APPLIED ORGANOMETALLIC CHEMISTRY
·
2024
·Vol. 38
·期 8
·e7556
·
IF 3.7
Muhammad Jawad Ahmad,Xue Lu,Liye Liang,Guangming Li
Since catalytic chemoselective reduction of corresponding nitroarenes is a significant route to produce functionalized anilines, developing inexpensive and highly active catalyst is imperia. Herein, the Co-Ce-H 2 salen-hmta composite was first prepared by grinded completely the mixture of Co-H 2 Salen and hexamethylenetetramine (hmta) in 1:1 mol ratio in a mortar. The 3d–4f hetero-metal Co-Ce-H 2 salen coordination polymer acted as a support precursor and hmta provided the nitrogen source. Then, a target catalyst of Co/NC-CeO 2 -hmta were afforded by pyrolysis of Co-Ce-H 2 salen-hmta composite at 800°C in the presence of argon atmosphere. When the target catalyst of Co/NC-CeO 2 -hmta and reference catalysts were applied for the hydrogenation of nitroarenes under N 2 H 4 , the target catalyst of Co/NC-CeO 2 -hmta exhibited better performance than reference catalysts in terms of conversion, yield, selectivity, and recyclability. Spectral analysis suggested that the high catalytic performance of a target catalyst of Co/NC-CeO 2 -hmta were attributed to highly dispersed metallic Co 0 , rich oxygen vacancies, and nitrogen-doped carbon matrix.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2025
·
IF 6.2
Yingna Li,Muhammad Sajjad Ahmad,Pei Gao,Yu Zhang,Mingtao Yang,Xiaolan Zhao,Boxiong Shen
This study examined the catalytic pyrolysis of melon seed shell (MSS) using vanadium tungsten modified ZSM-5 (V/W-ZSM-5) through combined experimental and theoretical methods. Thermogravimetric analysis (TGA) with model-free kinetics revealed that the catalyst lowered the activation energy by about 10 % (184–194 kJ mol⁻¹) compared with non-catalytic pyrolysis. Thermodynamic assessment showed reduced entropy (ΔS) values for conversion fractions below 0.7, indicating a more ordered and energy-efficient pathway. Product distribution from Py-GC/MS confirmed enhanced selectivity, with levoglucosan and furfural yields increasing nearly 5-folds and 3-folds, respectively. Density functional theory (DFT) clarified the mechanistic pathways: levoglucosan formed primarily via glucose dehydration, while furfural production followed xylose ring-opening and nucleophilic conversion. Collectively, these findings demonstrate that V/W-ZSM-5 not only improves selectivity toward high-value products but also reduces both kinetic and thermodynamic barriers, highlighting its potential for sustainable biomass valorization.
✓ 已验证
DOI
高影响因子
Materials
·
2019
·Vol. 12
·期 4
·670
·
IF 2.972
Xiangyang Chen,Rui Bao,Jianhong Yi,Dong Fang,Jingmei Tao,Yichun Liu
Carbon nanotube (CNT)-reinforced metal matrix composites (MMCs) face the problems of dispersion and interfacial wetting with regard to the matrix. A synergetic method of spray pyrolysis (SP) and flake powder metallurgy (FPM) is used in this paper to improve the dispersibility and interfacial bonding of CNTs in a Cu matrix. The results of the interface characterization show interface oxygen atoms (in the form of Cu2O) and a high density of dislocation areas, which is beneficial for interfacial bonding. The tensile results show that the tensile strength of the SP-CNT-Cu composites is much higher than that of the CNT-Cu composites when the mass fraction of the CNTs does not reach the critical value. This can be explained by the nanoparticles which are found on the surface of the CNTs during the SP process. These nanoparticles not only increase the tensile strength of the SP-CNT-Cu composites but also improve the dispersion of the CNTs in the Cu matrix. Thereby, uniform dispersion of CNTs, interfacial bonding between CNTs and the Cu matrix, and the enhancement of tensile strength are achieved simultaneously by the synergetic method.
✓ 已验证
DOI
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2026
·
IF 6.7
Zekai Zhang,Qingyi Xiang,Shuangqi Dong,Sijia Li,Zhijun Fu,Yue Ma,Changtao Yue
The accumulation of polyvinyl chloride (PVC) waste poses a critical environmental challenge due to its high chlorine content and the release of hazardous byproducts during conventional thermal treatment. Developing a robust, chlorine-tolerant technology for converting PVC into high-value chemicals is therefore essential for the circular economy. Herein, we propose a sustainable “catalytic pyrolysis–adsorption” decoupling strategy that integrates hydrocarbon recovery with efficient chlorine fixation. By utilizing an ex-situ configuration in a tandem fixed-bed reactor comprising Fe/Co-modified ZSM-5 catalysts and a CaO adsorbent, this process achieves the synergistic transformation of waste PVC and mixed plastics into clean aromatic hydrocarbons. Mechanistic investigations reveal that the spatial separation of pyrolysis and adsorption allows for precise reaction control: the modified zeolite promotes dehydroaromatization, while CaO chemically sequesters gaseous HCl as thermally stable CaCl 2 , effectively blocking the reformation of organochlorides. Under optimized ex-situ conditions, the system achieves a maximum liquid oil yield of 19.71 wt% for pure PVC and 23.73 wt% for simulated mixed plastics, with the final chlorine content in the liquid oil dramatically reduced to 5.02 mg/L. Furthermore, the selectivity toward high-value monocyclic aromatic hydrocarbons (BTEX) in the oil phase is significantly enhanced via bimetallic-driven dehydroaromatization, offering a robust pathway compliant with clean fuel standards. This work provides a green, scalable pathway for the detoxification and valorization of chlorine-rich plastic waste, offering a promising solution to the “chlorine bottleneck” in plastic recycling.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Hao Zhang,Xiao Cheng,Zixu Chen,Haozhuo Dong,Ting Yu,Ruifang Guan
Room-temperature phosphorescent carbon dots (RTP-CDs) emerge as pivotal materials for bioimaging and information encryption, yet their application is hindered by complex synthesis, limited color tunability, and short lifetimes. Herein, we develop a one-step pyrolysis strategy to fabricate RTP-CD composites using aliphatic dicarboxylic acids and boric acid. Significantly, only the adipic acid-boric acid system (CDA) achieves ultrabroad multicolor RTP from blue to red (470–610 nm) with a record-high afterglow of 9 s. Chlorine modification further extends the afterglow to 16 s and elevates the phosphorescence lifetime to 43.76 ms without compromising color range. Mechanistic studies reveal that the rigid boron oxide matrix suppresses non-radiative transitions of triplet excitons, while CD size and surface oxidation govern emission color; the external heavy-atom effect reduces singlet-triplet energy gaps to enhance intersystem crossing (ISC). Leveraging time-resolved multicolor phosphorescence, we demonstrate dynamic anti-counterfeiting with color evolution and multi-dimensional Morse code encryption, offering a scalable synthesis route and novel materials for high-security applications. Download: Download high-res image (88KB) Download: Download full-size image
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2026
·
IF 6.7
Zhaoyu Chen,Jialin Zhang,Zihui Xiong,Song Hu,Nan Li,Sheng Su,Yi Wang,Long Jiang,Jun Xu,Kai Xu,Jun Xiang
Selective recovery of phenolics from waste wind-turbine blade epoxy is limited by uncontrolled secondary reactions during pyrolysis. Here, choline chloride–ethylene glycol deep eutectic solvent (DES) swelling was coupled with iron(III) citrate-assisted Fe introduction. Final temperature (400–600 °C) and Fe level were varied to resolve changes in thermal behavior, phase yields, and normalized gas chromatography–mass spectrometry peak areas. Pretreatment retained 81.16–88.81% of the resin, and inductively coupled plasma optical emission spectrometry measured 0.629–1.406 wt% Fe in Fe-containing composites. The main decomposition region shifted to lower temperature, while the full width at half maximum of the main DTG peak narrowed from 42.51 to 35.48 °C. At 500 °C, Fe0.45 (0.45 mol L −1 Fe 3+ in the treatment solution; 0.750 wt% Fe in the composite) gave a C 9 -substituted-phenol normalized peak area of 57.70%, 35.26% higher than that of Raw. These products represented 63.65% of total phenolics. Higher Fe levels or a final temperature of 600 °C increased gas formation and reduced oil recovery, consistent with stronger secondary conversion. Product-distribution, Raman, and textural trends indicate that Fe0.45 at 500 °C provided the most favorable observed balance between precursor conversion and downstream dealkylation and condensation. Coupling DES swelling with controlled Fe introduction therefore offers a tunable route for the relative enrichment of C 9 -substituted phenols during the thermochemical valorization of waste wind-turbine blade epoxy.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Tao Chang,Qin Wang,Shijia Wu,Zhimiao Zhao,Yinjiang Zhang,Xian Lu,Yunhui Zhang
Phosphate-loaded pyrolyzed gypsum board was innovatively reused for Cd(Ⅱ)/Pb(Ⅱ) remediation. • Single and coexisting heavy metal systems were systematically evaluated in both aqueous and soil environments. • The recycled material achieved enhanced Cd(Ⅱ) adsorption while retaining high Pb(Ⅱ) removal capacity. • Phosphate-driven mineralization and ion exchange between hydroxyapatite and heavy metals enhance the immobilization. This study proposed a cascade utilization strategy for waste gypsum board by reusing phosphate-loaded pyrolyzed gypsum board (PGB150P) for Cd(Ⅱ) and Pb(Ⅱ) remediation in aqueous and soil environments. The results showed that PGB150 exhibited excellent Pb(Ⅱ) affinity (q max = 1396.14 mg/g) but limited Cd(Ⅱ) adsorption capacity (161.21 mg/g). PGB150P significantly enhanced Cd(Ⅱ) adsorption (403.84 mg/g) while retaining high Pb(Ⅱ) adsorption performance (1271.13 mg/g). In the Cd(Ⅱ)–Pb(Ⅱ) system, the adsorption capacities of Cd(Ⅱ) and Pb(Ⅱ) decreased to 170.17 and 980.05 mg/g, respectively, with Pb(Ⅱ) showing a stronger competitive advantage. Adsorption followed the Langmuir model and was spontaneous endothermic chemisorption controlled by film and intraparticle diffusion. PGB150P exhibited a broad pH adaptability and strong resistance to common coexisting ions. Mechanistic quantification revealed that Cd(Ⅱ) removal by PGB150P was dominated by precipitation (58.56%) and ion exchange (34.7%), while Pb(Ⅱ) removal was also dominated by precipitation (62.41%) and ion exchange (31.7%). Soil immobilization experiments showed that after 28 days treatment, PGB150P increased the residual fractions of Cd and Pb to 29% and 50%, respectively. In the Cd-Pb system, the residual fractions were increased to 15% and 49%, respectively. After five adsorption–desorption cycles, PGB150P retained about 71% of its Cd(Ⅱ) capacity and 93% of its Pb(Ⅱ) capacity. Cost analysis indicated a total cost of only 39–54 USD/t, substantially lower than that of adsorbents prepared with exogenous phosphate or commercial hydroxyapatite. This study provides theoretical support for the high-value utilization of construction solid waste and the remediation of multi-media heavy metal pollution. Download: Download high-res image (253KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Rui Diao,Cunzhang Yang,Liting Fu,Xinran Zhou,Bowen Li,Yakai Ma,Zhenting Zha,Fenglei Qi,Xiaohao Liu,Peiyong Ma
While the imperative for a low-carbon energy transition and electrification substitution has established electric vehicles (EVs) development as a critical strategy for carbon emission reduction, power battery recycling consequently represents a pivotal link in completing the lifecycle management of EVs. Herein, we report a novel approach for recovering lithium iron phosphate (e.g., LFP) from spent batteries based on a synergistic pyrolysis process. Biomass and sodium carbonate are used together to disrupt the olivine structure through carbothermal reduction with a relatively low temperature. The results indicated that biomass generated more reducing gases and phenolic compounds through sodium carbonate-assisted pyrolysis, which lowered the reduction barrier for the metal oxides in spent LFP, substantially reducing the reaction temperature by 240 °C compared to conventional graphite reduction. Moreover, sodium carbonate effectively suppresses the volatilization of lithium at high temperatures, enabling high recovery efficiencies of 93% from iron and 95% from lithium. The scalability was confirmed by bench-scale experiments, which showed consistent recovery performance at a 50-fold scale increase. The environmental benefits of this pathway, as per life cycle assessment, reduce the environmental footprint and align with industrial green standards. This study presents a novel recycling strategy for spent LFP, based on a biomass-assisted reduction process with a mineralization agent. The incorporation of biomass addresses both economic and environmental challenges, thereby establishing a cost-effective and green technology suitable for the large-scale recycling of LFP.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Liyuan Guo,Nengneng Xu,Tuo Lu,Qin Cao,Momo Safari,Jong Min Kim,Yongxia Wang,Jinli Qiao
The rational design of bifunctional electrocatalysts with abundant active sites and efficient charge/mass transport is crucial for Zn-air batteries. Here, we report a scalable electrospinning strategy to fabricate Co/N-doped carbon nanofibers (CNFs) with a beaded architecture derived from ZIF-67@PAN precursors. By precisely tuning the ZIF-67 loading, the intercluster spacing along the fibers can be controlled, yielding well-dispersed Co nanoparticles and Co-N x moieties after pyrolysis. Critically, vertically stacked nanofibrous membranes enable scalable manufacturing. The optimized Co/Co-N x -C@CNF-1.5 exhibits superior bifunctional activity (Δ E = 0.815 V), benefiting from balanced active-site density, rapid electron transport, and hierarchical porosity. Density functional theory calculations further reveal the microscopic origin that an appropriate spacing enables moderate electronic coupling between adjacent Co-based active sites, thereby optimizing the adsorption energetics of oxygen intermediates and facilitating ORR/OER kinetics. As an air cathode, the liquid Zn-air battery delivers a peak power density of 406.5 mW cm −2 , an energy density of 976 Wh kg −1 , and a long cycling stability of ∼2143 h. The quasi-solid-state device also shows high power output, stable operation, and excellent flexibility. This work demonstrates a general electrospinning-pyrolysis approach to engineer MOF-derived self-supporting electrodes, bridging high-performance electrocatalysis with practical energy storage applications.
✓ 已验证
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2026
·
IF 5.8
Wei Liu,Qin Yu,Cen Pan,Mingxin Wang,Di Wang
Convert PCS into Si-CS with effective adsorption/catalytic properties. • Si-CS exposes more carbonate and metal oxides to adsorb heavy metals. • Si-CS produces more sites to activate PMS and produce reactive oxygen. • Si-CS generates more graphitic carbon to accelerate direct electron transfer. • The ROS exposure in the Si-CS/PMS system was quantified. Petroleum-contaminated soil (PCS) can be effectively remediated via pyrolysis, yielding a mineral/carbon composite; however, its resource recovery remains insufficiently explored. This study proposes a combined process involving ball milling with natural silica sand as additive followed by oxygen-limited pyrolysis to convert PCS into carbonized soil for reuse as a wastewater treatment material, with theoretical maximum adsorption capacities of 1338.88, 293.97, 125.20, and 58.75 mg/g for lead, copper, zinc, and cadmium, respectively. The material can also effectively activate peroxymonosulfate (PMS) oxidation to generate reactive species—including sulfate radicals, hydroxyl radicals, and singlet oxygen—enabling dual degradation pathways for organic pollutants through both radical and non-radical mechanisms. The combined treatment exposes more functional components (carbonates, metal oxides, and solid carbon including amorphous and graphitic carbon) on the surface, enhancing reactivity and significantly improving adsorption and catalytic performance. This environmentally sustainable strategy utilizes resource recovery to offset remediation costs, demonstrating strong practical potential. Download: Download high-res image (122KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yumeng Wu,Jianjun Cai,Xingying Tang,Shubin Wang,Mingkang Fang,Shengfeng Yao,Jiafeng Zhang
In this study, we developed a synergistic recycling technology based on biomass pyrolysis, roasting, and water leaching of biomass single components (cellulose, hemicellulose, and lignin), aiming to address the environmental risks posed by spent lithium-ion batteries due to the rapid growth of the new energy battery industry. By innovatively utilizing the reducing gases (H 2 , CO) produced during the biomass pyrolysis process, we have not only achieved the structural cracking of ternary cathode materials but also reduced high-valent metal oxides (such as nickel, cobalt, and manganese oxides) to metallic states, thereby realizing selective lithium leaching. This study systematically explored how biomass type , dosage ratio, roasting temperature, and roasting time affect lithium reduction efficiency and leaching behaviour. Experimental results demonstrated that lignin exhibited the most potent synergistic effect under pyrolysis at 600 ℃. At a dosage ratio of 1:0.25, the lithium leaching rate exceeded 90 %, outperforming cellulose and hemicellulose under equivalent low-temperature and low-dosage conditions. A component-property database of biomass could be established to optimize dosing strategies for diverse cathode materials. Economic and environmental impact analyses using the Everbatt model indicate that biomass reduction leads to reduced energy consumption and greenhouse gas emissions, resulting in significant energy and environmental benefits. This study proposes a green and low-carbon lithium recycling method that integrates with metal recovery, providing technological innovation and practical significance for promoting sustainable development in the new energy sector.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2022
·
IF 8.035
Zhanshi Ni,Haobo Bi,Chunlong Jiang,Hao Sun,Wenliang Zhou,Zhicong Qiu,Qizhao Lin
Faced with increasingly severe environmental and energy issues, the development and utilization of solid waste have become a trend. In this study, a thermogravimetric-Fourier infrared spectrometer-mass spectrometer (TG-FTIR-MS) was used to carry out the co-pyrolysis experiment of coal slime and cellulose. The samples with mass mixing ratios of 0:10, 1:9, 3:7, 5:5, 7:3, 9:1, and 10:0 were pyrolyzed in N 2 atmosphere. The percentages of mass loss during the pyrolysis of coal slime and cellulose were 15.69 and 94.28%, respectively. The addition of cellulose to the coal slime could significantly improve the pyrolysis performance of the sample. It was detected by FTIR that the pyrolysis of the blends mainly formed C=O-containing compounds. MS was used to monitor the ion current intensity of gaseous products of sample pyrolysis online. The average activation energy of the reaction between coal slime and cellulose calculated by the Kissinger-Akahira-Sunose method were 237.59 kJ/mol and 174.06 kJ/mol, respectively. The principal component 1 and principal component 2 dominated the co-pyrolysis process of coal slime and cellulose. The MAE, RMSE, and R 2 of the artificial neural network prediction model for predicting the pyrolysis process of the sample were 0.5249, 0.8244, and 0.9994, respectively. This research provided basic theory and data support for understanding the co-pyrolysis of coal slime and biomass.
研究领域:
能源化学
·
环境科学
·
热化学转化
·
可再生能源
·
固体废物利用
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）