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@ARTICLE{Roy:634808,
      author       = {Roy, Raj Sekhar and Sil, Supriya and Mishra, Samita and
                      Banoo, Maqsuma and Swarnkar, Abhishek and Kommula, Bramhaiah
                      and De, Arijit K. and Gautam, Ujjal},
      title        = {{L}ayer {W}idth {E}ngineering in {C}arbon {N}itride for
                      {E}nhanced {E}xciton {D}issociation and {S}olar {F}uel
                      {G}eneration},
      journal      = {ACS materials letters},
      volume       = {7},
      number       = {4},
      issn         = {2639-4979},
      address      = {Washington, DC},
      publisher    = {ACS Publications},
      reportid     = {PUBDB-2025-02629},
      pages        = {1385 - 1393},
      year         = {2025},
      note         = {Waiting for fulltext},
      abstract     = {Photocatalytic H2 and H2O2 production using graphitic
                      carbon nitride (g-C3N4) offers promising renewable energy
                      prospects but suffers from rapid exciton recombination,
                      which can be mitigated by K+-insertion-driven enhanced
                      interlayer electron–hole separation. However, limited K+
                      insertion remains a bottleneck due to inadequate
                      ion-insertion channels. Herein, we present an engineered
                      g-C3N4 with expanded layer widths for facile ion diffusion,
                      increasing K+ insertion by $>250\%.$ This leads to
                      significant layer contraction post K+ insertion $(∼3\%,$
                      1.5 times larger than before) due to stronger electrostatic
                      attraction, resulting in weaker exciton binding energy (91
                      meV, $∼57\%$ diminished), near-complete suppression of
                      photoluminescence, and doubling of excited-state electron
                      lifetime as revealed by femtosecond decay kinetics. These
                      improvements led to ∼25 and ∼140 times increments over
                      bare g-C3N4 in H2 and H2O2 production rates, respectively,
                      under visible light. Considering the earth-abundant
                      constituents of g-C3N4, our work establishes a novel design
                      strategy for a highly active, sustainable photocatalyst.},
      cin          = {FS DOOR-User},
      ddc          = {540},
      cid          = {$I:(DE-H253)FS_DOOR-User-20241023$},
      pnm          = {6G3 - PETRA III (DESY) (POF4-6G3) / INDIA-DESY - INDIA-DESY
                      Collaboration $(2020_Join2-INDIA-DESY)$ / FS-Proposal:
                      I-20220874 (I-20220874)},
      pid          = {G:(DE-HGF)POF4-6G3 / $G:(DE-HGF)2020_Join2-INDIA-DESY$ /
                      G:(DE-H253)I-20220874},
      experiment   = {EXP:(DE-H253)P-P65-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1021/acsmaterialslett.5c00178},
      url          = {https://bib-pubdb1.desy.de/record/634808},
}