Polystyrene Bead-Assisted Self-Assembly of Microstructured Silica Hollow Spheres in Highly Alkaline Media

Polystyrene Bead-Assisted Self-Assembly of Microstructured Silica Hollow Spheres in Highly Alkaline Medi

2D/2D Interface Engineering Promotes Charge Separation of Mo₂C/g‑C₃N₄ Nanojunction Photocatalysts for Efficient Photocatalytic Hydrogen Evolution

The focus of designing and synthesizing composite catalysts with high photocatalytic efficiency is the regulation of nanostructures and optimization of heterojunctions. By increasing the contact area between the catalysts, additional reaction sites can be established and charge carriers can be transferred and reacted faster. Here, two-dimensional (2D) Mo2C is prepared via a novel approach by carbonizing precursors intercalated by low-boiling solvents, and a composite catalyst Mo2C/graphitic carbon nitride (g-C3N4) with 2D to 2D structure optimization was synthesized through the self-assembly of 2D Mo2C and 2D g-C3N4. The hydrogen production rate of the photocatalyst at the optimal ratio is 675.27 μmol g–1 h–1, which further exceeds 2D g-C3N4. It is 5.1 times that of the 7 wt % B/2D Mo2C/g-C3N4 photocatalyst and also 3.5 times that of 0.5 wt % Pt/g-C3N4. The enhanced photocatalytic activity is attributed to the fact that Mo2C as a cocatalyst can rapidly transfer the photogenerated electrons of g-C3N4 to the surface of Mo2C, and the 2D to 2D structure can provide abundant reaction sites for photogenerated electrons to prevent their recombination with holes. This study provides new ideas and techniques for the development of 2D platinum-like cocatalysts and the optimization of nanojunctions

“Twin Copper Source” Growth of Metal−Organic Framework Membrane: Cu₃(BTC)₂ with High Permeability and Selectivity for Recycling H₂

“Twin Copper Source” Growth of Metal−Organic Framework Membrane: Cu3(BTC)2 with High Permeability and Selectivity for Recycling H2</sub

Ammonia Borane Confined by a Metal−Organic Framework for Chemical Hydrogen Storage: Enhancing Kinetics and Eliminating Ammonia

Ammonia Borane Confined by a Metal−Organic Framework for Chemical Hydrogen Storage: Enhancing Kinetics and Eliminating Ammoni

Polymer−Mesoporous Silica Materials Templated with an Oppositely Charged Surfactant/Polymer System for Drug Delivery

In this paper, polymer−mesoporous silica nanoparticles have been synthesized by a dual-template technology. Cationic polymer quaternized poly[bis(2-chloroethyl)ether-alt-1,3-bis[3-(dimethylamino)propyl]urea] (PEPU) and anionic surfactant sodium dodecyl sulfate (SDS) were used to form a homogeneous comicelle system to induce mesoporous silica spherical nanoparticles with diameters of 50−180 nm. The formation mechanism was studied by transmission electron microscopy (TEM), which suggested that PEPU played a cotemplate role in the synthesis process, and no mesoporous structure was generated without it. After removing the anionic surfactant, SDS, by an ion-exchange method, the cationic polymer−mesoporous silica nanoparticles were obtained. Using the materials as the host and ibuprofen (IBU)/captopril (CapH2) as the model drugs, the system revealed well-sustained release profiles

Three-Dimensional Open-Framework Nickel Aluminophosphate [NiAlP₂O₈][C₂N₂H₉]: Assembly of One-Dimensional AlP₂O₈^3- Chains through [NiO₅N] Octahedra

Three-Dimensional Open-Framework Nickel Aluminophosphate [NiAlP2O8][C2N2H9]:  Assembly of One-Dimensional AlP2O83- Chains through [NiO5N] Octahedr

Amine-Templated Assembly of Metal–Organic Frameworks with Attractive Topologies

Seven new metal–organic frameworks (MOFs) have been synthesized using different organic amines as templates: [Cd(HBTC)2]·2(HDETA)·4(H2O) (1) (BTC = 1,3,5-benzenetricarboxylate and DETA = diethylenetriamine), [Cd2(BTC)2(H2O)2]·2(HCHA)·2(EtOH)·2(H2O) (CHA = cyclohexylamine) (2), [Cd5(BTC)4Cl4]·4(HTEA)·2(H3O) (TEA = triethylamine) (3), [Cd3(BTC)3(H2O)]·(HTEA)·2(H3O) (4), [Zn(BTC)(H2O)]·(HTPA)·(H2O) (TPA = tri-n-propylamine) (5), [Cd(BTC)]·(HTPA)·(H2O) (6), and [Cd2(BTC)(HBTC)]·(HTBA)·(H2O) (TBA = tri-n-butylamine) (7). Topologically, the polymer 1 exhibits a two-dimensional (2D) Cd-HBTC network with (44) topology, which is a sql structure; the polymer 2 possesses a three-dimensional (3D) porous Cd-BTC framework with (4·62)2(42·610·83) topology, which is a contorted rutile structure; polymer 3 exhibits a 3D open Cd-BTC architecture with (62·82·102)2(62·84)(63)4 topology; polymer 4 is a 3D porous Cd-BTC network with new (4·62)2(42·64·86·103)(6·82)2(62·84)(62·84)2(62·8)2 topology; similar to 1, polymer 5 is a 2D Zn-BTC framework with (4·82) topology; interestingly, polymer 6 possesses a 3D porous Cd-BTC architecture with the same topology as 2; polymer 7 shows a 3D open Cd-BTC framework with (63)(65·10) topology. In addition to the structures of polymers 1–7, their thermal stabilities, ion exchange properties, and nonbonding interaction energies, including H-bonding and van der Waals, have also been studied. Remarkably, those organic amine cations reside in the interlayer or channel space, playing important roles such as templating, space-filling, and charge-balancing agents. These studies would facilitate the exploration of novel MOFs with charming molecular topologies and multifunctional properties

Amine-Templated Assembly of Metal–Organic Frameworks with Attractive Topologies

Seven new metal–organic frameworks (MOFs) have been synthesized using different organic amines as templates: [Cd(HBTC)2]·2(HDETA)·4(H2O) (1) (BTC = 1,3,5-benzenetricarboxylate and DETA = diethylenetriamine), [Cd2(BTC)2(H2O)2]·2(HCHA)·2(EtOH)·2(H2O) (CHA = cyclohexylamine) (2), [Cd5(BTC)4Cl4]·4(HTEA)·2(H3O) (TEA = triethylamine) (3), [Cd3(BTC)3(H2O)]·(HTEA)·2(H3O) (4), [Zn(BTC)(H2O)]·(HTPA)·(H2O) (TPA = tri-n-propylamine) (5), [Cd(BTC)]·(HTPA)·(H2O) (6), and [Cd2(BTC)(HBTC)]·(HTBA)·(H2O) (TBA = tri-n-butylamine) (7). Topologically, the polymer 1 exhibits a two-dimensional (2D) Cd-HBTC network with (44) topology, which is a sql structure; the polymer 2 possesses a three-dimensional (3D) porous Cd-BTC framework with (4·62)2(42·610·83) topology, which is a contorted rutile structure; polymer 3 exhibits a 3D open Cd-BTC architecture with (62·82·102)2(62·84)(63)4 topology; polymer 4 is a 3D porous Cd-BTC network with new (4·62)2(42·64·86·103)(6·82)2(62·84)(62·84)2(62·8)2 topology; similar to 1, polymer 5 is a 2D Zn-BTC framework with (4·82) topology; interestingly, polymer 6 possesses a 3D porous Cd-BTC architecture with the same topology as 2; polymer 7 shows a 3D open Cd-BTC framework with (63)(65·10) topology. In addition to the structures of polymers 1–7, their thermal stabilities, ion exchange properties, and nonbonding interaction energies, including H-bonding and van der Waals, have also been studied. Remarkably, those organic amine cations reside in the interlayer or channel space, playing important roles such as templating, space-filling, and charge-balancing agents. These studies would facilitate the exploration of novel MOFs with charming molecular topologies and multifunctional properties

Amine-Templated Assembly of Metal–Organic Frameworks with Attractive Topologies

Seven new metal–organic frameworks (MOFs) have been synthesized using different organic amines as templates: [Cd(HBTC)2]·2(HDETA)·4(H2O) (1) (BTC = 1,3,5-benzenetricarboxylate and DETA = diethylenetriamine), [Cd2(BTC)2(H2O)2]·2(HCHA)·2(EtOH)·2(H2O) (CHA = cyclohexylamine) (2), [Cd5(BTC)4Cl4]·4(HTEA)·2(H3O) (TEA = triethylamine) (3), [Cd3(BTC)3(H2O)]·(HTEA)·2(H3O) (4), [Zn(BTC)(H2O)]·(HTPA)·(H2O) (TPA = tri-n-propylamine) (5), [Cd(BTC)]·(HTPA)·(H2O) (6), and [Cd2(BTC)(HBTC)]·(HTBA)·(H2O) (TBA = tri-n-butylamine) (7). Topologically, the polymer 1 exhibits a two-dimensional (2D) Cd-HBTC network with (44) topology, which is a sql structure; the polymer 2 possesses a three-dimensional (3D) porous Cd-BTC framework with (4·62)2(42·610·83) topology, which is a contorted rutile structure; polymer 3 exhibits a 3D open Cd-BTC architecture with (62·82·102)2(62·84)(63)4 topology; polymer 4 is a 3D porous Cd-BTC network with new (4·62)2(42·64·86·103)(6·82)2(62·84)(62·84)2(62·8)2 topology; similar to 1, polymer 5 is a 2D Zn-BTC framework with (4·82) topology; interestingly, polymer 6 possesses a 3D porous Cd-BTC architecture with the same topology as 2; polymer 7 shows a 3D open Cd-BTC framework with (63)(65·10) topology. In addition to the structures of polymers 1–7, their thermal stabilities, ion exchange properties, and nonbonding interaction energies, including H-bonding and van der Waals, have also been studied. Remarkably, those organic amine cations reside in the interlayer or channel space, playing important roles such as templating, space-filling, and charge-balancing agents. These studies would facilitate the exploration of novel MOFs with charming molecular topologies and multifunctional properties