Synergistic photocatalytic of CO2-to-CO conversion by 2D/1D Ti3C2Tx/p-BN heterojunction with interfacial chemical bonding

A review of boron nitride-based photocatalysts for carbon dioxide reduction

“…Indeed, 5 wt% Ti 3 C 2 T x /p-BN has the highest fluorescence lifetime (29.82 ns) compared to p-BN (22.71 ns), showing that the excited charge carriers possess a longer lifetime. 172 For 5 wt% Ti 3 C 2 T x /p-BN, the E F of n-type semiconductors is equal to E fb and therefore the E F of p-BN (−0.89 eV) is lower than that of Ti 3 C 2 T x (−0.53 eV), resulting in the creation of a Schottky heterojunction. 172 The excited electrons in p-BN during the radiation can be transferred to the Ti 3 C 2 T x component, suppressing the recombination of electron–hole pairs in the composites.…”

“…172 For 5 wt% Ti 3 C 2 T x /p-BN, the E F of n-type semiconductors is equal to E fb and therefore the E F of p-BN (−0.89 eV) is lower than that of Ti 3 C 2 T x (−0.53 eV), resulting in the creation of a Schottky heterojunction. 172 The excited electrons in p-BN during the radiation can be transferred to the Ti 3 C 2 T x component, suppressing the recombination of electron–hole pairs in the composites. 172 In fact, Ti 3 C 2 T x acts as a promising electron acceptor, followed by forming Ti–O–B bonds (Fig.…”

“…172 The excited electrons in p-BN during the radiation can be transferred to the Ti 3 C 2 T x component, suppressing the recombination of electron–hole pairs in the composites. 172 In fact, Ti 3 C 2 T x acts as a promising electron acceptor, followed by forming Ti–O–B bonds (Fig. 15c) and a Schottky heterojunction with p-BN.…”

“…15c) and a Schottky heterojunction with p-BN. 172 It leads to the improvement of the charge transfer rate at the interface, thereby preventing charge carrier recombination and promoting the CO production yield to 22.53 μmol g −1 h −1 (ref. 172 ) (Table 4).…”

“…172 It leads to the improvement of the charge transfer rate at the interface, thereby preventing charge carrier recombination and promoting the CO production yield to 22.53 μmol g −1 h −1 (ref. 172 ) (Table 4). Correspondingly, the CO selectivity of this heterojunction is promoted to 86.88% compared to that of 79.84% for p-BN, 172 signifying that a two-electron evolution reaction is a more favourable reduction pathway for this heterojunction.…”