Chlorophyll derivatives/MXene hybrids for photocatalytic hydrogen evolution: Dependence of performance on the central coordinating metals

Efficient photocatalytic hydrogen production by organic–inorganic heterojunction structure in Chl@Cu2O/Ti3C2Tx

“…For Ti 3 C 2 T x , the typical stretching vibrational peaks at 1650 and 1390 cm −1 are attributed to the CO and O–H groups, respectively. 43 In the FT-IR spectrum of Cu 2 O, the corresponding characteristic peak at 630 cm −1 is due to Cu–O stretching vibrations. 56 Meanwhile, Chl exhibits a series of characteristic vibrational peaks in the range from 2750 to 3000 cm −1 , which can be attributed to the stretching vibrational modes of C–H in the Chl molecule.…”

“…42 A derivative (named as Chl hereafter) of chlorophyll-a, the most essential natural pigment in photosynthetic activity in nature, is constantly and efficiently converting solar energy into chemical energy. [43][44][45] Due to the strong visible-near-infrared light absorption and specific electron transfer capability of its self-aggregates, [46][47][48] Chl has been widely used in solar cells, photocatalysis and energy storage. [49][50][51] The near-infrared absorption of Chl aggregates extends the absorption spectral range of Cu 2 O, which generates a large number of photogenerated electrons to participate in the hydrogen production, and at the same time, the organic-inorganic heterojunction structure constructed by the interleaved energy band structure of Chl and Cu 2 O leads to the efficient photogenerated carrier separation.…”

Mechanistic insights into photoinduced energy and charge transfer dynamics between magnesium-centered tetrapyrroles and carbon nanotubes

“…3 MgC and MgBC are the reaction centres of chlorophyll and bacteriochlorophyll, which play an indispensable role in natural photosynthesis. [4][5][6] These photosynthetic pigments can efficiently harvest and convert energy from sunlight into chemical energy stored in the form of biomass, providing essential energy sources for living organisms on earth. 7,8 These magnesium-centered tetrapyrroles with an extended p electron system possess remarkable absorption capacities in the visible light region, making them ideal candidates as photosensitizers in photodynamic therapy (PDT), photocatalysis, etc.…”

Biohybrid Organic Heterostructure Based on Chlorophyll‐Bacteriochlorophyll Aggregates for Ecofriendly Hydrogen Production

“…[46,47] Bacteriochlorophyll (BChl) and chlorophyll (Chl) molecules are the most abundant naturally occurring photosynthetic pigments. [48][49][50] In natural photosynthetic light-harvesting systems, BChl and Chl pigments act as excellent absorbers of visible light to capture photons and the resulting singlet energy is delocalized and efficiently transferred to reaction centers in the BChl and Chl supercombination. [51][52][53] At the same time, BChl and Chl pigments have a number of advantages including excellent visible light absorption properties, possess the ability to form self-aggregates in a J-type fashion for more efficient sunlight absorption and charge transfer.…”