CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jingyun Zhang,Zhen Jia,Shitao Yu,Shiwei Liu,Lu Li,Congxia Xie,Qiong Wu,Youzheng Zhang,Hailong Yu,Yuxiang Liu,Jinhui Pang,Yue Liu
Controllable carbonyl group (C O) hydrogenation is the key to the transformation of furfural molecules into high-value furfuryl alcohol chemicals. Herein, a non-noble copper metal catalyst (Cu/MgO) was prepared for the efficient hydrogenation of furfural to furfuryl alcohol under mild conditions. At 383 K and 2 MPa H 2 , 99.9% conversion of furfural with 99.9% selectivity to furfuryl alcohol was achieved within 80 min while the turnover frequency (TOF) was 56.87 h −1 . The temperature of a reductive pretreatment can be used to tune the nature of the interfaces between reduced copper and the metal oxides present in copper-magnesium oxide catalysts. The valence copper species exhibited unique catalytic properties in the hydrogenation of furfural to furfuryl alcohol. Besides, the Cu/MgO-350 exhibited excellent stability and reusability without significant activity loss. These results were accounted for by the MgO alkaline interface contributing to the effective formation and high dispersion of different valence Cu species. The active site had strong adaptability to the adsorption of reactants and desorption of products, thus avoiding excessive hydrogenation of furfural. According to the analysis of the characterization data, furfural adsorption mainly existed in η 1 (O)-aldehyde binding mode which was consistent with the density functional theory (DFT) calculation. DFT calculations of the reaction process showed that the theoretical results favored the hydrogenation of furfural through a hydroxyalkyl intermediate rather than of an alkoxide intermediate.
研究领域:
催化化学
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材料科学
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理论计算
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产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2023
·
IF 9.8
Tan Li,Jing Su,Linjia Yin,Xiangkun Zhang,Cong Wang,Xinbao Li,Jing Zhang,Kaige Wang
A Cu-based catalyst was developed for one-step solvent-free synthesis of aviation biofuel from biomass-derived ketones, including acetone, cyclopentanone, cyclohexanone, and 2-pentanone. Under the optimal working conditions, the conversion rate of acetone, cyclopentanone, cyclohexanone and 2-pentanone of 100% can be achieved by using Cu/Al2O3. 79.7 c% maximum carbon yield of liquid hydrocarbons with 89.5% selectivity of aviation biofuel was obtained under the conditions of 1.0 MPa H2, 280 °C, and 2 h−1 WHSV. The effects of the calcination temperature on the acidity and basicity of the catalyst, as well as the valence and dispersion of Cu species, were investigated. Based on DFT calculations and in situ DRIFTS results, the preferred adsorption of carbonyl groups and efficient dissociation of hydrogen on Cu+ increased the local concentration of H and feedstock on the catalyst surface, accelerating the rate-determining step that predominated on Cu0. The synergistic effect of Cu0 and Cu+ enhanced the formation of aviation biofuel.
研究领域:
催化
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化学工程
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可再生能源
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材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Yong Liu,Zhao Yang,Jianlong Wang
In this study, a bimetallic Cu 0 /Zn 0 particles were prepared, characterized and used as Fenton-like catalyst for the degradation of sulfamethoxazole (SMX). The results showed that Cu 0 /Zn 0 particles were capable of converting O 2 to H 2 O 2 , O 2 − and OH radicals. In bimetallic Cu 0 /Zn 0 particles, Cu 0 /Zn 0 corrosion cells were formed through the direct contact of Zn 0 and Cu 0 , which not only accelerated the electron transfer from Zn 0 to O 2 , leading to the promotion of H 2 O 2 generation, but also enhanced the conversion of Cu 2+ to Cu + /Cu 0 , facilitating the catalytic decomposition of H 2 O 2 to produce O 2 − and OH radicals. SMX could be efficiently degraded in Cu 0 /Zn 0 -air system over a broad pH range from 3 to 9, the removal efficiency of SMX and TOC was 87.8% and 45.5%, respectively at following condition: SMX concentration, 20 mg/L; dosage of bimetallic Cu 0 /Zn 0 particles (mole ratio of Zn to Cu was 1:2), 2 g/L; air flow rate, 1.8 L/min; reaction temperature, 25℃ and without adjusting pH. The recycling use of bimetallic Cu 0 /Zn 0 particles leaded to the enhanced degradation of SMX due to the newly formed cuprous oxide (Cu 2 O), which could further catalytically activate O 2 . The quenching experiment showed that the concentration of dissolved oxygen could significantly affect the main reactive oxidant species (ROSs). Additionally, the intermediate products of SMX degradation were detected and a possible pathway of SMX degradation as well as the catalytic mechanism of Cu 0 /Zn 0 -air system were proposed.
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yuhe Bai,Qiangqiang Tao,Li Wang,Shuai Lu,Aixin Zhang,Kang Li,Ning Hu
A novel Cu 0 nanoparticle-anchored, magnetically separable spinel high-entropy catalyst ( Cu 0 NPs @ HEOs ) was synthesized via co-precipitation, freeze-drying, and high-temperature calcination for rapid catalytic degradation of sulfadiazine (SDZ) through H 2 O 2 activation. During the high-temperature calcination process, a fraction of Cu 0 nanoparticles precipitated and anchored on the catalyst surface, enhancing electron transfer at the interface while suppressing metal leaching. Cu 0 NPs @ HEOs system achieves a 99.34 % degradation rate for SDZ within 20 min—surpassing the 75.6 % degradation obtained using conventional medium- and low-entropy catalysts. Toxicity prediction software confirmed the low biotoxicity of degradation intermediates, ensuring environmental safety. The catalyst’s magnetic properties allowed for easy recovery using an external magnetic field, enabling reuse without performance degradation. Experimental characterization combined with density functional theory (DFT) calculations revealed that surface Cu sites acted as the primary active centers, effectively promoting H 2 O 2 adsorption and activation through electron transfer, accelerating ·OH generation. The main reactive species involved were ·OH, with minor contributions from O 2 – ·. Other metal sites provided electrons to sustain the high-entropy catalytic reaction. This study offers a new perspective on high-entropy material synthesis and highlights its potential in environmental remediation, especially for treating refractory organic pollutants.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
ChemPhotoChem
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2025
·
IF 3
Mengrong Zhang,Sha Ni,Zichao Yang,Min Zhang,Zhongjie Guan,Jianjun Yang
Graphical Cu-modified monoclinic TiO 2 nanoflowers with OVs (Cu 1 TB-1.5) promote the reactivity and selectivity of CO 2 reduction to CO under visible light. CO selectivity is 99.6%, and the cycling stability is excellent. The Cu 1 TB-1.5 facilitates the formation of the intermediate COOH* during the photocatalytic process, thus improving the yield and selectivity of CO. The photoreduction of CO 2 has attracted extensive attention as a promising solution to global warming. In this study, Cu-modified TiO 2 (B) (CuTB) nanoflowers with oxygen vacancies (OVs) are designed and synthesized via hydrothermal treatment and photodeposition to promote the reactivity and selectivity of CO 2 reduction to CO under visible light. The CO and CH 4 yields of sample Cu 1 TB-1.5 under visible light are 5.72 and 0.02 μmol g −1 h −1 , wherein the CO yield was 15.5 times that of sample TB; its selectivity is 99.6%, and the cycling stability is excellent. OVs can broaden the light absorption of TB to the visible light region, and Cu promotes photoinduced electron transfer from TB to the Cu species and act as an active center. The OVs and Cu can synergistically enhance charge separation, CO 2 adsorption, and CO 2 conversion. The Cu 1 TB-1.5 facilitates the formation of the intermediate COOH* during the photocatalytic process, thus improving the yield and selectivity of CO. This research provides a unique idea for the development of novel highly selective photocatalysts.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMISTRY
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2025
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IF 5.5
Changyan Guo,Yanqiu Ma,Yonghong Zhang,Jianghua Pei,Fangshu Han,Shuai Yang,Jide Wang
Comprehensive Summary Cu-BTC (BTC = 1,3,5-benzenetricarboxylic acid) framework faces environmental and scalability challenges in conventional synthesis due to energy-intensive processes, using toxic solvents and costly precursors, with nanoparticle integration further complicating production through multi-step procedures that degrade structural integrity. This study developed an innovative ambient-temperature synthesis of Cu-N coordinated Cu-BTC MOF containing dispersed Cu/Cu₂O nanoparticles using economical Cu 0 powder. The N-ligand-mediated oxidation and deprotonation simultaneously achieve: (1) incorporation of 5 nm nanoparticles, (2) in situ formation of catalytic Cu–N bonds, and (3) manifestation of multifunctional catalytic performance. The Cu/Cu₂O@Cu-BTC/N composite demonstrates outstanding catalytic activity, achieving high yields across multiple reactions: 91% in Knoevenagel condensation, 89% in Sonogashira coupling, 99% in Ullmann-type C–N coupling, and 97% in indole C2-acylation, along with exceptional photocatalytic hydrogen evolution performance (7.06 mmol·g –1 ·h –1 ). Notably, the synthetic protocol demonstrates excellent scalability, maintaining 90% yield at both 1 g and 10 g scales, thereby establishing a sustainable pathway for large-scale production of multifunctional MOF catalysts with promising applications in green chemistry and energy-related fields.
研究领域:
材料化学
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催化化学
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纳米材料
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绿色化学
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能源化学
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配位化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Yanping Dong,Xiqiang Tian,Jinhui An,Pengyu Xu,Xinrui Wei,Muhammad Zahid
Achieving high activity, superior selectivity, and durable performance remains challenging for pristine MOFs in heterogeneous hydrogenation catalysis. Herein, nitrogen-doped carbon-wrapped Cu@Cu 2 O/NC heterogeneous catalysts enriched with Cu 0 –Cu + interfacial sites were readily derived by calcining Cu-MOF under an air atmosphere. Comprehensive characterization was conducted to examine synthesis-induced variations in bulk crystallinity, surface chemistry, and catalytic activity for Cu-MOF-250, Cu-MOF-350, and Cu-MOF-450. Compared to its counterparts, the Cu-MOF-350 catalyst exhibited optimal performance in the preferential hydrogenation of noxious 4-nitrophenol (4-NP) to valued 4-aminophenol (4-AP), maintaining high activity for up to ten consecutive rounds. The enhanced catalytic hydrogenation efficiency of the Cu-MOF-350 catalyst is ascribed to its distinctive nanostructural features, which originate from the synergistic interplay between Cu and Cu 2 O species. In addition, the improved uniform distribution of Cu@Cu 2 O nanoparticles generates higher concentration of interfacial exposed reactive Cu 0 /Cu + sites on the Cu-MOF-350 surface, which are considered crucial for the promoted hydrogenation of 4-NP.
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DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 3
·576
·
IF 5.3
Jiaqi Li,Mengzhou Wang,Xu Zhao,Zitong Li,Yihui Niu,Sufeng Wang,Qina Sun
Iodine is a nuclide of crucial concern in radioactive waste management. Nanomaterials selectively adsorb iodine from water; however, the efficient application of nanomaterials in engineering still needs to be developed for radioactive wastewater deiodination.Artemiaegg shells possess large surface groups and connecting pores, providing a new biomaterial to remove contaminants. Based on theArtemiaegg shell-derived biochar (AES biochar) and in situ precipitation and reduction of cuprous, we synthesized a novel nanocomposite, namely porous biochar-confined nano-Cu2O/Cu0(C-Cu). The characterization of C-Cu confirmed that the nano-Cu2O/Cu0was dispersed in the pores of AES biochar, serving in the efficient and selective adsorption of iodide and iodate ions from water. The iodide ion removal by C-Cu when equilibrated for 40 min exhibited high removal efficiency over the wide pH range of 4 to 10. Remarkable selectivity towards both iodide and iodate ions of C-Cu was permitted against competing anions (Cl−/NO3−/SO42−) at high concentrations. The applicability of C-Cu was demonstrated by a packed column test with treated effluents of 1279 BV. The rapid and selective removal of iodide and iodate ions from water is attributed to nanoparticles confined on the AES biochar and pore-facilitated mass transfer. Combining the advantages of the porous biochar and nano-Cu2O/Cu0, the use of C-Cu offers a promising method of iodine removal from water in engineering applications.Keywords:nanoparticles;cuprous;biochar;Artemia;iodide ion;iodate ion
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
ACS Catalysis
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2026
·
IF 13.6
Shi Zhanghan,Duan Fangyu,Liu Yafei,Zhang Xianwang,Song Guoquan,Yang Xiaomeng,Ma Qianli,Zhang Zongwu,Wu Dan,Xu Chunbao,Zhang Yongsheng
Cascade catalytic upgrading of biomass-derived furanic compounds to high-value cyclopentanone (CPO) and cyclopentanol (CPL) over metal–acid bifunctional catalysts has attracted considerable attention in sustainable chemistry. However, conventional bifunctional catalysts exhibit insufficient synergistic effects, primarily due to the lack of flexibility in tuning the ratio of acidic to hydrogenative active sites. Herein, we demonstrate that halogen (Br and Cl) modification of supported Cu catalysts significantly enhances both activity and selectivity in the aqueous-phase hydrogenative rearrangement of furfuryl alcohol (FOL), achieving a CPO yield of 94.4% and a CPL yield of 94.6%, respectively. Extensive characterizations reveal that the electronegative Br and Cl adatoms effectively modulate the electronic state of Cu nanoparticles, facilitating the formation of Lewis acidic Cu + sites on the catalyst surface. Mechanistic investigations disclose that Cu + sites mediate the rearrangement of FOL to 4-hydroxy-2-cyclopentenone (4-HCP), while adjacent Cu 0 sites catalyze the hydrogenation of 4-HCP to CPO, followed by its subsequent hydrogenation to CPL. Different binding strengths between Cu and halogens (I > Br > Cl) allow the regulation of the Cu + /Cu 0 ratio on the Cu surface, which in turn provides an effective way to control the reaction pathway. The developed halogen modification strategy not only offers great potential for the upgrading of biomass-derived furanics to cyclopentane derivatives but also presents a versatile strategy for regulating the surface Lewis acidity of metal catalysts, which is crucial for metal–acid bifunctional catalysis.
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Wen-Jing Yi,Jingyi Yang,Yongzhen Gao,Xiaotian Zhou,Wenlei Zhang,Meng Zhang,Zhongyi Liu
Copper catalysts have garnered considerable interest as promising active metals for upgrading biomass resources, especially in selective furfural (FF) hydrogenation reaction. However, effectively enhancing the interactions between active metals and supports while providing abundant surface reaction sites remains enormous challenge to improve catalytic performance. Herein, we present a unique hydrotalcite-derived Cu-based catalyst featuring well-dispersed Cu 0 /Cu + nanodots towards selectively hydrogenated FF to furfuryl alcohol (FA). Impressively, the optimized CuMg 3 Al-R catalyst exhibits the exceptional hydrogenation performance, achieving almost 100 % FF conversion and 99.3 % FA selectivity. Comprehensive studies reveal that the small sized Cu species with well dispersion, the synergistic effect of Cu 0 and Cu + , combined with the selective adsorption and activation of C O groups jointly contribute to the enhanced catalytic performance. This work offers a promising strategy to rationally design well-dispersed Cu species for the selective hydrogenation of C O groups, which holds great significance for biomass-related hydrogenation reaction.
研究领域:
催化化学
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生物质能
·
材料科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jiayao Luo,Ji Zhang,Jie Chen,Shan Xiong,Yifan Li,Xinyu Li,Lu Fan
The large-scale accumulation of red mud, a waste by-product from aluminum production, presents critical environmental challenges and opportunities for resource valorization. In this study, a Cu x O/RM composite was synthesized via wetness impregnation and applied for rapid and selective NO 3 − -N reduction. Complete NO 3 − -N removal was achieved within 9 min under mild conditions (25 °C, initial pH 7.0, 30 mg(N)/L), with NO 2 − -N as the primary intermediate. With addition of NH 2 SO 3 H, NO 2 − -N was further reduced to N 2 gas within 3 min. Notably, the Cu x O/RM system maintained high NO 3 − -N removal efficiency even at lower temperatures (5–15 °C) and across a wide pH range (3−11), demonstrating excellent adaptability to real-world wastewater conditions. Stability and reusability tests showed that the composite retained over 95 % removal efficiency after five reuse cycles. Mechanistic investigations revealed that in-situ generated Cu 0 and H 2 -mediated pathways synergistically enhanced NO 3 − -N reduction performance. This study not only provides an effective and sustainable strategy for NO 3 − -N remediation but also offers a promising route for the large-scale valorization of red mud.
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Zhuogen Li,Gangqiang Zhu,Weibin Zhang,Lujun Zhu,Baowei Cao,Jianzhi Gao,Xianjin Shi,Yu Huang,Peng Liu,Mirabbos Hojamberdiev
In recent years, metal–semiconductor heterojunctions have been intensively researched in the field of photocatalysis due to the effective spatial separation of photo-induced electron-hole pairs. Here, the dual-functional copper (Cu 0 /Cu 2+ )-modified SrTiO 3-δ nanosheets (Cu/STCO) are successfully synthesized by a two-step route. First, Cu 2+ -doped SrTiO 3-δ (STCO) nanosheets are synthesized by a hydrothermal method and then Cu 0 nanoparticles (NPs) are in situ formed from the STCO under H 2 atmosphere at 500 °C. The optimized ratio 6 %-Cu/STCO photocatalyst exhibits the best photothermal catalytic performance for CO 2 reduction reaction (CO 2 RR) and H 2 evolution performance. The detailed characterization demonstrate that the Cu 2+ dopant extend the light absorption range and the in situ generated Cu 0 NPs effectively improve the separation ability of photogenerated charge carriers by forming the Schottky contact with STCO. The excited localized surface plasmon resonance (LSPR) effect of metallic Cu 0 in Cu/STCO shows a considerable catalysis performance even under 600 nm monochromatic light irradiation. The density functional theory (DFT) calculations suggest that the Cu/STCO diminishes the barrier of the rate-determining steps of the CO 2 RR and H 2 evolution thus perform the outstanding catalysis ability in two filed. This work presents the synergistic effect of Cu 0 and Cu 2+ on enhancing the photothermal catalytic performance for CO 2 RR and H 2 evolution and offers a novel strategy to synthesize the metal–semiconductor nanostructures for efficient harnessing of solar energy into fuel.
研究领域:
材料科学
·
能源化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）