Influenced by Alberto Giacometti and Henry Moore, his works manifest expressionism, minimalism, and a constant exploration of purity of material.

Zainul Abedin, the founding father of Bangladeshi modern art, acclaimed and encouraged Khan for his watercolors.

[2] In a career spanning over five decades, his works have been exhibited and installed in Bangladesh, South Korea, India, and the United States.

At the College of Arts and Crafts, he studied under the guidance of artists Zainul Abedin, Safiuddin Ahmed, Aminul Islam, Mustafa Manwar.

While he was a third-year student, Abedin presented one of Khan's paintings to the President of Burma, Ne Win, during his visit to the art college.

When Khan was a student in the final year class, he experienced a road accident that fractured his skull, causing him to have a reconstructive surgery in the head.

On the way, Khan was impressed by seeing traditional African carvings and masks in Dakar, and rocky shores in Cape Town at stopovers.

During this stay in Edinburgh, he visited the National Museum of Scotland and was impressed by Henry Moore's sculptures in public places.

Sculptures installed in public spaces in Montmartre, Montparnasse and a solo exhibition of Alberto Giacometti have had a lasting impact in his mind.

He then went on to study at the Faculty of Fine Arts, Maharaja Sayajirao University of Baroda, earning his master's degree in bronze casting in 1976.

[1] At Baroda, he studied in the tutelage of notable contemporary Indian artists Raghav Kaneria,[9] Mahendra Pandia, Sankho Chaudhuri, K. G.

[10] In 1983, the Embassy of Bangladesh in Washington D.C. organized a solo exhibition of Khan with the sculptures he made during his stay in New York City.

The ghastly scenes and atrocities of the war made permanent impressions in his mind, resulting in his series of works on the theme titled Remembrance '71.

The piece, titled Jagroto Chowrongi (The Vigilant Crossroads) is the figure of a lone freedom fighter, has become a symbol of the heroic War of Liberation in the country.

Khan's major recognition as a sculptor came in 1980 when he was commissioned by the Government of Bangladesh to make a sculpture to be installed at the entrance of the Bangabhaban (President's House).

Later, the French ambassador to Bangladesh, while visiting Bangabhaban, notified the then-president Ziaur Rahman that it was contemporary with the sculptures of France.

Khan organized his first solo sculpture exhibition at the gallery of Faculty of Fine Arts in 1982, with works primarily based on the liberation war theme.

[11] He participated in 6th Triennial Art Exhibition in New Delhi, organized by Lalit Kala Akademi in 1986, as an official entrant from Bangladesh.

[12] In 1988, his sculpture on the liberation war theme titled Jagrotobangla (The Vigilant Bangla) was installed at the Zia Fertilizer Factory in Ashuganj, Brahmanbaria.

The most prominent one of these is the sculpture titled Freedom Fighter, made with stainless steel pipe which was installed in 2003 at the entrance of UTC Building located in Panthapath, Dhaka.

In 2001, he created a sculpture, composed of a group of freedom fighters, titled Bijoy Keton which was installed in the Dhaka Cantonment.

In addition to that, the World Bank office installed his relief work at the entrance, decorated the interior with 18 of his oil-paintings, terracotta, a metal-sculpture highlighting fish and a mural.

His sculpture, titled Shikha, a geometric abstract in painted sheet metal was placed at the entrance of the National University, Bangladesh.

Though majority of his early sculptures were built in the expressionist style, his works after 2000 reflect minimalism with constant exploration for purity of forms and material.

[11] His watercolor and acrylic paintings predominantly delineate landscape and natural elements, in particular, wetlands, birds, rural panorama, greenery, cloudy sky, deep forest and hills.