New Journal of Chemistry最新文献

{"title":"Expression of concern: Fe3O4/PEG-SO3H as a heterogeneous and magnetically-recyclable nanocatalyst for the oxidation of sulfides to sulfones or sulfoxides","authors":"Saeideh Mirfakhraei, Malak Hekmati, Fereshteh Hosseini Eshbala and Hojat Veisi","doi":"10.1039/D4NJ90142H","DOIUrl":"https://doi.org/10.1039/D4NJ90142H","url":null,"abstract":"<p >Expression of concern for ‘Fe<small>₃</small>O<small>₄</small>/PEG-SO<small>₃</small>H as a heterogeneous and magnetically-recyclable nanocatalyst for the oxidation of sulfides to sulfones or sulfoxides’ by Saeideh Mirfakhraei <em>et al.</em>, <em>New J. Chem.</em>, 2018, <strong>42</strong>, 1757–1761, https://doi.org/10.1039/C7NJ02513K.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/nj/d4nj90142h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Doxorubicin and iron-doped mesoporous silica nanoparticles for chemodynamic therapy and chemotherapy of breast cancer†","authors":"Le Tang, Mingjian Chen, Dan Wang, Yi He, Guili Ge, Zhaoyang Zeng, Jinyong Shu, Wenjia Guo, Steven Xu Wu and Wei Xiong","doi":"10.1039/D4NJ03184A","DOIUrl":"https://doi.org/10.1039/D4NJ03184A","url":null,"abstract":"<p >Breast cancer is one of the most prevalent malignancies, necessitating the exploration of more effective synergistic treatment strategies to overcome the limitations of conventional therapies. Chemodynamic therapy (CDT) is an innovative antitumor approach that can be combined with chemotherapy to achieve potent synergistic effects. Mesoporous silica nanomaterials (MSNs) are ideal drug delivery vehicles in cancer therapy due to their unique advantages. This study presents an effective and straightforward strategy to design an intelligent drug delivery system (DDS) activated by the tumor-specific weakly acidic microenvironment to achieve efficient cancer treatment. By incorporating the chemotherapeutic drug doxorubicin (DOX) and divalent iron (Fe<small>²⁺</small>) into the unique mesoporous channels of MSNs, we fabricated MSNs@Fe<small>²⁺</small>@DOX. Under weakly acidic pH conditions, the functional components Fe<small>²⁺</small> and DOX of MSNs@Fe<small>²⁺</small>@DOX are gradually released at the tumor site. The released Fe<small>²⁺</small> can then consume hydrogen peroxide (H<small>₂</small>O<small>₂</small>) in tumor cells, increasing the levels of reactive oxygen species (ROS) and lipid peroxides through the Fenton reaction, thereby inducing ferroptosis. The combination of DOX-induced apoptosis and ferroptosis results in further enhanced cancer treatment. <em>In vitro</em> and <em>in vivo</em> experiments demonstrated that MSNs@Fe<small>²⁺</small>@DOX had an excellent therapeutic effect on breast cancer cells and tumor-bearing nude mice. We anticipate that this study will provide a promising biotechnological platform for combined breast cancer treatment by inducing CDT and chemotherapy.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adsorption–photocatalytic synergistic removal of MB by peanut shell biochar-supported TiO2/Ce–C3N4 heterojunctions","authors":"Xiao-fang Li, Juan-juan Zhang and Xiao-qiang Feng","doi":"10.1039/D4NJ03455D","DOIUrl":"https://doi.org/10.1039/D4NJ03455D","url":null,"abstract":"<p >Based on the excellent adsorption and electron transfer ability of biochar, the combination of a photocatalyst and biochar is an effective strategy to enhance overall photocatalytic activity. Hence, a series of peanut shell biochar-loaded TiO<small>₂</small>/Ce–C<small>₃</small>N<small>₄</small> heterojunctions were prepared by adjusting the mass ratio of TiO<small>₂</small> and Ce–C<small>₃</small>N<small>₄</small>, and their structure and properties were intensively characterized by applying various advanced techniques. In addition, their photocatalytic degradation activity was investigated using methylene blue solution (MB) as an organic pollutant model under visible light irradiation. Results showed that the photocatalytic activity of BC/TiO<small>₂</small>/Ce–C<small>₃</small>N<small>₄</small> was significantly improved by adsorption–photocatalytic synergic effects. After 30 min of adsorption and 7 min of visible light irradiation, the removal rate for MB reached 100%. The adsorption and photocatalytic degradation processes followed the pseudo-second-order kinetic model and first-order kinetic model, respectively. The rate constant of photocatalytic degradation was 0.3325 min<small>⁻¹</small>, which was 19 times and 16 times that of Ce–C<small>₃</small>N<small>₄</small> and TiO<small>₂</small>, respectively. The introduction of BC and the construction of heterojunctions led to a decrease in the band gap energy of BC/TiO<small>₂</small>/Ce–C<small>₃</small>N<small>₄</small>, which accelerated the separation and migration of photogenerated carriers and effectively inhibited the recombination of photogenerated electron holes. In addition, capture experiments showed that the main active groups for the degradation of MB by BC/TiO<small>₂</small>/Ce–C<small>₃</small>N<small>₄</small> were ˙O<small>₂</small><small>⁻</small> and h<small>⁺</small>, and a possible photodegradation mechanism was proposed for the prepared composites. The significantly strengthened photocatalytic activity and excellent stability make BC/TiO<small>₂</small>/Ce–C<small>₃</small>N<small>₄</small> a promising dual-function composite for affordable, fast and efficient decontamination of MB from wastewater.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Expression of concern: Palladium NPs supported on novel imino-pyridine-functionalized MWCNTs: efficient and highly reusable catalysts for the Suzuki–Miyaura and Sonogashira coupling reactions","authors":"Mehdi Adib, Rahman Karimi-Nami and Hojat Veisi","doi":"10.1039/D4NJ90143F","DOIUrl":"https://doi.org/10.1039/D4NJ90143F","url":null,"abstract":"<p >Expression of concern for ‘Palladium NPs supported on novel imino-pyridine-functionalized MWCNTs: efficient and highly reusable catalysts for the Suzuki–Miyaura and Sonogashira coupling reactions’ by Mehdi Adib <em>et al.</em>, <em>New J. Chem.</em>, 2016, <strong>40</strong>, 4945–4951, https://doi.org/10.1039/C5NJ02842F.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/nj/d4nj90143f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of sulfated lactosyl glycosides for evaluation in vaccine adjuvant formulations†","authors":"Tarasha Sharma, Sophie Régnier, Lise Deschatelets, Felicity C. Stark, Vinicio Vasquez, Camilo F. Martinez-Farina, Renu Dudani, Blair A. Harrison, Bassel Akache, Yimei Jia, Michael J. McCluskie and Usha D. Hemraz","doi":"10.1039/D4NJ03019B","DOIUrl":"https://doi.org/10.1039/D4NJ03019B","url":null,"abstract":"<p >Adjuvants are essential components of vaccines as they enable protection against multiple pathogens by enhancing the duration, magnitude and or quality of immune responses. SLA Archaeosomes, a type of liposome composed of sulfated lactosyl archaeol (SLA) glycolipids, are highly stable vaccine adjuvants that have been shown to induce strong immune responses in preclinical models of infectious disease and cancer. To better understand the mechanism of activity behind SLA archaeosomes strong immunogenic properties, we studied the effect of structural change on vaccine adjuvanticity. Herein, we report the synthesis of three new sulfated lactosyl glycosides (SLGs) by replacing the archaeol moiety with various side-chains. These derivatives were characterized using nuclear magnetic resonance, mass spectrometry, and thin layer chromatography for identity and purity assessment. The SLGs were co-assembled in the presence of DMPC and cholesterol to produce lipid vesicles. The abilities of the SLG-based liposomes to act as vaccine adjuvants were compared to SLA archaeosomes in an <em>in vivo</em> murine vaccine model.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/nj/d4nj03019b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrospun nanofibers of 2D Cr2CTx MXene embedded in PVA for efficient electrocatalytic water splitting†","authors":"Madhushree R., Chaithra K. P., Sunaja Devi K. R. and Vinod T. P.","doi":"10.1039/D4NJ02938K","DOIUrl":"https://doi.org/10.1039/D4NJ02938K","url":null,"abstract":"<p >The usage of transition metal carbide-based electrocatalysts has proven to be an efficient and effective strategy for enhancing the kinetics of water splitting reactions encompassing the generation of hydrogen (hydrogen evolution reaction, HER) and oxygen (oxygen evolution reaction, OER). In this investigation, we have prepared a composite material by integrating Cr<small>₂</small>CT<small>_<em>x</em></small> MXene (derived from Cr<small>₂</small>AlC MAX phase) and polyvinyl alcohol (PVA) through electrospinning technique. Carbonization of the MXene-PVA nanofibers resulted in the formation of Cr<small>₂</small>CT<small>_<em>x</em></small>/carbon nanofiber (Cr<small>₂</small>CT<small>_<em>x</em></small>/CNF) that exhibits high porosity, stability, surface area, and electrocatalytic activity. Systematic examination and optimization for the electrocatalytic water splitting reaction reveales outstanding performance, characterized by substantially lower overpotentials of 265 mV and 250 mV at the constant current density of 10 mA cm<small>⁻²</small> with lower Tafel slope values of 85 mV dec<small>⁻¹</small> and 52 mV dec<small>⁻¹</small> for HER and OER, respectively. Moreover, this work presents a novel strategy for fabricating non-precious electrocatalyst Cr<small>₂</small>CT<small>_<em>x</em></small>/CNF through a cost-effective and straightforward electrospinning and carbonization process, advancing electrocatalytic water splitting applications, especially for oxygen evolution reactions.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of aging on metal oxide-doped fluorophosphate nanopowder","authors":"Sundara Moorthi Ganesan, Ravichandran Kandaswamy, Vijayakumar Chinnaswamy Thangavel and Pugalanthipandian Sankaralingam","doi":"10.1039/D4NJ03631J","DOIUrl":"https://doi.org/10.1039/D4NJ03631J","url":null,"abstract":"<p >The aging behavior of silver and zinc oxide-doped fluorophosphate nanopowders, developed for orthopedic applications, was investigated to address storage stability concerns. Over 12 months, the nanopowders were analyzed using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray analysis (EDX). FTIR revealed a reduction in the O–H peak intensity from 3435 cm<small>⁻¹</small> to 1633 cm<small>⁻¹</small>, indicating absorption of environmental CO<small>₂</small>/moisture and the formation of carbonates or phosphocarbonates. XRD demonstrated new crystalline peaks at 2<em>θ</em> angles of 15° and 30°, confirming crystallization over time. SEM images showed significant crystal growth, particularly after six months, with particles transitioning from amorphous to more crystalline forms. EDX analysis indicated a notable reduction in silver (Ag) and zinc (Zn) peaks, alongside the appearance of sodium (Na), oxygen (O), and carbon (C) peaks, pointing to environmental contamination and oxidation. These findings emphasize the need for vacuum-sealed storage to preserve the structural integrity and extend the shelf life of these nanopowders, enhancing their biomedical applications.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of biobased mildew- and bacterial resistant adhesives through keratin molecule recombination","authors":"Li Feng, Jin Chuan Wu, Yongxiang Wang and Qingxin Li","doi":"10.1039/D4NJ03499F","DOIUrl":"10.1039/D4NJ03499F","url":null,"abstract":"<p >Protein-based adhesives have attracted substantial consideration due to their environmentally friendly advantages and the abundance of functional groups they possess. However, these adhesives suffered from poor properties, including poor bonding strength, low stability, and limited resistance to mildew, which hindered their widespread application in the wood processing sector. In this study, a straightforward and practical strategy for preparing keratin-based wood adhesives was presented. By incorporating hydrogen peroxide, the performance of the fabricated adhesives was significantly reinforced. The adhesion forces between wood substrates reached up to approximately 2.4 and 1.3 MPa under dry and wet conditions, respectively. All components used in the adhesive were derived from biomass and low cost. Furthermore, this keratin-based adhesive demonstrated excellent mildew resistance and bactericidal properties compared to other modified protein adhesives. Therefore, this study proposed an eco-friendly and effective approach to developing high-performance, multifunctional, and fully biobased protein adhesives.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142253103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the aggregation-induced chromic emission of triazine anchored BODIPYs†","authors":"Pranay Satardekar, Vaishali Chaudhari, Zahir Ali Siddiqui, Sushil Lambud, Nagaiyan Sekar, Rajesh Bhosale and Sandeep More","doi":"10.1039/D4NJ03757J","DOIUrl":"10.1039/D4NJ03757J","url":null,"abstract":"<p >BODIPY derivatives based on 2,4,6-trichloro-1,3,5-triazine have been successfully synthesized and characterized. These molecular systems demonstrate restricted intramolecular rotation (RIR) and J-aggregation, leading to aggregation-induced chromic emission (AICE), with notable green-red fluorescence color switching. Additionally, these derivatives exhibit distinctive self-assembly behaviour and solid-state emission properties. These findings showcase their potential for diverse applications across multiple fields.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142253101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the photo-assisted activation of PMS by CuMo1−xWxO4 for degradation of tetracycline†","authors":"Yonglei Xing, Yongqin Chen, Fenyi Tian, Xiaoyong Jin, Hafiz Muhammad Asif Javed and Gang Ni","doi":"10.1039/D4NJ03347G","DOIUrl":"10.1039/D4NJ03347G","url":null,"abstract":"<p >In this study, a series of CuMo<small>_{1−<em>x</em>}</small>W<small>_<em>x</em></small>O<small>₄</small> solid solutions (CMWO) were prepared by adjusting the ratio of Mo to W. The morphology, phase, specific surface area, and valence state of the catalysts were characterized using SEM, TEM, XRD, BET, and XPS analysis. The photoelectric characteristics of the CuMo<small>_{1−<em>x</em>}</small>W<small>_<em>x</em></small>O<small>₄</small> solid solution materials were analyzed in detail using Mott–Schottky, EIS, PL, and UV-vis DRS analysis. The experimental results show that the energy band structure of the CMWO solid solutions can be tuned to inhibit the carrier recombination under light excitation, thereby facilitating effective electron–hole pair separation. This significantly enhances the performance of photo-assisted PMS activation for tetracycline (TC) degradation. The solid solution material CMWO-3, with a Mo/W ratio of 7 : 3, achieved a TC degradation rate of 88% at pH 5. After five cycles, the TC degradation rate remained at 86%. Throughout the reaction process, photocatalysis and PMS activation exhibited a synergistic effect, generating reactive species such as SO<small>₄</small>˙<small>⁻</small>, ˙OH, <small>¹</small>O<small>₂</small>, and ˙O<small>₂</small><small>⁻</small>.</p>","PeriodicalId":95,"journal":{"name":"New Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142253100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}