OOIR: Observatory of International Research

Papers

(The H4-Index of Green Chemistry is 91. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-01-01 to 2026-01-01.)

Article	Citations
Solvent-free Markovnikov hydroamination of vinylarenes with carboxamides: a heterogeneous catalytic approach using Hβ zeolite	994
Inside front cover	448
Inside back cover	327
Inside front cover	287
Contents list	260
Back cover	247
Contents list	242
Front cover	203
Electrochemical C–O bond cleavage of diaryl ethers: upcycling of lignin 4-O-5 models and polyphenylene oxide	203
Oxygen-harvesting carbon dot photocatalysts for ambient tandem oxidative synthesis of quinazolin-4(3H)-ones	200
Inside front cover	199
Inside back cover	195
Contents list	192
Biobased sunscreen fabrication using Zn-porphyrins from engineered Corynebacterium glutamicum	187
Phase-segregated PtNi₅ rhombic dodecahedra enable excellent electrocatalytic hydrogen evolution in the full pH range	179
Metal-free photocatalysis at charged aqueous interfaces: boosting the photocatalytic oxidative coupling of arylamines to azoaromatics under ambient conditions	175
Contents list	169
1,2,3-Trimethoxypropane: a bio-sourced glyme as electrolyte for lithium–O₂ batteries	166
Introduction to green and sustainable batteries	162
Back cover	161
Multi-layered CuO/SiO₂ core–shell structure improves electrocatalytic CO₂-to-n-propanol conversion	160
Phosphatidylcholine-driven cell-like assembly of lignin for reinforcing and toughening rubber materials	160
Biodegradable alginate derivatives obtained by eco-friendly ultrasound technology for more sustainable leather tanning	157
Amino and hydroxyl functionalization of nucleosides via resonant acoustic mixing	157
Cyrene™ blends: a greener solvent system for organic syntheses	154

Modular access to multi-substituted allenones via environmentally friendly organocatalytic C–H allenylation of aldehydes	152
Voltage losses in indoor light harvesting organic photovoltaic devices: a case study of green solvent processed PM6/IT-4Cl devices	148
Design and synthesis of covalently tethered “isoG-star” as a recyclable host for selective cesium separation	145
CO ₂ hydrogenation to CH ₃ OH promoted by strong Cu	144
Tuning the electronic structure of the Mn–N–C catalyst through XO₂ group (X = S, Se, Te) doping for proton-exchange membrane fuel cells	141
A green chemical protocol for the separation of spent LiFePO ₄ cathode material from Al foil and regeneration	140
Hydrophobic and mechanically reinforcing coatings from palmitoylated lignin via waterborne spraying	131
Efficient CO₂ electroreduction to n-propanol on a matching cobalt phthalocyanine/copper tandem catalyst	131
Additive-free N-methylation reaction synergistically catalyzed by Pt single atoms and clusters on α-MoC using methanol as a sustainable C1 source	130
Polymer monomers fabricated from biomass platform molecules over metal-free catalysts	130
Ligand-induced tetrad effect in coordination leaching of ion-adsorption rare earth ores: enhanced recovery of high-value low-lanthanum rare earth concentrates	123
Hierarchical porous organometallic polymers enable industrial-level acidic CO₂ electroreduction	123
Cobalt-catalysed CH-alkylation of indoles with alcohols by borrowing hydrogen methodology	120
Visible-light-induced iron-catalyzed synthesis of N-aryl amides from nitroarenes and chloroalkanes	119
Organic redox polymers as electrochemical energy materials	116
Redox-mediated electrified synthesis of benzaldehyde	116
Plastic photoreforming: catalytic production of hydrogen and valuable chemicals	115
Sustainable base-mediated chemical upcycling of poly (propylene carbonate) to β-hydroxy sulfides and oxides	114
Two-step chemolytic delamination and depolymerization of multilayer laminated packaging films into valuable chemicals	113
Materials from waste plastics for CO₂capture and utilisation	112
Photoredox catalytic aminomethylation of sulfonylthiazoles	111
Rational catalyst design for acetaldehyde upgrading – an in-depth study on the use of a solid base and the development of a second generation supported N-heterocyclic carbene catalyst	111
Catalyst-free defluorinative alkylation of trifluoromethyls	110
Facile synthesis of Pd–Au/BNNS bimetallic catalysts for direct generation of H₂O₂ from H₂ and O₂ under environmentally friendly conditions	109
Halometallate ionic liquids: thermal properties, decomposition pathways, and life cycle considerations	108
Atomically dispersed Co²⁺ on MgAlO_x boosting C_4–10 alcohols selectivity of ethanol valorization	108
Blowing tough polylactide film enabled by the in situ construction of covalent adaptive networks with epoxidized soybean oil as dynamic crosslinks	108
Highly efficient sulfurized Re–Ir catalysts for multiple N-methylation of ethylenediamine and its homologous series with CO₂ and H₂ in water solvent	108
An in situ phosphorization constructed VP₂@VS₂ nanoflower heterostructure with a modulated d-band center of V for efficient polysulfide adsorption and conversion in lithiu	107
Oxygen evolution reaction electrocatalysts for green hydrogen production in seawater: enhancement mechanism in catalytic activity and durability	107
Electrochemical ring-opening 1,3-dihydroxylation of arylcyclopropanes with H₂O	107
Contents list	107
Regulating the hydrophobic microenvironment of SnS₂ to facilitate the interfacial CO₂/H₂O ratio towards pH-universal electrocatalytic CO₂ reduction	106
Photo/electrocatalytic site-selective C–H functionalization of 8-aminoquinolines and their analogues	105
Insights into photoelectrocatalytic lignin oxidation to value-added products using a niobium-doped titanium dioxide photoanode	105
Photoelectrocatalytic heteroarene C(sp²)–H borylation	104
Oxidized thiourea derivatives: uncovering new frontiers with resonant acoustic mixing (RAM)	104
Organic carbonates as green media: from laboratory syntheses to industrial applications	104
NHC–palladium-catalyzed ionic liquid-accelerated regioselective oxyarylation of alkynes with diaryl ethers	103
Energy and cost-saving potential of combined carbon capture and conversion: a pioneering design of a process intensification concept harnessing CeO₂ as a dual-functional material	102
Wood-inspired dual-scale directional channel cellulose bioreactors with high mass transfer efficiency for continuous flow catalytic green conversion	102
Aliphatic C–H arylation with heteroarenes without photocatalysts	100
Applying green chemistry to raw material selection and product formulation at The Estée Lauder Companies	99
Strikingly high amount of tricin-lignin observed from vanilla (Vanilla planifolia) aerial roots	99
Electrosynthesis of benzyl-tert-butylamine via nickel-catalyzed oxidation of benzyl alcohol	99
From green innovations in oligopeptide to oligonucleotide sustainable synthesis: differences and synergies in TIDES chemistry	97
Does enzymatic catalysis lead to more sustainable chemicals production? A life cycle sustainability assessment of isopropyl palmitate	96
Photocatalyst-free H₂O-regulated and regiodivergent multicomponent hydrogenation/bifunctional sulfonylation of alkynes	96
Sustainable protocols for direct C–H bond arylation of (hetero)arenes	96
Novel arylindane diols as sustainable primary antioxidants from lignin	96

Effect of pre-treatment of herbaceous feedstocks on behavior of inorganic constituents under chemical looping gasification (CLG) conditions	96
Polysaccharide-based supramolecular bicomponent eutectogels as sustainable antioxidant materials	95
Recent advances in ex ante techno-environmental-economic assessment of thermochemical waste or biomass to energy technologies based on process simulation	95
An innovative, low-cost and environment-friendly approach by using a deep eutectic solvent as the water substitute to minimize waste in the textile industry and for better clothing performance	95
Multi-step oxidative carboxylation of olefins with carbon dioxide by combining electrochemical and 3D-printed flow reactors	94
Net-zero transition of the global chemical industry with CO₂-feedstock by 2050: feasible yet challenging	94
‘In-water’, nickel-catalyzed mild preparation of allylic amines employing alcohols: application to ‘all-water’ synthesis of pharmaceuticals	94
Replacing polyacrylonitrile with Kraft lignin for sustainable carbon fiber manufacturing mitigates carbon emissions	94
Copper-supported catalysts for sustainable PET depolymerization: a cost-effective approach towards dimethyl terephthalate (DMT) production	94
Molecular understanding of the morphology and properties of lignin nanoparticles: unravelling the potential for tailored applications	93
Toward the next generation of sustainable aluminum-ion batteries: a review	92
An ultra-fast and eco-friendly recycling process for spent LIBs using deep eutectic solvents: mechanism and life-cycle insight	92
Mechanistic study of novel chemical looping phase separation recovering lithium-ion battery cathode materials with biogas residues	92
Tailoring surface reaction pathways by self-assembling a trifluoromethyl-terminated molecular layer to enhance photocatalytic cellulose-to-syngas conversion in pure water	91
Minute-level alkylation of heteroarenes via a photo-Fenton mechanism in continuous flow	91
Catalyst-free mechanochemistry as a versatile tool in synthetic chemistry: a review	91