Pub Date : 2025-01-27DOI: 10.1016/j.cej.2025.160000
Lizhi Song, Wei-Jing Chen, Jiarui Huang, Dinggen Hu, Xingxiang Ji, Li Hua, Zhaoqing Lu
With the rapid development of intelligent electronic technology, there have been increasing interests and demands of wearable sensors. In this emerging field, some issues of sensing materials are still need to be well-addressed, such as inadequate flexibility, poor biocompatibility, and delamination of conductive components, etc. In this study, a composite ion-conductive hydrogel with incorporated hydroxypropyl cellulose (HPC) was prepared. This composite hydrogel maintains excellent mechanical properties and biocompatibility. Moreover, the hydrogel exhibits zero crosstalk good humidity sensing as well as temperature responsiveness, and effectively avoid signal crosstalk. The hydrogel can accurately detect environmental humidity changes and real-world scenarios like oral respiration through variations in current. Additionally, it can respond to external temperature changes through transparency alterations, while retaining the strain-sensing capabilities of conductive hydrogels, enabling self-adhesive stress–strain sensing. Notably, HPC forms a network structure within the hydrogel system, leveraging its hydrophilic surface groups to enhance the humidity sensing performances. This research explores the structural distribution of HPC within the hydrogel system, offering a novel strategy for the development of HPC-added hydrogel sensors, which hold significant potentials for applications in flexible wearable devices.
{"title":"Conductive hydrogels with HPC additions for humidity sensing and temperature response","authors":"Lizhi Song, Wei-Jing Chen, Jiarui Huang, Dinggen Hu, Xingxiang Ji, Li Hua, Zhaoqing Lu","doi":"10.1016/j.cej.2025.160000","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160000","url":null,"abstract":"With the rapid development of intelligent electronic technology, there have been increasing interests and demands of wearable sensors. In this emerging field, some issues of sensing materials are still need to be well-addressed, such as inadequate flexibility, poor biocompatibility, and delamination of conductive components, etc. In this study, a composite ion-conductive hydrogel with incorporated hydroxypropyl cellulose (HPC) was prepared. This composite hydrogel maintains excellent mechanical properties and biocompatibility. Moreover, the hydrogel exhibits zero crosstalk good humidity sensing as well as temperature responsiveness, and effectively avoid signal crosstalk. The hydrogel can accurately detect environmental humidity changes and real-world scenarios like oral respiration through variations in current. Additionally, it can respond to external temperature changes through transparency alterations, while retaining the strain-sensing capabilities of conductive hydrogels, enabling self-adhesive stress–strain sensing. Notably, HPC forms a network structure within the hydrogel system, leveraging its hydrophilic surface groups to enhance the humidity sensing performances. This research explores the structural distribution of HPC within the hydrogel system, offering a novel strategy for the development of HPC-added hydrogel sensors, which hold significant potentials for applications in flexible wearable devices.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"119 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-27DOI: 10.1016/j.cej.2025.159987
Qibin Xu, Shuan Liu, Ziheng Song, Zizeng Wang, Jun Shi, Huiping Deng, Chun Zhao
Common natural organic matter, such as humic-like substances, proteins, and polysaccharides, cause the irreversible fouling of ultrafiltration (UF) membranes. This study proposes a novel strategy to utilize the common membrane foulants as valuable reagents to synchronously accomplish micropollutant removal and membrane fouling control via a foulant-driven permanganate/peroxymonosulfate (PM/PMS) (FDPP) process. Results show that membranes contaminated with bovine serum albumin (BSA), humic acid (HA), and alginate (SA) can be effectively cleaned within only 6 min with 99.9 %, 97.6 %, and 89.4 % restoration of the permeate flux, respectively. Notably, repeated experiments prove that the flux recovery ratio of membranes is >96 % after 20 recycle fouling-cleaning experiments. Meanwhile, ibuprofen removal rates of 4.9 × 10−2 s−1, 1.8 × 10−2 s−1, and 0.31 × 10−2 s−1 are achieved using the FDPP process with BSA, HA, and SA foulants during filtration, respectively, which were significantly higher than those achieved in the PM/PMS process without foulants. Mechanistic studies show that membrane foulants initiate the decomposition of [MnVII(OOSO3)4]− via electron transfer. This generates a series of reactive species (Mn(V), Mn(VI), SO4•−, and •OH) that effectively oxidize irreversible foulants and micropollutants under spatial nanoconfinement. Moreover, BSA and HA are more beneficial for the generation of reactive species than SA in the FDPP process owing to their electron-rich property. FDPP cleaning consumes less energy and has higher efficiency than NaClO and NaOH cleaning. The proposed FDPP process has a high potential for synchronously removing micropollutants and controlling the irreversible fouling of UF membranes in practice
{"title":"In situ foulant–driven permanganate/peroxymonosulfate process for sustainable membrane fouling control and micropollutant removal","authors":"Qibin Xu, Shuan Liu, Ziheng Song, Zizeng Wang, Jun Shi, Huiping Deng, Chun Zhao","doi":"10.1016/j.cej.2025.159987","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159987","url":null,"abstract":"Common natural organic matter, such as humic-like substances, proteins, and polysaccharides, cause the irreversible fouling of ultrafiltration (UF) membranes. This study proposes a novel strategy to utilize the common membrane foulants as valuable reagents to synchronously accomplish micropollutant removal and membrane fouling control via a foulant-driven permanganate/peroxymonosulfate (PM/PMS) (FDPP) process. Results show that membranes contaminated with bovine serum albumin (BSA), humic acid (HA), and alginate (SA) can be effectively cleaned within only 6 min with 99.9 %, 97.6 %, and 89.4 % restoration of the permeate flux, respectively. Notably, repeated experiments prove that the flux recovery ratio of membranes is >96 % after 20 recycle fouling-cleaning experiments. Meanwhile, ibuprofen removal rates of 4.9 × 10<sup>−2</sup> s<sup>−1</sup>, 1.8 × 10<sup>−2</sup> s<sup>−1</sup>, and 0.31 × 10<sup>−2</sup> s<sup>−1</sup> are achieved using the FDPP process with BSA, HA, and SA foulants during filtration, respectively, which were significantly higher than those achieved in the PM/PMS process without foulants. Mechanistic studies show that membrane foulants initiate the decomposition of [Mn<sup>VII</sup>(OOSO<sub>3</sub>)<sub>4</sub>]<sup>−</sup> via electron transfer. This generates a series of reactive species (Mn(V), Mn(VI), SO<sub>4</sub><sup>•−</sup>, and <sup>•</sup>OH) that effectively oxidize irreversible foulants and micropollutants under spatial nanoconfinement. Moreover, BSA and HA are more beneficial for the generation of reactive species than SA in the FDPP process owing to their electron-rich property. FDPP cleaning consumes less energy and has higher efficiency than NaClO and NaOH cleaning. The proposed FDPP process has a high potential for synchronously removing micropollutants and controlling the irreversible fouling of UF membranes in practice","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"78 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-27DOI: 10.1016/j.cej.2025.160031
Sumanth Ranganathan, Charleson R. Poovaiah, Alankar A. Vaidya, Reid A. Dale, Queenie L. Tanjay, Suren L.J. Wijeyekoon
Woody biomass is a significant resource but is rarely considered as a fermentation feedstock due to its recalcitrance to biological attack. For the first time, the softwood hydrolysate rich in galactoglucomannan hemicelluloses was evaluated as a feedstock for biohydrogen and then biomethane production using an integrated dark fermentation and anaerobic digestion approach. A biohydrogen production rate of 497 mL/L/d was obtained under steady state continuous dark fermentation. The volatile fatty acid rich fermentate produced an additional 426 mL/L/d of biomethane with complete mineralisation of most of the hemicellulose sugars present in softwood hydrolysate. The fermentation inhibitors were 75 % to 85 % metabolised in a mixed culture of organisms acclimatised to biohydrogen production conditions. Genome sequencing revealed 34 % of genome abundance from known H2 producers and 46 % of identified CAZy enzyme abundance are glycosyltransferases that catalyse sugar residues to saccharides. The study demonstrates the future potential of using woody biomass hydrolysates as a fermentation feedstock.
{"title":"Biohydrogen production from hemicellulose rich softwood hydrolysate","authors":"Sumanth Ranganathan, Charleson R. Poovaiah, Alankar A. Vaidya, Reid A. Dale, Queenie L. Tanjay, Suren L.J. Wijeyekoon","doi":"10.1016/j.cej.2025.160031","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160031","url":null,"abstract":"Woody biomass is a significant resource but is rarely considered as a fermentation feedstock due to its recalcitrance to biological attack. For the first time, the softwood hydrolysate rich in galactoglucomannan hemicelluloses was evaluated as a feedstock for biohydrogen and then biomethane production using an integrated dark fermentation and anaerobic digestion approach. A biohydrogen production rate of 497 <!-- --> <!-- -->mL/L/d was obtained under steady state continuous dark fermentation. The volatile fatty acid rich fermentate produced an additional 426 mL/L/d of biomethane with complete mineralisation of most of the hemicellulose sugars present in softwood hydrolysate. The fermentation inhibitors were 75 % to 85 % metabolised in a mixed culture of organisms acclimatised to biohydrogen production conditions. Genome sequencing revealed 34 % of genome abundance from known H<sub>2</sub> producers and 46 % of identified CAZy enzyme abundance are glycosyltransferases that catalyse sugar residues to saccharides. The study demonstrates the future potential of using woody biomass hydrolysates as a fermentation feedstock.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"20 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The environmental impact of petroleum-based plastics has spurred interest in biodegradable alternatives like polyhydroxyalkanoate (PHA). Recycling PHA from saline organic wastewater through mixed culture (MC) processes represents a sustainable waste-to-resource approach. Although it is possible to enrich PHA producers by exploiting characteristics of high salinity that inhibit non-PHA producers, high salinity also inhibits PHA synthesis. Effectively enriching PHA producers under high-salinity conditions without compromising PHA synthesis remains a critical challenge. This study investigated the effects of two salinity regulation strategies, gradient salt addition and direct high salt application, on the enrichment stage of PHA producing MCs. The results show that gradient salinity increase fails to effectively select high-salinity tolerant PHA producers whereas direct high-salinity application strategy proves to be more effective. The enhancement mechanism of PHA synthesis under direct high-salinity application strategy is attributed to increased secretion of electron transfer-related substances in extracellular polymeric substances, along with improved microbial antioxidant capacity, ATP synthesis, electron transfer and quorum sensing, and sustained selective pressure promotes an increased relative abundance of PHA producers. The PHA producing MC enrichment strategy of direct high-salinity application emerges as a superior approach for resource recovery and PHA synthesis in high-salinity organic wastewater, offering a scalable pathway to enhance PHA production, utilize saline waste resources, and mitigate plastic pollution
{"title":"Effects of salinity regulation strategies on the enrichment of polyhydroxyalkanoate (PHA) producing mixed cultures: Microbial community succession and metabolic mechanisms","authors":"Zifan Wang, Zhiqiang Chen, Liang Zhu, Baozhen Liu, Shaojiao Liu, Haolong Huang, Qinxue Wen","doi":"10.1016/j.cej.2025.160001","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160001","url":null,"abstract":"The environmental impact of petroleum-based plastics has spurred interest in biodegradable alternatives like polyhydroxyalkanoate (PHA). Recycling PHA from saline organic wastewater through mixed culture (MC) processes represents a sustainable waste-to-resource approach. Although it is possible to enrich PHA producers by exploiting characteristics of high salinity that inhibit non-PHA producers, high salinity also inhibits PHA synthesis. Effectively enriching PHA producers under high-salinity conditions without compromising PHA synthesis remains a critical challenge. This study investigated the effects of two salinity regulation strategies, gradient salt addition and direct high salt application, on the enrichment stage of PHA producing MCs. The results show that gradient salinity increase fails to effectively select high-salinity tolerant PHA producers whereas direct high-salinity application strategy proves to be more effective. The enhancement mechanism of PHA synthesis under direct high-salinity application strategy is attributed to increased secretion of electron transfer-related substances in extracellular polymeric substances, along with improved microbial antioxidant capacity, ATP synthesis, electron transfer and quorum sensing, and sustained selective pressure promotes an increased relative abundance of PHA producers. The PHA producing MC enrichment strategy of direct high-salinity application emerges as a superior approach for resource recovery and PHA synthesis in high-salinity organic wastewater, offering a scalable pathway to enhance PHA production, utilize saline waste resources, and mitigate plastic pollution","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"40 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-27DOI: 10.1016/j.cej.2025.159902
Hongyun Zhang, Jinyang Dong, Gang Chen, Huiquan Che, Kang Yan, Xi Wang, Jinzhong Liu, Dewang Liu, Yun Lu, Ning Li, Yuefeng Su, Feng Wu, Lai Chen
Lithium-rich manganese-based oxides (LMR) are promising cathode materials for next-generation lithium-ion batteries because of their high capacities, wide voltage ranges, and low production costs. However, irreversible capacity loss, voltage decay, and limited cycling stability impede their practical application. A trifunctional surface modification strategy utilizing a wet treatment technique to co-dope an LMR surface with Al3+ and PO43−, thereby creating oxygen vacancies and promoting a spinel-like phase, was introduced. These modifications enhance the Li+ diffusivity and structural stability and inhibit side reactions. The optimized LMR sample (AP-1.5) demonstrated a reversible capacity of 176.4 mAh/g after 200 cycles at 1C, with a capacity retention of 74.8 %, and delivered 146.5 mAh/g at 10C. Al3+ doping increases the interlayer spacing and Li+ transport, oxygen vacancies improve electrolyte infiltration and activation, and PO43− doping stabilizes the oxygen framework and inhibits gas evolution. This scalable surface-engineering approach controls phase transitions, minimizes electrode degradation, and positions the LMR as a promising candidate for high-energy lithium-ion batteries (LIBs).
{"title":"Trifunctional surface engineering of Lithium-rich manganese-based oxides via Al3+/PO43− co-doping and oxygen vacancy regulation for High-performance lithium-ion batteries","authors":"Hongyun Zhang, Jinyang Dong, Gang Chen, Huiquan Che, Kang Yan, Xi Wang, Jinzhong Liu, Dewang Liu, Yun Lu, Ning Li, Yuefeng Su, Feng Wu, Lai Chen","doi":"10.1016/j.cej.2025.159902","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159902","url":null,"abstract":"Lithium-rich manganese-based oxides (LMR) are promising cathode materials for next-generation lithium-ion batteries because of their high capacities, wide voltage ranges, and low production costs. However, irreversible capacity loss, voltage decay, and limited cycling stability impede their practical application. A trifunctional surface modification strategy utilizing a wet treatment technique to co-dope an LMR surface with Al<sup>3+</sup> and PO<sub>4</sub><sup>3−</sup>, thereby creating oxygen vacancies and promoting a spinel-like phase, was introduced. These modifications enhance the Li<sup>+</sup> diffusivity and structural stability and inhibit side reactions. The optimized LMR sample (AP-1.5) demonstrated a reversible capacity of 176.4 mAh/g after 200 cycles at 1C, with a capacity retention of 74.8 %, and delivered 146.5 mAh/g at 10C. Al<sup>3+</sup> doping increases the interlayer spacing and Li<sup>+</sup> transport, oxygen vacancies improve electrolyte infiltration and activation, and PO<sub>4</sub><sup>3−</sup> doping stabilizes the oxygen framework and inhibits gas evolution. This scalable surface-engineering approach controls phase transitions, minimizes electrode degradation, and positions the LMR as a promising candidate for high-energy lithium-ion batteries (LIBs).","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"148 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-27DOI: 10.1016/j.cej.2025.159991
Kai Zhang, Rui Zhang, Qiguan Wang, Youjun Huang, Qiannan Liang, Guixin Wang, Yuxiao Hu, Ke Qin, Sumin Wang
Loading metal oxides on carbon nanotubes (CNTs) is a commonly used method to enhance the pseudocapacitance (PC) of metal oxides via the improved electrical conductivity. However, the small nanometer-sized tube of CNTs is factually an inaccessible internal channel for the diffusion of large hydrated ions, which reduces the contribution of electric double layer capacitance (EDLC) of CNTs and limits the rate capability of composites. To address this challenge, a 50-nm-diameter channel is here constructed in NiO@nitrogen-containing carbon (NC) by high-temperature calcination of Ni(OH)2/polypyrrole nanotube composite. The large-sized NC channel produced from decomposed polypyrrole significantly boosts the internal accessibility and accelerates the flow and penetration of electrolyte into the NC tube, enhancing the EDLC contribution of NCs and improving rate performance. The obtained worm-like NiO@NC shows high ion diffusion coefficient and impressive specific capacitance (SC). The assembled NiO@NC||graphene aerogel asymmetric supercapacitor offers high EDLC contribution of 65 % and exhibits a high SC of 763F g−1, with outstanding retention of 93.40 % after 50,000 cycles at large current density. This study demonstrates an innovative approach to effectively combat the issue of internal inaccessibility of tubular carbon materials, marking an enormous progression in supercapacitor technology.
{"title":"Boosting internal accessibility via 50-nm-diameter channels in NiO@nitrogen-containing carbon for high rate performance and high contribution of electric double layer capacitance","authors":"Kai Zhang, Rui Zhang, Qiguan Wang, Youjun Huang, Qiannan Liang, Guixin Wang, Yuxiao Hu, Ke Qin, Sumin Wang","doi":"10.1016/j.cej.2025.159991","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159991","url":null,"abstract":"Loading metal oxides on carbon nanotubes (CNTs) is a commonly used method to enhance the pseudocapacitance (PC) of metal oxides via the improved electrical conductivity. However, the small nanometer-sized tube of CNTs is factually an inaccessible internal channel for the diffusion of large hydrated ions, which reduces the contribution of electric double layer capacitance (EDLC) of CNTs and limits the rate capability of composites. To address this challenge, a 50-nm-diameter channel is here constructed in NiO@nitrogen-containing carbon (NC) by high-temperature calcination of Ni(OH)<sub>2</sub>/polypyrrole nanotube composite. The large-sized NC channel produced from decomposed polypyrrole significantly boosts the internal accessibility and accelerates the flow and penetration of electrolyte into the NC tube, enhancing the EDLC contribution of NCs and improving rate performance. The obtained worm-like NiO@NC shows high ion diffusion coefficient and impressive specific capacitance (SC). The assembled NiO@NC||graphene aerogel asymmetric supercapacitor offers high EDLC contribution of 65 % and exhibits a high SC of 763F g<sup>−1</sup>, with outstanding retention of 93.40 % after 50,000 cycles at large current density. This study demonstrates an innovative approach to effectively combat the issue of internal inaccessibility of tubular carbon materials, marking an enormous progression in supercapacitor technology.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"39 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-27DOI: 10.1016/j.cej.2025.159971
Qinghua Zou, Wenhao Yang, Lingkun Wu, Lulu Jiang, Shuaihua Wang, Lang Liu, Renfu Li, Hengyun Ye, Jianrong Li
Hybrid Cu(I)-based halides have been widely studied in the field of optoelectronics due to their outstanding optical properties as well as their remarkable structural diversity, however, the complicated synthetic method and poor stability hampered Cu(I)-based metal halides practical applications. Herein, a new zero-dimensional (0-D) hybrid copper iodide (Cu2I2(3,4-DMP)4 (1, 3,4-DMP = 3,4-Dimethylpyridine) has been synthesized by ionothermal reaction. Under UV irradiation, 1 shows cyan emission with photoluminescence quantum yields (PLQY) as high as 80.07 %. In addition, 1 exhibits high antiwater stability, the photoluminescence (PL) and the radioluminescence (RL) intensity of 1 both above 80 % of the original ones when stored in water for 90 days. At room temperature, 1 shows an effective light yield of 38,031 photons/MeV and a sensitive X-ray response, with a detection limit as low as 106.71 nGy/s, significantly below the dose required for medical diagnostics (5.5 μGy/s). Based on the above excellent performance, (Cu2I2(3,4-DMP)4 can be used as fluorescent inks for aerosol jet printing (AJP). This study provides a new avenue for designing multifunctional materials and application of non-toxic hybrid metal halides.
{"title":"Ionothermal synthesis of a hybrid cuprous(I) iodide scintillator with efficient cyan emission and high antiwater stability","authors":"Qinghua Zou, Wenhao Yang, Lingkun Wu, Lulu Jiang, Shuaihua Wang, Lang Liu, Renfu Li, Hengyun Ye, Jianrong Li","doi":"10.1016/j.cej.2025.159971","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159971","url":null,"abstract":"Hybrid Cu(I)-based halides have been widely studied in the field of optoelectronics due to their outstanding optical properties as well as their remarkable structural diversity, however, the complicated synthetic method and poor stability hampered Cu(I)-based metal halides practical applications. Herein, a new zero-dimensional (0-D) hybrid copper iodide (Cu<sub>2</sub>I<sub>2</sub>(3,4-DMP)<sub>4</sub> (<strong>1</strong>, 3,4-DMP = 3,4-Dimethylpyridine) has been synthesized by ionothermal reaction. Under UV irradiation, <strong>1</strong> shows cyan emission with photoluminescence quantum yields (PLQY) as high as 80.07 %. In addition, <strong>1</strong> exhibits high antiwater stability, the photoluminescence (PL) and the radioluminescence (RL) intensity of <strong>1</strong> both above 80 % of the original ones when stored in water for 90 days. At room temperature, <strong>1</strong> shows an effective light yield of 38,031 photons/MeV and a sensitive X-ray response, with a detection limit as low as 106.71 <em>n</em>Gy/s, significantly below the dose required for medical diagnostics (5.5 μGy/s). Based on the above excellent performance, (Cu<sub>2</sub>I<sub>2</sub>(3,4-DMP)<sub>4</sub> can be used as fluorescent inks for aerosol jet printing (AJP). This study provides a new avenue for designing multifunctional materials and application of non-toxic hybrid metal halides.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"59 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-27DOI: 10.1016/j.cej.2025.159933
Wenhai Wang, Tsuyoshi Minami, Yixiao Sheng, Lun Luo, Yi Ma, Keren Kang, Jufang Wang
An advanced and highly sensitive analytical platform for SARS-CoV-2 is of crucial for public health. In this study, a machine learning-assisted platform that utilizes ratiometric fluorescent paper sensors based on the metal–organic framework Al3+/Au NCs@ZIF-90 was developed for precise and sensitive point-of-care testing (POCT) of SARS-CoV-2. This platform employs RdRp gene-induced hyperbranched rolling circle amplification (HRCA) to produce pyrophosphate (PPi) as a by-product, which triggers fluorescence quenching in ratiometric fluorescent paper sensors. Under ultraviolet (UV) excitation, the blue fluorescence emitted by ZIF-90 within Al3+/Au NCs@ZIF-90 serves as a reference signal, whereas the red fluorescence from Al3+/Au NCs acts as the analytical signal, with the fluorescence intensity being proportional to the PPi concentration. This approach not only ensures achieves high sensitivity but also exhibits a visible change of fluorescence color, achieving a limit of detection (LOD) of 0.3 pM specifically for SARS-CoV-2. By leveraging these distinctive fluorescence signals, the machine learning-assisted platform, which employs the Residual Neural Network (ResNet) algorithm, analyzes fluorescence images to discern SARS-CoV-2 RNA concentrations with an accuracy rate exceeding 99 %. The innovative platform integrates ratiometric fluorescent paper sensors with machine learning, offering a promising solution for point-of-care testing (POCT) of COVID-19 and potentially facilitating the early diagnosis of various diseases.
{"title":"Intelligent quantitative recognition of SARS-CoV-2 using machine learning-based ratiometric fluorescent paper sensors of metal-organic framework Al3+/Au NCs@ZIF-90","authors":"Wenhai Wang, Tsuyoshi Minami, Yixiao Sheng, Lun Luo, Yi Ma, Keren Kang, Jufang Wang","doi":"10.1016/j.cej.2025.159933","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159933","url":null,"abstract":"An advanced and highly sensitive analytical platform for SARS-CoV-2 is of crucial for public health. In this study, a machine learning-assisted platform that utilizes ratiometric fluorescent paper sensors based on the metal–organic framework Al<sup>3+</sup>/Au NCs@ZIF-90 was developed for precise and sensitive point-of-care testing (POCT) of SARS-CoV-2. This platform employs <em>RdRp</em> gene-induced hyperbranched rolling circle amplification (HRCA) to produce pyrophosphate (PPi) as a by-product, which triggers fluorescence quenching in ratiometric fluorescent paper sensors. Under ultraviolet (<em>UV</em>) excitation, the blue fluorescence emitted by ZIF-90 within Al<sup>3+</sup>/Au NCs@ZIF-90 serves as a reference signal, whereas the red fluorescence from Al<sup>3+</sup>/Au NCs acts as the analytical signal, with the fluorescence intensity being proportional to the PPi concentration. This approach not only ensures achieves high sensitivity but also exhibits a visible change of fluorescence color, achieving a limit of detection (LOD) of 0.3 pM specifically for SARS-CoV-2. By leveraging these distinctive fluorescence signals, the machine learning-assisted platform, which employs the Residual Neural Network (ResNet) algorithm, analyzes fluorescence images to discern SARS-CoV-2 RNA concentrations with an accuracy rate exceeding 99 %. The innovative platform integrates ratiometric fluorescent paper sensors with machine learning, offering a promising solution for point-of-care testing (POCT) of COVID-19 and potentially facilitating the early diagnosis of various diseases.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"5 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The plants were suffered from oxidative damage caused by arsenic stress, as a major environmental challenge posing a serious threat to both yield and quality of crops. To tackle this challenge, herein, iron-doped carbon dots (Fe-CDs) nanozyme, synthesized via one-step hydrothermal method, has been reported as a highly active reactive oxygen species targeted (ROS-targeted) scavenger. It effectively alleviated arsenic-induced oxidative stress in lettuce. Fe-CDs nanozyme possessed POD-like, CAT-like, and SOD-like enzymes activity, effectively scavenging a variety of ROS (H2O2, O2•− and ·OH). Electrochemical tests fully validated that its excellent enzymatic activity was attributed to the acceleration of electron transfer and enhancement of catalytic efficiency. Furthermore, theoretical calculations confirmed that iron ions as the catalyst site enhanced the adsorption of Fe-CDs to H2O2 (−0.666 eV) better that of CDs (−0.171 eV), accelerating Fe-CDs nanozyme ROS-targeted scavenging. Based on this, the finding from using Fe-CDs to mitigate arsenic stress in lettuce revealed Fe-CDs nanozyme enabled to effectively exert the role of antioxidant nanozyme to clear excessive accumulated ROS in lettuce. This has successfully reduced the uptake of arsenic by lettuce (decreased arsenic content to 34.7 %), thereby enhancing the stress resistance of lettuce. Laser confocal image have revealed a reduction of 36 % in the average fluorescence intensity of ROS in leaves subsequent Fe-CDs treatment. It was observable that Fe-CDs could be used as a potential antioxidant in ROS scavenging system, vi-a a nanozyme catalytic strategy. The accumulated ROS in biological systems was down-regulated, reducing the abiotic stress in crops consequently. This innovative strategy of designing a nanomaterial specifically engineered to targeted-scavenge the ROS system paves a novel avenue for effectively inhibiting plants’ uptake of arsenic.
{"title":"Iron-doped carbon dots nanozyme scavenged reactive oxygen species system for inhibiting effectively the uptake of arsenic in lettuce","authors":"Meihua Xie, Feiyu Li, Yueying Li, Kaisi Qian, Yeru Liang, Bingfu Lei, Yingliang Liu, Jianghu Cui, Yong Xiao","doi":"10.1016/j.cej.2025.159956","DOIUrl":"https://doi.org/10.1016/j.cej.2025.159956","url":null,"abstract":"The plants were suffered from oxidative damage caused by arsenic stress, as a major environmental challenge posing a serious threat to both yield and quality of crops. To tackle this challenge, herein, iron-doped carbon dots (Fe-CDs) nanozyme, synthesized via one-step hydrothermal method, has been reported as a highly active reactive oxygen species targeted (ROS-targeted) scavenger. It effectively alleviated arsenic-induced oxidative stress in lettuce. Fe-CDs nanozyme possessed POD-like, CAT-like, and SOD-like enzymes activity, effectively scavenging a variety of ROS (H<sub>2</sub>O<sub>2</sub>, O<sub>2</sub><sup>•−</sup> and ·OH). Electrochemical tests fully validated that its excellent enzymatic activity was attributed to the acceleration of electron transfer and enhancement of catalytic efficiency. Furthermore, theoretical calculations confirmed that iron ions as the catalyst site enhanced the adsorption of Fe-CDs to H<sub>2</sub>O<sub>2</sub> (−0.666 eV) better that of CDs (−0.171 eV), accelerating Fe-CDs nanozyme ROS-targeted scavenging. Based on this, the finding from using Fe-CDs to mitigate arsenic stress in lettuce revealed Fe-CDs nanozyme enabled to effectively exert the role of antioxidant nanozyme to clear excessive accumulated ROS in lettuce. This has successfully reduced the uptake of arsenic by lettuce (decreased arsenic content to 34.7 %), thereby enhancing the stress resistance of lettuce. Laser confocal image have revealed a reduction of 36 % in the average fluorescence intensity of ROS in leaves subsequent Fe-CDs treatment. It was observable that Fe-CDs could be used as a potential antioxidant in ROS scavenging system, vi-a a nanozyme catalytic strategy. The accumulated ROS in biological systems was down-regulated, reducing the abiotic stress in crops consequently. This innovative strategy of designing a nanomaterial<!-- --> <!-- -->specifically engineered<!-- --> <!-- -->to targeted-scavenge the ROS system paves a novel avenue for effectively inhibiting plants’ uptake of arsenic.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"5 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-27DOI: 10.1016/j.cej.2025.160007
Ruhao Yang, Danfeng Zhang, Ningpu Li, Haiyan Zhang, Guoxun Zeng, Di Lan
Self-assembly of graphene nanosheets and conversion of biomass materials are two popular strategies in the field of microwave absorption for the development of three-dimensional (3D) foam structures. However, the complexity of their synthetic routes, which involve time-consuming and costly procedures, presents challenges in bridging the gaps between scientific research and practical application. In this study, we employ a nitrate-assisted polymer-bubbling strategy for the synthesis of 3D foamy composites. Solid-state hybrids consisting of metal (i.e., Ce and Co) nitrates and polyvinylpyrrolidone (PVP) serve as the precursors in a one-step annealing treatment. Intriguingly, in the presence of both Ce3+ and Co2+ within these precursors, the nitrogen-doped carbon nanotubes (NCNTs), with metallic Co nanoparticles encapsulated at their tips, are locally grown on the surface of the resultant pyrolyzed products. By augmenting the feeding amount of Co2+ quantitatively, not only are the loading amount and length of NCNTs synchronously reduced, but also there exist disparities in the EM parameters for pyrolyzed products, resulting in their distinguishable EM absorption performances. When the feeding amount of Co2+ is moderate, the sample, denoted as CeO2/C/Co@NCNT-2, demonstrates admirable EM absorption characteristics, including an exceptional minimum RL intensity of − 56.2 dB (2.3 mm) and a spectacular maximum EAB value of 7.3 GHz (2.7 mm), which are owed to the positive interference cancellation phenomenon, favorable multiple-reflection behavior of incident EM waves, and the collaborative contributions of dielectric-magnetic dual losses. Additionally, it also showcases charming characteristics in the aspects of waterproof functionality and thermal insulation.
{"title":"Nitrogen-doped carbon nanotubes-locally-grown three-dimensional CeO2/C/Co foam enabling fabulous hydrophobicity, thermal insulation, and highly efficient microwave absorption","authors":"Ruhao Yang, Danfeng Zhang, Ningpu Li, Haiyan Zhang, Guoxun Zeng, Di Lan","doi":"10.1016/j.cej.2025.160007","DOIUrl":"https://doi.org/10.1016/j.cej.2025.160007","url":null,"abstract":"Self-assembly of graphene nanosheets and conversion of biomass materials are two popular strategies in the field of microwave absorption for the development of three-dimensional (3D) foam structures. However, the complexity of their synthetic routes, which involve time-consuming and costly procedures, presents challenges in bridging the gaps between scientific research and practical application. In this study, we employ a nitrate-assisted polymer-bubbling strategy for the synthesis of 3D foamy composites. Solid-state hybrids consisting of metal (i.e., Ce and Co) nitrates and polyvinylpyrrolidone (PVP) serve as the precursors in a one-step annealing treatment. Intriguingly, in the presence of both Ce<sup>3+</sup> and Co<sup>2+</sup> within these precursors, the nitrogen-doped carbon nanotubes (NCNTs), with metallic Co nanoparticles encapsulated at their tips, are locally grown on the surface of the resultant pyrolyzed products. By augmenting the feeding amount of Co<sup>2+</sup> quantitatively, not only are the loading amount and length of NCNTs synchronously reduced, but also there exist disparities in the EM parameters for pyrolyzed products, resulting in their distinguishable EM absorption performances. When the feeding amount of Co<sup>2+</sup> is moderate, the sample, denoted as CeO<sub>2</sub>/C/Co@NCNT-2, demonstrates admirable EM absorption characteristics, including an exceptional minimum RL intensity of − 56.2 dB (2.3 mm) and a spectacular maximum EAB value of 7.3 GHz (2.7 mm), which are owed to the positive interference cancellation phenomenon, favorable multiple-reflection behavior of incident EM waves, and the collaborative contributions of dielectric-magnetic dual losses. Additionally, it also showcases charming characteristics in the aspects of waterproof functionality and thermal insulation.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"23 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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