NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Zefan Liu,Xuejiao Rong,Jianchao Ma,Yin Xiao,Lin Shuo Jiang,Yang Li,Xilong Yan,Ligong Chen,Bowei Wang
The development of M-N-C catalysts (M = Fe, Co, Ni, etc.) was hindered by poor distribution of metal species and large particle size. In this work, alkaline additives were introduced during the precursor synthesis stage to regulate the distribution of metal components. Through hydrothermal and pyrolysis methods, Co-N-C catalysts (Co-N-C-NH3, Co-N-CO3, and Co-N-C-OH) were synthesized by using folic acid as the carbon and nitrogen source, cobalt chloride as metal salt, and ammonia solution, sodium carbonate solution, and sodium hydroxide solution as alkaline additives, respectively. The influence of different alkaline additives on the morphology, composition, and structure of Co-N-C catalysts was systematically analyzed through systematic characterization methods. The results indicated that the Co-N-CO3 catalyst prepared using sodium carbonate solution has a largest specific surface area, smallest and most evenly distributed Co nanoparticles. Moreover, the catalytic activity of the prepared Co-N-C catalyst in the hydrogenation of nitrobenzene was evaluated, and the influence of alkaline additives on its catalytic performance was further explored. Among them, the Co-N-CO3 catalyst achieved the best in the hydrogenation of nitrobenzene after reacting at 110 °C and under 1 MPa hydrogen for 3 hours, with a nitrobenzene conversion rate of over 99%. Comparative experiments confirmed that Co nanoparticles and Co-Nx sites constituted the active centers of the catalytic reaction. This strategy provides theoretical support and practical basis for optimizing the performance of Co-N-C catalyst.
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
·
2026
·
IF 10.6
Jinhao Qian,Haoan Fan,Shiyu Wang,Wenhua Zhou,Yilei Ren,Chao Chen,Zhenyu Zhang,Jie Fu
Non-noble metal-based catalysts are promising candidates for efficient glucose hydrogenation. However, their practical application remains challenging due to limited intrinsic activity and poor stability. Herein, we demonstrate that the inverse catalyst featuring zirconium oxide nano-islands immobilized on a metallic Co matrix exhibits superior activity compared to the conventional supported catalyst. The optimal ZrO 2 /Co catalyst achieves an outstanding sorbitol productivity of 37.6 g Sor g Cat -1 h -1 and displays excellent reusability over 11 consecutive runs. Kinetic studies and comprehensive characterizations uncover that the inverse Zr-Co interface enriches oxygen vacancies and synergistically modulates the adsorption of glucose and hydrogen, thereby prompting the selective hydrogenation of carbonyl groups. This work offers a rational design strategy for developing high-performance and durable inverse catalysts for biomass hydrogenation.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2026
·
IF 18.1
Chen Jiawei,Chen Hongqiu,Cai Xiangbin,Wang Yue,Peng Mi,Sun Bo,Diao Jiangyong,Sun Geng,Ma Ding,Liu Hongyang
Single-atom catalysts have found widespread application in selective hydrogenation reactions partially due to their well-defined active site structures, which ensure exceptional chemical selectivity. However, the limited binding sites on single-atom catalysts hinder their application in hydrogenating larger multidentate substrates (e.g., benzonitrile). In this work, we introduced a heteronuclear Rh-Co dual-atom catalyst stabilized on the defective graphene supports (Rh 1 Co 1 /ND@G), which resolves the activity-selectivity trade-off in nitrile hydrogenation reaction. The Rh 1 site primarily activates H 2 , whereas the Co 1 site synergistically optimizes the adsorption of benzonitrile. The cooperative interaction between Rh-Co dual sites enhances the activation of the C ≡ N bond, significantly reducing the apparent activation energy compared to Rh SACs. The Rh 1 Co 1 /ND@G catalyst achieves exceptional performance under mild reaction conditions, delivering a TOF of 4068 h -1 with >98% dibenzylamine selectivity, surpassing all previous reported heterogeneous catalysts. Remarkably, the Rh 1 Co 1 /ND@G catalyst still maintains robust catalytic performance even after 12 cycles. This work not only presents a breakthrough in dual-atom catalyst design for nitrile hydrogenation, but also opens an avenue for developing high-performance industrial hydrogenation catalysts.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTAL GROWTH & DESIGN
·
2026
·
IF 3.6
Yuze Xie,Duying Zhang,Yang Zhang
Abstract Two structurally similar cocrystals, colchicine/L-malic acid (COL/L-MA) and colchicine/D-tartaric acid (COL/D-TA), were prepared to investigate their co-crystallization behavior via in situ ATR-FTIR spectroscopy. Ternary-phase diagrams combined with a 1:1 solution complexation model revealed a strong complexation effect between the active pharmaceutical ingredient and both co-crystal formers. The conventional calibration strategy was applicable to the COL/L-MA system; however, an alternative calibration method was established for the COL/D-TA system to avoid undesired premature nucleation during spectral calibration. Kinetic analysis indicates that cocrystal formation governs the overall rate of the COL/L-MA process, while dissolution of D-TA constitutes the rate-determining step for COL/D-TA, which originates largely from the solubility difference between the two co-crystal formers. Intriguingly, abnormal apparent concentration rises were detected for both systems, yet they arise from fundamentally different origins: mutual solubilization accounts for the concentration surge in COL/L-MA, whereas the anomaly in the COL/D-TA system stems from complexation-induced spectral enhancement instead of real concentration variation. The proposed model successfully distinguishes these spectral artifacts, allowing credible identification of intensive nucleation events and supporting process-condition optimization. This work offers mechanistic understanding and practical guidance for co-crystallization systems containing structurally similar co-crystal formers.
✓ 已验证
DOI
高影响因子
Physical Review Materials
·
2026
·Vol. 10
·期 10
·104403
·
IF 3.6
Sirui Huang,Lun Jin,Yuchen Liu,Xiyu Chen,Leili Tan
Low dimensional quantum materials have been extensively studied within the physics community, among which $\mathrm{C}{\mathrm{o}}^{2+}$ is one of the most popular magnetic ions to be embedded into the structural motif. $\mathrm{CoN}{\mathrm{b}}_{2}{\mathrm{O}}_{6}$ and $\mathrm{CoT}{\mathrm{a}}_{2}{\mathrm{O}}_{6}$ both have adopted an effective spin-1/2 state, with the former attracting enduring interest while the latter being rarely investigated. This difference can be attributed to their distinct crystal structures, not only in crystal systems, but more important, how the $\mathrm{Co}{\mathrm{O}}_{6}$ octahedra are connected. We successfully merge these two compounds together and map out the doping limits. We find out Ta and Nb dopants modify the properties of the parent compounds in subtle but different ways and construct a magnetic phase diagram of the $\mathrm{Co}{(\mathrm{N}{\mathrm{b}}_{x}\mathrm{T}{\mathrm{a}}_{1\ensuremath{-}x})}_{2}{\mathrm{O}}_{6}$ $(0\ensuremath{\le}x\ensuremath{\le}1)$ series. In addition, our results suggest that Ta-doping may pave a way to strengthen the lower-dimensional quantum phenomena in $\mathrm{CoN}{\mathrm{b}}_{2}{\mathrm{O}}_{6}$ before its crystal structure starts to melt down.
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Wenli Wu,Gang Xie,Xinyu Zhang,Daiqi Ye,Limin Chen
A series of Co/MgAl 2 O 4 (CM1A2) catalysts with controlled cobalt loadings (0.5–3 wt%) were successfully synthesized using a co-precipitation method and tested for CO 2 -mediated oxidative dehydrogenation of ethane (CO 2 -ODHE) reaction. 1.5CM1A2 catalyst (1.5 wt%) displays the best catalytic performance, superior to other transition metal-based catalysts with ethane conversion, CO 2 conversion and ethylene yield at 700 °C about 42%, 8% and 38%, respectively. The catalysts were systematically characterized by X-ray diffraction (XRD), Raman spectroscopy, Ultraviolet-visible spectrophotometry (UV–vis), X-ray photoelectron spectroscopy (XPS), and in-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The results reveal that the non-reducible MgAl 2 O 4 support possesses remarkable thermal stability and the obtained catalysts exhibit resistance to dry reforming of ethane (DRE) reaction, facilitating prolonged high catalytic activity and selectivity at 650–700 °C. Co 3+ was primarily in Co 3 O 4 , whereas Co 2+ was identified within both Co 3 O 4 and highly stable CoAl 2 O 4 ; however, Co 2+ /Co 3+ decreases continuously along with cobalt loading increase. In addition, CoAl 2 O 4 promotes ethylene formation. In Co 3 O 4 , Co 3+ is more susceptible to reduction to metallic Co 0 under the reaction atmosphere, promoting reverse water-gas shift (RWGS) reaction and finally enhancing oxidative dehydrogenation of ethane. These insights offer a valuable framework for the rational design of efficient and durable catalysts for the CO 2 -ODHE process.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Wan-Long Li,Xiao-Wei Luo,Wan-Ting Lin,Si-Yuan Zhang,Zi-Lu Zhang,Zi-Jun Zhang,Zhi-Kang Xu,Ling-Shu Wan
Nanofiltration (NF) membranes show superior ion selectivity, which, however, decreases with temperature owing to excessive pore expansion of the selective layers. Herein, an effective and feasible co -solvent strategy is proposed to improve the thermostability of polyamide NF membranes. The co -solvent systems with low interfacial tension accelerate the interfacial diffusion of aqueous monomers during the interfacial polymerization. Moreover, the enhanced compatibility between the organic phase and the nascent polyamide layer, which is assessed by the Hansen solubility parameters, facilitates the formation of selective layers with high cross-linking degree. The resultant compact selective layers possess enhanced thermostability. The optimized NF membrane exhibits a high permeance of 24.8 L·m −2 ·h −1 ·bar −1 with 98.3% MgSO 4 rejection at 85 °C. The present method shows great potential for preparing thermostable NF membranes.
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Tianchi Zhang,Yaoting Wen,Chenglong Xia,Xuhui Xu,Guoping Wang,Yongcai Zhang
Developing efficient, recyclable heterogeneous catalysts for the oxidation of p-methoxytoluene (p-MT) remains a critical challenge in industrial organic synthesis. Herein, a ternary Co-Mn-Ce oxide catalyst was synthesized via co-precipitation and systematically optimized to address limitations in mass transfer and catalyst reusability. By modulating the Ce content, the structural evolution from cobalt‑manganese spinel phases to CeO 2 -dominated crystallites was demonstrated, significantly influencing catalytic performance. The CoMn 3 Ce 1.9 catalyst with high Ce loading exhibited a p-MT conversion of 95.0% under mild conditions, outperforming the low-Ce analogs, which showed only 50–60% p-MT conversion. Characterization revealed that CeO 2 -rich catalysts featured larger average pore sizes (18 nm vs. 2–4 nm for spinel-dominated systems), mitigating diffusion constraints and enhancing oxygen activation. High-concentration experiments (8 mL p-MT) maintained 77.7% conversion after 12 h, but with increased esterification to p-methoxybenzyl acetate (p-MBAc). Remarkably, the catalyst retained >70% activity over four runs. This work highlights the optimized pore architecture in overcoming traditional limitations of spinel-based catalysts, offering a sustainable, scalable strategy for aromatic aldehyde synthesis. The findings provide critical insights into designing multifunctional heterogeneous catalysts for selective C(sp 3 )-H bond activation, with broad implications for green chemical manufacturing.
✓ 已验证
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2026
·
IF 4.7
Sheng Lin,Yuting Wang,Chunxiang Huang,Yu Niu,Yongming Liu,Wangchuan Xiao,Fenghua Chen,Rongrong Xue
Co-amorphous systems, including co-amorphous and co-amorphous salts, can enhance the solubility of poorly water-soluble small molecules. It is important to identify them because co-amorphous and co-amorphous salts have different physicochemical properties. Co-amorphous system of luteolin (LUT, a well-known poorly soluble flavonoid) and amino acids at a molar ratio of 1:1 was prepared using neat ball milling. Only amorphous luteolin-arginine (LUT-Arg) and luteolin-lysine (LUT-Lys) exhibit significant solubility enhancements in the media of water and PBS. The Δ p K a rule suggests that LUT-Arg (Δ p K a , 2.8) and LUT-Lys (Δ p K a , 2.9) are close to co-amorphous salts. Diffuse reflectance spectroscopy and Raman spectroscopy confirmed that LUT-Arg and LUT-Lys are co-amorphous salts, while IR spectroscopy, the most common used method, cannot distinguish them. Comprehensive multiple characterizations (>2) are essential to confirm the formation of co-amorphous or co-amorphous salts, such as applying the Δ p K a rule, diffuse reflectance spectroscopy, and Raman spectroscopy for LUT-Arg and LUT-Lys.
✓ 已验证
产品关联
DOI
高影响因子
Science China-Chemistry
·
2026
·
IF 9.7
Xiao Chenwei,Xu Xiaocheng,Tian Zhenjiang,Xiao Chengliang
The rapid development of nuclear energy necessitates reliable radioactive waste forms to ensure sustainable nuclear industry growth. Conventional cement or glass matrices face critical limitations, including insufficient chemical durability and low radionuclide loading. Inorganic ionic co-crosslinking polymerization is a novel method to produce compact inorganic materials, which can achieve plastic preparation of inorganic blocks at the molecular scale and has not yet been used to immobilize radionuclides. This study utilizes calcium carbonate phosphate compounds (referred to as CaCP) with molecular homogeneity, synthesized through a controlled crosslinking polymerization method utilizing inorganic ion oligomers to immobilize cationic radionuclides for the first time, such as representative strontium, europium, and uranium. CaCP is compared with calcite and hydroxyapatite waste forms synthesized through the same method. The results demonstrate that CaCP exhibits superior chemical stability, mechanical strength, and cost-effectiveness. The normalized leaching rates for strontium, europium, and uranium are recorded at 1.33×10 −6 , 4.89×10 −10 , and 3.05×10 −9 g m −2 d −1 , respectively. Structural characterization elucidates the immobilization mechanism and demonstrates the CaCP’s high immobilization efficiency and enhanced properties, while theoretical calculations further support the structural insights. This work highlights the potential of CaCP as a promising candidate for advanced radioactive waste management.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.3
Fengkai Shang,Cuijian Zhao,SuJun Cheng,Tianheng Zhang,Lusu Li,Shujie Liu,JunLi Fang,YiHang Li,Xiaoting Hao
The photocatalytic reduction of CO 2 with H 2 O is a promising route for solar-to-chemical energy conversion but remains limited by the inertness of CO 2 and poor product selectivity. Here, we construct a Mn-OVs-Ti asymmetric heterostructure by integrating oxygen-vacancy-rich MnO 2 nanosheets with TiO 2 nanoparticles to modulate interfacial charge distribution. The resulting built-in electric field enhances CO 2 adsorption, stabilizes the COOH* intermediate, and promotes directional charge migration. As a result, the 50-MT catalyst delivers a CO evolution rate of 177.71 μmol g −1 within 5 h with nearly 100 % selectivity in pure water under simulated sunlight. In situ DRIFTS, EPR, and DFT analyses confirm the strengthened CO 2 activation and lowered reaction barriers at the Mn-OVs-Ti interface. This work demonstrates the effectiveness of asymmetric interfacial engineering in tuning photoredox pathways and provides a general strategy for developing efficient and selective CO 2 reduction photocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Bio
·
2026
·
IF 11
Yujun Zhang,Fengfei Zhao,Feiyi Sun,Haiyan Chen,Lingling Wang,Rendy Hosea,Zheng Zhao,Ben Zhong Tang,Fei Sun,Xinghua Yu
The emergence of aggregation-induced emission (AIE) luminogens has revolutionized biomedical theranostics, yet the exploration of natural AIE-active therapeutics remains nascent. Herein, we propose a novel “AIE-Pharmacology” paradigm, employing the natural flavonoid acacetin as an intrinsic AIEgen with pharmacological activity for self-monitored therapy of asthenozoospermia. Overcoming traditional aggregation-caused quenching (ACQ), acacetin utilizes its aggregation-enhanced emission and excited-state intramolecular proton transfer (ESIPT) properties to enable simultaneous treatment, high-contrast imaging, and tracking. We developed an extracellular vesicles (EVs)-based co-delivery system loaded with acacetin and β-Nicotinamide mononucleotide (NMN). This nanoplatform (EVs@N + A) exhibits inherent affinity for the testicular microenvironment. Upon targeted accumulation, released acacetin triggers a potent anti-ferroptotic response by upregulating GPX4 and SLC7A11 and suppressing lipid peroxidation. In parallel, NMN elevates intracellular NAD + levels, reprogramming cellular metabolism and restoring ATP production. This dual strategy—inhibiting ferroptosis and rejuvenating metabolism—effectively rescues sperm function, enhancing sperm count, motility, and progressive movement in vivo . Our work reports acacetin as a multifunctional AIEgen in reproductive medicine and establishes a traceable theranostic platform, introducing the “AIE-Pharmacology” paradigm as a promising approach for treating male infertility and other diseases.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）