPP sensor exhibited a linear range for riboflavin of 1.00 × 10 −8 to 9.91 × 10 −5 M, with a low limit of detection (LOD) (1.70 × 10 −9 M) (S/N = 3). The sensor possessed good selectivity, excellent anti-interference capability, and outstanding stability. Additionally, the sensor was successfully employed for riboflavin detection in real samples, and the spiked recovery rate ranged from 98.85% to 102.86%, indicating its significant application value in real sample analysis.
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Green Energy & Environment
·
2026
·
IF 16.7
Xiangyu Guo,Changxue Xie,Xinyao Dong,Han Xiao,Huiye Wei,Kaidi Mao,Tongan Yan,Yunpan Ying,Huina Wang,Chongli Zhong
Highly c-oriented Cu-TCPP ultrathin membrane was prepared through in-situ conversion method. • Green solvents and minimal amount of ligand were used in membrane preparation process. • The membrane can efficiently discriminate linear molecules from non-linear and non-planar molecules. • The shape-based separation mechanism was verified by DFT calculation. Efficient separation of molecules with similar molecular weights is highly demanded in chemical and pharmaceutical industries, yet still hard to achieve with traditional polymer-based membranes. Metal-organic framework (MOF) membranes, especially ultrathin two-dimensional (2D) MOF membranes, offer a good opportunity for realizing these separations. However, current 2D MOF membranes are mainly prepared through the deposition method, which can bring uncertainty to the pore channels, compromising the separation ability. This work reports the preparation of a highly c-oriented ultrathin Cu-TCPP membrane through an electrostatic-assisted in-situ oriented transformation strategy using electrostatically adsorbed copper hydroxide nanostrands as a precursor layer. The resultant membrane has explicit transport channel to be the pores of Cu-TCPP, which enables the efficient discrimination of linear molecules from non-linear and non-planar molecules with similar and even lower molecular weights. Both the experimental work and density functional theory calculations confirm the sieving effect of the Cu-TCPP membrane towards two model molecules (methyl orange and hematoxylin). This work provides a paradigm for fully utilizing the potential of MOF membranes in the precise separation of molecules with similar molecular weights. Effective nanofiltration separation of molecules with similar molecular weights based on steric shape difference is enabled by the ultrathin c-oriented Cu-TCPP membrane prepared through a green and facile electrostatic assisted in-situ conversion strategy Download: Download high-res image (321KB) Download: Download full-size image
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