A Low‐Cost Metal‐Free Photocatalyst Based on Black Phosphorus

Wen, Min; Wang, Jiahong; Tong, Ruifeng; Liu, Danni; Huang, Hao; Yu, Ying; Zhou, Zhang‐Kai; Chu, Paul K.; Yu, Xue‐Feng

doi:10.1002/advs.201801321

Cited by 90 publications

(69 citation statements)

References 53 publications

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“…More than atomic scale size, the ultrasmall noble metal nanoparticles (NPs) especially at subnanometer level possess unprecedented properties compared to conventional bulk materials. The exploitation of novel subnanometer materials for heterogeneous catalysis is one of frontier research …”

Section: Introductionmentioning

confidence: 99%

Magnetically Hollow Pt Nanocages with Ultrathin Walls as a Highly Integrated Nanoreactor for Catalytic Transfer Hydrogenation Reaction

Liu

et al. 2019

Advanced Science

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Fabricating efficient and stable nanocatalysts for chemoselective hydrogenation of nitroaromatics is highly desirable because the amines hold tremendous promise for the synthesis of nitrogen containing chemicals. Here, a highly reactive and stable porous carbon nitride encapsulated magnetically hollow platinum nanocage is developed with subnanometer thick walls (Fe 3 O 4 @ sn Pt@PCN) for this transformation. This well‐controlled nanoreactor is prepared via the following procedures: the preparation of core template, the deposition of platinum nanocage with subnanometer thick walls, oxidative etching, and calcination. This highly integrated catalyst demonstrates excellent performance for the catalytic transfer hydrogenation of various nitroaromatics and the reaction can reach >99% conversion and >99% selectivity. With the ultrathin wall structure, the atom utilization of platinum atoms is highly efficient. The X‐ray photoelectron spectroscopy results indicate that partial electrons transfer from the iron oxides to Pt nanowalls, and this increases the electron density of sn Pt nanoparticles, thus promoting the catalytic activity for the transfer hydrogenation of nitroaromatics. For the reduction of 4‐nitrophenol, the reaction rate constant K app is 0.23 min −1 and the turnover frequency (TOF) is up to 3062 h −1 . Additional reaction results illustrate that this magnetic nanoreactor can be reused more than eight times and it is a promising catalytic nanoplatform in heterogeneous catalysis.

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Section: Introductionmentioning

confidence: 99%

Magnetically Hollow Pt Nanocages with Ultrathin Walls as a Highly Integrated Nanoreactor for Catalytic Transfer Hydrogenation Reaction

Liu

et al. 2019

Advanced Science

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“…Photocatalytic water splitting into hydrogen is an important way to convert solar energy into clean chemical fuels. [1] In recent years,m etal-free photocatalysts,s uch as polymeric carbon nitride (PCN), [2] supramolecules, [3] conjugated polymers, [4] a-sulfur, [5] black phosphorus (BP), [6] and red phosphorus (RP), [7] consisting of earth-abundant and environmentally friendly non-metallic elements (C,N,S,P ,etc. ), have emerged as alternative photocatalysts.A mong them, RP (amorphous,f ibrous,a nd Hittorfsp hosphorus), with strong visible-light absorption and suitable band structures,has been developed as ap romising photocatalyst for water splitting.…”

Section: Introductionmentioning

confidence: 99%

A [001]‐Oriented Hittorf's Phosphorus Nanorods/Polymeric Carbon Nitride Heterostructure for Boosting Wide‐Spectrum‐Responsive Photocatalytic Hydrogen Evolution from Pure Water

Zhu

Yin

et al. 2019

Angewandte Chemie

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Red phosphorus is a promising photocatalyst with wide visible‐light absorption up to 700 nm, but the fast charge recombination limits its photocatalytic hydrogen evolution reaction (HER) activity. Now, [001]‐oriented Hittorf's phosphorus (HP) nanorods were successfully grown on polymeric carbon nitride (PCN) by a chemical vapor deposition strategy. Compared with the bare PCN and HP, the optimized PCN@HP hybrid exhibited a significantly enhanced photocatalytic activity, with HER rates reaching 33.2 and 17.5 μmol h−1 from pure water under simulated solar light and visible light irradiation, respectively. It was theoretically and experimentally indicated that the strong electronic coupling between PCN and [001]‐oriented HP nanorods gave rise to the enhanced visible light absorption and the greatly accelerated photoinduced electron–hole separation and transfer, which benefited the photocatalytic HER performance.

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“…In contrast to bulk BP, the VB level of BP‐BM has been positively shifted which avoids undesirable recombination of the photogenerated electron–hole pairs (Figure b). In addition to this, so far, many other chemically modified BPNSs based photocatalysts have been successfully employed for H 2 evolution reaction, revealing that BPNSs will be a good photocatalyst for energy production to solve the future energy crisis . Besides H 2 evolution reaction, Co 3 O 4 modified BPNSs have been used as an electrocatalyst for oxygen evolution reaction .…”

Section: Applications Of Functionalized Bpnssmentioning

confidence: 99%

Recent Advances in Chemical Functionalization of 2D Black Phosphorous Nanosheets

Thurakkal

Zhang

2019

Advanced Science

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BPNSs can be mechanically peeled off from bulk BP crystals using scotch-tape. [37] Although this method can produce high quality 2D BPNSs in a simple and cost-effective manner, the obtained BPNSs show inhomogeneous size, poor repeatability, and extremely low production yield. To obtain BPNSs in a high yield, several alternative methods were employed including metal assisted mechanical exfoliation [102] and exfoliation using polydimethylsiloxane (PDMS) stamp, [70] viscoelastic stamp using blue Nitto tape, [103] and poly(methyl methacrylate)/poly(vinyl alcohol) stack. [104] In another approach, Zhu and co-workers reported a large-scale preparation of relatively stable BPNSs through high energy solid-state mechanical ball milling of bulk BP in the presence of an additive LiOH. [105] The high-energy mechanical milling facilitates the generation of free radicals at the edges by breaking the PP bonds and thus leads to the formation of stable hydroxyl functionalized BPNSs. In addition, this method has been widely utilizing as an efficient method to synthesize functionalized BPNSs for various applications. [106,107] Adv. Sci. 2020, 7, 1902359 3.20-3.73 Å a 1L 2L 3L Bulk Armchair b

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A Low‐Cost Metal‐Free Photocatalyst Based on Black Phosphorus

Cited by 90 publications

References 53 publications

Magnetically Hollow Pt Nanocages with Ultrathin Walls as a Highly Integrated Nanoreactor for Catalytic Transfer Hydrogenation Reaction

Magnetically Hollow Pt Nanocages with Ultrathin Walls as a Highly Integrated Nanoreactor for Catalytic Transfer Hydrogenation Reaction

A [001]‐Oriented Hittorf's Phosphorus Nanorods/Polymeric Carbon Nitride Heterostructure for Boosting Wide‐Spectrum‐Responsive Photocatalytic Hydrogen Evolution from Pure Water

Recent Advances in Chemical Functionalization of 2D Black Phosphorous Nanosheets

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