PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Yuan Chen,Dongdong Jia,Yu Gao,Wang Yuan,Yongyue Sun
To develop an efficient bifunctional material for bisphenol A (BPA) removal, a nitrogen-rich hierarchical porous Cu x @N-CM composite was synthesized by pyrolyzing Cu@ZIF-8 encapsulated with dicyandiamide (DCD). DCD introduced more pyridinic N, graphitic N, and Cu-N x active sites, and enhanced the material’s surface area and pore size. This unique structure endows the material with both superior adsorption capacity and peroxymonosulfate (PMS) activation ability, enabling efficient BPA removal from water. Specifically, after adsorption enrichment, 0.1 g L −1 of Cu x @N-CM can remove 75 % of BPA (20 mg L −1 ). Subsequent addition of 0.1 mmol L −1 PMS achieves complete BPA removal within 15 min. Furthermore, this material and process effectively minimize PMS consumption, exhibit a broad pH application range, and good cycling stability. Mechanistic studies show that adsorption occurs through pore filling, hydrophobic interactions, π-π electron donor-acceptor (EDA) interactions, and complexation. PMS activation is driven by radical and non-radical synergies. In addition, the adsorption active sites and PMS activation sites do not overlap, and the adsorption process prolongs the residence time of pollutants on the catalyst surface, thereby promoting the degradation process. This study provides valuable insights into designing catalysts for removing high-concentration, refractory organic pollutants from water.
研究领域:
环境科学
·
材料科学
·
化学工程
·
水处理技术
·
催化
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Chemistry
·
2025
·
IF 4.2
Chen Yang,Yuanyuan Chen,Zhimin He,Rong Li,Xinglong Gou
The electrochemical nitrate reduction reaction (NITRR) offers a sustainable route for ammonia synthesis and environmental remediation but faces challenges such as sluggish kinetics and competing hydrogen evolution. This study aims to address these limitations by designing a Cu/molybdenum phosphide (MoP) heterostructure catalyst through one-pot calcination, which integrates Cu nanoparticles with MoP nanograins. Structural and electronic analyses confirm the formation of intimate Cu–MoP interfaces, where charge redistribution polarizes Cu to an electron-deficient state (Cuδ+) and enriches MoP with electrons. This configuration enhances nitrate adsorption on Cuδ+, while MoP efficiently supplies protons via accelerated water dissociation. The Cu/MoP catalyst achieves a record-high NH3 Faradaic efficiency (FE) of 98.93% and a yield rate of 30.72 mmol h−1 cm−2 at −0.5 V (vs. RHE), outperforming isolated Cu or MoP. When deployed in a Zn-nitrate battery, the composite cathode delivers a peak power density of 12.97 mW cm−2. This work provides a promising solution to the insufficient active hydrogen supply and poor NH3 conversion efficiency of Cu-based nitrate reduction catalysts.
研究领域:
电化学
·
材料科学
·
环境科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Chen Chen,Jianhao Qiu,Guanglu Xia,Lu Zhang,Yixin Li,Biyao Fang,Meng Liu,Jianfeng Yao
Utilizing metal–organic frameworks as templates to synthesize photocatalysts has garnered increasing attention thanks to their substantial advantages. In this study, Cu-doped ZnIn 2 S 4 with hollow tubular structures was ingeniously synthesized using MIL-68-NH 2 as a template for photocatalytic H 2 O 2 production in ambient air and pure water under visible light. The hollow tubular structures promote light penetration and reflection, furnish substantial accessible reactive sites and accelerate the diffusion of reactants and products. Cu doping notably varies the band configuration of ZnIn 2 S 4 , resulting in a narrower bandgap and a lower conduction band potential. Their cooperative effects enable a respectable H 2 O 2 production from oxygen reduction reactions. The hollow tubular ZnIn 2 S 4 and corresponding Cu-doped counterpart achieved high H 2 O 2 yields of 1153 and 1616 μmol·L −1 , respectively, 3.6 and 5.1 times-increase compared with that of ordinary ZnIn 2 S 4 prepared without MIL-68-NH 2 . This work would provide a new perspective on ZnIn 2 S 4 -based photocatalysts and provoke the study on the green synthesis of H 2 O 2 .
研究领域:
光催化
·
纳米材料
·
环境化学
·
材料科学
·
绿色化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Yuanyuan Zhang,Jingchen Hao,Zhenyu Wang,Jiahao Cui,Yongfang Rao,Wei Yan
This study prepared Cu-doped ZnFe₂O₄ (Cu-ZFO) for peroxymonosulfate (PMS) activation, achieving 94% primidone (PMD) removal in 30 min, much higher than ZnFe₂O₄ (20%) due to the introduction of oxygen vacancies and Cu-enhanced Fe catalytic activity. Kinetic analysis revealed reaction orders of 1.25, 1.2, and 0.22 with respect to Cu-ZFO, PMS, and PMD, respectively. Electron transfer pathway (ETP) and free radical oxidation were believed to be involved in the degradation of various organic contaminants in Cu-ZFO/PMS system under neutral conditions through radicals quenching experiments, EPR measurements, electrochemical measurements, and Density functional theory (DFT) calculations. The dominant oxidation pathway for organic contaminants is dependent on their molecular structure and the solution pH. This study provides new insights into PMS activation mechanisms and signals attention to researchers and engineers about the potential influence of molecular structure and pH on oxidation pathways of organics during wastewater treatment using metal oxide-activated PMS.
研究领域:
环境化学
·
材料科学
·
催化化学
·
水处理技术
·
物理化学
·
环境工程
·
纳米材料应用
✓ 已验证
产品关联
DOI
高影响因子
Polymer Chemistry
·
2021
·Vol. 12
·期 30
·4347-4358
·
IF 5.582
Junnan He,Nan Zheng,Ming Li,YuBin Zheng,Wangze Song
Multicomponent polymerization has emerged as a promising strategy to develop functional polymers with versatile structures. In this work, a Cu-catalyzed four-component polymerization was developed using diynes, sulfonyl azides, nucleophiles, and a variety of electrophiles including alkyl glyoxylates, nitroalkenes, and Morita–Baylis–Hillman adducts to successfully synthesize a library of α-functionalized poly(N-sulfonylimidates)s with a wide substrate scope and high molecular weights (up to 20 000 g mol−1) in high yields (up to 86%). Such α-functionalized poly(N-sulfonylimidates)s could be further post-modified or utilized for the design of multi-functional and biodegradable polymers.
研究领域:
高分子化学
·
材料科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 12
·期 2
·1218-1232
·
IF 11.9
Zi-Yang Zhang,Hao Tian,Han Jiao,Xin Wang,Lei Bian,Yuan Liu,Nithima Khaorapapong,Yusuke Yamauchi,Zhong-Li Wang
The electrochemical CO2 reduction reaction (CO2RR) for high value-added multi-carbon product (C2+) production over copper oxide-based catalysts is an important way to realize the carbon cycle. However, developing effective reaction interfaces and microenvironments to improve the Faraday efficiency (FE) and current density of C2+ remains a major challenge. Herein, we construct Cu0–Cu+–NH2 composite interfaces with the assistance of SiO2. Using Cu2O nanoparticles as a model catalyst, a layer of porous SiO2 is first coated on the surface of the particles, and then, a silane coupling agent containing –NH2 is bonded on the surface of SiO2. The strong interaction between SiO2 and Cu2O at the interface induces the oxidation effect of low valent Cu, and even under the CO2RR, part of Cu+ is reduced to Cu0 and part of Cu+ still maintains positive valence, forming the interface of Cu0–Cu+. SiO2 also acts as a bridge between copper species and –NH2 to create a Cu catalyst–NH2 group interface. With the help of the synergistic effect of the composite interfaces, the optimized Cu2O@SiO2–NH2 catalyst achieves a FE of 81.2% for C2+ products with a current density of 292 mA cm−2 at −1.7 V versus a reversible hydrogen electrode. In situ Raman and attenuate total reflectance-infrared absorption spectroscopy spectra show that the interaction between surface –NH2 and CO2 molecules enhances the adsorption and activation process of CO2 and promotes the formation of CO intermediates (*CO). On the Cu0–Cu+ interface, the C–C coupling process between *CO is accelerated, and the two interfaces synergistically promote the generation of C2+ products. This work provides a new strategy for constructing composite interfaces to improve the CO2RR to C2+ products.
研究领域:
电化学
·
材料科学
·
催化
·
可持续能源
✓ 已验证
DOI
高影响因子
Catalysis Science & Technology
·
2024
·
IF 4.4
Bin Guan,Junyan Chen,Zhongqi Zhuang,Lei Zhu,Zeren Ma,Xuehan Hu,Chenyu Zhu,Sikai Zhao,Kaiyou Shu,Hongtao Dang,Zhen Huang
As a significant technology of CO2 utilization, artificial CO2 photoreduction has received more and more attention. Herein, g-C3N4 catalysts modified with Bi and/or Cu for CO2 photothermal reduction were prepared by solvothermal synthesis and impregnation methods. Performance evaluation and physicochemical and photo- and thermochemical characterization indicated that Bi and Cu modification effectively enhanced the photo-absorption properties of g-C3N4 catalysts, improving charge transfer efficiency and catalytic performance. Compared with single-metal modification, Bi and Cu co-modification showed a narrower bandgap and more excellent light and CO2 absorption capacity, suggesting a certain synergistic effect of Bi and Cu co-modification. The alteration of the light absorption properties may be related to the surface plasmon effect of Bi and Cu, and the co-loading of Bi and Cu can exacerbate the effect, which can effectively enhance the photoresponsivity of the catalysts, leading to higher catalytic performance.
研究领域:
催化
·
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2024
·
IF 2.1
Ping Jiang,Wan Liu,Jing Li,Yuan Gao
Straw and chitosan are underutilized raw materials, which could make a significant contribution to sustainable development. Herein, a novel chitosan-based hydrogel incorporating rice straw cellulose micro-fibrils (SCMF) was prepared to effectively remove Cu(II). FTIR and SEM showed that straw cellulose-g-poly (acrylic acid)/chitosan-g-poly (acrylic acid) interpenetrating polymer networks were prepared and the hydrogel SCCH had a 3D porous structure after cross-linking with AA. The swelling properties of SCCH were studied and compared in various pH solution. The results indicated that SCCH replayed pH responsibility, which had the largest and smallest swelling capacity at pH9.18 and pH4.00 respectively. The pseudo-second-order kinetic model can be effectively used to evaluate swelling kinetics of hydrogels. The effects of contact time and initial concentration on Cu(II) ion removal were investigated. The equilibrium adsorption capacity (Qe) was 209.2 mg/g and the obtained results indicated that the adsorption kinetics conformed to the pseudo-second-order. Chemical adsorption combined with porous physical adsorption endowed SCCH excellent swelling and adsorption properties. Tensile, compression, bending and twisting test convinced that SCMF played a significant role on the improvement of mechanical strength. This novel 3D porous chitosan-based hydrogel was identified to be a promising sorbent with advantages of excellent sorption and mechanical properties.
研究领域:
环境科学
·
高分子科学
·
材料工程
·
化学工程
·
可持续发展
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhen Li,Kailin Luo,Geng Zhang,Lingxuan Qian,Xiaodong Huang
Li metal is promising as the anode for next-generation Li-ion batteries; however, uncontrollable dendrite growth and severe side reactions between the Li metal and electrolyte greatly restrict its commercialization. Here, a 3D porous protective layer constructed by core@shell-Cu@Li 3 N particles is developed to solve the above issues. This protective layer is easily prepared just by one-step dip coating in Cu(NO 3 ) 2 /N-methyl-2-pyrrolidone (NMP) solution. Due to rapid Li + transport and good wettability of the protective layer, it effectively modulates Li + flux and thus homogenizes Li deposition. More importantly, as confirmed by both the experimental results and phase-field simulations, the 3D porous protective layer enforces the Li dendrite to laterally grow to form an interconnected network, which causes that the subsequent Li deposition is constrained and filled in the inner space rather than savage growth. Therefore, both the symmetric battery and full cell constructed by the protected Li electrode displays much longer lifespan than the one with bare Li even in unstable liquid carbonate electrolyte. Also, this protective layer is demonstrated to be compatible with Li 1+x Al x Ti 2−x (PO 4 ) 3 (LATP) solid-state electrolyte by suppressing the side reactions. This work paves a new and facile strategy for developing high-performance Li metal anode.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2025
·
IF 11.3
Zhenmin Xu,Ting Zhang,Junyu Lang,Mengli Xu,Ya Xie,Chunyan Wu,Huangrong Wang,Han Yu,Zhenfeng Bian
Carboxylates are commonly formed as intermediates during the oxidation of volatile organic compounds (VOCs) and are often regarded as significant barriers to the complete mineralization of organic pollutants. In this study, we present a novel cobalt-doped copper-based catalyst that employs an in situ benzoic acid-mediated oxygen activation strategy for the photocatalytic degradation of toluene under visible-light irradiation. Unlike traditional systems in which carbonyl intermediates contribute to catalyst deactivation, we demonstrate that benzoic acid, generated during toluene oxidation, acts as a potent ligand to modulate the electronic structure of cobalt sites. This interaction significantly enhances oxygen activation and promotes the generation of reactive oxygen species (ROS), facilitating the complete oxidation of toluene to CO2 with nearly 100% efficiency. In situ characterization and density functional theory (DFT) calculations reveal that the migration of benzoic acid from copper to cobalt sites under visible light is critical for the oxidation process. This migration induces a pronounced electron-donating effect, enabling activation of the Co center, which drives efficient ROS production and autocatalytic mineralization of benzoic acid. The resulting Co-Vo-Cu catalyst demonstrates exceptional catalytic activity and stability, outperforming previous systems in VOCs degradation. This work offers new insights into the role of organic intermediates in oxygen activation and presents a promising strategy for the development of next-generation photocatalysts for VOCs elimination.
研究领域:
环境催化
·
光催化
·
材料化学
·
表面化学
·
反应机理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 20
·13902-13910
·
IF 3.9
Jing Tian,Weixin Qian,Haitao Zhang,Hongfang Ma,Weiyong Ying
In this paper, catalysts with different aluminum contents were prepared by a co-precipitation method using LDHs (layered double hydroxides) as the precursors through the adjustment of Cu2+ : Fe2+, and the catalysts were named LDO catalysts. The effect of aluminum on CO2 hydrogenation to methanol was investigated by evaluating the characterization. With the addition of Al, Ar physisorption results showed an increase in BET-specific surface area, TEM demonstrated a decrease in catalyst particle diameter, XRD showed that Cu and Fe existed in the catalyst mainly in the form of CuFe2O4 and CuO, XPS demonstrated a decrease in electron cloud density and an increase in base sites and oxygen vacancies, and CO2-TPD and H2-TPD results indicated that Al promoted the dissociation and adsorption of CO2 and H2. When the reaction temperature was 230 °C, the pressure was 4 MPa, H2/CO2 = 2.5 and the space velocity was 2000 ml (h gcat)−1, the best conversion (14.87%) and the highest methanol selectivity (39.53%) of the catalyst were obtained at 30% aluminum content.
研究领域:
催化
·
化学工程
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2022
·
IF 12.545
Siyu Luo,Fanglei Liu,Siyu Gu,Ke Chen,Guohai Yang,Yingqiu Gu,Juntao Cao,Lu-Lu Qu
Food-borne pathogens are one of the leading causes of food poisoning, which vigorously affect food safety and human health. Therefore, the development of early and rapid detection methods for food pollution evaluation is the key to food safety and quality control. Herein, a simple and inexpensive photoelectrochemical (PEC) sensor is developed for highly selective and ultrasensitive detection of Staphylococcus aureus (S. aureus). The technique is based on “signal-off” that employs Cu–C 3 N 4 –TiO 2 heterostructures as photoactive materials and monolayer Cu–C 3 N 4 nanozyme as a signal amplifier. In the presence of S. aureus , the aptamer-modified Cu–C 3 N 4 (Cu–C 3 N 4 @Apt, a signal amplifier) and S. aureus were specifically anchored on the surface of the ligand-modified photoelectrode . The Cu–C 3 N 4 @Apt nanozyme acted as a peroxidase to catalyze the oxidation of 4-chloro-1-naphthol (4-CN) to produce insoluble precipitate on the electrode surface and resulted in a significant decrease in photocurrent . Based on the signal-amplification by the Cu–C 3 N 4 @Apt nanozyme, the constructed PEC sensor demonstrated a wide linear range between 10–10 8 CFU/mL for the S. aureus detection with the detection limit (LOD) as low as 3.40 CFU/mL. Furthermore, the PEC sensor was capable of determining S. aureus in spiked orange juice and milk, with the recovery of 91%–113%, indicating the reliability of the sensor for S. aureus detection in real samples. This investigation provides a feasible strategy for the design of highly selective and ultrasensitive PEC sensors to determine analytes in complex systems.
研究领域:
分析化学
·
生物传感器
·
食品安全
·
纳米技术
·
光电化学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）