ACS Sustainable Resource Management最新文献

{"title":"There and Back Again: Recovery of Terephthalic Acid from Enzymatically Hydrolyzed Polyesters for Resynthesis.","authors":"Chiara Siracusa, Virginia Celestre, Felice Quartinello, Giacomo Damonte, Jeppe Madsen, Georg M Guebitz, Anders Egede Daugaard, Alessandro Pellis","doi":"10.1021/acssusresmgt.4c00430","DOIUrl":"10.1021/acssusresmgt.4c00430","url":null,"abstract":"<p><p>Poly(ethylene terephthalate) (PET) is still a major player in the plastics industry, especially for packaging. Despite attempts to derive its basic components from biological resources, production of terephthalic acid (TPA), one of the two PET monomers, still depends on fossil resources. Alongside traditional polyesters, TPA is a building block also for biodegradable polymers, such as poly(1,4-butylene adipate-<i>co</i>-1,4-butylene terephthalate) (PBAT). Here, PET, PBAT, and real plastic waste were successfully depolymerized using <i>Humicola insolens</i> cutinase as an environmentally friendly alternative to mechanical or chemical treatments allowing recovery of TPA even from mixed plastic waste. This monomer was isolated in high purity upon acidification as confirmed by using Fourier Transform-Infrared Spectroscopy, ¹H-NMR spectroscopy, and Thermogravimetric analysis. Consequently, contaminants or residual buffer salts caused major issues during synthesis of PET precursors upon reaction with ethylene glycol (EG) and TPA. The recovered TPA was used to prepare bis(hydroxyethyl) terephthalate (BHET) and further repolymerized to PET. The resulting molecular weight of the polyesters was found to be dependent on the purity of the TPA and on the catalyst used.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 2","pages":"334-342"},"PeriodicalIF":0.0,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11874462/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143560524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"There and Back Again: Recovery of Terephthalic Acid from Enzymatically Hydrolyzed Polyesters for Resynthesis","authors":"Chiara Siracusa,&nbsp;Virginia Celestre,&nbsp;Felice Quartinello,&nbsp;Giacomo Damonte,&nbsp;Jeppe Madsen,&nbsp;Georg M. Guebitz,&nbsp;Anders Egede Daugaard* and Alessandro Pellis*,&nbsp;","doi":"10.1021/acssusresmgt.4c0043010.1021/acssusresmgt.4c00430","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00430https://doi.org/10.1021/acssusresmgt.4c00430","url":null,"abstract":"<p >Poly(ethylene terephthalate) (PET) is still a major player in the plastics industry, especially for packaging. Despite attempts to derive its basic components from biological resources, production of terephthalic acid (TPA), one of the two PET monomers, still depends on fossil resources. Alongside traditional polyesters, TPA is a building block also for biodegradable polymers, such as poly(1,4-butylene adipate-<i>co</i>-1,4-butylene terephthalate) (PBAT). Here, PET, PBAT, and real plastic waste were successfully depolymerized using <i>Humicola insolens</i> cutinase as an environmentally friendly alternative to mechanical or chemical treatments allowing recovery of TPA even from mixed plastic waste. This monomer was isolated in high purity upon acidification as confirmed by using Fourier Transform-Infrared Spectroscopy, ¹H-NMR spectroscopy, and Thermogravimetric analysis. Consequently, contaminants or residual buffer salts caused major issues during synthesis of PET precursors upon reaction with ethylene glycol (EG) and TPA. The recovered TPA was used to prepare bis(hydroxyethyl) terephthalate (BHET) and further repolymerized to PET. The resulting molecular weight of the polyesters was found to be dependent on the purity of the TPA and on the catalyst used.</p><p >This work describes the enzymatic depolymerization of two different polyesters (poly(ethylene terephthalate) and poly(1,4-butylene adipate-<i>co</i>-1,4-butylene terephthalate)) and the subsequent recovery of terephthalic acid in a suitable purity for resynthesis of PET.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 2","pages":"334–342 334–342"},"PeriodicalIF":0.0,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acssusresmgt.4c00430","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon Footprint of Biochar from Forest Harvest Residues as a Substitute for Coal during Steel Production","authors":"Sabrina M. Desjardins*,&nbsp;Michael T. Ter-Mikaelian and Jiaxin Chen,&nbsp;","doi":"10.1021/acssusresmgt.4c0026310.1021/acssusresmgt.4c00263","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00263https://doi.org/10.1021/acssusresmgt.4c00263","url":null,"abstract":"<p >Reducing industry’s reliance on coal has been a main objective in achieving short- to mid-term climate targets. Biochar, a pyrolysis byproduct, has the potential to substitute coal and can be produced using numerous feedstocks. Forest harvest residues are an abundant resource in Ontario, Canada, and have been shown to be reliable feedstocks for pyrolysis. The goal of this study was to quantify the carbon footprint of biochar from forest harvest residues for use in the steel industry. Biochar created from forest harvest residues from slash piles that were originally meant to undergo controlled burn reduced CO₂-equivalent (CO₂eq) emissions (-3.1 kgCO₂eq kg_steel^–1) immediately relative to the business-as-usual scenario. However, when using forest harvest residues from slash piles that would normally decay over time in the forest, the time to carbon neutrality was 75 years. On the other hand, time to carbon neutrality was longer than 100 years when using forest harvest residues collected from the forest floor where they are scattered during cut-to-length/tree-length harvesting.</p><p >Depending on forest management practices, biochar produced using forest harvest residues has the potential to reduce greenhouse gas emissions from the steel industry.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 2","pages":"243–255 243–255"},"PeriodicalIF":0.0,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acssusresmgt.4c00263","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oceanic Biodegradation Mechanisms of Chemosynthetic Biodegradable Polyesters: Focusing on Poly(butylene succinate-co-adipate)","authors":"Miwa Suzuki,&nbsp;Shun’ichi Ishii*,&nbsp;Kohei Gonda,&nbsp;Hiroyuki Kashima,&nbsp;Shino Suzuki,&nbsp;Katsuyuki Uematsu,&nbsp;Takahiro Arai,&nbsp;Yuya Tachibana,&nbsp;Tadahisa Iwata and Ken-ichi Kasuya*,&nbsp;","doi":"10.1021/acssusresmgt.4c0044010.1021/acssusresmgt.4c00440","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00440https://doi.org/10.1021/acssusresmgt.4c00440","url":null,"abstract":"<p >To address marine plastic pollution, biodegradable plastics have been proposed. However, chemosynthetic biodegradable polyesters exhibit lower marine biodegradability than biosynthetic polyesters, limiting their utility. We elucidated why chemosynthetic polyesters exhibit this lower biodegradability, using an <i>in situ</i> metatranscriptomic approach to identify the microbial communities on the plastics (plastisphere) and enzymes involved in polyester degradation. We compared the oceanic biodegradation rates of three chemosynthetic polyesters, poly(butylene succinate-<i>co</i>-adipate), poly(butylene succinate), and poly(lactic acid), with that of a biosynthetic polyester, poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate). The highest rate was observed in poly(3-hydroxybutyrate-<i>co</i>-3-hydroxyvalerate), whose plastisphere contained many degraders encoding poly(3-hydroxybutyrate) depolymerases. In contrast, two distinct Gammaproteobacteria were dominant and actively transcribed within the poly(butylene succinate-<i>co</i>-adipate) plastispheres; one highly expressed polyesterases for degrading the polyester and the other expressed alcohol and aldehyde dehydrogenases for consuming degradation products. Specific microbial members did not accumulate in the poly(butylene succinate) and poly(lactic acid) plastispheres. Considering the limitation of chemosynthetic polyester degraders in the ocean, effective enrichment of both polyester and monomer degraders will accelerate the biodegradation process via a harmonious metabolic network in the chemosynthetic polyester plastispheres. These findings offer new insights into strategies for enhancing the degradation of chemosynthetic polyesters in marine environments.</p><p >A chemosynthetic biodegradable polyester, poly(butylene succinate-<i>co</i>-adipate), biodegrades slowly in marine environments. This study identifies microbial and enzymatic factors limiting this process, providing insights to enhance marine biodegradation.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 2","pages":"343–353 343–353"},"PeriodicalIF":0.0,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acssusresmgt.4c00440","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nickel-Decorated Dendritic Silica with Hierarchical Mesoporosity from Rice Husk Waste: A Sustainable Approach for Low-Pressure Reversible H2 Storage","authors":"Amanuel Gidey Gebretatios,&nbsp;Fawzi Banat,&nbsp;Thongthai Witoon and Chin Kui Cheng*,&nbsp;","doi":"10.1021/acssusresmgt.4c0037210.1021/acssusresmgt.4c00372","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00372https://doi.org/10.1021/acssusresmgt.4c00372","url":null,"abstract":"<p >This study presents a sustainable approach for low-pressure reversible H₂ storage using nickel-decorated dendritic silica with hierarchical mesoporosity (DHMS-RHA) derived from rice husk waste. DHMS-RHA was prepared using rice husk as a renewable silica precursor and decorated with various loadings of non-precious Ni metal for spillover-assisted H₂ storage. The prepared DHMS-RHA exhibited a well-defined dendritic morphology, as revealed by SEM and TEM images, and excellent textural properties, with a BET-specific surface area of 701.6 m²/g and a total pore volume of 0.91 cm³/g. The dendritic silica with an optimum initial Ni loading of 10 wt % (DHMS-RHA-Ni10) demonstrated an H₂ uptake capacity of 0.128 wt % at 298 K and 1 bar. Given that DHMS-RHA-Ni10 exhibited a lower specific surface area (439.7 m²/g) compared to DHMS-RHA, this suggests that under low-pressure conditions, H₂ affinity and micropore volume have a more pronounced effect on enhancing H₂ adsorption than specific surface area. The isosteric heats of adsorption for the parent DHMS-RHA and DHMS-RHA-Ni10 ranged from 6.2 to 8.1 kJ/mol and 9.7 to 24.8 kJ/mol, respectively, indicating a physisorption adsorption mechanism. The excellent H₂ adsorption-desorption reversibility under mild conditions and stable cycling performance over five consecutive cycles further supported this finding. This study demonstrates the potential of developing dendritic silica from renewable silica precursors and decorating it with inexpensive metal nanoparticles to enhance H₂ storage.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 2","pages":"284–293 284–293"},"PeriodicalIF":0.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Primary Sludges Drive the Scalability and Power Production of Hydrothermal Liquefaction for Energy Resource Recovery at Wastewater Treatment Facilities","authors":"Carl Abadam*,&nbsp;Alejandro Espino,&nbsp;Katelin Fisher,&nbsp;Derek Belka,&nbsp;Rui Liu and Anjali Mulchandani,&nbsp;","doi":"10.1021/acssusresmgt.4c0036810.1021/acssusresmgt.4c00368","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00368https://doi.org/10.1021/acssusresmgt.4c00368","url":null,"abstract":"<p >This research assesses the impact of wastewater sludges from different treatment stages and facility scales on the biocrude power potential from hydrothermal liquefaction (HTL). HTL offers a promising method for energy resource recovery through biocrude production, yet its viability for smaller facilities [&lt;1 million gallons per day (MGD)] remains uncertain. Sludges from facilities of varying scales (0.8, 13, and 76 MGD) were analyzed. We found that the treatment stage influences the energy content and chemical composition more than the facility scale. HTL experiments showed that primary sludges (PS) yield more biocrude than waste-activated sludges (WAS); however, the carbon fractionation remained similar across facility scales. The power generated by PS converted to biocrude was 1.05–1.55 times higher than that if it were converted to methane. Meanwhile, WAS resulted in lower power generation from biocrude than methane. At small plants where primary treatment is not incorporated, HTL is not an ideal energy recovery technology, and instead other waste-management solutions might be better explored. This study emphasizes applying HTL only at plants where it can be truly viable for matching or exceeding the power consumption by evaluating HTL in the context of practical wastewater treatment parameters, e.g., treatment flow, sludge density, energy density, and the realistic conversion potential for energy resource recovery technologies.</p><p >This study highlights the importance of the sludge quantity and quality in determining the scalability of sustainable energy resource recovery for wastewater treatment.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 2","pages":"275–283 275–283"},"PeriodicalIF":0.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acssusresmgt.4c00368","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Primary Sludges Drive the Scalability and Power Production of Hydrothermal Liquefaction for Energy Resource Recovery at Wastewater Treatment Facilities.","authors":"Carl Abadam, Alejandro Espino, Katelin Fisher, Derek Belka, Rui Liu, Anjali Mulchandani","doi":"10.1021/acssusresmgt.4c00368","DOIUrl":"10.1021/acssusresmgt.4c00368","url":null,"abstract":"<p><p>This research assesses the impact of wastewater sludges from different treatment stages and facility scales on the biocrude power potential from hydrothermal liquefaction (HTL). HTL offers a promising method for energy resource recovery through biocrude production, yet its viability for smaller facilities [<1 million gallons per day (MGD)] remains uncertain. Sludges from facilities of varying scales (0.8, 13, and 76 MGD) were analyzed. We found that the treatment stage influences the energy content and chemical composition more than the facility scale. HTL experiments showed that primary sludges (PS) yield more biocrude than waste-activated sludges (WAS); however, the carbon fractionation remained similar across facility scales. The power generated by PS converted to biocrude was 1.05-1.55 times higher than that if it were converted to methane. Meanwhile, WAS resulted in lower power generation from biocrude than methane. At small plants where primary treatment is not incorporated, HTL is not an ideal energy recovery technology, and instead other waste-management solutions might be better explored. This study emphasizes applying HTL only at plants where it can be truly viable for matching or exceeding the power consumption by evaluating HTL in the context of practical wastewater treatment parameters, e.g., treatment flow, sludge density, energy density, and the realistic conversion potential for energy resource recovery technologies.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 2","pages":"275-283"},"PeriodicalIF":0.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11874014/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143560359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of Compostable and Recyclable Modified Soybean Oil-Coated Paper with Enhanced Water and Oil Resistance","authors":"Vikash Kumar,&nbsp;Mohamad Shaker,&nbsp;Ajmir Khan,&nbsp;Shrirang Sabde,&nbsp;Syeda Shamila Hamdani,&nbsp;Manal O. Alghaysh,&nbsp;Yun Wang,&nbsp;Kecheng Li,&nbsp;Mohamed A. Abdelwahab,&nbsp;Sean Barton,&nbsp;Julia Haidler and Muhammad Rabnawaz*,&nbsp;","doi":"10.1021/acssusresmgt.4c0035610.1021/acssusresmgt.4c00356","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00356https://doi.org/10.1021/acssusresmgt.4c00356","url":null,"abstract":"<p >Plastic (especially polyethylene), per- and polyfluoroalkyl substances (PFAS), and modified plant oils, such as acrylated epoxidized soybean oil (AESO), are commonly used for paper coatings due to their excellent packaging performance. However, plastic- and plant-oil-coated paper is not recyclable and PFAS is toxic. To address these issues, a photocurable AESO emulsion was blended with a degradable cross-linker, oligoacrylate lactide/glycolide, to enhance the recyclability of the coated paper. In a parallel approach, epoxidized soybean oil (ESO) was modified with glycolic and methacrylic groups to further promote the recyclability of the coated paper. In both cases, emulsions were prepared, cast onto paper, and UV-cured prior to testing for water and oil resistance using a Cobb-1800 and kit rating tests, respectively. The coated paper was both repulpable and recyclable, as validated through standard recycling methods. Furthermore, vermicomposting tests confirmed the compostability of the coated paper. This work demonstrates a unique, naturally derived packaging alternative for PFAS and plastics in packaging applications.</p><p >Sustainable paper packaging with modified soybean oil provides superior water and oil resistance, recyclability, and vermicompostability, promoting a circular economy and advancing eco-friendly packaging solutions for a greener future.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 1","pages":"98–107 98–107"},"PeriodicalIF":0.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acssusresmgt.4c00356","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143087665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable Photocatalytic Valorization of Pork Lard to Fatty Acids and Glycerol through Energy-Efficient Hybrid Irradiations: LCIA and Cost Analysis","authors":"Rajib Paul,&nbsp;Ritika Samanta and Rajat Chakraborty*,&nbsp;","doi":"10.1021/acssusresmgt.4c0038710.1021/acssusresmgt.4c00387","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00387https://doi.org/10.1021/acssusresmgt.4c00387","url":null,"abstract":"<p >The upsurge in global pork meat consumption leading to surplus generation of byproducts, namely, inedible pork lard (IPL), necessitates a sustainable valorization technique for synthesis of industrially valuable fatty acids (FA) and glycerol (GL). An energy-efficient hybrid \"UV and quartz iodine (QI) -irradiated batch reactor\" (UVQIIBR) were deployed in the presence of heterogeneous acid-photocatalysts, specifically, Amberlyst 15 and nano-TiO₂, for photocatalytic hydrolysis of IPL. The optimal process rendered 98.2% IPL conversion (α_<i>IPL</i>) at 180 min, 70 °C, 1:80 IPL:water mol/mol, and 10 wt % catalyst concentration. A comparative study among electromagnetically irradiated reactors revealed an augmented 98.2% IPL conversion in UVQIIBR compared to 90.2% in the UV and silicon carbide (SC) (far-infrared)-irradiated batch reactor, 85% in the UV-irradiated batch reactor, 78.02% in the QI-irradiated batch reactor, 70.46% in the SC-irradiated batch reactor, and a remarkably lower conversion (55%) in the conventionally heated (CH) batch reactor (CHBR). A significant 62.28% energy savings could be achieved in UVQIIBR as compared to CHBR. The optimal product was composed of FA (77.91%) and GL (22.09%). Furthermore, the LCIA ascertained superior sustainability of IPL-conversion in UVQIIBR over CHBR in terms of a profound 69.007% reduction in GWP and the cost of FA (29.68%) and GL (40%).</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 1","pages":"127–134 127–134"},"PeriodicalIF":0.0,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143087734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smart Integration of Cobalt-Based Metal Organic Framework with Textile Waste for a Sustainable and Flexible High-Performance Supercapacitor","authors":"Ekta Vashishth,&nbsp;Avinash Raulo,&nbsp;Rajiv K. Srivastava and Bhanu Nandan*,&nbsp;","doi":"10.1021/acssusresmgt.4c0033110.1021/acssusresmgt.4c00331","DOIUrl":"https://doi.org/10.1021/acssusresmgt.4c00331https://doi.org/10.1021/acssusresmgt.4c00331","url":null,"abstract":"<p >With the advancement of electronic devices and wearable electronics, the concern for green energy solutions is rising. Energy generation from waste would be exciting among various sustainable resources since it can reduce costs and simultaneously eliminate waste generation. Here, we report a straightforward method for turning waste cotton textiles into a flexible free-standing supercapacitor. The waste cotton cloth-derived CoCo₂O₄@NCC-30 (cobalt oxide@nitrogen-doped carbon cloth) electrode possesses a large specific surface area (∼415.5 m² g^–1) and good flexibility. CoCo₂O₄ integration and N-doping provide abundant active sites to augment the electrode storage capacity. In a three-electrode system with an aqueous 2 M KOH electrolyte, the resulting CoCo₂O₄@NCC-30 electrode exhibits an exceptional specific capacitance of 924.7 F g^–1 at a current density of 1 A g^–1. It displays excellent cycling stability over 10,000 cycles. The symmetric supercapacitor with CoCo₂O₄@NCC-30 electrodes and a cotton cloth separator achieves a specific capacitance of 362.64 F g^–1 at 0.8 A g^–1. A flexible symmetric full-cell supercapacitor with a PVA-KOH gel electrolyte shows an energy density of 16.3 Wh kg^–1 at 0.6 A g^–1. Moreover, the CoCo₂O₄@NCC-30-based full-cell supercapacitor maintains a stable performance under bending, showcasing its flexibility and mechanical integrity. This work highlights the design of a green supercapacitor for high-performance flexible and wearable energy storage.</p>","PeriodicalId":100015,"journal":{"name":"ACS Sustainable Resource Management","volume":"2 1","pages":"108–118 108–118"},"PeriodicalIF":0.0,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143087603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}