NEW JOURNAL OF CHEMISTRY
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2023
·Vol. 47
·期 29
·13993-14001
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IF 3.3
Wenhui Wu,Conger Deng,Qian Lei,Honglin Chen
ZSM-5 could be a good candidate for the catalysis of formaldehyde to trioxane (TOX) because of its appropriate and adjustable acid properties. However, the space-time yield (STYTOX) and selectivity of the TOX catalyzed by ZSM-5 zeolites are relatively low at present. [Ga, Al]-MFI zeolites containing different Ga/Al atomic ratios were used as catalysts for reaction of synthetic TOX. The structural information of the materials was illustrated by characterization through XRD, ICP-OES, XPS, SEM, BET analysis, and MAS NMR spectroscopy. And the acid properties of the materials were tested by NH3-TPD and Py-IR. The catalytic performance test showed that the STYTOX of [Ga, Al]-MFI-50 is about twice that of ZSM-50 or [Ga]-MFI-50. And the selectivity of TOX is also significantly improved compared to that with [Al]-MFI-50 and Ga-MFI-50. This is because the introduction of Ga atoms into ZSM-5 causes the Brønsted acid content to rise, resulting in STYTOX. It is worth noting that adjusting the Ga/Al atom ratio in the framework affects the B/L value of the zeolite, which leads to the optimization of the selectivity.
研究领域:
化学工程
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催化科学
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DOI
高影响因子
Materials
·
2023
·Vol. 16
·期 15
·5312
·
IF 3.4
Yong Chen,Youping Gong,Lijun Shan,Chou Yong Tan,MS Al-Furjan,S. Ramesh,Huipeng Chen,Xiangjuan Bian,Yanda Chen,Yunfeng Liu,Rougang Zhou
Cartilage damage is difficult to heal and poses a serious problem to human health as it can lead to osteoarthritis. In this work, we explore the application of biological 3D printing to manufacture new cartilage scaffolds to promote cartilage regeneration. The hydrogel made by mixing sodium alginate (SA) and gelatin (GA) has high biocompatibility, but its mechanical properties are poor. The addition of hydroxyapatite (HA) can enhance its mechanical properties. In this paper, the preparation scheme of the SA-GA-HA composite hydrogel cartilage scaffold was explored, the scaffolds prepared with different concentrations were compared, and better formulations were obtained for printing and testing. Mathematical modeling of the printing process of the bracket, simulation analysis of the printing process based on the mathematical model, and adjustment of actual printing parameters based on the results of the simulation were performed. The cartilage scaffold, which was printed using Bioplotter 3D printer, exhibited useful mechanical properties suitable for practical needs. In addition, ATDC-5 cells were seeded on the cartilage scaffolds and the cell survival rate was found to be higher after one week. The findings demonstrated that the fabricated chondrocyte scaffolds had better mechanical properties and biocompatibility, providing a new scaffold strategy for cartilage tissue regeneration.Keywords:3D bioprinting;additive manufacturing;cartilage regeneration;cartilage tissue engineering scaffold;finite element method
研究领域:
生物医学工程
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组织工程
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DOI
PubMed
高影响因子
BIOORGANIC CHEMISTRY
·
2021
·
IF 5.275
Qinxiang Zheng,Feng Ding,Xiaojuan Hu,Jiayao Feng,Jianliang Shen,Xiaojun He
Aluminum (Al), gallium (Ga), indium (In) are three essential elements in group IIIA of the periodic table, which all share similar chemical properties and are also vital in many aspects of bio- and environmental systems. Proper control of their levels is thus necessary as overexposure to them has been linked to onsets of many diseases. Fluorescence based molecular probes have always been the driving horse for detecting vital ions including group IIIA ions. However, only a few such probes have been reported so far and all of them are faced with one or more shortcomings such as not very high sensitivity, incapability to detect multiple ions simultaneously, and poor cell penetration abilities due to emitted fluorescence at shorter wavelengths. To meet those challenges, we herein presented the successful development and application of a novel group IIIA ions fluorescent probe, NBD-hnap , in live RAW264.7 cell and zebrafish models, especially the imaging of ocular tumor cell OCM-1 (human choroid melanoma cells). NBD-hnap was synthesized by a simple conjugation of NBD and hnap molecules under suitable conditions. Subsequent experimental analysis and theoretical calculations confirmed that NBD-hnap forms a 1:1 chelate with each of three selected group IIIA ions. Further evaluation proved that NBD-hnap can realize highly sensitive [LODs of 113, 82 and 150 nM for Al(III), Ga(III), and In(III) respectively in aqueous solutions] and highly selective (over a dozen of interfering cations) through an ESIPT-based fluorescent sensing mechanism with strong far-red emission around 640 nm. Those value merits make NBD-hnap superior to other group IIIA ion probes reported before and NBD-hnap is thus expected to find wider and greater applications in the near future.
研究领域:
分析化学
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生物医学工程
·
环境科学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2019
·Vol. 20
·期 11
·2694
·
IF 4.183
Wenqi Li,Yubing Yong,Yue Zhang,Yingmin Lyu
Background: The LA hybrid lily ‘Aladdin’ has both excellent traits of Longiflorum hybrids and Asiatic hybrids—such as big and vivid flower, strong stem, high self-propagation coefficient, and shorter low temperature time required to release bulb dormancy in contrast to Oriental hybrids. A genome-wide transcriptional analysis using transcriptome RNA-Seq was performed in order to explore whether there is a gibberellin floral induction pathway in the LA hybrid lily. Subsequently, gene co-expression network analysis was used to analyze the possible interactions of key candidate genes screened from transcriptome data. At the same time, a series of physiological, biochemical, and cultivation tests were carried out. Results: The content of five endogenous hormones changed sharply in the shoot apex during the treatment of 200 mg/L exogenous gibberellin and the ratio of ABA/GA3dropped and stayed at a lower level after 4 hours’ treatment from the higher levels initially, reaching a dynamic balance. In addition, the metabolism of carbohydrates in the bulbs increase during exogenous gibberellin treatment. A total of 124,041 unigenes were obtained by RNA-seq. With the transcriptome analysis, 48,927 unigenes and 48,725 unigenes respectively aligned to the NR database and the Uniprot database. 114,138 unigenes, 25,369 unigenes, and 19,704 unigenes respectively aligned to the COG, GO, and KEGG databases. 2148 differentially expression genes (DEGs) were selected with the indicators RPKM ≥ 0, FDR ≤ 0.05 and |log2(ratio)| ≥ 2. The number of the upregulated unigenes was significantly more than the number of the downregulated unigenes. Some MADS-box genes related to flowering transformation—such asAGL20,SOC1, andCO—were found to be upregulated. A large number of gibberellin biosynthesis related genes such asGA2ox,GA3ox,GA20ox,Cytochrome P450,CYP81, and gibberellin signal transduction genes such asDELLA,GASA, andGID1were significantly differentially expressed. The plant hormones related genes such asNCED3and sugar metabolism related genes such asα-amylase,sucrose synthase hexokinase, and so on were also found expressing differentially. In addition, stress resistance related genes such asLEA1,LEA2,LEA4,serine/threonine protein kinase,LRR receptor-like serine/threonine protein kinase,P34 kinase,histidine kinase 3and epigenetic related genes in DNA methylation, histone methylation, acetylation, ubiquitination of ribose were also found. Particularly, a large number of transcription factors responsive to the exogenous gibberellin signal includingWRKY40, WRKY33, WRKY27, WRKY21, WRKY7, MYB, AP2/EREBP, bHLH, NAC1, NAC2, andNAC11were found to be specially expressing. 30 gene sequences were selected from a large number of differentially expressed candidate genes for qRT-PCR expression verification (0, 2, 4, 8, and 16 h) and compared with the transcriptome expression levels. Conclusions: 200mg/L exogenous GA3can successfully break the bulb’s dormancy of the LA hybrid lily and significantly accelerated the flowering process, indicating that gibberellin floral induction pathway is present in the LA lily ‘Aladdin’. With the GCNs analysis, two second messenger G protein-coupled receptor related genes that respond to gibberellin signals in the cell were discovered. The downstream transport proteins such asAMT,calcium transport ATPase, andplasma membrane ATPasewere also discovered participating in GA signal transduction. Transcription factors includingWRKY7,NAC2,NAC11, andCBFspecially regulated phosphorylation and glycosylation during the ubiquitination degradation process ofDELLAproteins. These transcription factors also activated in abscisic acid metabolism. A large number of transcription factors such asWRKY21,WRKY22,NAC1,AP2,EREB1,P450, andCYP81that both regulate gibberellin signaling and low-temperature signals have also been found. Finally, the molecular mechanism of GA floral induction pathway in the LA hybrid lily ‘Aladdin’ was constructed.Keywords:GA floral induction pathway;LA hybrid lily;transcriptome RNA-Seq;GCN;qRT-PCR
研究领域:
植物学
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遗传学
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分子生物学
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植物生理学
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DOI
PubMed
高影响因子
Research
·
2026
·
IF 10.7
Pengkun Yang,Zijuan Hu,Qingyu Wang,Binqian Liu,Mengyang Cao,Lu Huang,Peng Liang,Yingpeng Wu
Traditional solid metal catalysts in organic reaction have been hindered by drawbacks, including limited surface catalytic region, restricted reactant diffusion, catalyst deactivation, low atom utilization efficiency, and harsh reaction condition. To overcome these drawbacks, we introduce liquid metal into organic reaction. An efficient mechano-assisted reaction system was proposed integrating dynamic metal catalyst and liquid metal reaction medium. With a low-energy ball-milling process (at a speed of 270 rad·min −1 ), the dynamic metal atoms in liquid state could achieve maximum atomic utilization and fast reaction kinetics compared to solid metal. Furthermore, liquid metal also act as reaction media. It not only offers a homogeneous electron-rich environment for reactants but also continuously disperses active metals to construct a multimetal catalytic system in one step. These would revolutionize the understanding of metal catalysts and reaction media, providing a novel platform for exploration of high-throughput catalysis and discovery of novel chemical reaction in future.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Jiaxin Luo,Yihui Wu,Shixing Wang,Rong Zhu,Yuefeng Chen,Xinrui Yang,Guowei Luo,Xinni Tang,Libo Zhang
Gallium is a critical metal with low natural abundance, making its selective enrichment and separation essential for recycling. This study developed a crosslinked pyrogallol resin (PGNR) as a selective and reusable adsorbent for Ga(III) extraction. Under optimal conditions (318 K, pH = 9.0), PGNR achieved a maximum adsorption capacity of 89.3 mg·g - 1 . PGNR exhibited excellent selectivity, maintaining high efficiency even in multi-component systems containing As(V), Ca(II), and V(V). Notably, PGNR effectively mitigated V(V) interference, selectively adsorbing Ga(III) even when the V(V) concentration exceeded that of Ga(III) by more than fivefold. Reusability tests confirmed its practical value, with PGNR retaining over 85% of its adsorption capacity after five adsorption–desorption cycles. Isotherm analysis indicated monolayer adsorption consistent with the Langmuir model, while thermodynamic results confirmed the process was spontaneous and endothermic. Kinetic studies showed that the adsorption followed a pseudo-second-order model, dominated by chemisorption. FT-IR, XPS, and DFT analyses revealed that Ga(III) adsorption involved coordination with surface –OH groups and electrostatic interactions. These findings demonstrate that PGNR is a promising, efficient, and recyclable material for sustainable gallium extraction, particularly in challenging industrial environments such as Bayer liquor processing.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Dong Li,Xumin Wang,Tiantian Liu,Yaping Song,Yujiao Song,Shuhan Yu,Xin Liu,Han Wang,Yingjie Wang,Jianchao Cui,Limin Wang,Da Zhang,Hongxia Zhang
Arabidopsis R-R-type MYB-like transcription factors AtDIV1 and AtDIV2 (DIVARICATAs) act as critical participants in response to salinity stress. However, their functions in flowering transition are unknown. Here, we reported the function of AtDIV1 in flowering regulation. Protein sequence and 3D structure comparison showed that AtDIV1 was highly conserved, and contained two MYB-like DNA binding domains and one typical 'SHAQKYF/Y' motif. Expression pattern analyses exhibited that AtDIV1 was highly expressed at the bolting stage in Arabidopsis. Overexpression of AtDIV1 in Arabidopsis promoted the flowering of transgenic plants, whereas mutation of AtDIV1 postponed the flowering of div1-1 and div1-2 mutants. Transcriptome analyses revealed that a number of plant hormone and flowering associated genes were up- or down-regulated in transgenic plants. ChIP and EMSA analyses demonstrated that AtDIV1 directly bound to the promoter regions of TEM1 , SOC1 and GA3ox1 . Further growth experiments in AtDIV1 transgenic plants and div1-1 mutant demonstrated that the content of GA in them was respectively increased and decreased, and the promoted and postponed flowering of them could be respectively rescued with the exogenous application of GA 3 and GA biosynthesis inhibitor paclobutrazol. Our results provide insights into the regulatory mechanism of AtDIV1 mediated flowering via GA signalling pathway in Arabidopsis.
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PubMed
高影响因子
ACS Nano
·
2026
·
IF 16
Xiulin Xie,Gaoyu Liu,Yu Zhang,Yiqing Yang,Wentao Niu,Ouyang Lin,Yangyang Bian,Jin Lu,Shengli Zhang,Aiwei Tang
I–III–VI group semiconductor nanocrystals (NCs) with narrow-bandwidth emission have emerged as promising candidates for display technologies due to their tunable emission wavelength and eco-friendly composition. Herein, Ga-rich Ag–In–Ga–S (AIGS) NCs exhibited a narrow photoluminescence emission with a full width at half maximum (fwhm) of 29 nm, which was derived from In-rich Ag–In–Ga–S NCs with an fwhm of 113 nm via a cation exchange strategy. The evolution process was studied systematically using steady- and transient-state spectroscopic techniques, revealing that the narrow photoluminescence (PL) bandwidth primarily originated from free-to-bound radiative recombination. The result was consistent with first-principles calculations. Furthermore, the electroluminescent devices based on AIGS NCs showed a record narrow electroluminescent bandwidth of less than 30 nm, and the maximum external quantum efficiency (EQE) could reach up to 1.2%.
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DOI
PubMed
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.7
Zhaoshuo Ge,Lixia Bao,Yangping Lv,Yiheng Wu,Daxin Shi,Qi Liu,Qin Wu,Kangcheng Chen,Guiyuan Jiang,Hansheng Li,Yaoyuan Zhang
Light alkane aromatization represents a pivotal catalytic process for valorizing abundant light alkanes into high-value aromatics, holding significant industrial promise. Herein, a series of Ga-HZSM-5 catalysts were synthesized by the hydrothermal method. The effects of Ga content and Si/Al ratio on the catalytic performance of propane aromatization over Ga-HZSM-5 were investigated to discern the structure-activity relationship, reaction pathway, and coke formation. The optimized 1%Ga-HZSM-5(50) catalyst exhibited superior performance, with propane conversion and BTX formation showing a volcano-shaped trend with increasing Ga content. Conversely, for a fixed Ga loading, aromatization performance was enhanced with decreasing Si/Al ratio, with 1%Ga-HZSM-5(25) delivering the highest aromatization activity. A positive correlation was identified between catalytic activity and Lewis acid density, underscoring the role of Lewis sites in facilitating propane dehydrogenation and subsequent BTX formation. Furthermore, TG and TPO analyses revealed that the deposited coke in Ga-HZSM-5 was predominantly highly graphitized, which could not be removed by the air-regeneration treatment under reaction temperature.
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DOI
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Chengbo Li,Haipeng Zhou,Yuxue Chen,Jinfeng Liu,Xiu Zhu,Guisheng Xu,Jiankang Wang
Birefringent crystals capable of modulating light polarization represent a frontier of the current research. While numerous oxide crystals are well-established for UV and visible applications, their counterparts operating effectively in the infrared spectral region remain scarce. Here, two novel olivine-type sulfides, CaYIIIS4 (III = Ga, In), have been successfully synthesized, crystallizing in the orthorhombic Pnma space group. Their structure comprises a three-dimensional [CaYS10] framework formed by interconnected CaS6 and YS6 octahedra, with GaS4/InS4 tetrahedra embedded within the network. Characterization reveals that these compounds exhibit wide band gaps (3.2 and 2.9 eV), broad optical transmission extending to ∼ 20 μm, and significant birefringence (0.16 at 532 nm), establishing their promise as infrared birefringent crystals. Structure–property analysis demonstrates that distorted structural motifs and mixed-dimensional architectures synergistically enhance material birefringence. These studies will facilitate the exploration of new IR birefringent crystals.
研究领域:
材料科学
·
光学
·
无机化学
·
晶体学
·
光子学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Rongkai Du,Xulin He,Yuefei Xiang,Junfu Tang,Lei Zhou,Juncheng Zhang,Tianying Sun,Mingmei Wu
The development of self-powered and non-pre-irradiation mechanoluminescent (ML) materials holds significant promise for achieving dynamic and real-time visualized stress distribution display. In this work, isomorphic ML materials Sr 3 MO 4 F:Ln 3+ (M = Al, Ga) were synthesized that exhibit repeatable ML without the need for pre-irradiation. These materials present non-piezoelectric and non-trap-controlled ML behaviors, resulting from contact electrification due to the interaction between phosphor and polydimethylsiloxane polymer under stress. Given the similar crystal structures and spectral properties, we substitute the complex measurements of electron transfer in the contact electrification process with straightforward theoretical modeling and calculations to elucidate the origins, mechanisms, and processes of interfacial triboelectrification-induced ML behaviors between Sr 3 MO 4 F phosphors and PDMS polymers. The experiments and density functional theory (DFT) calculations indicate a positive correlation among transferred charge, surface triboelectric potential, and ML intensity. This work not only introduces a new class of ML materials but also makes an effort at establishing and harmonizing the structure-performance relationships for triboelectrification-induced ML materials.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
FUEL
·
2020
·
IF 5.578
Chenyao Bi,Xu Wang,Qing You,Baoyu Liu,Zhuo Li,Jianbo Zhang,Qingqing Hao,Ming Sun,Huiyong Chen,Xiaoxun Ma
Five MFI-type zeolite catalysts, which were aluminosilicate ZSM-5 (Z5), gallium-substituted silicalite-1 (Ga-S1), mesoporous ZSM-5 (MZ5), gallium-substituted mesoporous silicalite-1 (Ga-MS1) and gallium-substituted mesoporous ZSM-5 (Ga-MZ5), were hydrothermally synthesized with combined using of TPAOH and TPOAC as micropore and mesopore structure-directing agents respectively, followed by the application in the catalytic upgrading of volatiles from low-rank coal fast pyrolysis. The obtained results indicated that significant improvements with the yield of high value-added products of BTEXN (benzene, toluene, ethylbenzene, xylene and naphthalene) increased from 5.4 mg.g −1 to 11.9–26.4 mg.g −1 , as well as the content of light fractions (<300 °C) in coal tars increased from 51% to 65–88% were realized by using the representative MFI-type zeolite catalysts in contrast to non-catalyst pyrolysis. Moreover, the possible mechanism for catalytic upgrading over the best-performing catalyst of gallium-substituted mesoporous ZSM-5 (Ga-MZ5) with the highest yield of aromatics and effective reduction of phenols was proposed on the basis of systematic comparison of structural features and catalytic performances of various MFI-type zeolite catalysts and fundamental study of the synergetic effects dominated by acidity, ratio of Brønsted/Lewis acid sites, intra-/extra-framework gallium species and hierarchical meso-/microporosity.
研究领域:
能源化学
·
催化材料科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）