JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2024
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IF 4.1
Xian-De Zhou,Yong-Hui Tian
Biomass is a natural and renewable carbon resource. One of the possible green approaches to “carbon neutrality” is catalytic conversion of biomass resources into high value-added chemicals. As a result, photocatalytic selective oxidation of the biomass product 5-hydroxymethylfurfural (5-HMF) to 2,5-dicarbonylfuran (DFF) is an ecologically benign and energy efficient method. In this study, 2D g-C 3 N 4 /BiOCl heterostructures composites were prepared by easy ultrasonication-assisted stirring method for the first application of photocatalytic oxidation of 5-HMF to DFF. The physicochemical properties of the synthesized materials were characterized by SEM, XRD, FT-IR, XPS, UV–vis, BET surface area, PL and EPR analysis. The experimental results show that the g-C 3 N 4 /BiOCl composite is superior to pure g-C 3 N 4 and BiOCl in the oxidation of 5-HMF to DFF. The improved photocatalytic performance of the g-C 3 N 4 /BiOCl composites can be attributed to the improved visible light absorption, the creation of compact and intact Z-type heterojunction, increased surface area and enhanced separation efficiency of photogenerated electron-hole pairs. In addition, the photocatalyst has high stability and reusability. A putative photocatalytic process is proposed based on the respective energy band locations of these two semiconductors.
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高影响因子
RENEWABLE ENERGY
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2024
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IF 9
Wenli Zhang,Jifei Liu,Hongwei Gu,Cheng Pan,Yifei Long,Qunpeng Cheng,Guozhi Fan
The metal-organic framework materials ZIF-8 and UiO-66-NH 2 , synthesized by hydrothermal methods, were characterized in detail and combined to catalyze the transfer hydrogenation of 5-hydroxymethylfurfural (5-HMF) to 2,5-di(hydroxymethyl)furan (2,5-DHMF) using isopropanol as the hydrogen source. The ZIF-8/UiO-66-NH 2 catalyst mixture exhibited abundant Lewis acid-base sites and a hierarchical multiporous structure with a large specific surface area (564.0 m 2 /g). The conversion of 5-HMF reached 98.2 %, and the selectivity and yield of 2,5-DHMF were 96.2 % and 94.5 %, respectively. The recycling performance of ZIF-8/UiO-66-NH 2 was also investigated, and the conversion of 5-HMF and selectivity of 2,5-DHMF significantly decreased to 78.4 % and 79.1 % in the second run, respectively. The loss of −NH 2 groups was found to be the main reason for the decrease in activity. However, the catalytic activity of the recovered catalyst can be almost completely restored by the addition of a small amount of fresh UiO-66-NH 2 and ZIF-8, and the conversion of 5-HMF and selectivity of 2,5-DHMF were increased to 89.4 % and 95.5 %, respectively. In the proposed reaction mechanism, Lewis acid-base sites play important roles and exhibit a synergistic catalytic effect in the selective conversion of 5-HMF to 2,5-DHMF.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Kezhen Qian,Wenmin Tian,Zixu Yang,Jing Xu,Huihua Pan,Lijie Yin,Dezhen Chen
The catalytic upcycling of end-of-life polyethylene by using hierarchical zeolites has garnered attention. Fine-tuning these zeolites’ micromesoporous structure and acidity is crucial for process efficiency, which requires a comprehensive understanding of their impact on polyethylene cracking. The impact of the mesoporosity and acidity of aggregated hierarchical HZSM-5 zeolites on high-density polyethylene (HDPE) vapor cracking was studied. The results indicated that the hierarchical structure enhanced accessibility to internal acid sites, facilitating monomolecular cracking and aromatization. Intercrystalline mesopores additionally heightened the alkylated aromatic yields. The Si/Al ratio shows a positive correlation toward the C5+ aliphatic hydrocarbon cracking, which boosts the formation of C2–C4 olefins and BTEX (benzene, toluene, ethylbenzene, and xylene). However, the presence of mesopores also yielded more heavy aromatics, thus increasing the risk of coking. The role of acid sites spatial distribution was investigated by poisoning the acid sites in micropores via pre-coking. The results indicated that the cracking of HDPE vapor occurred on the external acid of the zeolite, followed by the subsequent C5+ aliphatic hydrocarbon cracking on the mesopore and micropore to form aromatics and C1–C4 products. The formation of BTEX mainly occurred in the micropore, while the heavier aromatics and other alkylated benzenes were formed in the mesopore. The results of this study highlighted the importance of a proper hierarchical structure and acid site distribution in zeolites for effective and stable polyolefin cracking.
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FUEL
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2024
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IF 6.7
Guozhang Chang,Shanshan Dai,Huifen Kang,Jie Li,Yong Liu,Jian Zhang,Qingjie Guo
Limited knowledge regarding the controlled preparation of aromatic hydrocarbons (AHs) via catalytic pyrolysis of individual organic components hinders high yields of lignocellulosic biomass-based AHs. This report describes a systematic investigation of AHs generation following catalytic pyrolysis of organic components referring to cellulose, xylan, and lignin. Results show that in a programmed-heating process (20 °C/min), a (Ca-Fe)/HZSM-5 catalyst promoted the degradation of cellulose, xylan, and lignin with respective increment ratios of 24.56 %, 17.29 % and 19.45 %, and significantly increased the release of benzene during the pyrolysis of cellulose and xylan. In a fast-heating process (20 °C/ms), Ca-Fe alone presented a positive effect on bio-oil yield from cellulose, whereas HZSM-5 and (Ca-Fe)/HZSM-5 afforded high bio-oil yields from all three components. Notably, Ca-Fe and HZSM-5 exhibited synergistic effects on the bio-oil and AHs yields following cellulose pyrolysis, and on AHs yield following xylan pyrolysis. Alcohols, aldehydes, and furans were suitable precursors for generating AHs via pyrolysis of both cellulose and xylan. Lignin conversion to AHs involved various potential reaction pathways, including dehydration-deoxygenation-aromatization and dehydration-hydrodeoxygenation. The orders of (Ca-Fe)/HZSM-5 catalyzed pyrolysis of individual components towards AHs generation were xylan > cellulose > lignin. The presence of Ca-Fe particles inhibited deactivation of HZSM-5 in pyrolysis of a cellulose/xylan/lignin mixture.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Yimin Zhang,Yun Zu,Ke Yan,Yuan Zhu,Yibin Luo,Enhui Xing,Qiang Li,Lijuan Song,Tan Li,Yi Mei,Xingtian Shu
In this work, a "bottom-up" strategy was proposed to one-step, in-situ synthesize P@ZSM-5 zeolites in a sodium-free system by elaborately self-designed tetrapropylphosphonium hydroxide as a new member of MFI-type zeolite organic templates inventory, and the interaction of phosphorus species with framework aluminum was investigated in detail. Multiple advanced characterizations confirm that the tetrahedrally-coordinated bidentate P IV -O 2 -Al IV structures are precisely customized and uniformly scattered in the zeolite channels. After experiencing harsh hydrothermal treatment (100 %H 2 O, 800 °C, 17 h), this new structure endows excellent hydrothermal stability of zeolite (crystallinity retention beyond 95 %) and reinforces its Brønsted acidity. Furthermore, methanol-to-propylene tests show that directly synthetic P@ZSM-5 zeolite performs extraordinarily long lifetime (180 h, WHSV = 1 h −1 ), enviable propylene selectivity (60.4 %) and propylene/ethylene ratio ( ca. 4.3) compared to the counterparts, which is benefited from encouragingly olefinic cycle pathway. These findings afford value-filled opportunities in novel catalyst production mode and understandings for phosphorus-zeolite chemistry . Synopsis -A "bottom-up" strategy was demonstrated to one-step, in-situ synthesize P@ZSM-5 zeolite in a sodium-free system by elaborately self-designed tetrapropylphosphonium hydroxide. The resultant P@ZSM-5 catalyst with hyperuniformly-stable bidentate P IV -O 2 -Al IV structures exhibited extraordinarily long lifetime (180 h) and enviable propylene selectivity (60.4 %).
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JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
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2025
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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.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Xiaonan Qiu,Jiaying Liu,Li Song,Huijun Yu,Yunchao Wu,Qinxin Wang,Mengke Lu,Xuan Gu,Baoding Chen,Miaomiao Zhang,Fengyi Du
Bioorthogonal chemistry-based cancer therapy greatly reduces the side effects of chemotherapy drugs; however, complicated and expensive procedures limit its clinical application. Disulfiram (DSF), an FDA-approved anti-alcoholic drug, can combine with copper to form a DSF‑copper complex with remarkable tumor-killing effects. Inspired by the bioorthogonal chemistry, we fabricated an in situ crosslinked self-adaptive hyaluronic acid hydrogels (Cu-A/P@PH HGs) via a dynamic boronic ester bond-based reaction between Cu/5-aminolevulinic acid (5-ALA) self-assembled nanoparticles containing PVA (Cu-A/P NPs) and phenylboronic-grafted hyaluronic acid (PH). The prepared Cu-A/P@PH HGs exhibited favorable self-healing performance and ROS-responsive degradation. Upon in situ injection, the Cu-A/P NPs endowed the Cu-A/P@PH HGs with the ability to convert non-toxic DSF into cytotoxic diethyldithiocarbamate (CuET) at the desired tumor site. In addition, under the induction of glutathione (GSH), Cu-A/P NPs gradually released 5-ALA, which was specifically converted into protoporphyrin IX (PpIX) (a photosensitizer) in tumor cells, resulting in irreversible ROS-mediated oxidative damage under 660 nm laser exposure. Our study offers a promising bioorthogonal chemistry-inspired strategy for in situ photodynamic therapy and DSF chemotherapy to treat breast cancer.
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PubMed
高影响因子
Asia-Pacific Journal of Chemical Engineering
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2025
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IF 1.6
Shuai Yan,Xin Pu,Zhiyong Qi,Xiaoran Zhang,Xiaoyu Zhou,Xin Han,Lei Ye,Xinglong Qin,Jichang Liu
m -Cresol and p -cresol cannot be effectively separated using conventional distillation because of their proximate boiling temperatures. This study investigated the adsorption separation of cresol using the short b -axis ZSM-5 synthesized via a urea-assisted method. In contrast to the ellipsoidal HZSM-5, which was approximately 1 μm in length, the thickness of the sheet-like HZSM-5 decreased to 36 nm, resulting in an increase in total cresol adsorption capacity from 76 to 122 mg/g. Applying the CLD method, an increase in the TEOS:HZSM-5 ratio from 0 to 0.83 resulted in the increase in p -cresol adsorption capacity from 69 to 106 mg/g, while m -cresol adsorption capacity dropped from 53 to 12 mg/g. The adsorption selectivity significantly rose from 1.3 to 9.7. The adsorption kinetics and isotherms demonstrated that the process was exothermic for p -cresol and endothermic for m -cresol.
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Science China-Materials
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2023
·Vol. 67
·期 1
·162-169
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IF 8.1
Yang Bixia,Zhu Mengyao,Jiang Xingpeng,Shao Wenlei,Wang Zhiqi,Yan Jiawei,Zheng Yanting,Zhuang Zanyong,Yu Yan
The photooxidation of renewable bioderivatives into value-added chemicals is highly significant; however, it typically exhibits low selectivity owing to the challenges in controlling the oxidative species and managing the desirable reaction pathways. In this work, we used the Bi 2 O 2 CO 3 /ZnIn 2 S 4 heterostructure, prepared by a CO 2 -mediated solid–solid phase transition, to catalyze the photooxidation of bioderived 5-hydroxymethylfurfural (HMF) into 2,5-diformylfuran (DFF) with a high selectivity of 98.1% and a yield rate of 882.6 µmol g −1 h −1 . The metal carbonate/oxide heterointerface enables the effective transfer of photoactive electrons and holes, optimizes surface oxygen activation, and facilitates the synergy of ·OOH and holes to selectively convert HMF into DFF. The findings unravel how the tailoring and coupling of the electron–hole pairs and reactive oxygen species on heterostructured materials can promote the usage of renewable feedstocks for sustainable development.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2023
·Vol. 34
·期 9
·794
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IF 2.8
Li Ji,Xiang Peng,Tan Xinyu,Li Bowen,Zhang Kai,Zhu Ying,Ren Yanqi,Chen Xiaobo
Organic–inorganic lead halide peroxides (OIHPs) have attracted much interest due to their excellent photovoltaic properties, but practical applications are limited by long-term stability and further performance enhancement. Two-dimensional/three-dimensional (2D/3D) heterojunction is a promising strategy to address these issues. Here, short-chain 3,5-dichlorobenzylamine (DBA) with halogen functional groups is introduced to react with excess PbI 2 to form the 2D perovskite layer in mixed perovskite films of Cs 0.05 (FA 0.85 MA 0.15 ) 0.95 Pb(I 0.85 Br 0.15 ) 3 , which passivates surface defects, favours energy band alignment of functional layers and suppresses non-radiative recombination of carriers. As a result, DBA-treated 2D/3D PSCs obtained a champion PCE of 21.54% with an improved open circuit voltage ( V oc ) of 1.171 V. More importantly, the 2D/3D heterojunction can effectively protect the underlying 3D perovskite from moisture ingress. The unencapsulated 2D/3D devices retain 90% of their initial efficiency even after aging at 40 ± 5% RH for 1000 h, while the 3D device retains only 40%.
研究领域:
材料科学
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光伏技术
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纳米结构材料
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表面化学
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能源材料
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Molecular Catalysis
·
2026
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IF 4.3
Tianyi Long,Shulin Cao,Youhua Wang,Fangyuan Zhou,Hongke Zhang,Wanbin Zhu,Hongliang Wang
Derivatization of cellulose remarkably enhances its conversion reactivity. • Cellulose acetate delivers 9.4-fold higher HMF yield than pristine cellulose. • Glycosidic-bond hydrolysis is the rate-limiting step in cellulose conversion. • Structure-reactivity insights enable efficient valorization of cellulose waste to HMF. Native cellulose’s recalcitrant hydrogen-bond network severely limits its efficient conversion to 5-hydroxymethylfurfural, a versatile biobased platform chemical. Chemical modification can disrupt cellulose crystallinity and boost reactivity, but systematic comparisons between esterification and etherification modifications, and the influence of grafted carbon chain length, remain largely unaddressed. This work investigates seven industrially relevant modified celluloses in an AlCl 3 /γ-valerolactone/water biphasic system, integrating reaction screening, structural characterization, density functional theory calculations and kinetic analysis. Cellulose acetate with the shortest acetyl side chain achieves the highest HMF yield of 49.3 mol% at 150 °C, 9.4 times that of native α-cellulose. Kinetic modeling identifies glycosidic bond hydrolysis as the rate-limiting step, with an apparent activation energy of only 46.0 kJ/mol, far below typical values for native cellulose systems. These findings clarify the structure-reactivity relationship and offer a pathway for valorizing modified cellulose wastes. Download: Download high-res image (380KB) Download: Download full-size image
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PLANT AND SOIL
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2026
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IF 4.8
Chen Ji,Wang Yazhuo,Fan Zhongdi,Wang Conghu,Zhang Zihan,Liu Yuting,He Yanhui,Wu Zhansheng
Introduction Plant growth-promoting rhizobacteria (PGPR) colonize the rhizosphere and enhance plant growth, stress tolerance, and soil properties. To better harness these benefits, this study investigates the synergistic interaction between two PGPR strains— Bacillus subtilis SL-44 and Klebsiella oxytoca RS-5—and evaluates their combined effects on rapeseed growth through integrated direct and indirect mechanisms. Methods The plant growth-promoting traits (e.g., phosphate solubilization, siderophore and indole-3-acetic acid (IAA) production) and biofilm-forming capacity of individual strains and their consortium were characterized in vitro. Subsequently, pot experiments were conducted to evaluate their effects on rapeseed growth parameters and rhizosphere soil quality. Finally, the rhizosphere microbial communities were analyzed via high-throughput sequencing on the Illumina NextSeq platform. Results The co-culture consortium (SR) demonstrated synergistic enhancements in key plant growth-promoting traits and biofilm stability in vitro. Pot experiments confirmed that SR treatment most effectively promoted rapeseed biomass accumulation, improved physiological status, and elevated antioxidant capacity. It also optimally enhanced rhizosphere soil nutrient availability, enzyme activities, and selectively reshaped the microbial community by enriching beneficial taxa and increasing ecological network complexity. Ultimately, plant growth promotion was achieved through an integrated mechanism combining direct stimulation and microbiome-mediated soil improvement. Conclusion In summary, this study demonstrates that functional complementarity between PGPR strains drives synergistic growth promotion through combined direct stimulation and rhizosphere microbiome engineering, offering a framework for developing effective microbial consortia for sustainable agriculture. Graphical
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危险品化学品经营许可证（带存储）