Single titanium-oxide species implanted in 2D g-C3N4 matrix as a highly efficient visible-light CO2 reduction photocatalyst

Integrating Z-scheme heterojunction of Co1-C3N4@α-Fe2O3 for efficient visible-light-driven photocatalytic CO2 reduction

“…3c shows the mass spectrum of CO obtained with 13 CO 2 as a substrate under identical photocatalytic reaction conditions; a distinct 13 CO peak (m/z = 29) was observed, indicating that the CO indeed originates from CO 2 . H 2 18 O, instead of H 2 16 O, was also adopted to verify the water oxidation half-reaction, and a clear 18 O 2 peak (m/z = 36) was observed in the mass spectrum.…”

“…15 Recently, we have developed an efficient photocatalyst for CO 2 reduction by implanting single titanium oxide species on g-C 3 N 4 . 16 In the presence of the Co(bpy) 3 Cl 2 co-catalyst and TEOA, a CO production rate of 283.9 μmol g −1 h −1 has been achieved under visible light irradiation. These results strongly demonstrate the viability of g-C 3 N 4 -supported single-atomic site catalysts for photocatalytic CO 2 reduction.…”

Rational Design of Carbon‐Based 2D Nanostructures for Enhanced Photocatalytic CO2Reduction: A Dimensionality Perspective

“…Besides metal/g‐C 3 N 4 ‐based photocatalysts, there are other tremendous amounts of works that report on g‐C 3 N 4 /semiconductor photocatalysts for the photoreduction of CO 2 into solar fuels, including g‐C 3 N 4 /In 2 O 3 , C 3 N 4 /CdS, g‐C 3 N 4 /ZnO, g‐C 3 N 4 /TiO 2 , g‐C 3 N 4 /WO 3 , g‐C 3 N 4 /CoO x . Cao and co‐workers fabricated g‐C 3 N 4 /In 2 O 3 composite photocatalysts through solvothermal method, whereby the as‐synthesized g‐C 3 N 4 /In 2 O 3 exhibited boosted photocatalytic performance for CO 2 reduction and H 2 generation .…”

“…However, SACs have yet to be popular in CO 2 reduction largely due to their inability to photoexcite and incapacity to perform as robust active sites for CO 2 reduction. Motivated by the current limited studies of SAC, Tang and co‐workers evaluated a single titanium oxide species TiO implanted on 2D g‐C 3 N 4 for the photoreduction of CO 2 to CO . Interestingly, single titanium oxide differs in a manner that its Ti 4+ –O 2− species can be transformed to Ti 3+ –O − , which has been well documented to exhibit strong reducing activity for several molecules, including CO 2 .…”

Research Progress of Photocatalytic CO2Reduction Based on Two-dimensional Materials

“…CO 2 光还原的研究已历经 40 余载, 自 1979 年 Inoue 等 [22] 首次证明可将 CO 2 转化成甲醛(HCHO)和甲醇 (CH 3 OH)以来, 氧化物、硫化物和氮氧化物等材料便被 广泛地运用于光催化 CO 2 中. 2004 年石墨烯的成功剥离 和表征 [23] , 引发了二维(2D)材料的研究热潮, 以石墨烯 为首的 2D 材料家族成员相继面世 [21] (见图 1), 其中包括 过渡金属二硫( 族 ) 化合物(TMDs) [24][25] 、六方氮化硼 (h-BN) [26][27] 、石墨相氮化碳(g-C 3 N 4 ) [28][29][30] 、金属碳/氮化 物 (MXenes) [31][32] 和 层 状 双 氢 氧 化 合 物 (LDHs) [33][34] [35] .…”