Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

Phd by thesis

As a fascinating conjugated polymer, graphitic carbon nitride (g-C3N4) has become a new research hotspot and drawn broad interdisciplinary attention as a metal-free and visible-light-responsive photocatalyst in the arena of solar energy conversion and environmental remediation. This is due to its appealing electronic band structure, high physicochemical stability, and “earth-abundant” nature. This critical review summarizes a panorama of the latest progress related to the design and construction of pristine g-C3N4 and g-C3N4-based nanocomposites, including (1) nanoarchitecture design of bare g-C3N4, such as hard and soft templating approaches, supramolecular preorganization assembly, exfoliation, and template-free synthesis routes, (2) functionalization of g-C3N4 at an atomic level (elemental doping) and molecular level (copolymerization), and (3) modification of g-C3N4 with well-matched energy levels of another semiconductor or a metal as a cocatalyst to form heterojunction nanostructures. The constructi...

Graphitic Carbon Nitride (g-C3N4)-Based Photocatalysts for Artificial Photosynthesis and Environmental Remediation: Are We a Step Closer To Achieving Sustainability?

TiO 2 photocatalysis is widely used in a variety of applications and products in the environmental and energy fields, including self-cleaning surfaces, air and water purification systems, sterilization, hydrogen evolution, and photoelectrochemical conversion. The development of new materials, however, is strongly required to provide enhanced performances with respect to the photocatalytic properties and to find new uses for TiO 2 photocatalysis. In this review, recent developments in the area of TiO 2 photocatalysis research, in terms of new materials from a structural design perspective, have been summarized. The dimensionality associated with the structure of a TiO 2 material can affect its properties and functions, including its photocatalytic performance, and also more specifically its surface area, adsorption, reflectance, adhesion, and carrier transportation properties. We provide a brief introduction to the current situation in TiO 2 photocatalysis, and describe structurally controlled TiO 2 photocatalysts which can be classified into zero-, one-, two-, and three-dimensional structures. Furthermore, novel applications of TiO 2 surfaces for the fabrication of wettability patterns and for printing are discussed.

TiO2 photocatalysis: Design and applications

A review on g-C3N4-based photocatalysts

A surface science perspective on TiO2 photocatalysis

Liquid N2 quenching induced oxygen defects and surface distortion in TiO2 and the effect on the photocatalysis of methylene blue and acetone

The influence of O2 partial pressure on the structure and surface wettability of C-modified TiO2 films prepared by magnetron co-sputtering

We report a very convenient and cost-effective approach for the fabrication of a self-supported Co@CoTe2 electrode comprising CoTe2 nanoparticles used for water oxidation catalysis, which is achieved by one-step hydrothermal treatment of commercially available cobalt foam. The characteristics of the as-fabricated Co@CoTe2 electrode in terms of the crystal structure, surface morphology and chemical components were analyzed. Moreover, the electrochemical properties of the Co@CoTe2 electrocatalyst used for water electrolysis were comprehensively investigated. When used to catalyze the oxygen evolution reaction (OER) in 1.0 M KOH, Co@CoTe2 electrodes exhibit outstanding catalytic activity and long-term durability, thus outperforming many well-studied cobalt based dichalcogenides (including tellurides, selenides and sulfides) that have been recently reported in the literature. Particularly, Co@CoTe2 prepared at 240 °C (Co@CoTe2-240) requires a low overpotential of only 286 mV to attain an anodic current density of 10 mA cm−2 and shows fast kinetics for the OER with a small Tafel slope of 42 mV dec−1. Moreover, the overpotential needed to maintain 10 mA cm−2 is merely increased by 20 mV after continuous OER electrolysis for 16 hours, exhibiting excellent long-term stability. Given the commercial availability of porous Co foam, the convenient and scalable approach of hydrothermal synthesis and the outstanding catalytic performance, the self-supported Co@CoTe2 electrode reported here holds great promise as an important OER electrocatalyst in water splitting devices and metal–air batteries.

One-step fabrication of a self-supported Co@CoTe2 electrocatalyst for efficient and durable oxygen evolution reactions

Usually, VO2 films prepared by a magnetron sputtering method exhibit good durability and excellent solar modulation efficiency (ΔTsol). However, its undesirable low-temperature luminous transmittan...

Baoshun Liu

Papers

Liquid N2 quenching induced oxygen defects and surface distortion in TiO2 and the effect on the photocatalysis of methylene blue and acetone

The influence of O2 partial pressure on the structure and surface wettability of C-modified TiO2 films prepared by magnetron co-sputtering

One-step fabrication of a self-supported Co@CoTe2 electrocatalyst for efficient and durable oxygen evolution reactions

Facile Preparation of Zn2V2O7–VO2 Composite Films with Enhanced Thermochromic Properties for Smart Windows

Microstructural characterization and optical polarization of glass with needle-like micro–nano silver oriented arrangement