{"title":"Development of sustainable green ink using agricultural biomass-derived green carbon: functional and environmental perspectives","authors":"Rupam Bandyopadhyay , Rajarshi Bhar , Prakash Ajay Taksal , Jayanta Bhattacharya , Brajesh Kumar Dubey , Chandra Sekhar Tiwary","doi":"10.1039/d6gc00729e","DOIUrl":"10.1039/d6gc00729e","url":null,"abstract":"<div><div>The development of sustainable green ink (GI) using biomass-derived green carbon (GC) as a pigment offers a sustainable alternative to traditional carbon black (CB) based formulations. The developed GI exhibited better waterproofing than commercial ink, as measured by ImageJ profile analysis, and demonstrated significant antibacterial efficacy with a 15.7 mm zone of inhibition. A life cycle assessment (LCA) was conducted to examine the environmental performance of GI manufacturing and to compare GC with conventional CB at the pigment level, while accounting for the proprietary characteristics of commercial ink compositions. The findings demonstrate that GC production has lower climatic and fossil resource impacts than CB, attributed to the use of agricultural residue as a renewable feedstock and to internal energy recovery during pyrolysis. Contribution analysis indicates that electricity consumption is the primary environmental hotspot for both GC synthesis and GI formulation, significantly affecting toxicity and eutrophication effect categories. Sensitivity analysis confirms that fluctuations in electricity demand led to approximately linear changes in various midpoint impacts, while the relative hierarchy of impact categories remains consistent. This study demonstrates that replacing fossil-derived CB with biomass-derived GC can mitigate climate and resource burdens without causing additional formulation-level effects, while highlighting the need for energy-efficient processing and cleaner electricity sources to fully harness the sustainability potential of GI technologies.</div></div>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":"28 25","pages":"Pages 10447-10458"},"PeriodicalIF":10.6,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148336675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Green ChemistryPub Date : 2026-06-29Epub Date: 2026-06-08DOI: 10.1039/d6gc00733c
Hande Günan , Mariia Vorobii , Ulrich Schwaneberg
{"title":"pH- and cellulase-triggered debonding of a bio-based adhesive designed to facilitate pharmaceutical blister pack recycling","authors":"Hande Günan , Mariia Vorobii , Ulrich Schwaneberg","doi":"10.1039/d6gc00733c","DOIUrl":"10.1039/d6gc00733c","url":null,"abstract":"<div><div>Recycling pharmaceutical blister packaging waste remains a major challenge due to its complex multilayer structure. Here, a biodegradable adhesive design is proposed to address this issue, aiming to facilitate the separation of composite layers and promote sustainable recycling. A blend of cellulose nanocrystals (CNC) and chitosan (CH) at equal masses showed the highest bond strength after drying, confirming its efficiency as a glue matrix. The CBM3 domain (carbohydrate-binding module family 3) was genetically fused to the adhesion-promoting peptide Snakin-1 (also referred to as an anchor peptide), which exhibited binding affinity toward synthetic polymers used in blister packaging (polyvinyl chloride (PVC) and PVC-based commercial products), as well as toward aluminum layers. In fusion protein CBM3-Snakin1, a flexible Gly/Ala-rich linker provided spatial separation between the two domains, enabling their bifunctional binding behavior. Upon application between the target aluminum and plastic surfaces, the CNC/CH polysaccharide matrix containing the fusion protein showed approximately twofold higher binding strength compared to the protein-free matrix, reaching 98.5 kPa. Chemical characterization revealed new hydrogen bonding interactions between CNC, CH and CBM3-Snakin-1. Thermal analyses indicated that CNC increased the thermal stability of the CH matrix, while the incorporation of the CBM3-Snakin-1 fusion protein limited chain mobility without adversely affecting thermal stability. Controlled, rapid and material-specific debonding was observed under both pH variations and cellulase treatments. The developed fully bio-based adhesive, composed of a CNC/CH polysaccharide matrix incorporating a CBM3-Snakin-1 fusion protein, achieved a sufficient binding strength and demonstrated on-demand delamination, providing a new perspective for pharmaceutical blister pack recycling.</div></div>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":"28 25","pages":"Pages 10523-10536"},"PeriodicalIF":10.6,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148336693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Green ChemistryPub Date : 2026-06-24eCollection Date: 2026-08-17DOI: 10.1039/d6gc02129h
Ruslan Gryaznov, Fengyang Wang, Mahmoud Mazarji, Alberto J Huertas-Alonso, Ievgen Pylypchuk, Mika H Sipponen
{"title":"Fully bio-based wood adhesives from lignin and zein protein.","authors":"Ruslan Gryaznov, Fengyang Wang, Mahmoud Mazarji, Alberto J Huertas-Alonso, Ievgen Pylypchuk, Mika H Sipponen","doi":"10.1039/d6gc02129h","DOIUrl":"10.1039/d6gc02129h","url":null,"abstract":"<p><p>Manufacturing of wood-based panels predominantly relies on formaldehyde-containing adhesives, whose volatile organic compound emissions raise serious concerns about indoor air quality and human health. Although bio-based adhesives derived from proteins, polysaccharides, or lignin have been explored, achieving strong bonding performance while maintaining green, scalable, and practical processability remains challenging. In this study, we present a waterborne wood adhesive in which zein protein is dispersed within a viscous micellar lignin gel. Drawing inspiration from the interactions between proteins and polyphenols, we designed this system to be fully bio-based and free of cross-linkers. When birch veneers were hot-pressed with this adhesive, the resulting three- to five-layer plywood materials showed competitive performance compared with existing bio-based adhesive formulations. Meanwhile, this approach also delivers favorable green metrics, including an Eco-scale score of 94, supported by the absence of organic solvents, a minimal number of steps, and the waterborne nature of the formulation. Notably, the adhesive can be debonded in a 70% ethanol-water solution, allowing its recovery and reuse. The combined results indicate the potential of the lignin-protein system as a sustainable alternative to conventional petroleum-based commercial adhesives for indoor use.</p>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":" ","pages":"13265-13278"},"PeriodicalIF":10.6,"publicationDate":"2026-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13343468/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148409818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Green ChemistryPub Date : 2026-06-22Epub Date: 2026-05-19DOI: 10.1039/d5gc06274h
Xianghui Wang , Yun Luo , Xuehan Zheng , Zhicheng Wang , Shengpin Wu , Chenghang You , Guifa Long , Jiali Mu , Zhenxing Liang
{"title":"Low-temperature ambient-air synthesis of an efficient and stable axially N-coordinated Fe single-atom catalyst for oxygen reduction","authors":"Xianghui Wang , Yun Luo , Xuehan Zheng , Zhicheng Wang , Shengpin Wu , Chenghang You , Guifa Long , Jiali Mu , Zhenxing Liang","doi":"10.1039/d5gc06274h","DOIUrl":"10.1039/d5gc06274h","url":null,"abstract":"<div><div>Tuning the adsorption of oxygen reduction reaction (ORR) intermediates while suppressing Fe demetallation is essential yet challenging to promote the activity and robustness of single-Fe-atom catalysts. Axial ligation offers a promising electronic/geometric lever, but mild, scalable protocols that precisely construct FeN<sub>5</sub> sites have rarely been realized. Here we report an ambient-air, 180 °C one-step thermal condensation (3 h) that directly generates covalently cross-linked FeN<sub>5</sub> motifs without inert gas or high-temperature pyrolysis. The catalyst exhibits an onset potential and half-wave potential of 1.02 and 0.92 V in alkaline media, together with >98% 4e<sup>−</sup> selectivity, pronounced methanol tolerance and robustness. DFT calculations attribute the enhancement to the axial N ligand that upshifts Fe valence and lowers the O<sub>2</sub> → OOH* barrier while pyromellitic dianhydride mediated cross-linking anchors the metal centre. A Zn–air battery employing this cathode delivers 209 mW cm<sup>−2</sup> peak power and 810 mAh g<sub>Zn</sub><sup>−1</sup> capacity, demonstrating practical viability. This mild, energy-minimized strategy resolves the long-standing synthesis–stability dilemma and provides a general route to high-performance ORR single-atom catalysts.</div></div>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":"28 24","pages":"Pages 10141-10149"},"PeriodicalIF":10.6,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Green ChemistryPub Date : 2026-06-22Epub Date: 2026-06-05DOI: 10.1039/d6gc01261b
Piotr Latos , Anna Wolny , Paulina Powroźnik , Sebastian Jurczyk , Maciej Krzywiecki , Anna Chrobok
{"title":"Application-driven design of a biocatalyst for the continuous synthesis of levulinate esters from α-angelica lactone: synergistic effects of silica, triflate ionic liquid and lipase","authors":"Piotr Latos , Anna Wolny , Paulina Powroźnik , Sebastian Jurczyk , Maciej Krzywiecki , Anna Chrobok","doi":"10.1039/d6gc01261b","DOIUrl":"10.1039/d6gc01261b","url":null,"abstract":"<div><div>This study presents the design of a biocatalyst for the continuous synthesis of sustainable bioproducts with lignocellulosic biomass. The enzyme support was carefully designed through the immobilization of the methyltrioctylammonium triflate ionic liquid on the silica surface (3.43 wt% ionic liquid loading), ensuring that the cation responsible for providing the hydrophobicity is oriented outward. The modified silica with IL was characterized using TGA, FTIR, SEM-EDS, BET, and <sup>19</sup>F solid state NMR. Computational simulations revealed interaction forces between the triflate anion and the silica and the key role of strong hydrogen bonding and hydrophobic microenvironments in enhancing stability. Sulfur K-edge XANES confirmed that the triflate anion remains in an intact S(<span>vi</span>) environment after immobilization, while spectral changes indicate a more electron-poor, strongly surface-bound triflate anion consistent with hydrogen-bond anchoring on silica. The formation of robust hydrogen bonds between the fluorine atoms and the silica hydroxyl groups led to the development of a highly stable support material, which was subsequently used as a matrix for the immobilization of <em>Candida antarctica</em> lipase B (6.06 wt% loading). The synergistic effect of silica, triflate ionic liquid and lipase was demonstrated in the biotransformation of α-angelica lactone with <em>n</em>-butanol, achieving a 98% yield under optimised batch conditions (room temperature, 120 min). In a continuous-flow system, the biocatalyst exhibited sustained performance, maintaining a yield of <em>n</em>-butyl levulinate above 95% for up to 144 h of operation without detectable enzyme leaching. The integration of enhanced catalytic activity and long-term stability in continuous-flow systems offers a pathway for the development of sustainable and economically viable enzymatic processes.</div></div>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":"28 24","pages":"Pages 10187-10200"},"PeriodicalIF":10.6,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Green ChemistryPub Date : 2026-06-22Epub Date: 2026-06-04DOI: 10.1039/d6gc02101h
Ke Wu , Guojie Ye , Zhengwei Zhou , Zuofeng Chen , Zhendong Lei , Deli Wu
{"title":"Precursor-regulated reconstruction of Cu-based catalysts for efficient electrocatalytic urea synthesis from CO2 and nitrate","authors":"Ke Wu , Guojie Ye , Zhengwei Zhou , Zuofeng Chen , Zhendong Lei , Deli Wu","doi":"10.1039/d6gc02101h","DOIUrl":"10.1039/d6gc02101h","url":null,"abstract":"<div><div>Electrocatalytic urea synthesis from CO<sub>2</sub> and nitrate provides a sustainable route for coupling carbon utilization with nitrogen-waste upgrading under mild conditions. However, achieving scalable urea yields remains challenging due to the difficulty of synchronizing carbon- and nitrogen-containing intermediates on catalyst surfaces, particularly under practical conditions. Although Cu-based catalysts have been widely studied for C–N coupling, how precursor chemistry regulates their working-state reconstruction during electrolysis is still not well understood. Here, we systematically prepared two Cu-based catalysts enriched with basic surface groups (CO<sub>3</sub><sup>2−</sup>/OH<sup>−</sup>), Cu<sub>2</sub>(OH)<sub>2</sub>CO<sub>3</sub> and Cu(OH)<sub>2</sub>, and investigated their nanoscale reconstruction pathways during electrocatalytic C–N coupling for urea synthesis. Hierarchically structured Cu<sub>2</sub>(OH)<sub>2</sub>CO<sub>3</sub> delivered a urea yield of 63.20 mmol h<sup>−1</sup> g<sub>cat.</sub><sup>−1</sup> with a faradaic efficiency of 16.21% at −0.9 V <em>versus</em> RHE, nearly twice that of Cu(OH)<sub>2</sub>. Quasi-<em>in situ</em> X-ray photoelectron spectroscopy and X-ray absorption spectroscopy revealed that Cu<sub>2</sub>(OH)<sub>2</sub>CO<sub>3</sub> follows a carbonate-regulated reconstruction distinct from that of Cu(OH)<sub>2</sub> and maintains a broader mixed-valence working-state window composed of Cu<sup>2+</sup>, Cu<sup>+</sup>, and Cu<sup>0</sup> during catalysis. <em>In situ</em> FTIR spectroscopy and density functional theory calculations further support a pathway in which CO<sub>2</sub> is reduced to *CO on Cu<sup>+</sup> sites, nitrate is reduced to *NH<sub>2</sub> on Cu<sup>0</sup> sites, and their interfacial coupling leads to urea formation. Furthermore, we validated the feasibility of Cu<sub>2</sub>(OH)<sub>2</sub>CO<sub>3</sub> for electrocatalytic C–N coupling in an environmental scenario of food waste biological treatment. This work elucidates precursor-regulated reconstruction as an effective design principle for promoting selective C–N coupling and advancing more sustainable urea electrosynthesis in complex waste-derived environments.</div></div>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":"28 24","pages":"Pages 10128-10140"},"PeriodicalIF":10.6,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Green ChemistryPub Date : 2026-06-22Epub Date: 2026-05-27DOI: 10.1039/d6gc01403h
Zhangshun Luo , Enqin Yang , Yijie Xiao , Anna Su Wu , Yi He , Shenyou Nie
{"title":"Access to indole-3-urea/carbamate derivatives via rhodium-catalysed Lossen rearrangement: a uniform and safe protocol","authors":"Zhangshun Luo , Enqin Yang , Yijie Xiao , Anna Su Wu , Yi He , Shenyou Nie","doi":"10.1039/d6gc01403h","DOIUrl":"10.1039/d6gc01403h","url":null,"abstract":"<div><div>In recent years, indole-3-urea/carbamate derivatives have emerged as privileged scaffolds in drug discovery campaigns. Their synthesis commonly involves the use of indolyl isocyanates, typically generated <em>via</em> DPPA-mediated Curtius rearrangement of indole-3-carboxylic acids. Although versatile and widely employed, DPPA relies on toxic and explosive sodium azide during preparation and poses intrinsic hazards, making it a non-eco-friendly option that violates green chemistry principles. Herein, we report a rhodium-catalysed Lossen rearrangement under mild reaction conditions, enabling facile access to indole-3-urea/carbamate derivatives in an azide-free manner. The broad functional group compatibility (74 examples), scalability, and late-stage functionalization of bioactive compounds illustrate a robust and safe method to construct indole-3-urea/carbamate compound libraries.</div></div>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":"28 24","pages":"Pages 10150-10156"},"PeriodicalIF":10.6,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Green ChemistryPub Date : 2026-06-22Epub Date: 2026-06-08DOI: 10.1039/d5gc07085f
Dekang Kong , Xuan Guo , Pei Hu , Yudi Zhao , Junhao Wang , Huili Zhang , Yunming Fang
{"title":"An integrated hydrodeoxygenation–hydroisomerization strategy for biofuel production from cashew nut shell liquid","authors":"Dekang Kong , Xuan Guo , Pei Hu , Yudi Zhao , Junhao Wang , Huili Zhang , Yunming Fang","doi":"10.1039/d5gc07085f","DOIUrl":"10.1039/d5gc07085f","url":null,"abstract":"<div><div>The high production cost stemming from expensive feedstocks poses a major challenge for industrial biofuels. To address this issue, we report an efficient one-pot process for the co-production of renewable diesel and sustainable aviation fuel (SAF) from low-cost cashew nut shell liquid (CNSL) by integrating hydrodeoxygenation (HDO) with hydroisomerization in a single reactor. The HDO of cardanol, the major phenolic component of CNSL, was first investigated. The results highlighted that the optimal catalyst performance requires a precise tuning among metal sites, pore structure and acidity. Subsequently, to enhance the cold flow properties of the HDO intermediates, a series of bifunctional catalysts were engineered by precisely regulating the spatial distribution of Pt nanoparticles on ZSM-22/Al<sub>2</sub>O<sub>3</sub> composite supports. Our study demonstrate that maintaining nanoscale proximity between metal and acid sites is crucial for maximizing the selectivity toward branched isomers. Guided by these insights, reaction conditions were optimized, leading to a stable and efficient integrated process. This work provides a fundamental understanding of catalyst design for upgrading phenolic lipids and offers a practical technological route for valorizing CNSL into advanced biofuels.</div></div>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":"28 24","pages":"Pages 10260-10275"},"PeriodicalIF":10.6,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Naphthols improve lignin separation and induce photoluminescent structural changes during glycolic acid/pentanol biphasic pretreatment of poplar","authors":"Hong Liao , Wenjun Ying , Junjun Zhu , Huayou Chen , Junhua Zhang","doi":"10.1039/d6gc02097f","DOIUrl":"10.1039/d6gc02097f","url":null,"abstract":"<div><div>Aromatic naphthol additives offer a scalable way to regulate biphasic pretreatment through phase-selective partitioning, enabling simultaneous lignin valorization into photofunctional lignin and efficient hemicellulose conversion within a single processing step. In a glycolic acid/pentanol system for poplar, partitioning analysis showed that 2-naphthol and 3-hydroxy-2-naphthoic acid were enriched in the pentanol phase. At 20 mM, both additives only mildly influenced aqueous-phase xylan hydrolysis, and xylan to xylooligosaccharides (XOS) selectivity was retained, with XOS yields remaining at 46.2–47.5%. This phase-selective partitioning directed lignin reactions toward arylation-type stabilization pathways, while delignification increased from 75.3% to 88.5–90.3%, surface lignin coverage on the solids decreased by 24%, and glucose yields after enzymatic hydrolysis rose from 79.1% to 90.3–92.6%. NMR spectroscopy showed near-complete loss of β-O-4 linkages (from 56.3% to 1.4–2.4%), attenuation of condensed phenolic structures, and clear naphthalene resonances indicative of naphthol incorporation. The resulting lignin fractions exhibited solvent-tunable autofluorescence, with a quantum yield of up to 14% in tetrahydrofuran, attributable to π-conjugation extension and rigidification that suppress nonradiative decay. This photofunctional lignin holds significant potential for applications in biobased fluorescent coatings. This approach establishes a novel route for the co-production of high-value photofunctional lignin and sugars from lignocellulose, transforming a traditional biorefinery waste stream into a structurally engineered optical material.</div></div>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":"28 24","pages":"Pages 10276-10294"},"PeriodicalIF":10.6,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Green ChemistryPub Date : 2026-06-22Epub Date: 2026-05-20DOI: 10.1039/d6gc00716c
Yuguo Dong , Puyan Bai , Hongyu Yang , Changle Zhao , Lin Dong , Xiaoli Gu , Zupeng Chen
{"title":"One-pot oxidation–acetalization strategy for photocatalytic cleavage of C–C bonds in lignin model compounds over phosphorus-doped carbon nitride","authors":"Yuguo Dong , Puyan Bai , Hongyu Yang , Changle Zhao , Lin Dong , Xiaoli Gu , Zupeng Chen","doi":"10.1039/d6gc00716c","DOIUrl":"10.1039/d6gc00716c","url":null,"abstract":"<div><div>Photocatalytic depolymerization of lignin into aromatic compounds is of great significance but extremely challenging, hindered by the stable interunit C–C bonds with high dissociation energies. Herein, we developed a phosphorus-doped carbon nitride (P<sub><em>x</em></sub>-CN) photocatalyst for the selective cleavage of C<sub>α</sub>–C<sub>β</sub> bonds in lignin model compounds under visible light at room temperature. This approach achieves a nearly complete conversion (>99.9%) of 2-phenoxy-1-phenylethanol, along with high yields of benzaldehyde dimethyl acetal (91.1%) and benzyl formate (56.3%). Mechanistic investigations reveal that the activation of the C<sub>β</sub>–H bond is crucial for the transformation to occur. Meanwhile, the introduction of phosphorus accelerates the separation efficiency of charge carriers, thereby enhancing the photocatalytic performance of the P<sub><em>x</em></sub>-CN. This work demonstrates the potential of phosphorus-doped carbon nitride for the high-selectivity photocatalytic cleavage of the C–C bond in lignin to aromatic chemicals.</div></div>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":"28 24","pages":"Pages 10087-10095"},"PeriodicalIF":10.6,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148285352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}